Fix CVE-2025-47913: upgrade golang.org/x/crypto to v0.48.0

Upgrade golang.org/x/crypto from v0.38.0 to v0.48.0 to resolve
CVE-2025-47913 (GO-2025-4116), a denial-of-service vulnerability in
golang.org/x/crypto/ssh/agent where SSH clients receiving
SSH_AGENT_SUCCESS when expecting a typed response will panic and cause
early termination of the client process. The fix was introduced in
v0.43.0.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

go.mod

@@ -1,6 +1,6 @@
 module github.com/cloudflare/cloudflared
 
-go 1.24
+go 1.24.0
 
 require (
 	github.com/coreos/go-oidc/v3 v3.10.0
@@ -34,11 +34,11 @@ require (
 	go.opentelemetry.io/proto/otlp v1.2.0
 	go.uber.org/automaxprocs v1.6.0
 	go.uber.org/mock v0.5.1
-	golang.org/x/crypto v0.38.0
+	golang.org/x/crypto v0.48.0
-	golang.org/x/net v0.40.0
+	golang.org/x/net v0.49.0
-	golang.org/x/sync v0.14.0
+	golang.org/x/sync v0.19.0
-	golang.org/x/sys v0.33.0
+	golang.org/x/sys v0.41.0
-	golang.org/x/term v0.32.0
+	golang.org/x/term v0.40.0
 	google.golang.org/protobuf v1.36.6
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 	gopkg.in/yaml.v3 v3.0.1
@@ -83,10 +83,10 @@ require (
 	go.opentelemetry.io/otel/metric v1.35.0 // indirect
 	go.opentelemetry.io/otel/sdk/metric v1.35.0 // indirect
 	golang.org/x/arch v0.4.0 // indirect
-	golang.org/x/mod v0.24.0 // indirect
+	golang.org/x/mod v0.32.0 // indirect
 	golang.org/x/oauth2 v0.30.0 // indirect
-	golang.org/x/text v0.25.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
-	golang.org/x/tools v0.32.0 // indirect
+	golang.org/x/tools v0.41.0 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20250505200425-f936aa4a68b2 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250512202823-5a2f75b736a9 // indirect
 	google.golang.org/grpc v1.72.2 // indirect

go.sum

@@ -227,21 +227,21 @@ golang.org/x/arch v0.4.0 h1:A8WCeEWhLwPBKNbFi5Wv5UTCBx5zzubnXDlMOFAzFMc=
 golang.org/x/arch v0.4.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.38.0 h1:jt+WWG8IZlBnVbomuhg2Mdq0+BBQaHbtqHEFEigjUV8=
+golang.org/x/crypto v0.48.0 h1:/VRzVqiRSggnhY7gNRxPauEQ5Drw9haKdM0jqfcCFts=
-golang.org/x/crypto v0.38.0/go.mod h1:MvrbAqul58NNYPKnOra203SB9vpuZW0e+RRZV+Ggqjw=
+golang.org/x/crypto v0.48.0/go.mod h1:r0kV5h3qnFPlQnBSrULhlsRfryS2pmewsg+XfMgkVos=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
-golang.org/x/mod v0.24.0 h1:ZfthKaKaT4NrhGVZHO1/WDTwGES4De8KtWO0SIbNJMU=
+golang.org/x/mod v0.32.0 h1:9F4d3PHLljb6x//jOyokMv3eX+YDeepZSEo3mFJy93c=
-golang.org/x/mod v0.24.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
+golang.org/x/mod v0.32.0/go.mod h1:SgipZ/3h2Ci89DlEtEXWUk/HteuRin+HHhN+WbNhguU=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.40.0 h1:79Xs7wF06Gbdcg4kdCCIQArK11Z1hr5POQ6+fIYHNuY=
+golang.org/x/net v0.49.0 h1:eeHFmOGUTtaaPSGNmjBKpbng9MulQsJURQUAfUwY++o=
-golang.org/x/net v0.40.0/go.mod h1:y0hY0exeL2Pku80/zKK7tpntoX23cqL3Oa6njdgRtds=
+golang.org/x/net v0.49.0/go.mod h1:/ysNB2EvaqvesRkuLAyjI1ycPZlQHM3q01F02UY/MV8=
 golang.org/x/oauth2 v0.30.0 h1:dnDm7JmhM45NNpd8FDDeLhK6FwqbOf4MLCM9zb1BOHI=
 golang.org/x/oauth2 v0.30.0/go.mod h1:B++QgG3ZKulg6sRPGD/mqlHQs5rB3Ml9erfeDY7xKlU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.14.0 h1:woo0S4Yywslg6hp4eUFjTVOyKt0RookbpAHG4c1HmhQ=
+golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
-golang.org/x/sync v0.14.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
+golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -249,20 +249,20 @@ golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
+golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
-golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
-golang.org/x/term v0.32.0 h1:DR4lr0TjUs3epypdhTOkMmuF5CDFJ/8pOnbzMZPQ7bg=
+golang.org/x/term v0.40.0 h1:36e4zGLqU4yhjlmxEaagx2KuYbJq3EwY8K943ZsHcvg=
-golang.org/x/term v0.32.0/go.mod h1:uZG1FhGx848Sqfsq4/DlJr3xGGsYMu/L5GW4abiaEPQ=
+golang.org/x/term v0.40.0/go.mod h1:w2P8uVp06p2iyKKuvXIm7N/y0UCRt3UfJTfZ7oOpglM=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
-golang.org/x/text v0.25.0 h1:qVyWApTSYLk/drJRO5mDlNYskwQznZmkpV2c8q9zls4=
+golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
-golang.org/x/text v0.25.0/go.mod h1:WEdwpYrmk1qmdHvhkSTNPm3app7v4rsT8F2UD6+VHIA=
+golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190828213141-aed303cbaa74/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.32.0 h1:Q7N1vhpkQv7ybVzLFtTjvQya2ewbwNDZzUgfXGqtMWU=
+golang.org/x/tools v0.41.0 h1:a9b8iMweWG+S0OBnlU36rzLp20z1Rp10w+IY2czHTQc=
-golang.org/x/tools v0.32.0/go.mod h1:ZxrU41P/wAbZD8EDa6dDCa6XfpkhJ7HFMjHJXfBDu8s=
+golang.org/x/tools v0.41.0/go.mod h1:XSY6eDqxVNiYgezAVqqCeihT4j1U2CCsqvH3WhQpnlg=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

vendor/golang.org/x/crypto/blake2b/blake2x.go

@@ -12,6 +12,8 @@ import (
 
 // XOF defines the interface to hash functions that
 // support arbitrary-length output.
+//
+// New callers should prefer the standard library [hash.XOF].
 type XOF interface {
 	// Write absorbs more data into the hash's state. It panics if called
 	// after Read.
@@ -47,6 +49,8 @@ const maxOutputLength = (1 << 32) * 64
 //
 // A non-nil key turns the hash into a MAC. The key must between
 // zero and 32 bytes long.
+//
+// The result can be safely interface-upgraded to [hash.XOF].
 func NewXOF(size uint32, key []byte) (XOF, error) {
 	if len(key) > Size {
 		return nil, errKeySize
@@ -93,6 +97,10 @@ func (x *xof) Clone() XOF {
 	return &clone
 }
 
+func (x *xof) BlockSize() int {
+	return x.d.BlockSize()
+}
+
 func (x *xof) Reset() {
 	x.cfg[0] = byte(Size)
 	binary.LittleEndian.PutUint32(x.cfg[4:], uint32(Size)) // leaf length

vendor/golang.org/x/crypto/blake2b/go125.go

@@ -0,0 +1,11 @@
+// Copyright 2025 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.25
+
+package blake2b
+
+import "hash"
+
+var _ hash.XOF = (*xof)(nil)

vendor/golang.org/x/crypto/chacha20/chacha_arm64.s

@@ -29,7 +29,7 @@ loop:
 	MOVD	$NUM_ROUNDS, R21
 	VLD1	(R11), [V30.S4, V31.S4]
 
-	// load contants
+	// load constants
 	// VLD4R (R10), [V0.S4, V1.S4, V2.S4, V3.S4]
 	WORD	$0x4D60E940
 

vendor/golang.org/x/crypto/chacha20poly1305/chacha20poly1305.go

@@ -38,6 +38,9 @@ type chacha20poly1305 struct {
 
 // New returns a ChaCha20-Poly1305 AEAD that uses the given 256-bit key.
 func New(key []byte) (cipher.AEAD, error) {
+	if fips140Enforced() {
+		return nil, errors.New("chacha20poly1305: use of ChaCha20Poly1305 is not allowed in FIPS 140-only mode")
+	}
 	if len(key) != KeySize {
 		return nil, errors.New("chacha20poly1305: bad key length")
 	}

vendor/golang.org/x/crypto/chacha20poly1305/chacha20poly1305_amd64.go

@@ -56,7 +56,10 @@ func (c *chacha20poly1305) seal(dst, nonce, plaintext, additionalData []byte) []
 
 	ret, out := sliceForAppend(dst, len(plaintext)+16)
 	if alias.InexactOverlap(out, plaintext) {
-		panic("chacha20poly1305: invalid buffer overlap")
+		panic("chacha20poly1305: invalid buffer overlap of output and input")
+	}
+	if alias.AnyOverlap(out, additionalData) {
+		panic("chacha20poly1305: invalid buffer overlap of output and additional data")
 	}
 	chacha20Poly1305Seal(out[:], state[:], plaintext, additionalData)
 	return ret
@@ -73,7 +76,10 @@ func (c *chacha20poly1305) open(dst, nonce, ciphertext, additionalData []byte) (
 	ciphertext = ciphertext[:len(ciphertext)-16]
 	ret, out := sliceForAppend(dst, len(ciphertext))
 	if alias.InexactOverlap(out, ciphertext) {
-		panic("chacha20poly1305: invalid buffer overlap")
+		panic("chacha20poly1305: invalid buffer overlap of output and input")
+	}
+	if alias.AnyOverlap(out, additionalData) {
+		panic("chacha20poly1305: invalid buffer overlap of output and additional data")
 	}
 	if !chacha20Poly1305Open(out, state[:], ciphertext, additionalData) {
 		for i := range out {

vendor/golang.org/x/crypto/chacha20poly1305/chacha20poly1305_generic.go

@@ -31,7 +31,10 @@ func (c *chacha20poly1305) sealGeneric(dst, nonce, plaintext, additionalData []b
 	ret, out := sliceForAppend(dst, len(plaintext)+poly1305.TagSize)
 	ciphertext, tag := out[:len(plaintext)], out[len(plaintext):]
 	if alias.InexactOverlap(out, plaintext) {
-		panic("chacha20poly1305: invalid buffer overlap")
+		panic("chacha20poly1305: invalid buffer overlap of output and input")
+	}
+	if alias.AnyOverlap(out, additionalData) {
+		panic("chacha20poly1305: invalid buffer overlap of output and additional data")
 	}
 
 	var polyKey [32]byte
@@ -67,7 +70,10 @@ func (c *chacha20poly1305) openGeneric(dst, nonce, ciphertext, additionalData []
 
 	ret, out := sliceForAppend(dst, len(ciphertext))
 	if alias.InexactOverlap(out, ciphertext) {
-		panic("chacha20poly1305: invalid buffer overlap")
+		panic("chacha20poly1305: invalid buffer overlap of output and input")
+	}
+	if alias.AnyOverlap(out, additionalData) {
+		panic("chacha20poly1305: invalid buffer overlap of output and additional data")
 	}
 	if !p.Verify(tag) {
 		for i := range out {

vendor/golang.org/x/crypto/chacha20poly1305/fips140only_compat.go

@@ -0,0 +1,9 @@
+// Copyright 2025 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !go1.26
+
+package chacha20poly1305
+
+func fips140Enforced() bool { return false }

vendor/golang.org/x/crypto/chacha20poly1305/fips140only_go1.26.go

@@ -0,0 +1,11 @@
+// Copyright 2025 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.26
+
+package chacha20poly1305
+
+import "crypto/fips140"
+
+func fips140Enforced() bool { return fips140.Enforced() }

vendor/golang.org/x/crypto/chacha20poly1305/xchacha20poly1305.go

@@ -22,6 +22,9 @@ type xchacha20poly1305 struct {
 // preferred when nonce uniqueness cannot be trivially ensured, or whenever
 // nonces are randomly generated.
 func NewX(key []byte) (cipher.AEAD, error) {
+	if fips140Enforced() {
+		return nil, errors.New("chacha20poly1305: use of ChaCha20Poly1305 is not allowed in FIPS 140-only mode")
+	}
 	if len(key) != KeySize {
 		return nil, errors.New("chacha20poly1305: bad key length")
 	}

vendor/golang.org/x/crypto/curve25519/curve25519.go

@@ -3,11 +3,14 @@
 // license that can be found in the LICENSE file.
 
 // Package curve25519 provides an implementation of the X25519 function, which
-// performs scalar multiplication on the elliptic curve known as Curve25519.
+// performs scalar multiplication on the elliptic curve known as Curve25519
-// See RFC 7748.
+// according to [RFC 7748].
 //
-// This package is a wrapper for the X25519 implementation
+// The curve25519 package is a wrapper for the X25519 implementation in the
-// in the crypto/ecdh package.
+// crypto/ecdh package. It is [frozen] and is not accepting new features.
+//
+// [RFC 7748]: https://datatracker.ietf.org/doc/html/rfc7748
+// [frozen]: https://go.dev/wiki/Frozen
 package curve25519
 
 import "crypto/ecdh"
@@ -36,7 +39,7 @@ func ScalarBaseMult(dst, scalar *[32]byte) {
 	curve := ecdh.X25519()
 	priv, err := curve.NewPrivateKey(scalar[:])
 	if err != nil {
-		panic("curve25519: internal error: scalarBaseMult was not 32 bytes")
+		panic("curve25519: " + err.Error())
 	}
 	copy(dst[:], priv.PublicKey().Bytes())
 }

vendor/golang.org/x/crypto/salsa20/salsa/hsalsa20.go

@@ -3,6 +3,10 @@
 // license that can be found in the LICENSE file.
 
 // Package salsa provides low-level access to functions in the Salsa family.
+//
+// Deprecated: this package exposes unsafe low-level operations. New applications
+// should consider using the AEAD construction in golang.org/x/crypto/chacha20poly1305
+// instead. Existing users should migrate to golang.org/x/crypto/salsa20.
 package salsa
 
 import "math/bits"

vendor/golang.org/x/crypto/ssh/certs.go

@@ -21,7 +21,12 @@ import (
 // field.
 const (
 	CertAlgoRSAv01 = "ssh-rsa-cert-v01@openssh.com"
-	CertAlgoDSAv01        = "ssh-dss-cert-v01@openssh.com"
+	// Deprecated: DSA is only supported at insecure key sizes, and was removed
+	// from major implementations.
+	CertAlgoDSAv01 = InsecureCertAlgoDSAv01
+	// Deprecated: DSA is only supported at insecure key sizes, and was removed
+	// from major implementations.
+	InsecureCertAlgoDSAv01 = "ssh-dss-cert-v01@openssh.com"
 	CertAlgoECDSA256v01    = "ecdsa-sha2-nistp256-cert-v01@openssh.com"
 	CertAlgoECDSA384v01    = "ecdsa-sha2-nistp384-cert-v01@openssh.com"
 	CertAlgoECDSA521v01    = "ecdsa-sha2-nistp521-cert-v01@openssh.com"
@@ -228,7 +233,11 @@ func parseCert(in []byte, privAlgo string) (*Certificate, error) {
 	if err != nil {
 		return nil, err
 	}
-
+	// The Type() function is intended to return only certificate key types, but
+	// we use certKeyAlgoNames anyway for safety, to match [Certificate.Type].
+	if _, ok := certKeyAlgoNames[k.Type()]; ok {
+		return nil, fmt.Errorf("ssh: the signature key type %q is invalid for certificates", k.Type())
+	}
 	c.SignatureKey = k
 	c.Signature, rest, ok = parseSignatureBody(g.Signature)
 	if !ok || len(rest) > 0 {
@@ -296,16 +305,13 @@ type CertChecker struct {
 	SupportedCriticalOptions []string
 
 	// IsUserAuthority should return true if the key is recognized as an
-	// authority for the given user certificate. This allows for
+	// authority for user certificate. This must be set if this CertChecker
-	// certificates to be signed by other certificates. This must be set
+	// will be checking user certificates.
-	// if this CertChecker will be checking user certificates.
 	IsUserAuthority func(auth PublicKey) bool
 
 	// IsHostAuthority should report whether the key is recognized as
-	// an authority for this host. This allows for certificates to be
+	// an authority for this host. This must be set if this CertChecker
-	// signed by other keys, and for those other keys to only be valid
+	// will be checking host certificates.
-	// signers for particular hostnames. This must be set if this
-	// CertChecker will be checking host certificates.
 	IsHostAuthority func(auth PublicKey, address string) bool
 
 	// Clock is used for verifying time stamps. If nil, time.Now
@@ -442,12 +448,19 @@ func (c *CertChecker) CheckCert(principal string, cert *Certificate) error {
 // SignCert signs the certificate with an authority, setting the Nonce,
 // SignatureKey, and Signature fields. If the authority implements the
 // MultiAlgorithmSigner interface the first algorithm in the list is used. This
-// is useful if you want to sign with a specific algorithm.
+// is useful if you want to sign with a specific algorithm. As specified in
+// [SSH-CERTS], Section 2.1.1, authority can't be a [Certificate].
 func (c *Certificate) SignCert(rand io.Reader, authority Signer) error {
 	c.Nonce = make([]byte, 32)
 	if _, err := io.ReadFull(rand, c.Nonce); err != nil {
 		return err
 	}
+	// The Type() function is intended to return only certificate key types, but
+	// we use certKeyAlgoNames anyway for safety, to match [Certificate.Type].
+	if _, ok := certKeyAlgoNames[authority.PublicKey().Type()]; ok {
+		return fmt.Errorf("ssh: certificates cannot be used as authority (public key type %q)",
+			authority.PublicKey().Type())
+	}
 	c.SignatureKey = authority.PublicKey()
 
 	if v, ok := authority.(MultiAlgorithmSigner); ok {
@@ -488,7 +501,7 @@ var certKeyAlgoNames = map[string]string{
 	CertAlgoRSAv01:         KeyAlgoRSA,
 	CertAlgoRSASHA256v01:   KeyAlgoRSASHA256,
 	CertAlgoRSASHA512v01:   KeyAlgoRSASHA512,
-	CertAlgoDSAv01:        KeyAlgoDSA,
+	InsecureCertAlgoDSAv01: InsecureKeyAlgoDSA,
 	CertAlgoECDSA256v01:    KeyAlgoECDSA256,
 	CertAlgoECDSA384v01:    KeyAlgoECDSA384,
 	CertAlgoECDSA521v01:    KeyAlgoECDSA521,

vendor/golang.org/x/crypto/ssh/cipher.go

@@ -8,6 +8,7 @@ import (
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/des"
+	"crypto/fips140"
 	"crypto/rc4"
 	"crypto/subtle"
 	"encoding/binary"
@@ -15,6 +16,7 @@ import (
 	"fmt"
 	"hash"
 	"io"
+	"slices"
 
 	"golang.org/x/crypto/chacha20"
 	"golang.org/x/crypto/internal/poly1305"
@@ -58,11 +60,11 @@ func newRC4(key, iv []byte) (cipher.Stream, error) {
 type cipherMode struct {
 	keySize int
 	ivSize  int
-	create  func(key, iv []byte, macKey []byte, algs directionAlgorithms) (packetCipher, error)
+	create  func(key, iv []byte, macKey []byte, algs DirectionAlgorithms) (packetCipher, error)
 }
 
-func streamCipherMode(skip int, createFunc func(key, iv []byte) (cipher.Stream, error)) func(key, iv []byte, macKey []byte, algs directionAlgorithms) (packetCipher, error) {
+func streamCipherMode(skip int, createFunc func(key, iv []byte) (cipher.Stream, error)) func(key, iv []byte, macKey []byte, algs DirectionAlgorithms) (packetCipher, error) {
-	return func(key, iv, macKey []byte, algs directionAlgorithms) (packetCipher, error) {
+	return func(key, iv, macKey []byte, algs DirectionAlgorithms) (packetCipher, error) {
 		stream, err := createFunc(key, iv)
 		if err != nil {
 			return nil, err
@@ -93,41 +95,41 @@ func streamCipherMode(skip int, createFunc func(key, iv []byte) (cipher.Stream,
 }
 
 // cipherModes documents properties of supported ciphers. Ciphers not included
-// are not supported and will not be negotiated, even if explicitly requested in
+// are not supported and will not be negotiated, even if explicitly configured.
-// ClientConfig.Crypto.Ciphers.
+// When FIPS mode is enabled, only FIPS-approved algorithms are included.
-var cipherModes = map[string]*cipherMode{
+var cipherModes = map[string]*cipherMode{}
-	// Ciphers from RFC 4344, which introduced many CTR-based ciphers. Algorithms
-	// are defined in the order specified in the RFC.
-	"aes128-ctr": {16, aes.BlockSize, streamCipherMode(0, newAESCTR)},
-	"aes192-ctr": {24, aes.BlockSize, streamCipherMode(0, newAESCTR)},
-	"aes256-ctr": {32, aes.BlockSize, streamCipherMode(0, newAESCTR)},
 
-	// Ciphers from RFC 4345, which introduces security-improved arcfour ciphers.
+func init() {
-	// They are defined in the order specified in the RFC.
+	cipherModes[CipherAES128CTR] = &cipherMode{16, aes.BlockSize, streamCipherMode(0, newAESCTR)}
-	"arcfour128": {16, 0, streamCipherMode(1536, newRC4)},
+	cipherModes[CipherAES192CTR] = &cipherMode{24, aes.BlockSize, streamCipherMode(0, newAESCTR)}
-	"arcfour256": {32, 0, streamCipherMode(1536, newRC4)},
+	cipherModes[CipherAES256CTR] = &cipherMode{32, aes.BlockSize, streamCipherMode(0, newAESCTR)}
+	//  Use of GCM with arbitrary IVs is not allowed in FIPS 140-only mode,
+	// we'll wire it up to NewGCMForSSH in Go 1.26.
+	//
+	// For now it means we'll work with fips140=on but not fips140=only.
+	cipherModes[CipherAES128GCM] = &cipherMode{16, 12, newGCMCipher}
+	cipherModes[CipherAES256GCM] = &cipherMode{32, 12, newGCMCipher}
 
-	// Cipher defined in RFC 4253, which describes SSH Transport Layer Protocol.
+	if fips140.Enabled() {
-	// Note that this cipher is not safe, as stated in RFC 4253: "Arcfour (and
+		defaultCiphers = slices.DeleteFunc(defaultCiphers, func(algo string) bool {
-	// RC4) has problems with weak keys, and should be used with caution."
+			_, ok := cipherModes[algo]
-	// RFC 4345 introduces improved versions of Arcfour.
+			return !ok
-	"arcfour": {16, 0, streamCipherMode(0, newRC4)},
+		})
-
+		return
-	// AEAD ciphers
+	}
-	gcm128CipherID:     {16, 12, newGCMCipher},
-	gcm256CipherID:     {32, 12, newGCMCipher},
-	chacha20Poly1305ID: {64, 0, newChaCha20Cipher},
 
+	cipherModes[CipherChaCha20Poly1305] = &cipherMode{64, 0, newChaCha20Cipher}
+	// Insecure ciphers not included in the default configuration.
+	cipherModes[InsecureCipherRC4128] = &cipherMode{16, 0, streamCipherMode(1536, newRC4)}
+	cipherModes[InsecureCipherRC4256] = &cipherMode{32, 0, streamCipherMode(1536, newRC4)}
+	cipherModes[InsecureCipherRC4] = &cipherMode{16, 0, streamCipherMode(0, newRC4)}
 	// CBC mode is insecure and so is not included in the default config.
 	// (See https://www.ieee-security.org/TC/SP2013/papers/4977a526.pdf). If absolutely
 	// needed, it's possible to specify a custom Config to enable it.
 	// You should expect that an active attacker can recover plaintext if
 	// you do.
-	aes128cbcID: {16, aes.BlockSize, newAESCBCCipher},
+	cipherModes[InsecureCipherAES128CBC] = &cipherMode{16, aes.BlockSize, newAESCBCCipher}
-
+	cipherModes[InsecureCipherTripleDESCBC] = &cipherMode{24, des.BlockSize, newTripleDESCBCCipher}
-	// 3des-cbc is insecure and is not included in the default
-	// config.
-	tripledescbcID: {24, des.BlockSize, newTripleDESCBCCipher},
 }
 
 // prefixLen is the length of the packet prefix that contains the packet length
@@ -307,7 +309,7 @@ type gcmCipher struct {
 	buf    []byte
 }
 
-func newGCMCipher(key, iv, unusedMacKey []byte, unusedAlgs directionAlgorithms) (packetCipher, error) {
+func newGCMCipher(key, iv, unusedMacKey []byte, unusedAlgs DirectionAlgorithms) (packetCipher, error) {
 	c, err := aes.NewCipher(key)
 	if err != nil {
 		return nil, err
@@ -429,7 +431,7 @@ type cbcCipher struct {
 	oracleCamouflage uint32
 }
 
-func newCBCCipher(c cipher.Block, key, iv, macKey []byte, algs directionAlgorithms) (packetCipher, error) {
+func newCBCCipher(c cipher.Block, key, iv, macKey []byte, algs DirectionAlgorithms) (packetCipher, error) {
 	cbc := &cbcCipher{
 		mac:        macModes[algs.MAC].new(macKey),
 		decrypter:  cipher.NewCBCDecrypter(c, iv),
@@ -443,7 +445,7 @@ func newCBCCipher(c cipher.Block, key, iv, macKey []byte, algs directionAlgorith
 	return cbc, nil
 }
 
-func newAESCBCCipher(key, iv, macKey []byte, algs directionAlgorithms) (packetCipher, error) {
+func newAESCBCCipher(key, iv, macKey []byte, algs DirectionAlgorithms) (packetCipher, error) {
 	c, err := aes.NewCipher(key)
 	if err != nil {
 		return nil, err
@@ -457,7 +459,7 @@ func newAESCBCCipher(key, iv, macKey []byte, algs directionAlgorithms) (packetCi
 	return cbc, nil
 }
 
-func newTripleDESCBCCipher(key, iv, macKey []byte, algs directionAlgorithms) (packetCipher, error) {
+func newTripleDESCBCCipher(key, iv, macKey []byte, algs DirectionAlgorithms) (packetCipher, error) {
 	c, err := des.NewTripleDESCipher(key)
 	if err != nil {
 		return nil, err
@@ -635,8 +637,6 @@ func (c *cbcCipher) writeCipherPacket(seqNum uint32, w io.Writer, rand io.Reader
 	return nil
 }
 
-const chacha20Poly1305ID = "chacha20-poly1305@openssh.com"
-
 // chacha20Poly1305Cipher implements the chacha20-poly1305@openssh.com
 // AEAD, which is described here:
 //
@@ -650,7 +650,7 @@ type chacha20Poly1305Cipher struct {
 	buf        []byte
 }
 
-func newChaCha20Cipher(key, unusedIV, unusedMACKey []byte, unusedAlgs directionAlgorithms) (packetCipher, error) {
+func newChaCha20Cipher(key, unusedIV, unusedMACKey []byte, unusedAlgs DirectionAlgorithms) (packetCipher, error) {
 	if len(key) != 64 {
 		panic(len(key))
 	}

vendor/golang.org/x/crypto/ssh/client.go

@@ -110,6 +110,7 @@ func (c *connection) clientHandshake(dialAddress string, config *ClientConfig) e
 	}
 
 	c.sessionID = c.transport.getSessionID()
+	c.algorithms = c.transport.getAlgorithms()
 	return c.clientAuthenticate(config)
 }
 

vendor/golang.org/x/crypto/ssh/client_auth.go

@@ -9,6 +9,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"slices"
 	"strings"
 )
 
@@ -83,7 +84,7 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error {
 			// success
 			return nil
 		} else if ok == authFailure {
-			if m := auth.method(); !contains(tried, m) {
+			if m := auth.method(); !slices.Contains(tried, m) {
 				tried = append(tried, m)
 			}
 		}
@@ -97,7 +98,7 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error {
 	findNext:
 		for _, a := range config.Auth {
 			candidateMethod := a.method()
-			if contains(tried, candidateMethod) {
+			if slices.Contains(tried, candidateMethod) {
 				continue
 			}
 			for _, meth := range methods {
@@ -117,15 +118,6 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error {
 	return fmt.Errorf("ssh: unable to authenticate, attempted methods %v, no supported methods remain", tried)
 }
 
-func contains(list []string, e string) bool {
-	for _, s := range list {
-		if s == e {
-			return true
-		}
-	}
-	return false
-}
-
 // An AuthMethod represents an instance of an RFC 4252 authentication method.
 type AuthMethod interface {
 	// auth authenticates user over transport t.
@@ -255,7 +247,7 @@ func pickSignatureAlgorithm(signer Signer, extensions map[string][]byte) (MultiA
 		// Fallback to use if there is no "server-sig-algs" extension or a
 		// common algorithm cannot be found. We use the public key format if the
 		// MultiAlgorithmSigner supports it, otherwise we return an error.
-		if !contains(as.Algorithms(), underlyingAlgo(keyFormat)) {
+		if !slices.Contains(as.Algorithms(), underlyingAlgo(keyFormat)) {
 			return "", fmt.Errorf("ssh: no common public key signature algorithm, server only supports %q for key type %q, signer only supports %v",
 				underlyingAlgo(keyFormat), keyFormat, as.Algorithms())
 		}
@@ -284,12 +276,12 @@ func pickSignatureAlgorithm(signer Signer, extensions map[string][]byte) (MultiA
 	// Filter algorithms based on those supported by MultiAlgorithmSigner.
 	var keyAlgos []string
 	for _, algo := range algorithmsForKeyFormat(keyFormat) {
-		if contains(as.Algorithms(), underlyingAlgo(algo)) {
+		if slices.Contains(as.Algorithms(), underlyingAlgo(algo)) {
 			keyAlgos = append(keyAlgos, algo)
 		}
 	}
 
-	algo, err := findCommon("public key signature algorithm", keyAlgos, serverAlgos)
+	algo, err := findCommon("public key signature algorithm", keyAlgos, serverAlgos, true)
 	if err != nil {
 		// If there is no overlap, return the fallback algorithm to support
 		// servers that fail to list all supported algorithms.
@@ -334,7 +326,7 @@ func (cb publicKeyCallback) auth(session []byte, user string, c packetConn, rand
 		// the key try to use the obtained algorithm as if "server-sig-algs" had
 		// not been implemented if supported from the algorithm signer.
 		if !ok && idx < origSignersLen && isRSACert(algo) && algo != CertAlgoRSAv01 {
-			if contains(as.Algorithms(), KeyAlgoRSA) {
+			if slices.Contains(as.Algorithms(), KeyAlgoRSA) {
 				// We retry using the compat algorithm after all signers have
 				// been tried normally.
 				signers = append(signers, &multiAlgorithmSigner{
@@ -385,7 +377,7 @@ func (cb publicKeyCallback) auth(session []byte, user string, c packetConn, rand
 		// contain the "publickey" method, do not attempt to authenticate with any
 		// other keys.  According to RFC 4252 Section 7, the latter can occur when
 		// additional authentication methods are required.
-		if success == authSuccess || !contains(methods, cb.method()) {
+		if success == authSuccess || !slices.Contains(methods, cb.method()) {
 			return success, methods, err
 		}
 	}
@@ -434,7 +426,7 @@ func confirmKeyAck(key PublicKey, c packetConn) (bool, error) {
 			// servers send the key type instead. OpenSSH allows any algorithm
 			// that matches the public key, so we do the same.
 			// https://github.com/openssh/openssh-portable/blob/86bdd385/sshconnect2.c#L709
-			if !contains(algorithmsForKeyFormat(key.Type()), msg.Algo) {
+			if !slices.Contains(algorithmsForKeyFormat(key.Type()), msg.Algo) {
 				return false, nil
 			}
 			if !bytes.Equal(msg.PubKey, pubKey) {

vendor/golang.org/x/crypto/ssh/common.go

@@ -6,10 +6,12 @@ package ssh
 
 import (
 	"crypto"
+	"crypto/fips140"
 	"crypto/rand"
 	"fmt"
 	"io"
 	"math"
+	"slices"
 	"sync"
 
 	_ "crypto/sha1"
@@ -24,88 +26,298 @@ const (
 	serviceSSH      = "ssh-connection"
 )
 
-// supportedCiphers lists ciphers we support but might not recommend.
+// The ciphers currently or previously implemented by this library, to use in
-var supportedCiphers = []string{
+// [Config.Ciphers]. For a list, see the [Algorithms.Ciphers] returned by
-	"aes128-ctr", "aes192-ctr", "aes256-ctr",
+// [SupportedAlgorithms] or [InsecureAlgorithms].
-	"aes128-gcm@openssh.com", gcm256CipherID,
+const (
-	chacha20Poly1305ID,
+	CipherAES128GCM            = "aes128-gcm@openssh.com"
-	"arcfour256", "arcfour128", "arcfour",
+	CipherAES256GCM            = "aes256-gcm@openssh.com"
-	aes128cbcID,
+	CipherChaCha20Poly1305     = "chacha20-poly1305@openssh.com"
-	tripledescbcID,
+	CipherAES128CTR            = "aes128-ctr"
-}
+	CipherAES192CTR            = "aes192-ctr"
+	CipherAES256CTR            = "aes256-ctr"
+	InsecureCipherAES128CBC    = "aes128-cbc"
+	InsecureCipherTripleDESCBC = "3des-cbc"
+	InsecureCipherRC4          = "arcfour"
+	InsecureCipherRC4128       = "arcfour128"
+	InsecureCipherRC4256       = "arcfour256"
+)
 
-// preferredCiphers specifies the default preference for ciphers.
+// The key exchanges currently or previously implemented by this library, to use
-var preferredCiphers = []string{
+// in [Config.KeyExchanges]. For a list, see the
-	"aes128-gcm@openssh.com", gcm256CipherID,
+// [Algorithms.KeyExchanges] returned by [SupportedAlgorithms] or
-	chacha20Poly1305ID,
+// [InsecureAlgorithms].
-	"aes128-ctr", "aes192-ctr", "aes256-ctr",
+const (
-}
+	InsecureKeyExchangeDH1SHA1   = "diffie-hellman-group1-sha1"
+	InsecureKeyExchangeDH14SHA1  = "diffie-hellman-group14-sha1"
+	KeyExchangeDH14SHA256        = "diffie-hellman-group14-sha256"
+	KeyExchangeDH16SHA512        = "diffie-hellman-group16-sha512"
+	KeyExchangeECDHP256          = "ecdh-sha2-nistp256"
+	KeyExchangeECDHP384          = "ecdh-sha2-nistp384"
+	KeyExchangeECDHP521          = "ecdh-sha2-nistp521"
+	KeyExchangeCurve25519        = "curve25519-sha256"
+	InsecureKeyExchangeDHGEXSHA1 = "diffie-hellman-group-exchange-sha1"
+	KeyExchangeDHGEXSHA256       = "diffie-hellman-group-exchange-sha256"
+	// KeyExchangeMLKEM768X25519 is supported from Go 1.24.
+	KeyExchangeMLKEM768X25519 = "mlkem768x25519-sha256"
 
-// supportedKexAlgos specifies the supported key-exchange algorithms in
+	// An alias for KeyExchangeCurve25519SHA256. This kex ID will be added if
-// preference order.
+	// KeyExchangeCurve25519SHA256 is requested for backward compatibility with
-var supportedKexAlgos = []string{
+	// OpenSSH versions up to 7.2.
-	kexAlgoCurve25519SHA256, kexAlgoCurve25519SHA256LibSSH,
+	keyExchangeCurve25519LibSSH = "curve25519-sha256@libssh.org"
-	// P384 and P521 are not constant-time yet, but since we don't
+)
-	// reuse ephemeral keys, using them for ECDH should be OK.
-	kexAlgoECDH256, kexAlgoECDH384, kexAlgoECDH521,
-	kexAlgoDH14SHA256, kexAlgoDH16SHA512, kexAlgoDH14SHA1,
-	kexAlgoDH1SHA1,
-}
 
-// serverForbiddenKexAlgos contains key exchange algorithms, that are forbidden
+// The message authentication code (MAC) currently or previously implemented by
-// for the server half.
+// this library, to use in [Config.MACs]. For a list, see the
-var serverForbiddenKexAlgos = map[string]struct{}{
+// [Algorithms.MACs] returned by [SupportedAlgorithms] or
-	kexAlgoDHGEXSHA1:   {}, // server half implementation is only minimal to satisfy the automated tests
+// [InsecureAlgorithms].
-	kexAlgoDHGEXSHA256: {}, // server half implementation is only minimal to satisfy the automated tests
+const (
-}
+	HMACSHA256ETM      = "hmac-sha2-256-etm@openssh.com"
-
+	HMACSHA512ETM      = "hmac-sha2-512-etm@openssh.com"
-// preferredKexAlgos specifies the default preference for key-exchange
+	HMACSHA256         = "hmac-sha2-256"
-// algorithms in preference order. The diffie-hellman-group16-sha512 algorithm
+	HMACSHA512         = "hmac-sha2-512"
-// is disabled by default because it is a bit slower than the others.
+	HMACSHA1           = "hmac-sha1"
-var preferredKexAlgos = []string{
+	InsecureHMACSHA196 = "hmac-sha1-96"
-	kexAlgoCurve25519SHA256, kexAlgoCurve25519SHA256LibSSH,
+)
-	kexAlgoECDH256, kexAlgoECDH384, kexAlgoECDH521,
-	kexAlgoDH14SHA256, kexAlgoDH14SHA1,
-}
-
-// supportedHostKeyAlgos specifies the supported host-key algorithms (i.e. methods
-// of authenticating servers) in preference order.
-var supportedHostKeyAlgos = []string{
-	CertAlgoRSASHA256v01, CertAlgoRSASHA512v01,
-	CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01,
-	CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoED25519v01,
-
-	KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521,
-	KeyAlgoRSASHA256, KeyAlgoRSASHA512,
-	KeyAlgoRSA, KeyAlgoDSA,
 
+var (
+	// supportedKexAlgos specifies key-exchange algorithms implemented by this
+	// package in preference order, excluding those with security issues.
+	supportedKexAlgos = []string{
+		KeyExchangeMLKEM768X25519,
+		KeyExchangeCurve25519,
+		KeyExchangeECDHP256,
+		KeyExchangeECDHP384,
+		KeyExchangeECDHP521,
+		KeyExchangeDH14SHA256,
+		KeyExchangeDH16SHA512,
+		KeyExchangeDHGEXSHA256,
+	}
+	// defaultKexAlgos specifies the default preference for key-exchange
+	// algorithms in preference order.
+	defaultKexAlgos = []string{
+		KeyExchangeMLKEM768X25519,
+		KeyExchangeCurve25519,
+		KeyExchangeECDHP256,
+		KeyExchangeECDHP384,
+		KeyExchangeECDHP521,
+		KeyExchangeDH14SHA256,
+		InsecureKeyExchangeDH14SHA1,
+	}
+	// insecureKexAlgos specifies key-exchange algorithms implemented by this
+	// package and which have security issues.
+	insecureKexAlgos = []string{
+		InsecureKeyExchangeDH14SHA1,
+		InsecureKeyExchangeDH1SHA1,
+		InsecureKeyExchangeDHGEXSHA1,
+	}
+	// supportedCiphers specifies cipher algorithms implemented by this package
+	// in preference order, excluding those with security issues.
+	supportedCiphers = []string{
+		CipherAES128GCM,
+		CipherAES256GCM,
+		CipherChaCha20Poly1305,
+		CipherAES128CTR,
+		CipherAES192CTR,
+		CipherAES256CTR,
+	}
+	// defaultCiphers specifies the default preference for ciphers algorithms
+	// in preference order.
+	defaultCiphers = supportedCiphers
+	// insecureCiphers specifies cipher algorithms implemented by this
+	// package and which have security issues.
+	insecureCiphers = []string{
+		InsecureCipherAES128CBC,
+		InsecureCipherTripleDESCBC,
+		InsecureCipherRC4256,
+		InsecureCipherRC4128,
+		InsecureCipherRC4,
+	}
+	// supportedMACs specifies MAC algorithms implemented by this package in
+	// preference order, excluding those with security issues.
+	supportedMACs = []string{
+		HMACSHA256ETM,
+		HMACSHA512ETM,
+		HMACSHA256,
+		HMACSHA512,
+		HMACSHA1,
+	}
+	// defaultMACs specifies the default preference for MAC algorithms in
+	// preference order.
+	defaultMACs = []string{
+		HMACSHA256ETM,
+		HMACSHA512ETM,
+		HMACSHA256,
+		HMACSHA512,
+		HMACSHA1,
+		InsecureHMACSHA196,
+	}
+	// insecureMACs specifies MAC algorithms implemented by this
+	// package and which have security issues.
+	insecureMACs = []string{
+		InsecureHMACSHA196,
+	}
+	// supportedHostKeyAlgos specifies the supported host-key algorithms (i.e.
+	// methods of authenticating servers) implemented by this package in
+	// preference order, excluding those with security issues.
+	supportedHostKeyAlgos = []string{
+		CertAlgoRSASHA256v01,
+		CertAlgoRSASHA512v01,
+		CertAlgoECDSA256v01,
+		CertAlgoECDSA384v01,
+		CertAlgoECDSA521v01,
+		CertAlgoED25519v01,
+		KeyAlgoRSASHA256,
+		KeyAlgoRSASHA512,
+		KeyAlgoECDSA256,
+		KeyAlgoECDSA384,
+		KeyAlgoECDSA521,
 		KeyAlgoED25519,
+	}
+	// defaultHostKeyAlgos specifies the default preference for host-key
+	// algorithms in preference order.
+	defaultHostKeyAlgos = []string{
+		CertAlgoRSASHA256v01,
+		CertAlgoRSASHA512v01,
+		CertAlgoRSAv01,
+		InsecureCertAlgoDSAv01,
+		CertAlgoECDSA256v01,
+		CertAlgoECDSA384v01,
+		CertAlgoECDSA521v01,
+		CertAlgoED25519v01,
+		KeyAlgoECDSA256,
+		KeyAlgoECDSA384,
+		KeyAlgoECDSA521,
+		KeyAlgoRSASHA256,
+		KeyAlgoRSASHA512,
+		KeyAlgoRSA,
+		InsecureKeyAlgoDSA,
+		KeyAlgoED25519,
+	}
+	// insecureHostKeyAlgos specifies host-key algorithms implemented by this
+	// package and which have security issues.
+	insecureHostKeyAlgos = []string{
+		KeyAlgoRSA,
+		InsecureKeyAlgoDSA,
+		CertAlgoRSAv01,
+		InsecureCertAlgoDSAv01,
+	}
+	// supportedPubKeyAuthAlgos specifies the supported client public key
+	// authentication algorithms. Note that this doesn't include certificate
+	// types since those use the underlying algorithm. Order is irrelevant.
+	supportedPubKeyAuthAlgos = []string{
+		KeyAlgoED25519,
+		KeyAlgoSKED25519,
+		KeyAlgoSKECDSA256,
+		KeyAlgoECDSA256,
+		KeyAlgoECDSA384,
+		KeyAlgoECDSA521,
+		KeyAlgoRSASHA256,
+		KeyAlgoRSASHA512,
+	}
+
+	// defaultPubKeyAuthAlgos specifies the preferred client public key
+	// authentication algorithms. This list is sent to the client if it supports
+	// the server-sig-algs extension. Order is irrelevant.
+	defaultPubKeyAuthAlgos = []string{
+		KeyAlgoED25519,
+		KeyAlgoSKED25519,
+		KeyAlgoSKECDSA256,
+		KeyAlgoECDSA256,
+		KeyAlgoECDSA384,
+		KeyAlgoECDSA521,
+		KeyAlgoRSASHA256,
+		KeyAlgoRSASHA512,
+		KeyAlgoRSA,
+		InsecureKeyAlgoDSA,
+	}
+	// insecurePubKeyAuthAlgos specifies client public key authentication
+	// algorithms implemented by this package and which have security issues.
+	insecurePubKeyAuthAlgos = []string{
+		KeyAlgoRSA,
+		InsecureKeyAlgoDSA,
+	}
+)
+
+// NegotiatedAlgorithms defines algorithms negotiated between client and server.
+type NegotiatedAlgorithms struct {
+	KeyExchange string
+	HostKey     string
+	Read        DirectionAlgorithms
+	Write       DirectionAlgorithms
 }
 
-// supportedMACs specifies a default set of MAC algorithms in preference order.
+// Algorithms defines a set of algorithms that can be configured in the client
-// This is based on RFC 4253, section 6.4, but with hmac-md5 variants removed
+// or server config for negotiation during a handshake.
-// because they have reached the end of their useful life.
+type Algorithms struct {
-var supportedMACs = []string{
+	KeyExchanges   []string
-	"hmac-sha2-256-etm@openssh.com", "hmac-sha2-512-etm@openssh.com", "hmac-sha2-256", "hmac-sha2-512", "hmac-sha1", "hmac-sha1-96",
+	Ciphers        []string
+	MACs           []string
+	HostKeys       []string
+	PublicKeyAuths []string
+}
+
+func init() {
+	if fips140.Enabled() {
+		defaultHostKeyAlgos = slices.DeleteFunc(defaultHostKeyAlgos, func(algo string) bool {
+			_, err := hashFunc(underlyingAlgo(algo))
+			return err != nil
+		})
+		defaultPubKeyAuthAlgos = slices.DeleteFunc(defaultPubKeyAuthAlgos, func(algo string) bool {
+			_, err := hashFunc(underlyingAlgo(algo))
+			return err != nil
+		})
+	}
+}
+
+func hashFunc(format string) (crypto.Hash, error) {
+	switch format {
+	case KeyAlgoRSASHA256, KeyAlgoECDSA256, KeyAlgoSKED25519, KeyAlgoSKECDSA256:
+		return crypto.SHA256, nil
+	case KeyAlgoECDSA384:
+		return crypto.SHA384, nil
+	case KeyAlgoRSASHA512, KeyAlgoECDSA521:
+		return crypto.SHA512, nil
+	case KeyAlgoED25519:
+		// KeyAlgoED25519 doesn't pre-hash.
+		return 0, nil
+	case KeyAlgoRSA, InsecureKeyAlgoDSA:
+		if fips140.Enabled() {
+			return 0, fmt.Errorf("ssh: hash algorithm for format %q not allowed in FIPS 140 mode", format)
+		}
+		return crypto.SHA1, nil
+	default:
+		return 0, fmt.Errorf("ssh: hash algorithm for format %q not mapped", format)
+	}
+}
+
+// SupportedAlgorithms returns algorithms currently implemented by this package,
+// excluding those with security issues, which are returned by
+// InsecureAlgorithms. The algorithms listed here are in preference order.
+func SupportedAlgorithms() Algorithms {
+	return Algorithms{
+		Ciphers:        slices.Clone(supportedCiphers),
+		MACs:           slices.Clone(supportedMACs),
+		KeyExchanges:   slices.Clone(supportedKexAlgos),
+		HostKeys:       slices.Clone(supportedHostKeyAlgos),
+		PublicKeyAuths: slices.Clone(supportedPubKeyAuthAlgos),
+	}
+}
+
+// InsecureAlgorithms returns algorithms currently implemented by this package
+// and which have security issues.
+func InsecureAlgorithms() Algorithms {
+	return Algorithms{
+		KeyExchanges:   slices.Clone(insecureKexAlgos),
+		Ciphers:        slices.Clone(insecureCiphers),
+		MACs:           slices.Clone(insecureMACs),
+		HostKeys:       slices.Clone(insecureHostKeyAlgos),
+		PublicKeyAuths: slices.Clone(insecurePubKeyAuthAlgos),
+	}
 }
 
 var supportedCompressions = []string{compressionNone}
 
-// hashFuncs keeps the mapping of supported signature algorithms to their
-// respective hashes needed for signing and verification.
-var hashFuncs = map[string]crypto.Hash{
-	KeyAlgoRSA:       crypto.SHA1,
-	KeyAlgoRSASHA256: crypto.SHA256,
-	KeyAlgoRSASHA512: crypto.SHA512,
-	KeyAlgoDSA:       crypto.SHA1,
-	KeyAlgoECDSA256:  crypto.SHA256,
-	KeyAlgoECDSA384:  crypto.SHA384,
-	KeyAlgoECDSA521:  crypto.SHA512,
-	// KeyAlgoED25519 doesn't pre-hash.
-	KeyAlgoSKECDSA256: crypto.SHA256,
-	KeyAlgoSKED25519:  crypto.SHA256,
-}
-
 // algorithmsForKeyFormat returns the supported signature algorithms for a given
 // public key format (PublicKey.Type), in order of preference. See RFC 8332,
 // Section 2. See also the note in sendKexInit on backwards compatibility.
@@ -120,11 +332,40 @@ func algorithmsForKeyFormat(keyFormat string) []string {
 	}
 }
 
+// keyFormatForAlgorithm returns the key format corresponding to the given
+// signature algorithm. It returns an empty string if the signature algorithm is
+// invalid or unsupported.
+func keyFormatForAlgorithm(sigAlgo string) string {
+	switch sigAlgo {
+	case KeyAlgoRSA, KeyAlgoRSASHA256, KeyAlgoRSASHA512:
+		return KeyAlgoRSA
+	case CertAlgoRSAv01, CertAlgoRSASHA256v01, CertAlgoRSASHA512v01:
+		return CertAlgoRSAv01
+	case KeyAlgoED25519,
+		KeyAlgoSKED25519,
+		KeyAlgoSKECDSA256,
+		KeyAlgoECDSA256,
+		KeyAlgoECDSA384,
+		KeyAlgoECDSA521,
+		InsecureKeyAlgoDSA,
+		InsecureCertAlgoDSAv01,
+		CertAlgoECDSA256v01,
+		CertAlgoECDSA384v01,
+		CertAlgoECDSA521v01,
+		CertAlgoSKECDSA256v01,
+		CertAlgoED25519v01,
+		CertAlgoSKED25519v01:
+		return sigAlgo
+	default:
+		return ""
+	}
+}
+
 // isRSA returns whether algo is a supported RSA algorithm, including certificate
 // algorithms.
 func isRSA(algo string) bool {
 	algos := algorithmsForKeyFormat(KeyAlgoRSA)
-	return contains(algos, underlyingAlgo(algo))
+	return slices.Contains(algos, underlyingAlgo(algo))
 }
 
 func isRSACert(algo string) bool {
@@ -135,18 +376,6 @@ func isRSACert(algo string) bool {
 	return isRSA(algo)
 }
 
-// supportedPubKeyAuthAlgos specifies the supported client public key
-// authentication algorithms. Note that this doesn't include certificate types
-// since those use the underlying algorithm. This list is sent to the client if
-// it supports the server-sig-algs extension. Order is irrelevant.
-var supportedPubKeyAuthAlgos = []string{
-	KeyAlgoED25519,
-	KeyAlgoSKED25519, KeyAlgoSKECDSA256,
-	KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521,
-	KeyAlgoRSASHA256, KeyAlgoRSASHA512, KeyAlgoRSA,
-	KeyAlgoDSA,
-}
-
 // unexpectedMessageError results when the SSH message that we received didn't
 // match what we wanted.
 func unexpectedMessageError(expected, got uint8) error {
@@ -158,7 +387,7 @@ func parseError(tag uint8) error {
 	return fmt.Errorf("ssh: parse error in message type %d", tag)
 }
 
-func findCommon(what string, client []string, server []string) (common string, err error) {
+func findCommon(what string, client []string, server []string, isClient bool) (string, error) {
 	for _, c := range client {
 		for _, s := range server {
 			if c == s {
@@ -166,23 +395,49 @@ func findCommon(what string, client []string, server []string) (common string, e
 			}
 		}
 	}
-	return "", fmt.Errorf("ssh: no common algorithm for %s; client offered: %v, server offered: %v", what, client, server)
+	err := &AlgorithmNegotiationError{
+		What: what,
+	}
+	if isClient {
+		err.SupportedAlgorithms = client
+		err.RequestedAlgorithms = server
+	} else {
+		err.SupportedAlgorithms = server
+		err.RequestedAlgorithms = client
+	}
+	return "", err
 }
 
-// directionAlgorithms records algorithm choices in one direction (either read or write)
+// AlgorithmNegotiationError defines the error returned if the client and the
-type directionAlgorithms struct {
+// server cannot agree on an algorithm for key exchange, host key, cipher, MAC.
+type AlgorithmNegotiationError struct {
+	What string
+	// RequestedAlgorithms lists the algorithms supported by the peer.
+	RequestedAlgorithms []string
+	// SupportedAlgorithms lists the algorithms supported on our side.
+	SupportedAlgorithms []string
+}
+
+func (a *AlgorithmNegotiationError) Error() string {
+	return fmt.Sprintf("ssh: no common algorithm for %s; we offered: %v, peer offered: %v",
+		a.What, a.SupportedAlgorithms, a.RequestedAlgorithms)
+}
+
+// DirectionAlgorithms defines the algorithms negotiated in one direction
+// (either read or write).
+type DirectionAlgorithms struct {
 	Cipher      string
 	MAC         string
-	Compression string
+	compression string
 }
 
 // rekeyBytes returns a rekeying intervals in bytes.
-func (a *directionAlgorithms) rekeyBytes() int64 {
+func (a *DirectionAlgorithms) rekeyBytes() int64 {
 	// According to RFC 4344 block ciphers should rekey after
 	// 2^(BLOCKSIZE/4) blocks. For all AES flavors BLOCKSIZE is
 	// 128.
 	switch a.Cipher {
-	case "aes128-ctr", "aes192-ctr", "aes256-ctr", gcm128CipherID, gcm256CipherID, aes128cbcID:
+	case CipherAES128CTR, CipherAES192CTR, CipherAES256CTR, CipherAES128GCM, CipherAES256GCM, InsecureCipherAES128CBC:
 		return 16 * (1 << 32)
 
 	}
@@ -192,66 +447,59 @@ func (a *directionAlgorithms) rekeyBytes() int64 {
 }
 
 var aeadCiphers = map[string]bool{
-	gcm128CipherID:     true,
+	CipherAES128GCM:        true,
-	gcm256CipherID:     true,
+	CipherAES256GCM:        true,
-	chacha20Poly1305ID: true,
+	CipherChaCha20Poly1305: true,
 }
 
-type algorithms struct {
+func findAgreedAlgorithms(isClient bool, clientKexInit, serverKexInit *kexInitMsg) (algs *NegotiatedAlgorithms, err error) {
-	kex     string
+	result := &NegotiatedAlgorithms{}
-	hostKey string
-	w       directionAlgorithms
-	r       directionAlgorithms
-}
 
-func findAgreedAlgorithms(isClient bool, clientKexInit, serverKexInit *kexInitMsg) (algs *algorithms, err error) {
+	result.KeyExchange, err = findCommon("key exchange", clientKexInit.KexAlgos, serverKexInit.KexAlgos, isClient)
-	result := &algorithms{}
-
-	result.kex, err = findCommon("key exchange", clientKexInit.KexAlgos, serverKexInit.KexAlgos)
 	if err != nil {
 		return
 	}
 
-	result.hostKey, err = findCommon("host key", clientKexInit.ServerHostKeyAlgos, serverKexInit.ServerHostKeyAlgos)
+	result.HostKey, err = findCommon("host key", clientKexInit.ServerHostKeyAlgos, serverKexInit.ServerHostKeyAlgos, isClient)
 	if err != nil {
 		return
 	}
 
-	stoc, ctos := &result.w, &result.r
+	stoc, ctos := &result.Write, &result.Read
 	if isClient {
 		ctos, stoc = stoc, ctos
 	}
 
-	ctos.Cipher, err = findCommon("client to server cipher", clientKexInit.CiphersClientServer, serverKexInit.CiphersClientServer)
+	ctos.Cipher, err = findCommon("client to server cipher", clientKexInit.CiphersClientServer, serverKexInit.CiphersClientServer, isClient)
 	if err != nil {
 		return
 	}
 
-	stoc.Cipher, err = findCommon("server to client cipher", clientKexInit.CiphersServerClient, serverKexInit.CiphersServerClient)
+	stoc.Cipher, err = findCommon("server to client cipher", clientKexInit.CiphersServerClient, serverKexInit.CiphersServerClient, isClient)
 	if err != nil {
 		return
 	}
 
 	if !aeadCiphers[ctos.Cipher] {
-		ctos.MAC, err = findCommon("client to server MAC", clientKexInit.MACsClientServer, serverKexInit.MACsClientServer)
+		ctos.MAC, err = findCommon("client to server MAC", clientKexInit.MACsClientServer, serverKexInit.MACsClientServer, isClient)
 		if err != nil {
 			return
 		}
 	}
 
 	if !aeadCiphers[stoc.Cipher] {
-		stoc.MAC, err = findCommon("server to client MAC", clientKexInit.MACsServerClient, serverKexInit.MACsServerClient)
+		stoc.MAC, err = findCommon("server to client MAC", clientKexInit.MACsServerClient, serverKexInit.MACsServerClient, isClient)
 		if err != nil {
 			return
 		}
 	}
 
-	ctos.Compression, err = findCommon("client to server compression", clientKexInit.CompressionClientServer, serverKexInit.CompressionClientServer)
+	ctos.compression, err = findCommon("client to server compression", clientKexInit.CompressionClientServer, serverKexInit.CompressionClientServer, isClient)
 	if err != nil {
 		return
 	}
 
-	stoc.Compression, err = findCommon("server to client compression", clientKexInit.CompressionServerClient, serverKexInit.CompressionServerClient)
+	stoc.compression, err = findCommon("server to client compression", clientKexInit.CompressionServerClient, serverKexInit.CompressionServerClient, isClient)
 	if err != nil {
 		return
 	}
@@ -297,7 +545,7 @@ func (c *Config) SetDefaults() {
 		c.Rand = rand.Reader
 	}
 	if c.Ciphers == nil {
-		c.Ciphers = preferredCiphers
+		c.Ciphers = defaultCiphers
 	}
 	var ciphers []string
 	for _, c := range c.Ciphers {
@@ -309,19 +557,22 @@ func (c *Config) SetDefaults() {
 	c.Ciphers = ciphers
 
 	if c.KeyExchanges == nil {
-		c.KeyExchanges = preferredKexAlgos
+		c.KeyExchanges = defaultKexAlgos
 	}
 	var kexs []string
 	for _, k := range c.KeyExchanges {
 		if kexAlgoMap[k] != nil {
 			// Ignore the KEX if we have no kexAlgoMap definition.
 			kexs = append(kexs, k)
+			if k == KeyExchangeCurve25519 && !slices.Contains(c.KeyExchanges, keyExchangeCurve25519LibSSH) {
+				kexs = append(kexs, keyExchangeCurve25519LibSSH)
+			}
 		}
 	}
 	c.KeyExchanges = kexs
 
 	if c.MACs == nil {
-		c.MACs = supportedMACs
+		c.MACs = defaultMACs
 	}
 	var macs []string
 	for _, m := range c.MACs {

vendor/golang.org/x/crypto/ssh/connection.go

@@ -74,6 +74,13 @@ type Conn interface {
 	//   Disconnect
 }
 
+// AlgorithmsConnMetadata is a ConnMetadata that can return the algorithms
+// negotiated between client and server.
+type AlgorithmsConnMetadata interface {
+	ConnMetadata
+	Algorithms() NegotiatedAlgorithms
+}
+
 // DiscardRequests consumes and rejects all requests from the
 // passed-in channel.
 func DiscardRequests(in <-chan *Request) {
@@ -106,6 +113,7 @@ type sshConn struct {
 	sessionID     []byte
 	clientVersion []byte
 	serverVersion []byte
+	algorithms    NegotiatedAlgorithms
 }
 
 func dup(src []byte) []byte {
@@ -141,3 +149,7 @@ func (c *sshConn) ClientVersion() []byte {
 func (c *sshConn) ServerVersion() []byte {
 	return dup(c.serverVersion)
 }
+
+func (c *sshConn) Algorithms() NegotiatedAlgorithms {
+	return c.algorithms
+}

vendor/golang.org/x/crypto/ssh/doc.go

@@ -16,8 +16,19 @@ References:
 	[PROTOCOL]: https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL?rev=HEAD
 	[PROTOCOL.certkeys]: http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.certkeys?rev=HEAD
 	[SSH-PARAMETERS]:    http://www.iana.org/assignments/ssh-parameters/ssh-parameters.xml#ssh-parameters-1
+	[SSH-CERTS]:	https://datatracker.ietf.org/doc/html/draft-miller-ssh-cert-01
+	[FIPS 140-3 mode]: https://go.dev/doc/security/fips140
 
 This package does not fall under the stability promise of the Go language itself,
 so its API may be changed when pressing needs arise.
+
+# FIPS 140-3 mode
+
+When the program is in [FIPS 140-3 mode], this package behaves as if only SP
+800-140C and SP 800-140D approved cipher suites, signature algorithms,
+certificate public key types and sizes, and key exchange and derivation
+algorithms were implemented. Others are silently ignored and not negotiated, or
+rejected. This set may depend on the algorithms supported by the FIPS 140-3 Go
+Cryptographic Module selected with GOFIPS140, and may change across Go versions.
 */
 package ssh

vendor/golang.org/x/crypto/ssh/handshake.go

@@ -10,6 +10,7 @@ import (
 	"io"
 	"log"
 	"net"
+	"slices"
 	"strings"
 	"sync"
 )
@@ -38,7 +39,7 @@ type keyingTransport interface {
 	// prepareKeyChange sets up a key change. The key change for a
 	// direction will be effected if a msgNewKeys message is sent
 	// or received.
-	prepareKeyChange(*algorithms, *kexResult) error
+	prepareKeyChange(*NegotiatedAlgorithms, *kexResult) error
 
 	// setStrictMode sets the strict KEX mode, notably triggering
 	// sequence number resets on sending or receiving msgNewKeys.
@@ -115,7 +116,7 @@ type handshakeTransport struct {
 	bannerCallback BannerCallback
 
 	// Algorithms agreed in the last key exchange.
-	algorithms *algorithms
+	algorithms *NegotiatedAlgorithms
 
 	// Counters exclusively owned by readLoop.
 	readPacketsLeft uint32
@@ -164,7 +165,7 @@ func newClientTransport(conn keyingTransport, clientVersion, serverVersion []byt
 	if config.HostKeyAlgorithms != nil {
 		t.hostKeyAlgorithms = config.HostKeyAlgorithms
 	} else {
-		t.hostKeyAlgorithms = supportedHostKeyAlgos
+		t.hostKeyAlgorithms = defaultHostKeyAlgos
 	}
 	go t.readLoop()
 	go t.kexLoop()
@@ -184,6 +185,10 @@ func (t *handshakeTransport) getSessionID() []byte {
 	return t.sessionID
 }
 
+func (t *handshakeTransport) getAlgorithms() NegotiatedAlgorithms {
+	return *t.algorithms
+}
+
 // waitSession waits for the session to be established. This should be
 // the first thing to call after instantiating handshakeTransport.
 func (t *handshakeTransport) waitSession() error {
@@ -290,7 +295,7 @@ func (t *handshakeTransport) resetWriteThresholds() {
 	if t.config.RekeyThreshold > 0 {
 		t.writeBytesLeft = int64(t.config.RekeyThreshold)
 	} else if t.algorithms != nil {
-		t.writeBytesLeft = t.algorithms.w.rekeyBytes()
+		t.writeBytesLeft = t.algorithms.Write.rekeyBytes()
 	} else {
 		t.writeBytesLeft = 1 << 30
 	}
@@ -407,7 +412,7 @@ func (t *handshakeTransport) resetReadThresholds() {
 	if t.config.RekeyThreshold > 0 {
 		t.readBytesLeft = int64(t.config.RekeyThreshold)
 	} else if t.algorithms != nil {
-		t.readBytesLeft = t.algorithms.r.rekeyBytes()
+		t.readBytesLeft = t.algorithms.Read.rekeyBytes()
 	} else {
 		t.readBytesLeft = 1 << 30
 	}
@@ -523,7 +528,7 @@ func (t *handshakeTransport) sendKexInit() error {
 			switch s := k.(type) {
 			case MultiAlgorithmSigner:
 				for _, algo := range algorithmsForKeyFormat(keyFormat) {
-					if contains(s.Algorithms(), underlyingAlgo(algo)) {
+					if slices.Contains(s.Algorithms(), underlyingAlgo(algo)) {
 						msg.ServerHostKeyAlgos = append(msg.ServerHostKeyAlgos, algo)
 					}
 				}
@@ -675,7 +680,7 @@ func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error {
 		return err
 	}
 
-	if t.sessionID == nil && ((isClient && contains(serverInit.KexAlgos, kexStrictServer)) || (!isClient && contains(clientInit.KexAlgos, kexStrictClient))) {
+	if t.sessionID == nil && ((isClient && slices.Contains(serverInit.KexAlgos, kexStrictServer)) || (!isClient && slices.Contains(clientInit.KexAlgos, kexStrictClient))) {
 		t.strictMode = true
 		if err := t.conn.setStrictMode(); err != nil {
 			return err
@@ -700,9 +705,9 @@ func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error {
 		}
 	}
 
-	kex, ok := kexAlgoMap[t.algorithms.kex]
+	kex, ok := kexAlgoMap[t.algorithms.KeyExchange]
 	if !ok {
-		return fmt.Errorf("ssh: unexpected key exchange algorithm %v", t.algorithms.kex)
+		return fmt.Errorf("ssh: unexpected key exchange algorithm %v", t.algorithms.KeyExchange)
 	}
 
 	var result *kexResult
@@ -732,7 +737,7 @@ func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error {
 	// On the server side, after the first SSH_MSG_NEWKEYS, send a SSH_MSG_EXT_INFO
 	// message with the server-sig-algs extension if the client supports it. See
 	// RFC 8308, Sections 2.4 and 3.1, and [PROTOCOL], Section 1.9.
-	if !isClient && firstKeyExchange && contains(clientInit.KexAlgos, "ext-info-c") {
+	if !isClient && firstKeyExchange && slices.Contains(clientInit.KexAlgos, "ext-info-c") {
 		supportedPubKeyAuthAlgosList := strings.Join(t.publicKeyAuthAlgorithms, ",")
 		extInfo := &extInfoMsg{
 			NumExtensions: 2,
@@ -786,7 +791,7 @@ func (a algorithmSignerWrapper) SignWithAlgorithm(rand io.Reader, data []byte, a
 func pickHostKey(hostKeys []Signer, algo string) AlgorithmSigner {
 	for _, k := range hostKeys {
 		if s, ok := k.(MultiAlgorithmSigner); ok {
-			if !contains(s.Algorithms(), underlyingAlgo(algo)) {
+			if !slices.Contains(s.Algorithms(), underlyingAlgo(algo)) {
 				continue
 			}
 		}
@@ -809,12 +814,12 @@ func pickHostKey(hostKeys []Signer, algo string) AlgorithmSigner {
 }
 
 func (t *handshakeTransport) server(kex kexAlgorithm, magics *handshakeMagics) (*kexResult, error) {
-	hostKey := pickHostKey(t.hostKeys, t.algorithms.hostKey)
+	hostKey := pickHostKey(t.hostKeys, t.algorithms.HostKey)
 	if hostKey == nil {
 		return nil, errors.New("ssh: internal error: negotiated unsupported signature type")
 	}
 
-	r, err := kex.Server(t.conn, t.config.Rand, magics, hostKey, t.algorithms.hostKey)
+	r, err := kex.Server(t.conn, t.config.Rand, magics, hostKey, t.algorithms.HostKey)
 	return r, err
 }
 
@@ -829,7 +834,7 @@ func (t *handshakeTransport) client(kex kexAlgorithm, magics *handshakeMagics) (
 		return nil, err
 	}
 
-	if err := verifyHostKeySignature(hostKey, t.algorithms.hostKey, result); err != nil {
+	if err := verifyHostKeySignature(hostKey, t.algorithms.HostKey, result); err != nil {
 		return nil, err
 	}
 

vendor/golang.org/x/crypto/ssh/kex.go

@@ -8,33 +8,31 @@ import (
 	"crypto"
 	"crypto/ecdsa"
 	"crypto/elliptic"
+	"crypto/fips140"
 	"crypto/rand"
-	"crypto/subtle"
 	"encoding/binary"
 	"errors"
 	"fmt"
 	"io"
 	"math/big"
+	"slices"
 
 	"golang.org/x/crypto/curve25519"
 )
 
 const (
-	kexAlgoDH1SHA1                = "diffie-hellman-group1-sha1"
+	// This is the group called diffie-hellman-group1-sha1 in RFC 4253 and
-	kexAlgoDH14SHA1               = "diffie-hellman-group14-sha1"
+	// Oakley Group 2 in RFC 2409.
-	kexAlgoDH14SHA256             = "diffie-hellman-group14-sha256"
+	oakleyGroup2 = "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF"
-	kexAlgoDH16SHA512             = "diffie-hellman-group16-sha512"
+	// This is the group called diffie-hellman-group14-sha1 in RFC 4253 and
-	kexAlgoECDH256                = "ecdh-sha2-nistp256"
+	// Oakley Group 14 in RFC 3526.
-	kexAlgoECDH384                = "ecdh-sha2-nistp384"
+	oakleyGroup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
-	kexAlgoECDH521                = "ecdh-sha2-nistp521"
+	// This is the group called diffie-hellman-group15-sha512 in RFC 8268 and
-	kexAlgoCurve25519SHA256LibSSH = "curve25519-sha256@libssh.org"
+	// Oakley Group 15 in RFC 3526.
-	kexAlgoCurve25519SHA256       = "curve25519-sha256"
+	oakleyGroup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
-
+	// This is the group called diffie-hellman-group16-sha512 in RFC 8268 and
-	// For the following kex only the client half contains a production
+	// Oakley Group 16 in RFC 3526.
-	// ready implementation. The server half only consists of a minimal
+	oakleyGroup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
-	// implementation to satisfy the automated tests.
-	kexAlgoDHGEXSHA1   = "diffie-hellman-group-exchange-sha1"
-	kexAlgoDHGEXSHA256 = "diffie-hellman-group-exchange-sha256"
 )
 
 // kexResult captures the outcome of a key exchange.
@@ -399,56 +397,64 @@ func ecHash(curve elliptic.Curve) crypto.Hash {
 	return crypto.SHA512
 }
 
+// kexAlgoMap defines the supported KEXs. KEXs not included are not supported
+// and will not be negotiated, even if explicitly configured. When FIPS mode is
+// enabled, only FIPS-approved algorithms are included.
 var kexAlgoMap = map[string]kexAlgorithm{}
 
 func init() {
-	// This is the group called diffie-hellman-group1-sha1 in
+	// mlkem768x25519-sha256 we'll work with fips140=on but not fips140=only
-	// RFC 4253 and Oakley Group 2 in RFC 2409.
+	// until Go 1.26.
-	p, _ := new(big.Int).SetString("FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF", 16)
+	kexAlgoMap[KeyExchangeMLKEM768X25519] = &mlkem768WithCurve25519sha256{}
-	kexAlgoMap[kexAlgoDH1SHA1] = &dhGroup{
+	kexAlgoMap[KeyExchangeECDHP521] = &ecdh{elliptic.P521()}
+	kexAlgoMap[KeyExchangeECDHP384] = &ecdh{elliptic.P384()}
+	kexAlgoMap[KeyExchangeECDHP256] = &ecdh{elliptic.P256()}
+
+	if fips140.Enabled() {
+		defaultKexAlgos = slices.DeleteFunc(defaultKexAlgos, func(algo string) bool {
+			_, ok := kexAlgoMap[algo]
+			return !ok
+		})
+		return
+	}
+
+	p, _ := new(big.Int).SetString(oakleyGroup2, 16)
+	kexAlgoMap[InsecureKeyExchangeDH1SHA1] = &dhGroup{
 		g:        new(big.Int).SetInt64(2),
 		p:        p,
 		pMinus1:  new(big.Int).Sub(p, bigOne),
 		hashFunc: crypto.SHA1,
 	}
 
-	// This are the groups called diffie-hellman-group14-sha1 and
+	p, _ = new(big.Int).SetString(oakleyGroup14, 16)
-	// diffie-hellman-group14-sha256 in RFC 4253 and RFC 8268,
-	// and Oakley Group 14 in RFC 3526.
-	p, _ = new(big.Int).SetString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
 	group14 := &dhGroup{
 		g:       new(big.Int).SetInt64(2),
 		p:       p,
 		pMinus1: new(big.Int).Sub(p, bigOne),
 	}
 
-	kexAlgoMap[kexAlgoDH14SHA1] = &dhGroup{
+	kexAlgoMap[InsecureKeyExchangeDH14SHA1] = &dhGroup{
 		g: group14.g, p: group14.p, pMinus1: group14.pMinus1,
 		hashFunc: crypto.SHA1,
 	}
-	kexAlgoMap[kexAlgoDH14SHA256] = &dhGroup{
+	kexAlgoMap[KeyExchangeDH14SHA256] = &dhGroup{
 		g: group14.g, p: group14.p, pMinus1: group14.pMinus1,
 		hashFunc: crypto.SHA256,
 	}
 
-	// This is the group called diffie-hellman-group16-sha512 in RFC
+	p, _ = new(big.Int).SetString(oakleyGroup16, 16)
-	// 8268 and Oakley Group 16 in RFC 3526.
-	p, _ = new(big.Int).SetString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
 
-	kexAlgoMap[kexAlgoDH16SHA512] = &dhGroup{
+	kexAlgoMap[KeyExchangeDH16SHA512] = &dhGroup{
 		g:        new(big.Int).SetInt64(2),
 		p:        p,
 		pMinus1:  new(big.Int).Sub(p, bigOne),
 		hashFunc: crypto.SHA512,
 	}
 
-	kexAlgoMap[kexAlgoECDH521] = &ecdh{elliptic.P521()}
+	kexAlgoMap[KeyExchangeCurve25519] = &curve25519sha256{}
-	kexAlgoMap[kexAlgoECDH384] = &ecdh{elliptic.P384()}
+	kexAlgoMap[keyExchangeCurve25519LibSSH] = &curve25519sha256{}
-	kexAlgoMap[kexAlgoECDH256] = &ecdh{elliptic.P256()}
+	kexAlgoMap[InsecureKeyExchangeDHGEXSHA1] = &dhGEXSHA{hashFunc: crypto.SHA1}
-	kexAlgoMap[kexAlgoCurve25519SHA256] = &curve25519sha256{}
+	kexAlgoMap[KeyExchangeDHGEXSHA256] = &dhGEXSHA{hashFunc: crypto.SHA256}
-	kexAlgoMap[kexAlgoCurve25519SHA256LibSSH] = &curve25519sha256{}
-	kexAlgoMap[kexAlgoDHGEXSHA1] = &dhGEXSHA{hashFunc: crypto.SHA1}
-	kexAlgoMap[kexAlgoDHGEXSHA256] = &dhGEXSHA{hashFunc: crypto.SHA256}
 }
 
 // curve25519sha256 implements the curve25519-sha256 (formerly known as
@@ -464,15 +470,17 @@ func (kp *curve25519KeyPair) generate(rand io.Reader) error {
 	if _, err := io.ReadFull(rand, kp.priv[:]); err != nil {
 		return err
 	}
-	curve25519.ScalarBaseMult(&kp.pub, &kp.priv)
+	p, err := curve25519.X25519(kp.priv[:], curve25519.Basepoint)
+	if err != nil {
+		return fmt.Errorf("curve25519: %w", err)
+	}
+	if len(p) != 32 {
+		return fmt.Errorf("curve25519: internal error: X25519 returned %d bytes, expected 32", len(p))
+	}
+	copy(kp.pub[:], p)
 	return nil
 }
 
-// curve25519Zeros is just an array of 32 zero bytes so that we have something
-// convenient to compare against in order to reject curve25519 points with the
-// wrong order.
-var curve25519Zeros [32]byte
-
 func (kex *curve25519sha256) Client(c packetConn, rand io.Reader, magics *handshakeMagics) (*kexResult, error) {
 	var kp curve25519KeyPair
 	if err := kp.generate(rand); err != nil {
@@ -495,11 +503,9 @@ func (kex *curve25519sha256) Client(c packetConn, rand io.Reader, magics *handsh
 		return nil, errors.New("ssh: peer's curve25519 public value has wrong length")
 	}
 
-	var servPub, secret [32]byte
+	secret, err := curve25519.X25519(kp.priv[:], reply.EphemeralPubKey)
-	copy(servPub[:], reply.EphemeralPubKey)
+	if err != nil {
-	curve25519.ScalarMult(&secret, &kp.priv, &servPub)
+		return nil, fmt.Errorf("ssh: peer's curve25519 public value is not valid: %w", err)
-	if subtle.ConstantTimeCompare(secret[:], curve25519Zeros[:]) == 1 {
-		return nil, errors.New("ssh: peer's curve25519 public value has wrong order")
 	}
 
 	h := crypto.SHA256.New()
@@ -541,11 +547,9 @@ func (kex *curve25519sha256) Server(c packetConn, rand io.Reader, magics *handsh
 		return nil, err
 	}
 
-	var clientPub, secret [32]byte
+	secret, err := curve25519.X25519(kp.priv[:], kexInit.ClientPubKey)
-	copy(clientPub[:], kexInit.ClientPubKey)
+	if err != nil {
-	curve25519.ScalarMult(&secret, &kp.priv, &clientPub)
+		return nil, fmt.Errorf("ssh: peer's curve25519 public value is not valid: %w", err)
-	if subtle.ConstantTimeCompare(secret[:], curve25519Zeros[:]) == 1 {
-		return nil, errors.New("ssh: peer's curve25519 public value has wrong order")
 	}
 
 	hostKeyBytes := priv.PublicKey().Marshal()
@@ -602,7 +606,7 @@ func (gex *dhGEXSHA) Client(c packetConn, randSource io.Reader, magics *handshak
 	// Send GexRequest
 	kexDHGexRequest := kexDHGexRequestMsg{
 		MinBits:       dhGroupExchangeMinimumBits,
-		PreferedBits: dhGroupExchangePreferredBits,
+		PreferredBits: dhGroupExchangePreferredBits,
 		MaxBits:       dhGroupExchangeMaximumBits,
 	}
 	if err := c.writePacket(Marshal(&kexDHGexRequest)); err != nil {
@@ -690,9 +694,7 @@ func (gex *dhGEXSHA) Client(c packetConn, randSource io.Reader, magics *handshak
 }
 
 // Server half implementation of the Diffie Hellman Key Exchange with SHA1 and SHA256.
-//
+func (gex *dhGEXSHA) Server(c packetConn, randSource io.Reader, magics *handshakeMagics, priv AlgorithmSigner, algo string) (result *kexResult, err error) {
-// This is a minimal implementation to satisfy the automated tests.
-func (gex dhGEXSHA) Server(c packetConn, randSource io.Reader, magics *handshakeMagics, priv AlgorithmSigner, algo string) (result *kexResult, err error) {
 	// Receive GexRequest
 	packet, err := c.readPacket()
 	if err != nil {
@@ -702,13 +704,32 @@ func (gex dhGEXSHA) Server(c packetConn, randSource io.Reader, magics *handshake
 	if err = Unmarshal(packet, &kexDHGexRequest); err != nil {
 		return
 	}
+	// We check that the request received is valid and that the MaxBits
+	// requested are at least equal to our supported minimum. This is the same
+	// check done in OpenSSH:
+	// https://github.com/openssh/openssh-portable/blob/80a2f64b/kexgexs.c#L94
+	//
+	// Furthermore, we also check that the required MinBits are less than or
+	// equal to 4096 because we can use up to Oakley Group 16.
+	if kexDHGexRequest.MaxBits < kexDHGexRequest.MinBits || kexDHGexRequest.PreferredBits < kexDHGexRequest.MinBits ||
+		kexDHGexRequest.MaxBits < kexDHGexRequest.PreferredBits || kexDHGexRequest.MaxBits < dhGroupExchangeMinimumBits ||
+		kexDHGexRequest.MinBits > 4096 {
+		return nil, fmt.Errorf("ssh: DH GEX request out of range, min: %d, max: %d, preferred: %d", kexDHGexRequest.MinBits,
+			kexDHGexRequest.MaxBits, kexDHGexRequest.PreferredBits)
+	}
+
+	var p *big.Int
+	// We hardcode sending Oakley Group 14 (2048 bits), Oakley Group 15 (3072
+	// bits) or Oakley Group 16 (4096 bits), based on the requested max size.
+	if kexDHGexRequest.MaxBits < 3072 {
+		p, _ = new(big.Int).SetString(oakleyGroup14, 16)
+	} else if kexDHGexRequest.MaxBits < 4096 {
+		p, _ = new(big.Int).SetString(oakleyGroup15, 16)
+	} else {
+		p, _ = new(big.Int).SetString(oakleyGroup16, 16)
+	}
 
-	// Send GexGroup
-	// This is the group called diffie-hellman-group14-sha1 in RFC
-	// 4253 and Oakley Group 14 in RFC 3526.
-	p, _ := new(big.Int).SetString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
 	g := big.NewInt(2)
-
 	msg := &kexDHGexGroupMsg{
 		P: p,
 		G: g,
@@ -746,9 +767,9 @@ func (gex dhGEXSHA) Server(c packetConn, randSource io.Reader, magics *handshake
 	h := gex.hashFunc.New()
 	magics.write(h)
 	writeString(h, hostKeyBytes)
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangeMinimumBits))
+	binary.Write(h, binary.BigEndian, kexDHGexRequest.MinBits)
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangePreferredBits))
+	binary.Write(h, binary.BigEndian, kexDHGexRequest.PreferredBits)
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangeMaximumBits))
+	binary.Write(h, binary.BigEndian, kexDHGexRequest.MaxBits)
 	writeInt(h, p)
 	writeInt(h, g)
 	writeInt(h, kexDHGexInit.X)

vendor/golang.org/x/crypto/ssh/keys.go

@@ -27,6 +27,7 @@ import (
 	"fmt"
 	"io"
 	"math/big"
+	"slices"
 	"strings"
 
 	"golang.org/x/crypto/ssh/internal/bcrypt_pbkdf"
@@ -37,7 +38,12 @@ import (
 // arguments.
 const (
 	KeyAlgoRSA = "ssh-rsa"
-	KeyAlgoDSA        = "ssh-dss"
+	// Deprecated: DSA is only supported at insecure key sizes, and was removed
+	// from major implementations.
+	KeyAlgoDSA = InsecureKeyAlgoDSA
+	// Deprecated: DSA is only supported at insecure key sizes, and was removed
+	// from major implementations.
+	InsecureKeyAlgoDSA = "ssh-dss"
 	KeyAlgoECDSA256    = "ecdsa-sha2-nistp256"
 	KeyAlgoSKECDSA256  = "sk-ecdsa-sha2-nistp256@openssh.com"
 	KeyAlgoECDSA384    = "ecdsa-sha2-nistp384"
@@ -67,7 +73,7 @@ func parsePubKey(in []byte, algo string) (pubKey PublicKey, rest []byte, err err
 	switch algo {
 	case KeyAlgoRSA:
 		return parseRSA(in)
-	case KeyAlgoDSA:
+	case InsecureKeyAlgoDSA:
 		return parseDSA(in)
 	case KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521:
 		return parseECDSA(in)
@@ -77,13 +83,18 @@ func parsePubKey(in []byte, algo string) (pubKey PublicKey, rest []byte, err err
 		return parseED25519(in)
 	case KeyAlgoSKED25519:
 		return parseSKEd25519(in)
-	case CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoSKECDSA256v01, CertAlgoED25519v01, CertAlgoSKED25519v01:
+	case CertAlgoRSAv01, InsecureCertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoSKECDSA256v01, CertAlgoED25519v01, CertAlgoSKED25519v01:
 		cert, err := parseCert(in, certKeyAlgoNames[algo])
 		if err != nil {
 			return nil, nil, err
 		}
 		return cert, nil, nil
 	}
+	if keyFormat := keyFormatForAlgorithm(algo); keyFormat != "" {
+		return nil, nil, fmt.Errorf("ssh: signature algorithm %q isn't a key format; key is malformed and should be re-encoded with type %q",
+			algo, keyFormat)
+	}
+
 	return nil, nil, fmt.Errorf("ssh: unknown key algorithm: %v", algo)
 }
 
@@ -186,9 +197,10 @@ func ParseKnownHosts(in []byte) (marker string, hosts []string, pubKey PublicKey
 	return "", nil, nil, "", nil, io.EOF
 }
 
-// ParseAuthorizedKey parses a public key from an authorized_keys
+// ParseAuthorizedKey parses a public key from an authorized_keys file used in
-// file used in OpenSSH according to the sshd(8) manual page.
+// OpenSSH according to the sshd(8) manual page. Invalid lines are ignored.
 func ParseAuthorizedKey(in []byte) (out PublicKey, comment string, options []string, rest []byte, err error) {
+	var lastErr error
 	for len(in) > 0 {
 		end := bytes.IndexByte(in, '\n')
 		if end != -1 {
@@ -217,6 +229,8 @@ func ParseAuthorizedKey(in []byte) (out PublicKey, comment string, options []str
 
 		if out, comment, err = parseAuthorizedKey(in[i:]); err == nil {
 			return out, comment, options, rest, nil
+		} else {
+			lastErr = err
 		}
 
 		// No key type recognised. Maybe there's an options field at
@@ -259,16 +273,22 @@ func ParseAuthorizedKey(in []byte) (out PublicKey, comment string, options []str
 		if out, comment, err = parseAuthorizedKey(in[i:]); err == nil {
 			options = candidateOptions
 			return out, comment, options, rest, nil
+		} else {
+			lastErr = err
 		}
 
 		in = rest
 		continue
 	}
 
+	if lastErr != nil {
+		return nil, "", nil, nil, fmt.Errorf("ssh: no key found; last parsing error for ignored line: %w", lastErr)
+	}
+
 	return nil, "", nil, nil, errors.New("ssh: no key found")
 }
 
-// ParsePublicKey parses an SSH public key formatted for use in
+// ParsePublicKey parses an SSH public key or certificate formatted for use in
 // the SSH wire protocol according to RFC 4253, section 6.6.
 func ParsePublicKey(in []byte) (out PublicKey, err error) {
 	algo, in, ok := parseString(in)
@@ -390,11 +410,11 @@ func NewSignerWithAlgorithms(signer AlgorithmSigner, algorithms []string) (Multi
 	}
 
 	for _, algo := range algorithms {
-		if !contains(supportedAlgos, algo) {
+		if !slices.Contains(supportedAlgos, algo) {
 			return nil, fmt.Errorf("ssh: algorithm %q is not supported for key type %q",
 				algo, signer.PublicKey().Type())
 		}
-		if !contains(signerAlgos, algo) {
+		if !slices.Contains(signerAlgos, algo) {
 			return nil, fmt.Errorf("ssh: algorithm %q is restricted for the provided signer", algo)
 		}
 	}
@@ -481,10 +501,13 @@ func (r *rsaPublicKey) Marshal() []byte {
 
 func (r *rsaPublicKey) Verify(data []byte, sig *Signature) error {
 	supportedAlgos := algorithmsForKeyFormat(r.Type())
-	if !contains(supportedAlgos, sig.Format) {
+	if !slices.Contains(supportedAlgos, sig.Format) {
 		return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, r.Type())
 	}
-	hash := hashFuncs[sig.Format]
+	hash, err := hashFunc(sig.Format)
+	if err != nil {
+		return err
+	}
 	h := hash.New()
 	h.Write(data)
 	digest := h.Sum(nil)
@@ -601,7 +624,11 @@ func (k *dsaPublicKey) Verify(data []byte, sig *Signature) error {
 	if sig.Format != k.Type() {
 		return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, k.Type())
 	}
-	h := hashFuncs[sig.Format].New()
+	hash, err := hashFunc(sig.Format)
+	if err != nil {
+		return err
+	}
+	h := hash.New()
 	h.Write(data)
 	digest := h.Sum(nil)
 
@@ -646,7 +673,11 @@ func (k *dsaPrivateKey) SignWithAlgorithm(rand io.Reader, data []byte, algorithm
 		return nil, fmt.Errorf("ssh: unsupported signature algorithm %s", algorithm)
 	}
 
-	h := hashFuncs[k.PublicKey().Type()].New()
+	hash, err := hashFunc(k.PublicKey().Type())
+	if err != nil {
+		return nil, err
+	}
+	h := hash.New()
 	h.Write(data)
 	digest := h.Sum(nil)
 	r, s, err := dsa.Sign(rand, k.PrivateKey, digest)
@@ -796,8 +827,11 @@ func (k *ecdsaPublicKey) Verify(data []byte, sig *Signature) error {
 	if sig.Format != k.Type() {
 		return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, k.Type())
 	}
-
+	hash, err := hashFunc(sig.Format)
-	h := hashFuncs[sig.Format].New()
+	if err != nil {
+		return err
+	}
+	h := hash.New()
 	h.Write(data)
 	digest := h.Sum(nil)
 
@@ -900,8 +934,11 @@ func (k *skECDSAPublicKey) Verify(data []byte, sig *Signature) error {
 	if sig.Format != k.Type() {
 		return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, k.Type())
 	}
-
+	hash, err := hashFunc(sig.Format)
-	h := hashFuncs[sig.Format].New()
+	if err != nil {
+		return err
+	}
+	h := hash.New()
 	h.Write([]byte(k.application))
 	appDigest := h.Sum(nil)
 
@@ -1004,7 +1041,11 @@ func (k *skEd25519PublicKey) Verify(data []byte, sig *Signature) error {
 		return fmt.Errorf("invalid size %d for Ed25519 public key", l)
 	}
 
-	h := hashFuncs[sig.Format].New()
+	hash, err := hashFunc(sig.Format)
+	if err != nil {
+		return err
+	}
+	h := hash.New()
 	h.Write([]byte(k.application))
 	appDigest := h.Sum(nil)
 
@@ -1107,11 +1148,14 @@ func (s *wrappedSigner) SignWithAlgorithm(rand io.Reader, data []byte, algorithm
 		algorithm = s.pubKey.Type()
 	}
 
-	if !contains(s.Algorithms(), algorithm) {
+	if !slices.Contains(s.Algorithms(), algorithm) {
 		return nil, fmt.Errorf("ssh: unsupported signature algorithm %q for key format %q", algorithm, s.pubKey.Type())
 	}
 
-	hashFunc := hashFuncs[algorithm]
+	hashFunc, err := hashFunc(algorithm)
+	if err != nil {
+		return nil, err
+	}
 	var digest []byte
 	if hashFunc != 0 {
 		h := hashFunc.New()
@@ -1446,6 +1490,7 @@ type openSSHEncryptedPrivateKey struct {
 	NumKeys      uint32
 	PubKey       []byte
 	PrivKeyBlock []byte
+	Rest         []byte `ssh:"rest"`
 }
 
 type openSSHPrivateKey struct {

vendor/golang.org/x/crypto/ssh/mac.go

@@ -7,11 +7,13 @@ package ssh
 // Message authentication support
 
 import (
+	"crypto/fips140"
 	"crypto/hmac"
 	"crypto/sha1"
 	"crypto/sha256"
 	"crypto/sha512"
 	"hash"
+	"slices"
 )
 
 type macMode struct {
@@ -46,23 +48,37 @@ func (t truncatingMAC) Size() int {
 
 func (t truncatingMAC) BlockSize() int { return t.hmac.BlockSize() }
 
-var macModes = map[string]*macMode{
+// macModes defines the supported MACs. MACs not included are not supported
-	"hmac-sha2-512-etm@openssh.com": {64, true, func(key []byte) hash.Hash {
+// and will not be negotiated, even if explicitly configured. When FIPS mode is
+// enabled, only FIPS-approved algorithms are included.
+var macModes = map[string]*macMode{}
+
+func init() {
+	macModes[HMACSHA512ETM] = &macMode{64, true, func(key []byte) hash.Hash {
 		return hmac.New(sha512.New, key)
-	}},
+	}}
-	"hmac-sha2-256-etm@openssh.com": {32, true, func(key []byte) hash.Hash {
+	macModes[HMACSHA256ETM] = &macMode{32, true, func(key []byte) hash.Hash {
 		return hmac.New(sha256.New, key)
-	}},
+	}}
-	"hmac-sha2-512": {64, false, func(key []byte) hash.Hash {
+	macModes[HMACSHA512] = &macMode{64, false, func(key []byte) hash.Hash {
 		return hmac.New(sha512.New, key)
-	}},
+	}}
-	"hmac-sha2-256": {32, false, func(key []byte) hash.Hash {
+	macModes[HMACSHA256] = &macMode{32, false, func(key []byte) hash.Hash {
 		return hmac.New(sha256.New, key)
-	}},
+	}}
-	"hmac-sha1": {20, false, func(key []byte) hash.Hash {
+
+	if fips140.Enabled() {
+		defaultMACs = slices.DeleteFunc(defaultMACs, func(algo string) bool {
+			_, ok := macModes[algo]
+			return !ok
+		})
+		return
+	}
+
+	macModes[HMACSHA1] = &macMode{20, false, func(key []byte) hash.Hash {
 		return hmac.New(sha1.New, key)
-	}},
+	}}
-	"hmac-sha1-96": {20, false, func(key []byte) hash.Hash {
+	macModes[InsecureHMACSHA196] = &macMode{20, false, func(key []byte) hash.Hash {
 		return truncatingMAC{12, hmac.New(sha1.New, key)}
-	}},
+	}}
 }

vendor/golang.org/x/crypto/ssh/messages.go

@@ -123,7 +123,7 @@ const msgKexDHGexRequest = 34
 
 type kexDHGexRequestMsg struct {
 	MinBits       uint32 `sshtype:"34"`
-	PreferedBits uint32
+	PreferredBits uint32
 	MaxBits       uint32
 }
 
@@ -792,7 +792,7 @@ func marshalString(to []byte, s []byte) []byte {
 	return to[len(s):]
 }
 
-var bigIntType = reflect.TypeOf((*big.Int)(nil))
+var bigIntType = reflect.TypeFor[*big.Int]()
 
 // Decode a packet into its corresponding message.
 func decode(packet []byte) (interface{}, error) {

vendor/golang.org/x/crypto/ssh/mlkem.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.24
-
 package ssh
 
 import (
@@ -13,27 +11,10 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"runtime"
-	"slices"
 
 	"golang.org/x/crypto/curve25519"
 )
 
-const (
-	kexAlgoMLKEM768xCurve25519SHA256 = "mlkem768x25519-sha256"
-)
-
-func init() {
-	// After Go 1.24rc1 mlkem swapped the order of return values of Encapsulate.
-	// See #70950.
-	if runtime.Version() == "go1.24rc1" {
-		return
-	}
-	supportedKexAlgos = slices.Insert(supportedKexAlgos, 0, kexAlgoMLKEM768xCurve25519SHA256)
-	preferredKexAlgos = slices.Insert(preferredKexAlgos, 0, kexAlgoMLKEM768xCurve25519SHA256)
-	kexAlgoMap[kexAlgoMLKEM768xCurve25519SHA256] = &mlkem768WithCurve25519sha256{}
-}
-
 // mlkem768WithCurve25519sha256 implements the hybrid ML-KEM768 with
 // curve25519-sha256 key exchange method, as described by
 // draft-kampanakis-curdle-ssh-pq-ke-05 section 2.3.3.

vendor/golang.org/x/crypto/ssh/server.go

@@ -10,6 +10,7 @@ import (
 	"fmt"
 	"io"
 	"net"
+	"slices"
 	"strings"
 )
 
@@ -43,6 +44,9 @@ type Permissions struct {
 	// pass data from the authentication callbacks to the server
 	// application layer.
 	Extensions map[string]string
+
+	// ExtraData allows to store user defined data.
+	ExtraData map[any]any
 }
 
 type GSSAPIWithMICConfig struct {
@@ -126,6 +130,21 @@ type ServerConfig struct {
 	// Permissions.Extensions entry.
 	PublicKeyCallback func(conn ConnMetadata, key PublicKey) (*Permissions, error)
 
+	// VerifiedPublicKeyCallback, if non-nil, is called after a client
+	// successfully confirms having control over a key that was previously
+	// approved by PublicKeyCallback. The permissions object passed to the
+	// callback is the one returned by PublicKeyCallback for the given public
+	// key and its ownership is transferred to the callback. The returned
+	// Permissions object can be the same object, optionally modified, or a
+	// completely new object. If VerifiedPublicKeyCallback is non-nil,
+	// PublicKeyCallback is not allowed to return a PartialSuccessError, which
+	// can instead be returned by VerifiedPublicKeyCallback.
+	//
+	// VerifiedPublicKeyCallback does not affect which authentication methods
+	// are included in the list of methods that can be attempted by the client.
+	VerifiedPublicKeyCallback func(conn ConnMetadata, key PublicKey, permissions *Permissions,
+		signatureAlgorithm string) (*Permissions, error)
+
 	// KeyboardInteractiveCallback, if non-nil, is called when
 	// keyboard-interactive authentication is selected (RFC
 	// 4256). The client object's Challenge function should be
@@ -243,22 +262,15 @@ func NewServerConn(c net.Conn, config *ServerConfig) (*ServerConn, <-chan NewCha
 		fullConf.MaxAuthTries = 6
 	}
 	if len(fullConf.PublicKeyAuthAlgorithms) == 0 {
-		fullConf.PublicKeyAuthAlgorithms = supportedPubKeyAuthAlgos
+		fullConf.PublicKeyAuthAlgorithms = defaultPubKeyAuthAlgos
 	} else {
 		for _, algo := range fullConf.PublicKeyAuthAlgorithms {
-			if !contains(supportedPubKeyAuthAlgos, algo) {
+			if !slices.Contains(SupportedAlgorithms().PublicKeyAuths, algo) && !slices.Contains(InsecureAlgorithms().PublicKeyAuths, algo) {
 				c.Close()
 				return nil, nil, nil, fmt.Errorf("ssh: unsupported public key authentication algorithm %s", algo)
 			}
 		}
 	}
-	// Check if the config contains any unsupported key exchanges
-	for _, kex := range fullConf.KeyExchanges {
-		if _, ok := serverForbiddenKexAlgos[kex]; ok {
-			c.Close()
-			return nil, nil, nil, fmt.Errorf("ssh: unsupported key exchange %s for server", kex)
-		}
-	}
 
 	s := &connection{
 		sshConn: sshConn{conn: c},
@@ -315,6 +327,7 @@ func (s *connection) serverHandshake(config *ServerConfig) (*Permissions, error)
 
 	// We just did the key change, so the session ID is established.
 	s.sessionID = s.transport.getSessionID()
+	s.algorithms = s.transport.getAlgorithms()
 
 	var packet []byte
 	if packet, err = s.transport.readPacket(); err != nil {
@@ -637,7 +650,7 @@ userAuthLoop:
 				return nil, parseError(msgUserAuthRequest)
 			}
 			algo := string(algoBytes)
-			if !contains(config.PublicKeyAuthAlgorithms, underlyingAlgo(algo)) {
+			if !slices.Contains(config.PublicKeyAuthAlgorithms, underlyingAlgo(algo)) {
 				authErr = fmt.Errorf("ssh: algorithm %q not accepted", algo)
 				break
 			}
@@ -658,6 +671,9 @@ userAuthLoop:
 				candidate.pubKeyData = pubKeyData
 				candidate.perms, candidate.result = authConfig.PublicKeyCallback(s, pubKey)
 				_, isPartialSuccessError := candidate.result.(*PartialSuccessError)
+				if isPartialSuccessError && config.VerifiedPublicKeyCallback != nil {
+					return nil, errors.New("ssh: invalid library usage: PublicKeyCallback must not return partial success when VerifiedPublicKeyCallback is defined")
+				}
 
 				if (candidate.result == nil || isPartialSuccessError) &&
 					candidate.perms != nil &&
@@ -701,7 +717,7 @@ userAuthLoop:
 				// ssh-rsa-cert-v01@openssh.com algorithm with ssh-rsa public
 				// key type. The algorithm and public key type must be
 				// consistent: both must be certificate algorithms, or neither.
-				if !contains(algorithmsForKeyFormat(pubKey.Type()), algo) {
+				if !slices.Contains(algorithmsForKeyFormat(pubKey.Type()), algo) {
 					authErr = fmt.Errorf("ssh: public key type %q not compatible with selected algorithm %q",
 						pubKey.Type(), algo)
 					break
@@ -711,7 +727,7 @@ userAuthLoop:
 				// algorithm name that corresponds to algo with
 				// sig.Format.  This is usually the same, but
 				// for certs, the names differ.
-				if !contains(config.PublicKeyAuthAlgorithms, sig.Format) {
+				if !slices.Contains(config.PublicKeyAuthAlgorithms, sig.Format) {
 					authErr = fmt.Errorf("ssh: algorithm %q not accepted", sig.Format)
 					break
 				}
@@ -728,6 +744,12 @@ userAuthLoop:
 
 				authErr = candidate.result
 				perms = candidate.perms
+				if authErr == nil && config.VerifiedPublicKeyCallback != nil {
+					// Only call VerifiedPublicKeyCallback after the key has been accepted
+					// and successfully verified. If authErr is non-nil, the key is not
+					// considered verified and the callback must not run.
+					perms, authErr = config.VerifiedPublicKeyCallback(s, pubKey, perms, algo)
+				}
 			}
 		case "gssapi-with-mic":
 			if authConfig.GSSAPIWithMICConfig == nil {

vendor/golang.org/x/crypto/ssh/ssh_gss.go

@@ -106,6 +106,13 @@ func parseGSSAPIPayload(payload []byte) (*userAuthRequestGSSAPI, error) {
 	if !ok {
 		return nil, errors.New("parse uint32 failed")
 	}
+	// Each ASN.1 encoded OID must have a minimum
+	// of 2 bytes; 64 maximum mechanisms is an
+	// arbitrary, but reasonable ceiling.
+	const maxMechs = 64
+	if n > maxMechs || int(n)*2 > len(rest) {
+		return nil, errors.New("invalid mechanism count")
+	}
 	s := &userAuthRequestGSSAPI{
 		N:    n,
 		OIDS: make([]asn1.ObjectIdentifier, n),
@@ -122,7 +129,6 @@ func parseGSSAPIPayload(payload []byte) (*userAuthRequestGSSAPI, error) {
 		if rest, err = asn1.Unmarshal(desiredMech, &s.OIDS[i]); err != nil {
 			return nil, err
 		}
-
 	}
 	return s, nil
 }

vendor/golang.org/x/crypto/ssh/streamlocal.go

@@ -44,7 +44,7 @@ func (c *Client) ListenUnix(socketPath string) (net.Listener, error) {
 	if !ok {
 		return nil, errors.New("ssh: streamlocal-forward@openssh.com request denied by peer")
 	}
-	ch := c.forwards.add(&net.UnixAddr{Name: socketPath, Net: "unix"})
+	ch := c.forwards.add("unix", socketPath)
 
 	return &unixListener{socketPath, c, ch}, nil
 }
@@ -96,7 +96,7 @@ func (l *unixListener) Accept() (net.Conn, error) {
 // Close closes the listener.
 func (l *unixListener) Close() error {
 	// this also closes the listener.
-	l.conn.forwards.remove(&net.UnixAddr{Name: l.socketPath, Net: "unix"})
+	l.conn.forwards.remove("unix", l.socketPath)
 	m := streamLocalChannelForwardMsg{
 		l.socketPath,
 	}

vendor/golang.org/x/crypto/ssh/tcpip.go

@@ -11,6 +11,7 @@ import (
 	"io"
 	"math/rand"
 	"net"
+	"net/netip"
 	"strconv"
 	"strings"
 	"sync"
@@ -22,14 +23,21 @@ import (
 // the returned net.Listener. The listener must be serviced, or the
 // SSH connection may hang.
 // N must be "tcp", "tcp4", "tcp6", or "unix".
+//
+// If the address is a hostname, it is sent to the remote peer as-is, without
+// being resolved locally, and the Listener Addr method will return a zero IP.
 func (c *Client) Listen(n, addr string) (net.Listener, error) {
 	switch n {
 	case "tcp", "tcp4", "tcp6":
-		laddr, err := net.ResolveTCPAddr(n, addr)
+		host, portStr, err := net.SplitHostPort(addr)
 		if err != nil {
 			return nil, err
 		}
-		return c.ListenTCP(laddr)
+		port, err := strconv.ParseInt(portStr, 10, 32)
+		if err != nil {
+			return nil, err
+		}
+		return c.listenTCPInternal(host, int(port))
 	case "unix":
 		return c.ListenUnix(addr)
 	default:
@@ -102,15 +110,24 @@ func (c *Client) handleForwards() {
 // ListenTCP requests the remote peer open a listening socket
 // on laddr. Incoming connections will be available by calling
 // Accept on the returned net.Listener.
+//
+// ListenTCP accepts an IP address, to provide a hostname use [Client.Listen]
+// with "tcp", "tcp4", or "tcp6" network instead.
 func (c *Client) ListenTCP(laddr *net.TCPAddr) (net.Listener, error) {
 	c.handleForwardsOnce.Do(c.handleForwards)
 	if laddr.Port == 0 && isBrokenOpenSSHVersion(string(c.ServerVersion())) {
 		return c.autoPortListenWorkaround(laddr)
 	}
 
+	return c.listenTCPInternal(laddr.IP.String(), laddr.Port)
+}
+
+func (c *Client) listenTCPInternal(host string, port int) (net.Listener, error) {
+	c.handleForwardsOnce.Do(c.handleForwards)
+
 	m := channelForwardMsg{
-		laddr.IP.String(),
+		host,
-		uint32(laddr.Port),
+		uint32(port),
 	}
 	// send message
 	ok, resp, err := c.SendRequest("tcpip-forward", true, Marshal(&m))
@@ -123,20 +140,33 @@ func (c *Client) ListenTCP(laddr *net.TCPAddr) (net.Listener, error) {
 
 	// If the original port was 0, then the remote side will
 	// supply a real port number in the response.
-	if laddr.Port == 0 {
+	if port == 0 {
 		var p struct {
 			Port uint32
 		}
 		if err := Unmarshal(resp, &p); err != nil {
 			return nil, err
 		}
-		laddr.Port = int(p.Port)
+		port = int(p.Port)
 	}
+	// Construct a local address placeholder for the remote listener. If the
+	// original host is an IP address, preserve it so that Listener.Addr()
+	// reports the same IP. If the host is a hostname or cannot be parsed as an
+	// IP, fall back to IPv4zero. The port field is always set, even if the
+	// original port was 0, because in that case the remote server will assign
+	// one, allowing callers to determine which port was selected.
+	ip := net.IPv4zero
+	if parsed, err := netip.ParseAddr(host); err == nil {
+		ip = net.IP(parsed.AsSlice())
+	}
+	laddr := &net.TCPAddr{
+		IP:   ip,
+		Port: port,
+	}
+	addr := net.JoinHostPort(host, strconv.FormatInt(int64(port), 10))
+	ch := c.forwards.add("tcp", addr)
 
-	// Register this forward, using the port number we obtained.
+	return &tcpListener{laddr, addr, c, ch}, nil
-	ch := c.forwards.add(laddr)
-
-	return &tcpListener{laddr, c, ch}, nil
 }
 
 // forwardList stores a mapping between remote
@@ -149,7 +179,8 @@ type forwardList struct {
 // forwardEntry represents an established mapping of a laddr on a
 // remote ssh server to a channel connected to a tcpListener.
 type forwardEntry struct {
-	laddr net.Addr
+	addr    string // host:port or socket path
+	network string // tcp or unix
 	c       chan forward
 }
 
@@ -161,11 +192,12 @@ type forward struct {
 	raddr net.Addr   // the raddr of the incoming connection
 }
 
-func (l *forwardList) add(addr net.Addr) chan forward {
+func (l *forwardList) add(n, addr string) chan forward {
 	l.Lock()
 	defer l.Unlock()
 	f := forwardEntry{
-		laddr: addr,
+		addr:    addr,
+		network: n,
 		c:       make(chan forward, 1),
 	}
 	l.entries = append(l.entries, f)
@@ -185,17 +217,18 @@ func parseTCPAddr(addr string, port uint32) (*net.TCPAddr, error) {
 	if port == 0 || port > 65535 {
 		return nil, fmt.Errorf("ssh: port number out of range: %d", port)
 	}
-	ip := net.ParseIP(string(addr))
+	ip, err := netip.ParseAddr(addr)
-	if ip == nil {
+	if err != nil {
 		return nil, fmt.Errorf("ssh: cannot parse IP address %q", addr)
 	}
-	return &net.TCPAddr{IP: ip, Port: int(port)}, nil
+	return &net.TCPAddr{IP: net.IP(ip.AsSlice()), Port: int(port)}, nil
 }
 
 func (l *forwardList) handleChannels(in <-chan NewChannel) {
 	for ch := range in {
 		var (
-			laddr net.Addr
+			addr    string
+			network string
 			raddr   net.Addr
 			err     error
 		)
@@ -207,40 +240,34 @@ func (l *forwardList) handleChannels(in <-chan NewChannel) {
 				continue
 			}
 
-			// RFC 4254 section 7.2 specifies that incoming
+			// RFC 4254 section 7.2 specifies that incoming addresses should
-			// addresses should list the address, in string
+			// list the address that was connected, in string format. It is the
-			// format. It is implied that this should be an IP
+			// same address used in the tcpip-forward request. The originator
-			// address, as it would be impossible to connect to it
+			// address is an IP address instead.
-			// otherwise.
+			addr = net.JoinHostPort(payload.Addr, strconv.FormatUint(uint64(payload.Port), 10))
-			laddr, err = parseTCPAddr(payload.Addr, payload.Port)
+
-			if err != nil {
-				ch.Reject(ConnectionFailed, err.Error())
-				continue
-			}
 			raddr, err = parseTCPAddr(payload.OriginAddr, payload.OriginPort)
 			if err != nil {
 				ch.Reject(ConnectionFailed, err.Error())
 				continue
 			}
-
+			network = "tcp"
 		case "forwarded-streamlocal@openssh.com":
 			var payload forwardedStreamLocalPayload
 			if err = Unmarshal(ch.ExtraData(), &payload); err != nil {
 				ch.Reject(ConnectionFailed, "could not parse forwarded-streamlocal@openssh.com payload: "+err.Error())
 				continue
 			}
-			laddr = &net.UnixAddr{
+			addr = payload.SocketPath
-				Name: payload.SocketPath,
-				Net:  "unix",
-			}
 			raddr = &net.UnixAddr{
 				Name: "@",
 				Net:  "unix",
 			}
+			network = "unix"
 		default:
 			panic(fmt.Errorf("ssh: unknown channel type %s", channelType))
 		}
-		if ok := l.forward(laddr, raddr, ch); !ok {
+		if ok := l.forward(network, addr, raddr, ch); !ok {
 			// Section 7.2, implementations MUST reject spurious incoming
 			// connections.
 			ch.Reject(Prohibited, "no forward for address")
@@ -252,11 +279,11 @@ func (l *forwardList) handleChannels(in <-chan NewChannel) {
 
 // remove removes the forward entry, and the channel feeding its
 // listener.
-func (l *forwardList) remove(addr net.Addr) {
+func (l *forwardList) remove(n, addr string) {
 	l.Lock()
 	defer l.Unlock()
 	for i, f := range l.entries {
-		if addr.Network() == f.laddr.Network() && addr.String() == f.laddr.String() {
+		if n == f.network && addr == f.addr {
 			l.entries = append(l.entries[:i], l.entries[i+1:]...)
 			close(f.c)
 			return
@@ -274,11 +301,11 @@ func (l *forwardList) closeAll() {
 	l.entries = nil
 }
 
-func (l *forwardList) forward(laddr, raddr net.Addr, ch NewChannel) bool {
+func (l *forwardList) forward(n, addr string, raddr net.Addr, ch NewChannel) bool {
 	l.Lock()
 	defer l.Unlock()
 	for _, f := range l.entries {
-		if laddr.Network() == f.laddr.Network() && laddr.String() == f.laddr.String() {
+		if n == f.network && addr == f.addr {
 			f.c <- forward{newCh: ch, raddr: raddr}
 			return true
 		}
@@ -288,6 +315,7 @@ func (l *forwardList) forward(laddr, raddr net.Addr, ch NewChannel) bool {
 
 type tcpListener struct {
 	laddr *net.TCPAddr
+	addr  string
 
 	conn *Client
 	in   <-chan forward
@@ -314,13 +342,21 @@ func (l *tcpListener) Accept() (net.Conn, error) {
 
 // Close closes the listener.
 func (l *tcpListener) Close() error {
+	host, port, err := net.SplitHostPort(l.addr)
+	if err != nil {
+		return err
+	}
+	rport, err := strconv.ParseUint(port, 10, 32)
+	if err != nil {
+		return err
+	}
 	m := channelForwardMsg{
-		l.laddr.IP.String(),
+		host,
-		uint32(l.laddr.Port),
+		uint32(rport),
 	}
 
 	// this also closes the listener.
-	l.conn.forwards.remove(l.laddr)
+	l.conn.forwards.remove("tcp", l.addr)
 	ok, _, err := l.conn.SendRequest("cancel-tcpip-forward", true, Marshal(&m))
 	if err == nil && !ok {
 		err = errors.New("ssh: cancel-tcpip-forward failed")

vendor/golang.org/x/crypto/ssh/transport.go

@@ -8,6 +8,7 @@ import (
 	"bufio"
 	"bytes"
 	"errors"
+	"fmt"
 	"io"
 	"log"
 )
@@ -16,13 +17,6 @@ import (
 // wire. No message decoding is done, to minimize the impact on timing.
 const debugTransport = false
 
-const (
-	gcm128CipherID = "aes128-gcm@openssh.com"
-	gcm256CipherID = "aes256-gcm@openssh.com"
-	aes128cbcID    = "aes128-cbc"
-	tripledescbcID = "3des-cbc"
-)
-
 // packetConn represents a transport that implements packet based
 // operations.
 type packetConn interface {
@@ -92,14 +86,14 @@ func (t *transport) setInitialKEXDone() {
 // prepareKeyChange sets up key material for a keychange. The key changes in
 // both directions are triggered by reading and writing a msgNewKey packet
 // respectively.
-func (t *transport) prepareKeyChange(algs *algorithms, kexResult *kexResult) error {
+func (t *transport) prepareKeyChange(algs *NegotiatedAlgorithms, kexResult *kexResult) error {
-	ciph, err := newPacketCipher(t.reader.dir, algs.r, kexResult)
+	ciph, err := newPacketCipher(t.reader.dir, algs.Read, kexResult)
 	if err != nil {
 		return err
 	}
 	t.reader.pendingKeyChange <- ciph
 
-	ciph, err = newPacketCipher(t.writer.dir, algs.w, kexResult)
+	ciph, err = newPacketCipher(t.writer.dir, algs.Write, kexResult)
 	if err != nil {
 		return err
 	}
@@ -259,8 +253,11 @@ var (
 // setupKeys sets the cipher and MAC keys from kex.K, kex.H and sessionId, as
 // described in RFC 4253, section 6.4. direction should either be serverKeys
 // (to setup server->client keys) or clientKeys (for client->server keys).
-func newPacketCipher(d direction, algs directionAlgorithms, kex *kexResult) (packetCipher, error) {
+func newPacketCipher(d direction, algs DirectionAlgorithms, kex *kexResult) (packetCipher, error) {
 	cipherMode := cipherModes[algs.Cipher]
+	if cipherMode == nil {
+		return nil, fmt.Errorf("ssh: unsupported cipher %v", algs.Cipher)
+	}
 
 	iv := make([]byte, cipherMode.ivSize)
 	key := make([]byte, cipherMode.keySize)

vendor/golang.org/x/mod/modfile/print.go

@@ -33,7 +33,7 @@ type printer struct {
 }
 
 // printf prints to the buffer.
-func (p *printer) printf(format string, args ...interface{}) {
+func (p *printer) printf(format string, args ...any) {
 	fmt.Fprintf(p, format, args...)
 }
 

vendor/golang.org/x/mod/modfile/read.go

@@ -94,7 +94,7 @@ func (x *FileSyntax) Span() (start, end Position) {
 // line, the new line is added at the end of the block containing hint,
 // extracting hint into a new block if it is not yet in one.
 //
-// If the hint is non-nil buts its first token does not match,
+// If the hint is non-nil but its first token does not match,
 // the new line is added after the block containing hint
 // (or hint itself, if not in a block).
 //
@@ -600,7 +600,7 @@ func (in *input) readToken() {
 
 	// Checked all punctuation. Must be identifier token.
 	if c := in.peekRune(); !isIdent(c) {
-		in.Error(fmt.Sprintf("unexpected input character %#q", c))
+		in.Error(fmt.Sprintf("unexpected input character %#q", rune(c)))
 	}
 
 	// Scan over identifier.

vendor/golang.org/x/mod/modfile/rule.go

@@ -20,10 +20,11 @@
 package modfile
 
 import (
+	"cmp"
 	"errors"
 	"fmt"
 	"path/filepath"
-	"sort"
+	"slices"
 	"strconv"
 	"strings"
 	"unicode"
@@ -44,6 +45,7 @@ type File struct {
 	Replace   []*Replace
 	Retract   []*Retract
 	Tool      []*Tool
+	Ignore    []*Ignore
 
 	Syntax *FileSyntax
 }
@@ -100,6 +102,12 @@ type Tool struct {
 	Syntax *Line
 }
 
+// An Ignore is a single ignore statement.
+type Ignore struct {
+	Path   string
+	Syntax *Line
+}
+
 // A VersionInterval represents a range of versions with upper and lower bounds.
 // Intervals are closed: both bounds are included. When Low is equal to High,
 // the interval may refer to a single version ('v1.2.3') or an interval
@@ -304,7 +312,7 @@ func parseToFile(file string, data []byte, fix VersionFixer, strict bool) (parse
 					})
 				}
 				continue
-			case "module", "godebug", "require", "exclude", "replace", "retract", "tool":
+			case "module", "godebug", "require", "exclude", "replace", "retract", "tool", "ignore":
 				for _, l := range x.Line {
 					f.add(&errs, x, l, x.Token[0], l.Token, fix, strict)
 				}
@@ -337,7 +345,7 @@ func (f *File) add(errs *ErrorList, block *LineBlock, line *Line, verb string, a
 	// and simply ignore those statements.
 	if !strict {
 		switch verb {
-		case "go", "module", "retract", "require":
+		case "go", "module", "retract", "require", "ignore":
 			// want these even for dependency go.mods
 		default:
 			return
@@ -360,7 +368,7 @@ func (f *File) add(errs *ErrorList, block *LineBlock, line *Line, verb string, a
 			Err:      err,
 		})
 	}
-	errorf := func(format string, args ...interface{}) {
+	errorf := func(format string, args ...any) {
 		wrapError(fmt.Errorf(format, args...))
 	}
 
@@ -531,6 +539,21 @@ func (f *File) add(errs *ErrorList, block *LineBlock, line *Line, verb string, a
 			Path:   s,
 			Syntax: line,
 		})
+
+	case "ignore":
+		if len(args) != 1 {
+			errorf("ignore directive expects exactly one argument")
+			return
+		}
+		s, err := parseString(&args[0])
+		if err != nil {
+			errorf("invalid quoted string: %v", err)
+			return
+		}
+		f.Ignore = append(f.Ignore, &Ignore{
+			Path:   s,
+			Syntax: line,
+		})
 	}
 }
 
@@ -551,7 +574,7 @@ func parseReplace(filename string, line *Line, verb string, args []string, fix V
 			Err:      err,
 		}
 	}
-	errorf := func(format string, args ...interface{}) *Error {
+	errorf := func(format string, args ...any) *Error {
 		return wrapError(fmt.Errorf(format, args...))
 	}
 
@@ -662,7 +685,7 @@ func (f *WorkFile) add(errs *ErrorList, line *Line, verb string, args []string,
 			Err:      err,
 		})
 	}
-	errorf := func(format string, args ...interface{}) {
+	errorf := func(format string, args ...any) {
 		wrapError(fmt.Errorf(format, args...))
 	}
 
@@ -1571,7 +1594,7 @@ func (f *File) AddRetract(vi VersionInterval, rationale string) error {
 		r.Syntax = f.Syntax.addLine(nil, "retract", "[", AutoQuote(vi.Low), ",", AutoQuote(vi.High), "]")
 	}
 	if rationale != "" {
-		for _, line := range strings.Split(rationale, "\n") {
+		for line := range strings.SplitSeq(rationale, "\n") {
 			com := Comment{Token: "// " + line}
 			r.Syntax.Comment().Before = append(r.Syntax.Comment().Before, com)
 		}
@@ -1619,6 +1642,36 @@ func (f *File) DropTool(path string) error {
 	return nil
 }
 
+// AddIgnore adds a new ignore directive with the given path.
+// It does nothing if the ignore line already exists.
+func (f *File) AddIgnore(path string) error {
+	for _, t := range f.Ignore {
+		if t.Path == path {
+			return nil
+		}
+	}
+
+	f.Ignore = append(f.Ignore, &Ignore{
+		Path:   path,
+		Syntax: f.Syntax.addLine(nil, "ignore", path),
+	})
+
+	f.SortBlocks()
+	return nil
+}
+
+// DropIgnore removes a ignore directive with the given path.
+// It does nothing if no such ignore directive exists.
+func (f *File) DropIgnore(path string) error {
+	for _, t := range f.Ignore {
+		if t.Path == path {
+			t.Syntax.markRemoved()
+			*t = Ignore{}
+		}
+	}
+	return nil
+}
+
 func (f *File) SortBlocks() {
 	f.removeDups() // otherwise sorting is unsafe
 
@@ -1633,15 +1686,13 @@ func (f *File) SortBlocks() {
 		if !ok {
 			continue
 		}
-		less := lineLess
+		less := compareLine
 		if block.Token[0] == "exclude" && useSemanticSortForExclude {
-			less = lineExcludeLess
+			less = compareLineExclude
 		} else if block.Token[0] == "retract" {
-			less = lineRetractLess
+			less = compareLineRetract
 		}
-		sort.SliceStable(block.Line, func(i, j int) bool {
+		slices.SortStableFunc(block.Line, less)
-			return less(block.Line[i], block.Line[j])
-		})
 	}
 }
 
@@ -1657,10 +1708,10 @@ func (f *File) SortBlocks() {
 // retract directives are not de-duplicated since comments are
 // meaningful, and versions may be retracted multiple times.
 func (f *File) removeDups() {
-	removeDups(f.Syntax, &f.Exclude, &f.Replace, &f.Tool)
+	removeDups(f.Syntax, &f.Exclude, &f.Replace, &f.Tool, &f.Ignore)
 }
 
-func removeDups(syntax *FileSyntax, exclude *[]*Exclude, replace *[]*Replace, tool *[]*Tool) {
+func removeDups(syntax *FileSyntax, exclude *[]*Exclude, replace *[]*Replace, tool *[]*Tool, ignore *[]*Ignore) {
 	kill := make(map[*Line]bool)
 
 	// Remove duplicate excludes.
@@ -1719,6 +1770,24 @@ func removeDups(syntax *FileSyntax, exclude *[]*Exclude, replace *[]*Replace, to
 		*tool = newTool
 	}
 
+	if ignore != nil {
+		haveIgnore := make(map[string]bool)
+		for _, i := range *ignore {
+			if haveIgnore[i.Path] {
+				kill[i.Syntax] = true
+				continue
+			}
+			haveIgnore[i.Path] = true
+		}
+		var newIgnore []*Ignore
+		for _, i := range *ignore {
+			if !kill[i.Syntax] {
+				newIgnore = append(newIgnore, i)
+			}
+		}
+		*ignore = newIgnore
+	}
+
 	// Duplicate require and retract directives are not removed.
 
 	// Drop killed statements from the syntax tree.
@@ -1746,39 +1815,38 @@ func removeDups(syntax *FileSyntax, exclude *[]*Exclude, replace *[]*Replace, to
 	syntax.Stmt = stmts
 }
 
-// lineLess returns whether li should be sorted before lj. It sorts
+// compareLine compares li and lj. It sorts lexicographically without assigning
-// lexicographically without assigning any special meaning to tokens.
+// any special meaning to tokens.
-func lineLess(li, lj *Line) bool {
+func compareLine(li, lj *Line) int {
 	for k := 0; k < len(li.Token) && k < len(lj.Token); k++ {
 		if li.Token[k] != lj.Token[k] {
-			return li.Token[k] < lj.Token[k]
+			return cmp.Compare(li.Token[k], lj.Token[k])
 		}
 	}
-	return len(li.Token) < len(lj.Token)
+	return cmp.Compare(len(li.Token), len(lj.Token))
 }
 
-// lineExcludeLess reports whether li should be sorted before lj for lines in
+// compareLineExclude compares li and lj for lines in an "exclude" block.
-// an "exclude" block.
+func compareLineExclude(li, lj *Line) int {
-func lineExcludeLess(li, lj *Line) bool {
 	if len(li.Token) != 2 || len(lj.Token) != 2 {
 		// Not a known exclude specification.
 		// Fall back to sorting lexicographically.
-		return lineLess(li, lj)
+		return compareLine(li, lj)
 	}
 	// An exclude specification has two tokens: ModulePath and Version.
 	// Compare module path by string order and version by semver rules.
 	if pi, pj := li.Token[0], lj.Token[0]; pi != pj {
-		return pi < pj
+		return cmp.Compare(pi, pj)
 	}
-	return semver.Compare(li.Token[1], lj.Token[1]) < 0
+	return semver.Compare(li.Token[1], lj.Token[1])
 }
 
-// lineRetractLess returns whether li should be sorted before lj for lines in
+// compareLineRetract compares li and lj for lines in a "retract" block.
-// a "retract" block. It treats each line as a version interval. Single versions
+// It treats each line as a version interval. Single versions are compared as
-// are compared as if they were intervals with the same low and high version.
+// if they were intervals with the same low and high version.
 // Intervals are sorted in descending order, first by low version, then by
-// high version, using semver.Compare.
+// high version, using [semver.Compare].
-func lineRetractLess(li, lj *Line) bool {
+func compareLineRetract(li, lj *Line) int {
 	interval := func(l *Line) VersionInterval {
 		if len(l.Token) == 1 {
 			return VersionInterval{Low: l.Token[0], High: l.Token[0]}
@@ -1792,9 +1860,9 @@ func lineRetractLess(li, lj *Line) bool {
 	vii := interval(li)
 	vij := interval(lj)
 	if cmp := semver.Compare(vii.Low, vij.Low); cmp != 0 {
-		return cmp > 0
+		return -cmp
 	}
-	return semver.Compare(vii.High, vij.High) > 0
+	return -semver.Compare(vii.High, vij.High)
 }
 
 // checkCanonicalVersion returns a non-nil error if vers is not a canonical

vendor/golang.org/x/mod/modfile/work.go

@@ -6,7 +6,7 @@ package modfile
 
 import (
 	"fmt"
-	"sort"
+	"slices"
 	"strings"
 )
 
@@ -315,9 +315,7 @@ func (f *WorkFile) SortBlocks() {
 		if !ok {
 			continue
 		}
-		sort.SliceStable(block.Line, func(i, j int) bool {
+		slices.SortStableFunc(block.Line, compareLine)
-			return lineLess(block.Line[i], block.Line[j])
-		})
 	}
 }
 
@@ -331,5 +329,5 @@ func (f *WorkFile) SortBlocks() {
 // retract directives are not de-duplicated since comments are
 // meaningful, and versions may be retracted multiple times.
 func (f *WorkFile) removeDups() {
-	removeDups(f.Syntax, nil, &f.Replace, nil)
+	removeDups(f.Syntax, nil, &f.Replace, nil, nil)
 }

vendor/golang.org/x/mod/module/module.go

@@ -96,10 +96,11 @@ package module
 // Changes to the semantics in this file require approval from rsc.
 
 import (
+	"cmp"
 	"errors"
 	"fmt"
 	"path"
-	"sort"
+	"slices"
 	"strings"
 	"unicode"
 	"unicode/utf8"
@@ -260,7 +261,7 @@ func modPathOK(r rune) bool {
 
 // importPathOK reports whether r can appear in a package import path element.
 //
-// Import paths are intermediate between module paths and file paths: we allow
+// Import paths are intermediate between module paths and file paths: we
 // disallow characters that would be confusing or ambiguous as arguments to
 // 'go get' (such as '@' and ' ' ), but allow certain characters that are
 // otherwise-unambiguous on the command line and historically used for some
@@ -657,17 +658,15 @@ func CanonicalVersion(v string) string {
 // optionally followed by a tie-breaking suffix introduced by a slash character,
 // like in "v0.0.1/go.mod".
 func Sort(list []Version) {
-	sort.Slice(list, func(i, j int) bool {
+	slices.SortFunc(list, func(i, j Version) int {
-		mi := list[i]
+		if i.Path != j.Path {
-		mj := list[j]
+			return strings.Compare(i.Path, j.Path)
-		if mi.Path != mj.Path {
-			return mi.Path < mj.Path
 		}
 		// To help go.sum formatting, allow version/file.
 		// Compare semver prefix by semver rules,
 		// file by string order.
-		vi := mi.Version
+		vi := i.Version
-		vj := mj.Version
+		vj := j.Version
 		var fi, fj string
 		if k := strings.Index(vi, "/"); k >= 0 {
 			vi, fi = vi[:k], vi[k:]
@@ -676,9 +675,9 @@ func Sort(list []Version) {
 			vj, fj = vj[:k], vj[k:]
 		}
 		if vi != vj {
-			return semver.Compare(vi, vj) < 0
+			return semver.Compare(vi, vj)
 		}
-		return fi < fj
+		return cmp.Compare(fi, fj)
 	})
 }
 
@@ -803,8 +802,8 @@ func MatchPrefixPatterns(globs, target string) bool {
 	for globs != "" {
 		// Extract next non-empty glob in comma-separated list.
 		var glob string
-		if i := strings.Index(globs, ","); i >= 0 {
+		if before, after, ok := strings.Cut(globs, ","); ok {
-			glob, globs = globs[:i], globs[i+1:]
+			glob, globs = before, after
 		} else {
 			glob, globs = globs, ""
 		}

vendor/golang.org/x/mod/semver/semver.go

@@ -22,7 +22,10 @@
 // as shorthands for vMAJOR.0.0 and vMAJOR.MINOR.0.
 package semver
 
-import "sort"
+import (
+	"slices"
+	"strings"
+)
 
 // parsed returns the parsed form of a semantic version string.
 type parsed struct {
@@ -42,8 +45,8 @@ func IsValid(v string) bool {
 
 // Canonical returns the canonical formatting of the semantic version v.
 // It fills in any missing .MINOR or .PATCH and discards build metadata.
-// Two semantic versions compare equal only if their canonical formattings
+// Two semantic versions compare equal only if their canonical formatting
-// are identical strings.
+// is an identical string.
 // The canonical invalid semantic version is the empty string.
 func Canonical(v string) string {
 	p, ok := parse(v)
@@ -156,17 +159,20 @@ type ByVersion []string
 
 func (vs ByVersion) Len() int           { return len(vs) }
 func (vs ByVersion) Swap(i, j int)      { vs[i], vs[j] = vs[j], vs[i] }
-func (vs ByVersion) Less(i, j int) bool {
+func (vs ByVersion) Less(i, j int) bool { return compareVersion(vs[i], vs[j]) < 0 }
-	cmp := Compare(vs[i], vs[j])
+
-	if cmp != 0 {
+// Sort sorts a list of semantic version strings using [Compare] and falls back
-		return cmp < 0
+// to use [strings.Compare] if both versions are considered equal.
-	}
+func Sort(list []string) {
-	return vs[i] < vs[j]
+	slices.SortFunc(list, compareVersion)
 }
 
-// Sort sorts a list of semantic version strings using [ByVersion].
+func compareVersion(a, b string) int {
-func Sort(list []string) {
+	cmp := Compare(a, b)
-	sort.Sort(ByVersion(list))
+	if cmp != 0 {
+		return cmp
+	}
+	return strings.Compare(a, b)
 }
 
 func parse(v string) (p parsed, ok bool) {

vendor/golang.org/x/net/context/context.go

@@ -2,44 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Package context defines the Context type, which carries deadlines,
+// Package context has been superseded by the standard library [context] package.
-// cancellation signals, and other request-scoped values across API boundaries
-// and between processes.
-// As of Go 1.7 this package is available in the standard library under the
-// name [context], and migrating to it can be done automatically with [go fix].
 //
-// Incoming requests to a server should create a [Context], and outgoing
+// Deprecated: Use the standard library context package instead.
-// calls to servers should accept a Context. The chain of function
-// calls between them must propagate the Context, optionally replacing
-// it with a derived Context created using [WithCancel], [WithDeadline],
-// [WithTimeout], or [WithValue].
-//
-// Programs that use Contexts should follow these rules to keep interfaces
-// consistent across packages and enable static analysis tools to check context
-// propagation:
-//
-// Do not store Contexts inside a struct type; instead, pass a Context
-// explicitly to each function that needs it. This is discussed further in
-// https://go.dev/blog/context-and-structs. The Context should be the first
-// parameter, typically named ctx:
-//
-//	func DoSomething(ctx context.Context, arg Arg) error {
-//		// ... use ctx ...
-//	}
-//
-// Do not pass a nil [Context], even if a function permits it. Pass [context.TODO]
-// if you are unsure about which Context to use.
-//
-// Use context Values only for request-scoped data that transits processes and
-// APIs, not for passing optional parameters to functions.
-//
-// The same Context may be passed to functions running in different goroutines;
-// Contexts are safe for simultaneous use by multiple goroutines.
-//
-// See https://go.dev/blog/context for example code for a server that uses
-// Contexts.
-//
-// [go fix]: https://go.dev/cmd/go#hdr-Update_packages_to_use_new_APIs
 package context
 
 import (
@@ -51,36 +16,37 @@ import (
 // API boundaries.
 //
 // Context's methods may be called by multiple goroutines simultaneously.
+//
+//go:fix inline
 type Context = context.Context
 
 // Canceled is the error returned by [Context.Err] when the context is canceled
 // for some reason other than its deadline passing.
+//
+//go:fix inline
 var Canceled = context.Canceled
 
 // DeadlineExceeded is the error returned by [Context.Err] when the context is canceled
 // due to its deadline passing.
+//
+//go:fix inline
 var DeadlineExceeded = context.DeadlineExceeded
 
 // Background returns a non-nil, empty Context. It is never canceled, has no
 // values, and has no deadline. It is typically used by the main function,
 // initialization, and tests, and as the top-level Context for incoming
 // requests.
-func Background() Context {
+//
-	return background
+//go:fix inline
-}
+func Background() Context { return context.Background() }
 
 // TODO returns a non-nil, empty Context. Code should use context.TODO when
 // it's unclear which Context to use or it is not yet available (because the
 // surrounding function has not yet been extended to accept a Context
 // parameter).
-func TODO() Context {
+//
-	return todo
+//go:fix inline
-}
+func TODO() Context { return context.TODO() }
-
-var (
-	background = context.Background()
-	todo       = context.TODO()
-)
 
 // A CancelFunc tells an operation to abandon its work.
 // A CancelFunc does not wait for the work to stop.
@@ -95,6 +61,8 @@ type CancelFunc = context.CancelFunc
 //
 // Canceling this context releases resources associated with it, so code should
 // call cancel as soon as the operations running in this [Context] complete.
+//
+//go:fix inline
 func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
 	return context.WithCancel(parent)
 }
@@ -108,6 +76,8 @@ func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
 //
 // Canceling this context releases resources associated with it, so code should
 // call cancel as soon as the operations running in this [Context] complete.
+//
+//go:fix inline
 func WithDeadline(parent Context, d time.Time) (Context, CancelFunc) {
 	return context.WithDeadline(parent, d)
 }
@@ -122,6 +92,8 @@ func WithDeadline(parent Context, d time.Time) (Context, CancelFunc) {
 //		defer cancel()  // releases resources if slowOperation completes before timeout elapses
 //		return slowOperation(ctx)
 //	}
+//
+//go:fix inline
 func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
 	return context.WithTimeout(parent, timeout)
 }
@@ -139,6 +111,8 @@ func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
 // interface{}, context keys often have concrete type
 // struct{}. Alternatively, exported context key variables' static
 // type should be a pointer or interface.
+//
+//go:fix inline
 func WithValue(parent Context, key, val interface{}) Context {
 	return context.WithValue(parent, key, val)
 }

vendor/golang.org/x/net/http2/config.go

@@ -27,6 +27,7 @@ import (
 //   - If the resulting value is zero or out of range, use a default.
 type http2Config struct {
 	MaxConcurrentStreams         uint32
+	StrictMaxConcurrentRequests  bool
 	MaxDecoderHeaderTableSize    uint32
 	MaxEncoderHeaderTableSize    uint32
 	MaxReadFrameSize             uint32
@@ -55,7 +56,7 @@ func configFromServer(h1 *http.Server, h2 *Server) http2Config {
 		PermitProhibitedCipherSuites: h2.PermitProhibitedCipherSuites,
 		CountError:                   h2.CountError,
 	}
-	fillNetHTTPServerConfig(&conf, h1)
+	fillNetHTTPConfig(&conf, h1.HTTP2)
 	setConfigDefaults(&conf, true)
 	return conf
 }
@@ -64,6 +65,7 @@ func configFromServer(h1 *http.Server, h2 *Server) http2Config {
 // (the net/http Transport).
 func configFromTransport(h2 *Transport) http2Config {
 	conf := http2Config{
+		StrictMaxConcurrentRequests: h2.StrictMaxConcurrentStreams,
 		MaxEncoderHeaderTableSize:   h2.MaxEncoderHeaderTableSize,
 		MaxDecoderHeaderTableSize:   h2.MaxDecoderHeaderTableSize,
 		MaxReadFrameSize:            h2.MaxReadFrameSize,
@@ -81,7 +83,7 @@ func configFromTransport(h2 *Transport) http2Config {
 	}
 
 	if h2.t1 != nil {
-		fillNetHTTPTransportConfig(&conf, h2.t1)
+		fillNetHTTPConfig(&conf, h2.t1.HTTP2)
 	}
 	setConfigDefaults(&conf, false)
 	return conf
@@ -120,3 +122,48 @@ func adjustHTTP1MaxHeaderSize(n int64) int64 {
 	const typicalHeaders = 10   // conservative
 	return n + typicalHeaders*perFieldOverhead
 }
+
+func fillNetHTTPConfig(conf *http2Config, h2 *http.HTTP2Config) {
+	if h2 == nil {
+		return
+	}
+	if h2.MaxConcurrentStreams != 0 {
+		conf.MaxConcurrentStreams = uint32(h2.MaxConcurrentStreams)
+	}
+	if http2ConfigStrictMaxConcurrentRequests(h2) {
+		conf.StrictMaxConcurrentRequests = true
+	}
+	if h2.MaxEncoderHeaderTableSize != 0 {
+		conf.MaxEncoderHeaderTableSize = uint32(h2.MaxEncoderHeaderTableSize)
+	}
+	if h2.MaxDecoderHeaderTableSize != 0 {
+		conf.MaxDecoderHeaderTableSize = uint32(h2.MaxDecoderHeaderTableSize)
+	}
+	if h2.MaxConcurrentStreams != 0 {
+		conf.MaxConcurrentStreams = uint32(h2.MaxConcurrentStreams)
+	}
+	if h2.MaxReadFrameSize != 0 {
+		conf.MaxReadFrameSize = uint32(h2.MaxReadFrameSize)
+	}
+	if h2.MaxReceiveBufferPerConnection != 0 {
+		conf.MaxUploadBufferPerConnection = int32(h2.MaxReceiveBufferPerConnection)
+	}
+	if h2.MaxReceiveBufferPerStream != 0 {
+		conf.MaxUploadBufferPerStream = int32(h2.MaxReceiveBufferPerStream)
+	}
+	if h2.SendPingTimeout != 0 {
+		conf.SendPingTimeout = h2.SendPingTimeout
+	}
+	if h2.PingTimeout != 0 {
+		conf.PingTimeout = h2.PingTimeout
+	}
+	if h2.WriteByteTimeout != 0 {
+		conf.WriteByteTimeout = h2.WriteByteTimeout
+	}
+	if h2.PermitProhibitedCipherSuites {
+		conf.PermitProhibitedCipherSuites = true
+	}
+	if h2.CountError != nil {
+		conf.CountError = h2.CountError
+	}
+}

vendor/golang.org/x/net/http2/config_go124.go

@@ -1,61 +0,0 @@
-// Copyright 2024 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build go1.24
-
-package http2
-
-import "net/http"
-
-// fillNetHTTPServerConfig sets fields in conf from srv.HTTP2.
-func fillNetHTTPServerConfig(conf *http2Config, srv *http.Server) {
-	fillNetHTTPConfig(conf, srv.HTTP2)
-}
-
-// fillNetHTTPTransportConfig sets fields in conf from tr.HTTP2.
-func fillNetHTTPTransportConfig(conf *http2Config, tr *http.Transport) {
-	fillNetHTTPConfig(conf, tr.HTTP2)
-}
-
-func fillNetHTTPConfig(conf *http2Config, h2 *http.HTTP2Config) {
-	if h2 == nil {
-		return
-	}
-	if h2.MaxConcurrentStreams != 0 {
-		conf.MaxConcurrentStreams = uint32(h2.MaxConcurrentStreams)
-	}
-	if h2.MaxEncoderHeaderTableSize != 0 {
-		conf.MaxEncoderHeaderTableSize = uint32(h2.MaxEncoderHeaderTableSize)
-	}
-	if h2.MaxDecoderHeaderTableSize != 0 {
-		conf.MaxDecoderHeaderTableSize = uint32(h2.MaxDecoderHeaderTableSize)
-	}
-	if h2.MaxConcurrentStreams != 0 {
-		conf.MaxConcurrentStreams = uint32(h2.MaxConcurrentStreams)
-	}
-	if h2.MaxReadFrameSize != 0 {
-		conf.MaxReadFrameSize = uint32(h2.MaxReadFrameSize)
-	}
-	if h2.MaxReceiveBufferPerConnection != 0 {
-		conf.MaxUploadBufferPerConnection = int32(h2.MaxReceiveBufferPerConnection)
-	}
-	if h2.MaxReceiveBufferPerStream != 0 {
-		conf.MaxUploadBufferPerStream = int32(h2.MaxReceiveBufferPerStream)
-	}
-	if h2.SendPingTimeout != 0 {
-		conf.SendPingTimeout = h2.SendPingTimeout
-	}
-	if h2.PingTimeout != 0 {
-		conf.PingTimeout = h2.PingTimeout
-	}
-	if h2.WriteByteTimeout != 0 {
-		conf.WriteByteTimeout = h2.WriteByteTimeout
-	}
-	if h2.PermitProhibitedCipherSuites {
-		conf.PermitProhibitedCipherSuites = true
-	}
-	if h2.CountError != nil {
-		conf.CountError = h2.CountError
-	}
-}

vendor/golang.org/x/net/http2/config_go125.go

@@ -0,0 +1,15 @@
+// Copyright 2025 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !go1.26
+
+package http2
+
+import (
+	"net/http"
+)
+
+func http2ConfigStrictMaxConcurrentRequests(h2 *http.HTTP2Config) bool {
+	return false
+}

vendor/golang.org/x/net/http2/config_go126.go

@@ -0,0 +1,15 @@
+// Copyright 2025 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.26
+
+package http2
+
+import (
+	"net/http"
+)
+
+func http2ConfigStrictMaxConcurrentRequests(h2 *http.HTTP2Config) bool {
+	return h2.StrictMaxConcurrentRequests
+}

vendor/golang.org/x/net/http2/config_pre_go124.go

@@ -1,16 +0,0 @@
-// Copyright 2024 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build !go1.24
-
-package http2
-
-import "net/http"
-
-// Pre-Go 1.24 fallback.
-// The Server.HTTP2 and Transport.HTTP2 config fields were added in Go 1.24.
-
-func fillNetHTTPServerConfig(conf *http2Config, srv *http.Server) {}
-
-func fillNetHTTPTransportConfig(conf *http2Config, tr *http.Transport) {}

vendor/golang.org/x/net/http2/frame.go

@@ -39,7 +39,7 @@ const (
 	FrameContinuation FrameType = 0x9
 )
 
-var frameName = map[FrameType]string{
+var frameNames = [...]string{
 	FrameData:         "DATA",
 	FrameHeaders:      "HEADERS",
 	FramePriority:     "PRIORITY",
@@ -53,10 +53,10 @@ var frameName = map[FrameType]string{
 }
 
 func (t FrameType) String() string {
-	if s, ok := frameName[t]; ok {
+	if int(t) < len(frameNames) {
-		return s
+		return frameNames[t]
 	}
-	return fmt.Sprintf("UNKNOWN_FRAME_TYPE_%d", uint8(t))
+	return fmt.Sprintf("UNKNOWN_FRAME_TYPE_%d", t)
 }
 
 // Flags is a bitmask of HTTP/2 flags.
@@ -124,7 +124,7 @@ var flagName = map[FrameType]map[Flags]string{
 // might be 0).
 type frameParser func(fc *frameCache, fh FrameHeader, countError func(string), payload []byte) (Frame, error)
 
-var frameParsers = map[FrameType]frameParser{
+var frameParsers = [...]frameParser{
 	FrameData:         parseDataFrame,
 	FrameHeaders:      parseHeadersFrame,
 	FramePriority:     parsePriorityFrame,
@@ -138,8 +138,8 @@ var frameParsers = map[FrameType]frameParser{
 }
 
 func typeFrameParser(t FrameType) frameParser {
-	if f := frameParsers[t]; f != nil {
+	if int(t) < len(frameParsers) {
-		return f
+		return frameParsers[t]
 	}
 	return parseUnknownFrame
 }
@@ -280,6 +280,8 @@ type Framer struct {
 	// lastHeaderStream is non-zero if the last frame was an
 	// unfinished HEADERS/CONTINUATION.
 	lastHeaderStream uint32
+	// lastFrameType holds the type of the last frame for verifying frame order.
+	lastFrameType FrameType
 
 	maxReadSize uint32
 	headerBuf   [frameHeaderLen]byte
@@ -347,7 +349,7 @@ func (fr *Framer) maxHeaderListSize() uint32 {
 func (f *Framer) startWrite(ftype FrameType, flags Flags, streamID uint32) {
 	// Write the FrameHeader.
 	f.wbuf = append(f.wbuf[:0],
-		0, // 3 bytes of length, filled in in endWrite
+		0, // 3 bytes of length, filled in endWrite
 		0,
 		0,
 		byte(ftype),
@@ -488,30 +490,41 @@ func terminalReadFrameError(err error) bool {
 	return err != nil
 }
 
-// ReadFrame reads a single frame. The returned Frame is only valid
+// ReadFrameHeader reads the header of the next frame.
-// until the next call to ReadFrame.
+// It reads the 9-byte fixed frame header, and does not read any portion of the
+// frame payload. The caller is responsible for consuming the payload, either
+// with ReadFrameForHeader or directly from the Framer's io.Reader.
 //
-// If the frame is larger than previously set with SetMaxReadFrameSize, the
+// If the frame is larger than previously set with SetMaxReadFrameSize, it
-// returned error is ErrFrameTooLarge. Other errors may be of type
+// returns the frame header and ErrFrameTooLarge.
-// ConnectionError, StreamError, or anything else from the underlying
-// reader.
 //
-// If ReadFrame returns an error and a non-nil Frame, the Frame's StreamID
+// If the returned FrameHeader.StreamID is non-zero, it indicates the stream
-// indicates the stream responsible for the error.
+// responsible for the error.
-func (fr *Framer) ReadFrame() (Frame, error) {
+func (fr *Framer) ReadFrameHeader() (FrameHeader, error) {
 	fr.errDetail = nil
-	if fr.lastFrame != nil {
-		fr.lastFrame.invalidate()
-	}
 	fh, err := readFrameHeader(fr.headerBuf[:], fr.r)
 	if err != nil {
-		return nil, err
+		return fh, err
 	}
 	if fh.Length > fr.maxReadSize {
 		if fh == invalidHTTP1LookingFrameHeader() {
-			return nil, fmt.Errorf("http2: failed reading the frame payload: %w, note that the frame header looked like an HTTP/1.1 header", err)
+			return fh, fmt.Errorf("http2: failed reading the frame payload: %w, note that the frame header looked like an HTTP/1.1 header", ErrFrameTooLarge)
 		}
-		return nil, ErrFrameTooLarge
+		return fh, ErrFrameTooLarge
+	}
+	if err := fr.checkFrameOrder(fh); err != nil {
+		return fh, err
+	}
+	return fh, nil
+}
+
+// ReadFrameForHeader reads the payload for the frame with the given FrameHeader.
+//
+// It behaves identically to ReadFrame, other than not checking the maximum
+// frame size.
+func (fr *Framer) ReadFrameForHeader(fh FrameHeader) (Frame, error) {
+	if fr.lastFrame != nil {
+		fr.lastFrame.invalidate()
 	}
 	payload := fr.getReadBuf(fh.Length)
 	if _, err := io.ReadFull(fr.r, payload); err != nil {
@@ -527,9 +540,7 @@ func (fr *Framer) ReadFrame() (Frame, error) {
 		}
 		return nil, err
 	}
-	if err := fr.checkFrameOrder(f); err != nil {
+	fr.lastFrame = f
-		return nil, err
-	}
 	if fr.logReads {
 		fr.debugReadLoggerf("http2: Framer %p: read %v", fr, summarizeFrame(f))
 	}
@@ -539,6 +550,24 @@ func (fr *Framer) ReadFrame() (Frame, error) {
 	return f, nil
 }
 
+// ReadFrame reads a single frame. The returned Frame is only valid
+// until the next call to ReadFrame or ReadFrameBodyForHeader.
+//
+// If the frame is larger than previously set with SetMaxReadFrameSize, the
+// returned error is ErrFrameTooLarge. Other errors may be of type
+// ConnectionError, StreamError, or anything else from the underlying
+// reader.
+//
+// If ReadFrame returns an error and a non-nil Frame, the Frame's StreamID
+// indicates the stream responsible for the error.
+func (fr *Framer) ReadFrame() (Frame, error) {
+	fh, err := fr.ReadFrameHeader()
+	if err != nil {
+		return nil, err
+	}
+	return fr.ReadFrameForHeader(fh)
+}
+
 // connError returns ConnectionError(code) but first
 // stashes away a public reason to the caller can optionally relay it
 // to the peer before hanging up on them. This might help others debug
@@ -551,20 +580,19 @@ func (fr *Framer) connError(code ErrCode, reason string) error {
 // checkFrameOrder reports an error if f is an invalid frame to return
 // next from ReadFrame. Mostly it checks whether HEADERS and
 // CONTINUATION frames are contiguous.
-func (fr *Framer) checkFrameOrder(f Frame) error {
+func (fr *Framer) checkFrameOrder(fh FrameHeader) error {
-	last := fr.lastFrame
+	lastType := fr.lastFrameType
-	fr.lastFrame = f
+	fr.lastFrameType = fh.Type
 	if fr.AllowIllegalReads {
 		return nil
 	}
 
-	fh := f.Header()
 	if fr.lastHeaderStream != 0 {
 		if fh.Type != FrameContinuation {
 			return fr.connError(ErrCodeProtocol,
 				fmt.Sprintf("got %s for stream %d; expected CONTINUATION following %s for stream %d",
 					fh.Type, fh.StreamID,
-					last.Header().Type, fr.lastHeaderStream))
+					lastType, fr.lastHeaderStream))
 		}
 		if fh.StreamID != fr.lastHeaderStream {
 			return fr.connError(ErrCodeProtocol,
@@ -1152,7 +1180,16 @@ type PriorityFrame struct {
 	PriorityParam
 }
 
-// PriorityParam are the stream prioritzation parameters.
+var defaultRFC9218Priority = PriorityParam{
+	incremental: 0,
+	urgency:     3,
+}
+
+// Note that HTTP/2 has had two different prioritization schemes, and
+// PriorityParam struct below is a superset of both schemes. The exported
+// symbols are from RFC 7540 and the non-exported ones are from RFC 9218.
+
+// PriorityParam are the stream prioritization parameters.
 type PriorityParam struct {
 	// StreamDep is a 31-bit stream identifier for the
 	// stream that this stream depends on. Zero means no
@@ -1167,6 +1204,20 @@ type PriorityParam struct {
 	// the spec, "Add one to the value to obtain a weight between
 	// 1 and 256."
 	Weight uint8
+
+	// "The urgency (u) parameter value is Integer (see Section 3.3.1 of
+	// [STRUCTURED-FIELDS]), between 0 and 7 inclusive, in descending order of
+	// priority. The default is 3."
+	urgency uint8
+
+	// "The incremental (i) parameter value is Boolean (see Section 3.3.6 of
+	// [STRUCTURED-FIELDS]). It indicates if an HTTP response can be processed
+	// incrementally, i.e., provide some meaningful output as chunks of the
+	// response arrive."
+	//
+	// We use uint8 (i.e. 0 is false, 1 is true) instead of bool so we can
+	// avoid unnecessary type conversions and because either type takes 1 byte.
+	incremental uint8
 }
 
 func (p PriorityParam) IsZero() bool {

vendor/golang.org/x/net/http2/gotrack.go

@@ -15,21 +15,32 @@ import (
 	"runtime"
 	"strconv"
 	"sync"
+	"sync/atomic"
 )
 
 var DebugGoroutines = os.Getenv("DEBUG_HTTP2_GOROUTINES") == "1"
 
+// Setting DebugGoroutines to false during a test to disable goroutine debugging
+// results in race detector complaints when a test leaves goroutines running before
+// returning. Tests shouldn't do this, of course, but when they do it generally shows
+// up as infrequent, hard-to-debug flakes. (See #66519.)
+//
+// Disable goroutine debugging during individual tests with an atomic bool.
+// (Note that it's safe to enable/disable debugging mid-test, so the actual race condition
+// here is harmless.)
+var disableDebugGoroutines atomic.Bool
+
 type goroutineLock uint64
 
 func newGoroutineLock() goroutineLock {
-	if !DebugGoroutines {
+	if !DebugGoroutines || disableDebugGoroutines.Load() {
 		return 0
 	}
 	return goroutineLock(curGoroutineID())
 }
 
 func (g goroutineLock) check() {
-	if !DebugGoroutines {
+	if !DebugGoroutines || disableDebugGoroutines.Load() {
 		return
 	}
 	if curGoroutineID() != uint64(g) {
@@ -38,7 +49,7 @@ func (g goroutineLock) check() {
 }
 
 func (g goroutineLock) checkNotOn() {
-	if !DebugGoroutines {
+	if !DebugGoroutines || disableDebugGoroutines.Load() {
 		return
 	}
 	if curGoroutineID() == uint64(g) {

vendor/golang.org/x/net/http2/http2.go

@@ -11,13 +11,10 @@
 // requires Go 1.6 or later)
 //
 // See https://http2.github.io/ for more information on HTTP/2.
-//
-// See https://http2.golang.org/ for a test server running this code.
 package http2 // import "golang.org/x/net/http2"
 
 import (
 	"bufio"
-	"context"
 	"crypto/tls"
 	"errors"
 	"fmt"
@@ -37,7 +34,6 @@ var (
 	VerboseLogs    bool
 	logFrameWrites bool
 	logFrameReads  bool
-	inTests        bool
 
 	// Enabling extended CONNECT by causes browsers to attempt to use
 	// WebSockets-over-HTTP/2. This results in problems when the server's websocket
@@ -257,15 +253,13 @@ func (cw closeWaiter) Wait() {
 // idle memory usage with many connections.
 type bufferedWriter struct {
 	_           incomparable
-	group       synctestGroupInterface // immutable
 	conn        net.Conn      // immutable
 	bw          *bufio.Writer // non-nil when data is buffered
 	byteTimeout time.Duration // immutable, WriteByteTimeout
 }
 
-func newBufferedWriter(group synctestGroupInterface, conn net.Conn, timeout time.Duration) *bufferedWriter {
+func newBufferedWriter(conn net.Conn, timeout time.Duration) *bufferedWriter {
 	return &bufferedWriter{
-		group:       group,
 		conn:        conn,
 		byteTimeout: timeout,
 	}
@@ -316,24 +310,18 @@ func (w *bufferedWriter) Flush() error {
 type bufferedWriterTimeoutWriter bufferedWriter
 
 func (w *bufferedWriterTimeoutWriter) Write(p []byte) (n int, err error) {
-	return writeWithByteTimeout(w.group, w.conn, w.byteTimeout, p)
+	return writeWithByteTimeout(w.conn, w.byteTimeout, p)
 }
 
 // writeWithByteTimeout writes to conn.
 // If more than timeout passes without any bytes being written to the connection,
 // the write fails.
-func writeWithByteTimeout(group synctestGroupInterface, conn net.Conn, timeout time.Duration, p []byte) (n int, err error) {
+func writeWithByteTimeout(conn net.Conn, timeout time.Duration, p []byte) (n int, err error) {
 	if timeout <= 0 {
 		return conn.Write(p)
 	}
 	for {
-		var now time.Time
+		conn.SetWriteDeadline(time.Now().Add(timeout))
-		if group == nil {
-			now = time.Now()
-		} else {
-			now = group.Now()
-		}
-		conn.SetWriteDeadline(now.Add(timeout))
 		nn, err := conn.Write(p[n:])
 		n += nn
 		if n == len(p) || nn == 0 || !errors.Is(err, os.ErrDeadlineExceeded) {
@@ -419,14 +407,3 @@ func (s *sorter) SortStrings(ss []string) {
 // makes that struct also non-comparable, and generally doesn't add
 // any size (as long as it's first).
 type incomparable [0]func()
-
-// synctestGroupInterface is the methods of synctestGroup used by Server and Transport.
-// It's defined as an interface here to let us keep synctestGroup entirely test-only
-// and not a part of non-test builds.
-type synctestGroupInterface interface {
-	Join()
-	Now() time.Time
-	NewTimer(d time.Duration) timer
-	AfterFunc(d time.Duration, f func()) timer
-	ContextWithTimeout(ctx context.Context, d time.Duration) (context.Context, context.CancelFunc)
-}

vendor/golang.org/x/net/http2/server.go

@@ -176,44 +176,15 @@ type Server struct {
 	// so that we don't embed a Mutex in this struct, which will make the
 	// struct non-copyable, which might break some callers.
 	state *serverInternalState
-
-	// Synchronization group used for testing.
-	// Outside of tests, this is nil.
-	group synctestGroupInterface
-}
-
-func (s *Server) markNewGoroutine() {
-	if s.group != nil {
-		s.group.Join()
-	}
-}
-
-func (s *Server) now() time.Time {
-	if s.group != nil {
-		return s.group.Now()
-	}
-	return time.Now()
-}
-
-// newTimer creates a new time.Timer, or a synthetic timer in tests.
-func (s *Server) newTimer(d time.Duration) timer {
-	if s.group != nil {
-		return s.group.NewTimer(d)
-	}
-	return timeTimer{time.NewTimer(d)}
-}
-
-// afterFunc creates a new time.AfterFunc timer, or a synthetic timer in tests.
-func (s *Server) afterFunc(d time.Duration, f func()) timer {
-	if s.group != nil {
-		return s.group.AfterFunc(d, f)
-	}
-	return timeTimer{time.AfterFunc(d, f)}
 }
 
 type serverInternalState struct {
 	mu          sync.Mutex
 	activeConns map[*serverConn]struct{}
+
+	// Pool of error channels. This is per-Server rather than global
+	// because channels can't be reused across synctest bubbles.
+	errChanPool sync.Pool
 }
 
 func (s *serverInternalState) registerConn(sc *serverConn) {
@@ -245,6 +216,27 @@ func (s *serverInternalState) startGracefulShutdown() {
 	s.mu.Unlock()
 }
 
+// Global error channel pool used for uninitialized Servers.
+// We use a per-Server pool when possible to avoid using channels across synctest bubbles.
+var errChanPool = sync.Pool{
+	New: func() any { return make(chan error, 1) },
+}
+
+func (s *serverInternalState) getErrChan() chan error {
+	if s == nil {
+		return errChanPool.Get().(chan error) // Server used without calling ConfigureServer
+	}
+	return s.errChanPool.Get().(chan error)
+}
+
+func (s *serverInternalState) putErrChan(ch chan error) {
+	if s == nil {
+		errChanPool.Put(ch) // Server used without calling ConfigureServer
+		return
+	}
+	s.errChanPool.Put(ch)
+}
+
 // ConfigureServer adds HTTP/2 support to a net/http Server.
 //
 // The configuration conf may be nil.
@@ -257,7 +249,10 @@ func ConfigureServer(s *http.Server, conf *Server) error {
 	if conf == nil {
 		conf = new(Server)
 	}
-	conf.state = &serverInternalState{activeConns: make(map[*serverConn]struct{})}
+	conf.state = &serverInternalState{
+		activeConns: make(map[*serverConn]struct{}),
+		errChanPool: sync.Pool{New: func() any { return make(chan error, 1) }},
+	}
 	if h1, h2 := s, conf; h2.IdleTimeout == 0 {
 		if h1.IdleTimeout != 0 {
 			h2.IdleTimeout = h1.IdleTimeout
@@ -423,6 +418,9 @@ func (o *ServeConnOpts) handler() http.Handler {
 //
 // The opts parameter is optional. If nil, default values are used.
 func (s *Server) ServeConn(c net.Conn, opts *ServeConnOpts) {
+	if opts == nil {
+		opts = &ServeConnOpts{}
+	}
 	s.serveConn(c, opts, nil)
 }
 
@@ -438,7 +436,7 @@ func (s *Server) serveConn(c net.Conn, opts *ServeConnOpts, newf func(*serverCon
 		conn:                        c,
 		baseCtx:                     baseCtx,
 		remoteAddrStr:               c.RemoteAddr().String(),
-		bw:                          newBufferedWriter(s.group, c, conf.WriteByteTimeout),
+		bw:                          newBufferedWriter(c, conf.WriteByteTimeout),
 		handler:                     opts.handler(),
 		streams:                     make(map[uint32]*stream),
 		readFrameCh:                 make(chan readFrameResult),
@@ -638,11 +636,11 @@ type serverConn struct {
 	pingSent                    bool
 	sentPingData                [8]byte
 	goAwayCode                  ErrCode
-	shutdownTimer               timer // nil until used
+	shutdownTimer               *time.Timer // nil until used
-	idleTimer                   timer // nil if unused
+	idleTimer                   *time.Timer // nil if unused
 	readIdleTimeout             time.Duration
 	pingTimeout                 time.Duration
-	readIdleTimer               timer // nil if unused
+	readIdleTimer               *time.Timer // nil if unused
 
 	// Owned by the writeFrameAsync goroutine:
 	headerWriteBuf bytes.Buffer
@@ -690,8 +688,8 @@ type stream struct {
 	resetQueued      bool        // RST_STREAM queued for write; set by sc.resetStream
 	gotTrailerHeader bool        // HEADER frame for trailers was seen
 	wroteHeaders     bool        // whether we wrote headers (not status 100)
-	readDeadline     timer // nil if unused
+	readDeadline     *time.Timer // nil if unused
-	writeDeadline    timer // nil if unused
+	writeDeadline    *time.Timer // nil if unused
 	closeErr         error       // set before cw is closed
 
 	trailer    http.Header // accumulated trailers
@@ -848,7 +846,6 @@ type readFrameResult struct {
 // consumer is done with the frame.
 // It's run on its own goroutine.
 func (sc *serverConn) readFrames() {
-	sc.srv.markNewGoroutine()
 	gate := make(chan struct{})
 	gateDone := func() { gate <- struct{}{} }
 	for {
@@ -881,7 +878,6 @@ type frameWriteResult struct {
 // At most one goroutine can be running writeFrameAsync at a time per
 // serverConn.
 func (sc *serverConn) writeFrameAsync(wr FrameWriteRequest, wd *writeData) {
-	sc.srv.markNewGoroutine()
 	var err error
 	if wd == nil {
 		err = wr.write.writeFrame(sc)
@@ -965,22 +961,22 @@ func (sc *serverConn) serve(conf http2Config) {
 	sc.setConnState(http.StateIdle)
 
 	if sc.srv.IdleTimeout > 0 {
-		sc.idleTimer = sc.srv.afterFunc(sc.srv.IdleTimeout, sc.onIdleTimer)
+		sc.idleTimer = time.AfterFunc(sc.srv.IdleTimeout, sc.onIdleTimer)
 		defer sc.idleTimer.Stop()
 	}
 
 	if conf.SendPingTimeout > 0 {
 		sc.readIdleTimeout = conf.SendPingTimeout
-		sc.readIdleTimer = sc.srv.afterFunc(conf.SendPingTimeout, sc.onReadIdleTimer)
+		sc.readIdleTimer = time.AfterFunc(conf.SendPingTimeout, sc.onReadIdleTimer)
 		defer sc.readIdleTimer.Stop()
 	}
 
 	go sc.readFrames() // closed by defer sc.conn.Close above
 
-	settingsTimer := sc.srv.afterFunc(firstSettingsTimeout, sc.onSettingsTimer)
+	settingsTimer := time.AfterFunc(firstSettingsTimeout, sc.onSettingsTimer)
 	defer settingsTimer.Stop()
 
-	lastFrameTime := sc.srv.now()
+	lastFrameTime := time.Now()
 	loopNum := 0
 	for {
 		loopNum++
@@ -994,7 +990,7 @@ func (sc *serverConn) serve(conf http2Config) {
 		case res := <-sc.wroteFrameCh:
 			sc.wroteFrame(res)
 		case res := <-sc.readFrameCh:
-			lastFrameTime = sc.srv.now()
+			lastFrameTime = time.Now()
 			// Process any written frames before reading new frames from the client since a
 			// written frame could have triggered a new stream to be started.
 			if sc.writingFrameAsync {
@@ -1077,7 +1073,7 @@ func (sc *serverConn) handlePingTimer(lastFrameReadTime time.Time) {
 	}
 
 	pingAt := lastFrameReadTime.Add(sc.readIdleTimeout)
-	now := sc.srv.now()
+	now := time.Now()
 	if pingAt.After(now) {
 		// We received frames since arming the ping timer.
 		// Reset it for the next possible timeout.
@@ -1141,10 +1137,10 @@ func (sc *serverConn) readPreface() error {
 			errc <- nil
 		}
 	}()
-	timer := sc.srv.newTimer(prefaceTimeout) // TODO: configurable on *Server?
+	timer := time.NewTimer(prefaceTimeout) // TODO: configurable on *Server?
 	defer timer.Stop()
 	select {
-	case <-timer.C():
+	case <-timer.C:
 		return errPrefaceTimeout
 	case err := <-errc:
 		if err == nil {
@@ -1156,10 +1152,6 @@ func (sc *serverConn) readPreface() error {
 	}
 }
 
-var errChanPool = sync.Pool{
-	New: func() interface{} { return make(chan error, 1) },
-}
-
 var writeDataPool = sync.Pool{
 	New: func() interface{} { return new(writeData) },
 }
@@ -1167,7 +1159,7 @@ var writeDataPool = sync.Pool{
 // writeDataFromHandler writes DATA response frames from a handler on
 // the given stream.
 func (sc *serverConn) writeDataFromHandler(stream *stream, data []byte, endStream bool) error {
-	ch := errChanPool.Get().(chan error)
+	ch := sc.srv.state.getErrChan()
 	writeArg := writeDataPool.Get().(*writeData)
 	*writeArg = writeData{stream.id, data, endStream}
 	err := sc.writeFrameFromHandler(FrameWriteRequest{
@@ -1199,7 +1191,7 @@ func (sc *serverConn) writeDataFromHandler(stream *stream, data []byte, endStrea
 			return errStreamClosed
 		}
 	}
-	errChanPool.Put(ch)
+	sc.srv.state.putErrChan(ch)
 	if frameWriteDone {
 		writeDataPool.Put(writeArg)
 	}
@@ -1513,7 +1505,7 @@ func (sc *serverConn) goAway(code ErrCode) {
 
 func (sc *serverConn) shutDownIn(d time.Duration) {
 	sc.serveG.check()
-	sc.shutdownTimer = sc.srv.afterFunc(d, sc.onShutdownTimer)
+	sc.shutdownTimer = time.AfterFunc(d, sc.onShutdownTimer)
 }
 
 func (sc *serverConn) resetStream(se StreamError) {
@@ -2118,7 +2110,7 @@ func (sc *serverConn) processHeaders(f *MetaHeadersFrame) error {
 	// (in Go 1.8), though. That's a more sane option anyway.
 	if sc.hs.ReadTimeout > 0 {
 		sc.conn.SetReadDeadline(time.Time{})
-		st.readDeadline = sc.srv.afterFunc(sc.hs.ReadTimeout, st.onReadTimeout)
+		st.readDeadline = time.AfterFunc(sc.hs.ReadTimeout, st.onReadTimeout)
 	}
 
 	return sc.scheduleHandler(id, rw, req, handler)
@@ -2216,7 +2208,7 @@ func (sc *serverConn) newStream(id, pusherID uint32, state streamState) *stream
 	st.flow.add(sc.initialStreamSendWindowSize)
 	st.inflow.init(sc.initialStreamRecvWindowSize)
 	if sc.hs.WriteTimeout > 0 {
-		st.writeDeadline = sc.srv.afterFunc(sc.hs.WriteTimeout, st.onWriteTimeout)
+		st.writeDeadline = time.AfterFunc(sc.hs.WriteTimeout, st.onWriteTimeout)
 	}
 
 	sc.streams[id] = st
@@ -2405,7 +2397,6 @@ func (sc *serverConn) handlerDone() {
 
 // Run on its own goroutine.
 func (sc *serverConn) runHandler(rw *responseWriter, req *http.Request, handler func(http.ResponseWriter, *http.Request)) {
-	sc.srv.markNewGoroutine()
 	defer sc.sendServeMsg(handlerDoneMsg)
 	didPanic := true
 	defer func() {
@@ -2454,7 +2445,7 @@ func (sc *serverConn) writeHeaders(st *stream, headerData *writeResHeaders) erro
 		// waiting for this frame to be written, so an http.Flush mid-handler
 		// writes out the correct value of keys, before a handler later potentially
 		// mutates it.
-		errc = errChanPool.Get().(chan error)
+		errc = sc.srv.state.getErrChan()
 	}
 	if err := sc.writeFrameFromHandler(FrameWriteRequest{
 		write:  headerData,
@@ -2466,7 +2457,7 @@ func (sc *serverConn) writeHeaders(st *stream, headerData *writeResHeaders) erro
 	if errc != nil {
 		select {
 		case err := <-errc:
-			errChanPool.Put(errc)
+			sc.srv.state.putErrChan(errc)
 			return err
 		case <-sc.doneServing:
 			return errClientDisconnected
@@ -2573,7 +2564,7 @@ func (b *requestBody) Read(p []byte) (n int, err error) {
 	if err == io.EOF {
 		b.sawEOF = true
 	}
-	if b.conn == nil && inTests {
+	if b.conn == nil {
 		return
 	}
 	b.conn.noteBodyReadFromHandler(b.stream, n, err)
@@ -2702,7 +2693,7 @@ func (rws *responseWriterState) writeChunk(p []byte) (n int, err error) {
 		var date string
 		if _, ok := rws.snapHeader["Date"]; !ok {
 			// TODO(bradfitz): be faster here, like net/http? measure.
-			date = rws.conn.srv.now().UTC().Format(http.TimeFormat)
+			date = time.Now().UTC().Format(http.TimeFormat)
 		}
 
 		for _, v := range rws.snapHeader["Trailer"] {
@@ -2824,7 +2815,7 @@ func (rws *responseWriterState) promoteUndeclaredTrailers() {
 
 func (w *responseWriter) SetReadDeadline(deadline time.Time) error {
 	st := w.rws.stream
-	if !deadline.IsZero() && deadline.Before(w.rws.conn.srv.now()) {
+	if !deadline.IsZero() && deadline.Before(time.Now()) {
 		// If we're setting a deadline in the past, reset the stream immediately
 		// so writes after SetWriteDeadline returns will fail.
 		st.onReadTimeout()
@@ -2840,9 +2831,9 @@ func (w *responseWriter) SetReadDeadline(deadline time.Time) error {
 		if deadline.IsZero() {
 			st.readDeadline = nil
 		} else if st.readDeadline == nil {
-			st.readDeadline = sc.srv.afterFunc(deadline.Sub(sc.srv.now()), st.onReadTimeout)
+			st.readDeadline = time.AfterFunc(deadline.Sub(time.Now()), st.onReadTimeout)
 		} else {
-			st.readDeadline.Reset(deadline.Sub(sc.srv.now()))
+			st.readDeadline.Reset(deadline.Sub(time.Now()))
 		}
 	})
 	return nil
@@ -2850,7 +2841,7 @@ func (w *responseWriter) SetReadDeadline(deadline time.Time) error {
 
 func (w *responseWriter) SetWriteDeadline(deadline time.Time) error {
 	st := w.rws.stream
-	if !deadline.IsZero() && deadline.Before(w.rws.conn.srv.now()) {
+	if !deadline.IsZero() && deadline.Before(time.Now()) {
 		// If we're setting a deadline in the past, reset the stream immediately
 		// so writes after SetWriteDeadline returns will fail.
 		st.onWriteTimeout()
@@ -2866,9 +2857,9 @@ func (w *responseWriter) SetWriteDeadline(deadline time.Time) error {
 		if deadline.IsZero() {
 			st.writeDeadline = nil
 		} else if st.writeDeadline == nil {
-			st.writeDeadline = sc.srv.afterFunc(deadline.Sub(sc.srv.now()), st.onWriteTimeout)
+			st.writeDeadline = time.AfterFunc(deadline.Sub(time.Now()), st.onWriteTimeout)
 		} else {
-			st.writeDeadline.Reset(deadline.Sub(sc.srv.now()))
+			st.writeDeadline.Reset(deadline.Sub(time.Now()))
 		}
 	})
 	return nil
@@ -3147,7 +3138,7 @@ func (w *responseWriter) Push(target string, opts *http.PushOptions) error {
 		method: opts.Method,
 		url:    u,
 		header: cloneHeader(opts.Header),
-		done:   errChanPool.Get().(chan error),
+		done:   sc.srv.state.getErrChan(),
 	}
 
 	select {
@@ -3164,7 +3155,7 @@ func (w *responseWriter) Push(target string, opts *http.PushOptions) error {
 	case <-st.cw:
 		return errStreamClosed
 	case err := <-msg.done:
-		errChanPool.Put(msg.done)
+		sc.srv.state.putErrChan(msg.done)
 		return err
 	}
 }

vendor/golang.org/x/net/http2/timer.go

@@ -1,20 +0,0 @@
-// Copyright 2024 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-package http2
-
-import "time"
-
-// A timer is a time.Timer, as an interface which can be replaced in tests.
-type timer = interface {
-	C() <-chan time.Time
-	Reset(d time.Duration) bool
-	Stop() bool
-}
-
-// timeTimer adapts a time.Timer to the timer interface.
-type timeTimer struct {
-	*time.Timer
-}
-
-func (t timeTimer) C() <-chan time.Time { return t.Timer.C }

vendor/golang.org/x/net/http2/transport.go

@@ -9,6 +9,7 @@ package http2
 import (
 	"bufio"
 	"bytes"
+	"compress/flate"
 	"compress/gzip"
 	"context"
 	"crypto/rand"
@@ -193,50 +194,6 @@ type Transport struct {
 
 type transportTestHooks struct {
 	newclientconn func(*ClientConn)
-	group         synctestGroupInterface
-}
-
-func (t *Transport) markNewGoroutine() {
-	if t != nil && t.transportTestHooks != nil {
-		t.transportTestHooks.group.Join()
-	}
-}
-
-func (t *Transport) now() time.Time {
-	if t != nil && t.transportTestHooks != nil {
-		return t.transportTestHooks.group.Now()
-	}
-	return time.Now()
-}
-
-func (t *Transport) timeSince(when time.Time) time.Duration {
-	if t != nil && t.transportTestHooks != nil {
-		return t.now().Sub(when)
-	}
-	return time.Since(when)
-}
-
-// newTimer creates a new time.Timer, or a synthetic timer in tests.
-func (t *Transport) newTimer(d time.Duration) timer {
-	if t.transportTestHooks != nil {
-		return t.transportTestHooks.group.NewTimer(d)
-	}
-	return timeTimer{time.NewTimer(d)}
-}
-
-// afterFunc creates a new time.AfterFunc timer, or a synthetic timer in tests.
-func (t *Transport) afterFunc(d time.Duration, f func()) timer {
-	if t.transportTestHooks != nil {
-		return t.transportTestHooks.group.AfterFunc(d, f)
-	}
-	return timeTimer{time.AfterFunc(d, f)}
-}
-
-func (t *Transport) contextWithTimeout(ctx context.Context, d time.Duration) (context.Context, context.CancelFunc) {
-	if t.transportTestHooks != nil {
-		return t.transportTestHooks.group.ContextWithTimeout(ctx, d)
-	}
-	return context.WithTimeout(ctx, d)
 }
 
 func (t *Transport) maxHeaderListSize() uint32 {
@@ -366,7 +323,7 @@ type ClientConn struct {
 	readerErr  error         // set before readerDone is closed
 
 	idleTimeout time.Duration // or 0 for never
-	idleTimer   timer
+	idleTimer   *time.Timer
 
 	mu               sync.Mutex // guards following
 	cond             *sync.Cond // hold mu; broadcast on flow/closed changes
@@ -399,6 +356,7 @@ type ClientConn struct {
 	readIdleTimeout             time.Duration
 	pingTimeout                 time.Duration
 	extendedConnectAllowed      bool
+	strictMaxConcurrentStreams  bool
 
 	// rstStreamPingsBlocked works around an unfortunate gRPC behavior.
 	// gRPC strictly limits the number of PING frames that it will receive.
@@ -418,11 +376,24 @@ type ClientConn struct {
 	// completely unresponsive connection.
 	pendingResets int
 
+	// readBeforeStreamID is the smallest stream ID that has not been followed by
+	// a frame read from the peer. We use this to determine when a request may
+	// have been sent to a completely unresponsive connection:
+	// If the request ID is less than readBeforeStreamID, then we have had some
+	// indication of life on the connection since sending the request.
+	readBeforeStreamID uint32
+
 	// reqHeaderMu is a 1-element semaphore channel controlling access to sending new requests.
 	// Write to reqHeaderMu to lock it, read from it to unlock.
 	// Lock reqmu BEFORE mu or wmu.
 	reqHeaderMu chan struct{}
 
+	// internalStateHook reports state changes back to the net/http.ClientConn.
+	// Note that this is different from the user state hook registered by
+	// net/http.ClientConn.SetStateHook: The internal hook calls ClientConn,
+	// which calls the user hook.
+	internalStateHook func()
+
 	// wmu is held while writing.
 	// Acquire BEFORE mu when holding both, to avoid blocking mu on network writes.
 	// Only acquire both at the same time when changing peer settings.
@@ -534,14 +505,12 @@ func (cs *clientStream) closeReqBodyLocked() {
 	cs.reqBodyClosed = make(chan struct{})
 	reqBodyClosed := cs.reqBodyClosed
 	go func() {
-		cs.cc.t.markNewGoroutine()
 		cs.reqBody.Close()
 		close(reqBodyClosed)
 	}()
 }
 
 type stickyErrWriter struct {
-	group   synctestGroupInterface
 	conn    net.Conn
 	timeout time.Duration
 	err     *error
@@ -551,7 +520,7 @@ func (sew stickyErrWriter) Write(p []byte) (n int, err error) {
 	if *sew.err != nil {
 		return 0, *sew.err
 	}
-	n, err = writeWithByteTimeout(sew.group, sew.conn, sew.timeout, p)
+	n, err = writeWithByteTimeout(sew.conn, sew.timeout, p)
 	*sew.err = err
 	return n, err
 }
@@ -650,9 +619,9 @@ func (t *Transport) RoundTripOpt(req *http.Request, opt RoundTripOpt) (*http.Res
 				backoff := float64(uint(1) << (uint(retry) - 1))
 				backoff += backoff * (0.1 * mathrand.Float64())
 				d := time.Second * time.Duration(backoff)
-				tm := t.newTimer(d)
+				tm := time.NewTimer(d)
 				select {
-				case <-tm.C():
+				case <-tm.C:
 					t.vlogf("RoundTrip retrying after failure: %v", roundTripErr)
 					continue
 				case <-req.Context().Done():
@@ -699,6 +668,7 @@ var (
 	errClientConnUnusable       = errors.New("http2: client conn not usable")
 	errClientConnNotEstablished = errors.New("http2: client conn could not be established")
 	errClientConnGotGoAway      = errors.New("http2: Transport received Server's graceful shutdown GOAWAY")
+	errClientConnForceClosed    = errors.New("http2: client connection force closed via ClientConn.Close")
 )
 
 // shouldRetryRequest is called by RoundTrip when a request fails to get
@@ -753,7 +723,7 @@ func canRetryError(err error) bool {
 
 func (t *Transport) dialClientConn(ctx context.Context, addr string, singleUse bool) (*ClientConn, error) {
 	if t.transportTestHooks != nil {
-		return t.newClientConn(nil, singleUse)
+		return t.newClientConn(nil, singleUse, nil)
 	}
 	host, _, err := net.SplitHostPort(addr)
 	if err != nil {
@@ -763,7 +733,7 @@ func (t *Transport) dialClientConn(ctx context.Context, addr string, singleUse b
 	if err != nil {
 		return nil, err
 	}
-	return t.newClientConn(tconn, singleUse)
+	return t.newClientConn(tconn, singleUse, nil)
 }
 
 func (t *Transport) newTLSConfig(host string) *tls.Config {
@@ -815,10 +785,10 @@ func (t *Transport) expectContinueTimeout() time.Duration {
 }
 
 func (t *Transport) NewClientConn(c net.Conn) (*ClientConn, error) {
-	return t.newClientConn(c, t.disableKeepAlives())
+	return t.newClientConn(c, t.disableKeepAlives(), nil)
 }
 
-func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, error) {
+func (t *Transport) newClientConn(c net.Conn, singleUse bool, internalStateHook func()) (*ClientConn, error) {
 	conf := configFromTransport(t)
 	cc := &ClientConn{
 		t:                           t,
@@ -829,6 +799,7 @@ func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, erro
 		initialWindowSize:           65535,    // spec default
 		initialStreamRecvWindowSize: conf.MaxUploadBufferPerStream,
 		maxConcurrentStreams:        initialMaxConcurrentStreams, // "infinite", per spec. Use a smaller value until we have received server settings.
+		strictMaxConcurrentStreams:  conf.StrictMaxConcurrentRequests,
 		peerMaxHeaderListSize:       0xffffffffffffffff, // "infinite", per spec. Use 2^64-1 instead.
 		streams:                     make(map[uint32]*clientStream),
 		singleUse:                   singleUse,
@@ -838,14 +809,12 @@ func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, erro
 		pingTimeout:                 conf.PingTimeout,
 		pings:                       make(map[[8]byte]chan struct{}),
 		reqHeaderMu:                 make(chan struct{}, 1),
-		lastActive:                  t.now(),
+		lastActive:                  time.Now(),
+		internalStateHook:           internalStateHook,
 	}
-	var group synctestGroupInterface
 	if t.transportTestHooks != nil {
-		t.markNewGoroutine()
 		t.transportTestHooks.newclientconn(cc)
 		c = cc.tconn
-		group = t.group
 	}
 	if VerboseLogs {
 		t.vlogf("http2: Transport creating client conn %p to %v", cc, c.RemoteAddr())
@@ -857,7 +826,6 @@ func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, erro
 	// TODO: adjust this writer size to account for frame size +
 	// MTU + crypto/tls record padding.
 	cc.bw = bufio.NewWriter(stickyErrWriter{
-		group:   group,
 		conn:    c,
 		timeout: conf.WriteByteTimeout,
 		err:     &cc.werr,
@@ -906,7 +874,7 @@ func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, erro
 	// Start the idle timer after the connection is fully initialized.
 	if d := t.idleConnTimeout(); d != 0 {
 		cc.idleTimeout = d
-		cc.idleTimer = t.afterFunc(d, cc.onIdleTimeout)
+		cc.idleTimer = time.AfterFunc(d, cc.onIdleTimeout)
 	}
 
 	go cc.readLoop()
@@ -917,7 +885,7 @@ func (cc *ClientConn) healthCheck() {
 	pingTimeout := cc.pingTimeout
 	// We don't need to periodically ping in the health check, because the readLoop of ClientConn will
 	// trigger the healthCheck again if there is no frame received.
-	ctx, cancel := cc.t.contextWithTimeout(context.Background(), pingTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), pingTimeout)
 	defer cancel()
 	cc.vlogf("http2: Transport sending health check")
 	err := cc.Ping(ctx)
@@ -1067,7 +1035,7 @@ func (cc *ClientConn) idleStateLocked() (st clientConnIdleState) {
 		return
 	}
 	var maxConcurrentOkay bool
-	if cc.t.StrictMaxConcurrentStreams {
+	if cc.strictMaxConcurrentStreams {
 		// We'll tell the caller we can take a new request to
 		// prevent the caller from dialing a new TCP
 		// connection, but then we'll block later before
@@ -1083,10 +1051,7 @@ func (cc *ClientConn) idleStateLocked() (st clientConnIdleState) {
 		maxConcurrentOkay = cc.currentRequestCountLocked() < int(cc.maxConcurrentStreams)
 	}
 
-	st.canTakeNewRequest = cc.goAway == nil && !cc.closed && !cc.closing && maxConcurrentOkay &&
+	st.canTakeNewRequest = maxConcurrentOkay && cc.isUsableLocked()
-		!cc.doNotReuse &&
-		int64(cc.nextStreamID)+2*int64(cc.pendingRequests) < math.MaxInt32 &&
-		!cc.tooIdleLocked()
 
 	// If this connection has never been used for a request and is closed,
 	// then let it take a request (which will fail).
@@ -1102,6 +1067,31 @@ func (cc *ClientConn) idleStateLocked() (st clientConnIdleState) {
 	return
 }
 
+func (cc *ClientConn) isUsableLocked() bool {
+	return cc.goAway == nil &&
+		!cc.closed &&
+		!cc.closing &&
+		!cc.doNotReuse &&
+		int64(cc.nextStreamID)+2*int64(cc.pendingRequests) < math.MaxInt32 &&
+		!cc.tooIdleLocked()
+}
+
+// canReserveLocked reports whether a net/http.ClientConn can reserve a slot on this conn.
+//
+// This follows slightly different rules than clientConnIdleState.canTakeNewRequest.
+// We only permit reservations up to the conn's concurrency limit.
+// This differs from ClientConn.ReserveNewRequest, which permits reservations
+// past the limit when StrictMaxConcurrentStreams is set.
+func (cc *ClientConn) canReserveLocked() bool {
+	if cc.currentRequestCountLocked() >= int(cc.maxConcurrentStreams) {
+		return false
+	}
+	if !cc.isUsableLocked() {
+		return false
+	}
+	return true
+}
+
 // currentRequestCountLocked reports the number of concurrency slots currently in use,
 // including active streams, reserved slots, and reset streams waiting for acknowledgement.
 func (cc *ClientConn) currentRequestCountLocked() int {
@@ -1113,6 +1103,14 @@ func (cc *ClientConn) canTakeNewRequestLocked() bool {
 	return st.canTakeNewRequest
 }
 
+// availableLocked reports the number of concurrency slots available.
+func (cc *ClientConn) availableLocked() int {
+	if !cc.canTakeNewRequestLocked() {
+		return 0
+	}
+	return max(0, int(cc.maxConcurrentStreams)-cc.currentRequestCountLocked())
+}
+
 // tooIdleLocked reports whether this connection has been been sitting idle
 // for too much wall time.
 func (cc *ClientConn) tooIdleLocked() bool {
@@ -1120,7 +1118,7 @@ func (cc *ClientConn) tooIdleLocked() bool {
 	// times are compared based on their wall time. We don't want
 	// to reuse a connection that's been sitting idle during
 	// VM/laptop suspend if monotonic time was also frozen.
-	return cc.idleTimeout != 0 && !cc.lastIdle.IsZero() && cc.t.timeSince(cc.lastIdle.Round(0)) > cc.idleTimeout
+	return cc.idleTimeout != 0 && !cc.lastIdle.IsZero() && time.Since(cc.lastIdle.Round(0)) > cc.idleTimeout
 }
 
 // onIdleTimeout is called from a time.AfterFunc goroutine. It will
@@ -1137,6 +1135,7 @@ func (cc *ClientConn) closeConn() {
 	t := time.AfterFunc(250*time.Millisecond, cc.forceCloseConn)
 	defer t.Stop()
 	cc.tconn.Close()
+	cc.maybeCallStateHook()
 }
 
 // A tls.Conn.Close can hang for a long time if the peer is unresponsive.
@@ -1186,7 +1185,6 @@ func (cc *ClientConn) Shutdown(ctx context.Context) error {
 	done := make(chan struct{})
 	cancelled := false // guarded by cc.mu
 	go func() {
-		cc.t.markNewGoroutine()
 		cc.mu.Lock()
 		defer cc.mu.Unlock()
 		for {
@@ -1257,8 +1255,7 @@ func (cc *ClientConn) closeForError(err error) {
 //
 // In-flight requests are interrupted. For a graceful shutdown, use Shutdown instead.
 func (cc *ClientConn) Close() error {
-	err := errors.New("http2: client connection force closed via ClientConn.Close")
+	cc.closeForError(errClientConnForceClosed)
-	cc.closeForError(err)
 	return nil
 }
 
@@ -1427,7 +1424,6 @@ func (cc *ClientConn) roundTrip(req *http.Request, streamf func(*clientStream))
 //
 // It sends the request and performs post-request cleanup (closing Request.Body, etc.).
 func (cs *clientStream) doRequest(req *http.Request, streamf func(*clientStream)) {
-	cs.cc.t.markNewGoroutine()
 	err := cs.writeRequest(req, streamf)
 	cs.cleanupWriteRequest(err)
 }
@@ -1558,9 +1554,9 @@ func (cs *clientStream) writeRequest(req *http.Request, streamf func(*clientStre
 	var respHeaderTimer <-chan time.Time
 	var respHeaderRecv chan struct{}
 	if d := cc.responseHeaderTimeout(); d != 0 {
-		timer := cc.t.newTimer(d)
+		timer := time.NewTimer(d)
 		defer timer.Stop()
-		respHeaderTimer = timer.C()
+		respHeaderTimer = timer.C
 		respHeaderRecv = cs.respHeaderRecv
 	}
 	// Wait until the peer half-closes its end of the stream,
@@ -1665,6 +1661,8 @@ func (cs *clientStream) cleanupWriteRequest(err error) {
 	}
 	bodyClosed := cs.reqBodyClosed
 	closeOnIdle := cc.singleUse || cc.doNotReuse || cc.t.disableKeepAlives() || cc.goAway != nil
+	// Have we read any frames from the connection since sending this request?
+	readSinceStream := cc.readBeforeStreamID > cs.ID
 	cc.mu.Unlock()
 	if mustCloseBody {
 		cs.reqBody.Close()
@@ -1696,8 +1694,10 @@ func (cs *clientStream) cleanupWriteRequest(err error) {
 				//
 				// This could be due to the server becoming unresponsive.
 				// To avoid sending too many requests on a dead connection,
-				// we let the request continue to consume a concurrency slot
+				// if we haven't read any frames from the connection since
-				// until we can confirm the server is still responding.
+				// sending this request, we let it continue to consume
+				// a concurrency slot until we can confirm the server is
+				// still responding.
 				// We do this by sending a PING frame along with the RST_STREAM
 				// (unless a ping is already in flight).
 				//
@@ -1708,7 +1708,7 @@ func (cs *clientStream) cleanupWriteRequest(err error) {
 				// because it's short lived and will probably be closed before
 				// we get the ping response.
 				ping := false
-				if !closeOnIdle {
+				if !closeOnIdle && !readSinceStream {
 					cc.mu.Lock()
 					// rstStreamPingsBlocked works around a gRPC behavior:
 					// see comment on the field for details.
@@ -1742,6 +1742,7 @@ func (cs *clientStream) cleanupWriteRequest(err error) {
 	}
 
 	close(cs.donec)
+	cc.maybeCallStateHook()
 }
 
 // awaitOpenSlotForStreamLocked waits until len(streams) < maxConcurrentStreams.
@@ -1753,7 +1754,7 @@ func (cc *ClientConn) awaitOpenSlotForStreamLocked(cs *clientStream) error {
 			// Return a fatal error which aborts the retry loop.
 			return errClientConnNotEstablished
 		}
-		cc.lastActive = cc.t.now()
+		cc.lastActive = time.Now()
 		if cc.closed || !cc.canTakeNewRequestLocked() {
 			return errClientConnUnusable
 		}
@@ -2092,10 +2093,10 @@ func (cc *ClientConn) forgetStreamID(id uint32) {
 	if len(cc.streams) != slen-1 {
 		panic("forgetting unknown stream id")
 	}
-	cc.lastActive = cc.t.now()
+	cc.lastActive = time.Now()
 	if len(cc.streams) == 0 && cc.idleTimer != nil {
 		cc.idleTimer.Reset(cc.idleTimeout)
-		cc.lastIdle = cc.t.now()
+		cc.lastIdle = time.Now()
 	}
 	// Wake up writeRequestBody via clientStream.awaitFlowControl and
 	// wake up RoundTrip if there is a pending request.
@@ -2121,7 +2122,6 @@ type clientConnReadLoop struct {
 
 // readLoop runs in its own goroutine and reads and dispatches frames.
 func (cc *ClientConn) readLoop() {
-	cc.t.markNewGoroutine()
 	rl := &clientConnReadLoop{cc: cc}
 	defer rl.cleanup()
 	cc.readerErr = rl.run()
@@ -2188,9 +2188,9 @@ func (rl *clientConnReadLoop) cleanup() {
 	if cc.idleTimeout > 0 && unusedWaitTime > cc.idleTimeout {
 		unusedWaitTime = cc.idleTimeout
 	}
-	idleTime := cc.t.now().Sub(cc.lastActive)
+	idleTime := time.Now().Sub(cc.lastActive)
 	if atomic.LoadUint32(&cc.atomicReused) == 0 && idleTime < unusedWaitTime && !cc.closedOnIdle {
-		cc.idleTimer = cc.t.afterFunc(unusedWaitTime-idleTime, func() {
+		cc.idleTimer = time.AfterFunc(unusedWaitTime-idleTime, func() {
 			cc.t.connPool().MarkDead(cc)
 		})
 	} else {
@@ -2250,9 +2250,9 @@ func (rl *clientConnReadLoop) run() error {
 	cc := rl.cc
 	gotSettings := false
 	readIdleTimeout := cc.readIdleTimeout
-	var t timer
+	var t *time.Timer
 	if readIdleTimeout != 0 {
-		t = cc.t.afterFunc(readIdleTimeout, cc.healthCheck)
+		t = time.AfterFunc(readIdleTimeout, cc.healthCheck)
 	}
 	for {
 		f, err := cc.fr.ReadFrame()
@@ -2795,6 +2795,7 @@ func (rl *clientConnReadLoop) streamByID(id uint32, headerOrData bool) *clientSt
 		// See comment on ClientConn.rstStreamPingsBlocked for details.
 		rl.cc.rstStreamPingsBlocked = false
 	}
+	rl.cc.readBeforeStreamID = rl.cc.nextStreamID
 	cs := rl.cc.streams[id]
 	if cs != nil && !cs.readAborted {
 		return cs
@@ -2845,6 +2846,7 @@ func (rl *clientConnReadLoop) processSettings(f *SettingsFrame) error {
 
 func (rl *clientConnReadLoop) processSettingsNoWrite(f *SettingsFrame) error {
 	cc := rl.cc
+	defer cc.maybeCallStateHook()
 	cc.mu.Lock()
 	defer cc.mu.Unlock()
 
@@ -2998,7 +3000,6 @@ func (cc *ClientConn) Ping(ctx context.Context) error {
 	var pingError error
 	errc := make(chan struct{})
 	go func() {
-		cc.t.markNewGoroutine()
 		cc.wmu.Lock()
 		defer cc.wmu.Unlock()
 		if pingError = cc.fr.WritePing(false, p); pingError != nil {
@@ -3026,6 +3027,7 @@ func (cc *ClientConn) Ping(ctx context.Context) error {
 func (rl *clientConnReadLoop) processPing(f *PingFrame) error {
 	if f.IsAck() {
 		cc := rl.cc
+		defer cc.maybeCallStateHook()
 		cc.mu.Lock()
 		defer cc.mu.Unlock()
 		// If ack, notify listener if any
@@ -3128,35 +3130,102 @@ type erringRoundTripper struct{ err error }
 func (rt erringRoundTripper) RoundTripErr() error                             { return rt.err }
 func (rt erringRoundTripper) RoundTrip(*http.Request) (*http.Response, error) { return nil, rt.err }
 
+var errConcurrentReadOnResBody = errors.New("http2: concurrent read on response body")
+
 // gzipReader wraps a response body so it can lazily
-// call gzip.NewReader on the first call to Read
+// get gzip.Reader from the pool on the first call to Read.
+// After Close is called it puts gzip.Reader to the pool immediately
+// if there is no Read in progress or later when Read completes.
 type gzipReader struct {
 	_    incomparable
 	body io.ReadCloser // underlying Response.Body
-	zr   *gzip.Reader  // lazily-initialized gzip reader
+	mu   sync.Mutex    // guards zr and zerr
-	zerr error         // sticky error
+	zr   *gzip.Reader  // stores gzip reader from the pool between reads
+	zerr error         // sticky gzip reader init error or sentinel value to detect concurrent read and read after close
+}
+
+type eofReader struct{}
+
+func (eofReader) Read([]byte) (int, error) { return 0, io.EOF }
+func (eofReader) ReadByte() (byte, error)  { return 0, io.EOF }
+
+var gzipPool = sync.Pool{New: func() any { return new(gzip.Reader) }}
+
+// gzipPoolGet gets a gzip.Reader from the pool and resets it to read from r.
+func gzipPoolGet(r io.Reader) (*gzip.Reader, error) {
+	zr := gzipPool.Get().(*gzip.Reader)
+	if err := zr.Reset(r); err != nil {
+		gzipPoolPut(zr)
+		return nil, err
+	}
+	return zr, nil
+}
+
+// gzipPoolPut puts a gzip.Reader back into the pool.
+func gzipPoolPut(zr *gzip.Reader) {
+	// Reset will allocate bufio.Reader if we pass it anything
+	// other than a flate.Reader, so ensure that it's getting one.
+	var r flate.Reader = eofReader{}
+	zr.Reset(r)
+	gzipPool.Put(zr)
+}
+
+// acquire returns a gzip.Reader for reading response body.
+// The reader must be released after use.
+func (gz *gzipReader) acquire() (*gzip.Reader, error) {
+	gz.mu.Lock()
+	defer gz.mu.Unlock()
+	if gz.zerr != nil {
+		return nil, gz.zerr
+	}
+	if gz.zr == nil {
+		gz.zr, gz.zerr = gzipPoolGet(gz.body)
+		if gz.zerr != nil {
+			return nil, gz.zerr
+		}
+	}
+	ret := gz.zr
+	gz.zr, gz.zerr = nil, errConcurrentReadOnResBody
+	return ret, nil
+}
+
+// release returns the gzip.Reader to the pool if Close was called during Read.
+func (gz *gzipReader) release(zr *gzip.Reader) {
+	gz.mu.Lock()
+	defer gz.mu.Unlock()
+	if gz.zerr == errConcurrentReadOnResBody {
+		gz.zr, gz.zerr = zr, nil
+	} else { // fs.ErrClosed
+		gzipPoolPut(zr)
+	}
+}
+
+// close returns the gzip.Reader to the pool immediately or
+// signals release to do so after Read completes.
+func (gz *gzipReader) close() {
+	gz.mu.Lock()
+	defer gz.mu.Unlock()
+	if gz.zerr == nil && gz.zr != nil {
+		gzipPoolPut(gz.zr)
+		gz.zr = nil
+	}
+	gz.zerr = fs.ErrClosed
 }
 
 func (gz *gzipReader) Read(p []byte) (n int, err error) {
-	if gz.zerr != nil {
+	zr, err := gz.acquire()
-		return 0, gz.zerr
-	}
-	if gz.zr == nil {
-		gz.zr, err = gzip.NewReader(gz.body)
 	if err != nil {
-			gz.zerr = err
 		return 0, err
 	}
-	}
+	defer gz.release(zr)
-	return gz.zr.Read(p)
+
+	return zr.Read(p)
 }
 
 func (gz *gzipReader) Close() error {
-	if err := gz.body.Close(); err != nil {
+	gz.close()
-		return err
+
-	}
+	return gz.body.Close()
-	gz.zerr = fs.ErrClosed
-	return nil
 }
 
 type errorReader struct{ err error }
@@ -3182,9 +3251,13 @@ func registerHTTPSProtocol(t *http.Transport, rt noDialH2RoundTripper) (err erro
 }
 
 // noDialH2RoundTripper is a RoundTripper which only tries to complete the request
-// if there's already has a cached connection to the host.
+// if there's already a cached connection to the host.
 // (The field is exported so it can be accessed via reflect from net/http; tested
 // by TestNoDialH2RoundTripperType)
+//
+// A noDialH2RoundTripper is registered with http1.Transport.RegisterProtocol,
+// and the http1.Transport can use type assertions to call non-RoundTrip methods on it.
+// This lets us expose, for example, NewClientConn to net/http.
 type noDialH2RoundTripper struct{ *Transport }
 
 func (rt noDialH2RoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
@@ -3195,6 +3268,85 @@ func (rt noDialH2RoundTripper) RoundTrip(req *http.Request) (*http.Response, err
 	return res, err
 }
 
+func (rt noDialH2RoundTripper) NewClientConn(conn net.Conn, internalStateHook func()) (http.RoundTripper, error) {
+	tr := rt.Transport
+	cc, err := tr.newClientConn(conn, tr.disableKeepAlives(), internalStateHook)
+	if err != nil {
+		return nil, err
+	}
+
+	// RoundTrip should block when the conn is at its concurrency limit,
+	// not return an error. Setting strictMaxConcurrentStreams enables this.
+	cc.strictMaxConcurrentStreams = true
+
+	return netHTTPClientConn{cc}, nil
+}
+
+// netHTTPClientConn wraps ClientConn and implements the interface net/http expects from
+// the RoundTripper returned by NewClientConn.
+type netHTTPClientConn struct {
+	cc *ClientConn
+}
+
+func (cc netHTTPClientConn) RoundTrip(req *http.Request) (*http.Response, error) {
+	return cc.cc.RoundTrip(req)
+}
+
+func (cc netHTTPClientConn) Close() error {
+	return cc.cc.Close()
+}
+
+func (cc netHTTPClientConn) Err() error {
+	cc.cc.mu.Lock()
+	defer cc.cc.mu.Unlock()
+	if cc.cc.closed {
+		return errors.New("connection closed")
+	}
+	return nil
+}
+
+func (cc netHTTPClientConn) Reserve() error {
+	defer cc.cc.maybeCallStateHook()
+	cc.cc.mu.Lock()
+	defer cc.cc.mu.Unlock()
+	if !cc.cc.canReserveLocked() {
+		return errors.New("connection is unavailable")
+	}
+	cc.cc.streamsReserved++
+	return nil
+}
+
+func (cc netHTTPClientConn) Release() {
+	defer cc.cc.maybeCallStateHook()
+	cc.cc.mu.Lock()
+	defer cc.cc.mu.Unlock()
+	// We don't complain if streamsReserved is 0.
+	//
+	// This is consistent with RoundTrip: both Release and RoundTrip will
+	// consume a reservation iff one exists.
+	if cc.cc.streamsReserved > 0 {
+		cc.cc.streamsReserved--
+	}
+}
+
+func (cc netHTTPClientConn) Available() int {
+	cc.cc.mu.Lock()
+	defer cc.cc.mu.Unlock()
+	return cc.cc.availableLocked()
+}
+
+func (cc netHTTPClientConn) InFlight() int {
+	cc.cc.mu.Lock()
+	defer cc.cc.mu.Unlock()
+	return cc.cc.currentRequestCountLocked()
+}
+
+func (cc *ClientConn) maybeCallStateHook() {
+	if cc.internalStateHook != nil {
+		cc.internalStateHook()
+	}
+}
+
 func (t *Transport) idleConnTimeout() time.Duration {
 	// to keep things backwards compatible, we use non-zero values of
 	// IdleConnTimeout, followed by using the IdleConnTimeout on the underlying
@@ -3228,7 +3380,7 @@ func traceGotConn(req *http.Request, cc *ClientConn, reused bool) {
 	cc.mu.Lock()
 	ci.WasIdle = len(cc.streams) == 0 && reused
 	if ci.WasIdle && !cc.lastActive.IsZero() {
-		ci.IdleTime = cc.t.timeSince(cc.lastActive)
+		ci.IdleTime = time.Since(cc.lastActive)
 	}
 	cc.mu.Unlock()
 

vendor/golang.org/x/net/http2/writesched.go

@@ -42,6 +42,8 @@ type OpenStreamOptions struct {
 	// PusherID is zero if the stream was initiated by the client. Otherwise,
 	// PusherID names the stream that pushed the newly opened stream.
 	PusherID uint32
+	// priority is used to set the priority of the newly opened stream.
+	priority PriorityParam
 }
 
 // FrameWriteRequest is a request to write a frame.
@@ -183,45 +185,75 @@ func (wr *FrameWriteRequest) replyToWriter(err error) {
 }
 
 // writeQueue is used by implementations of WriteScheduler.
+//
+// Each writeQueue contains a queue of FrameWriteRequests, meant to store all
+// FrameWriteRequests associated with a given stream. This is implemented as a
+// two-stage queue: currQueue[currPos:] and nextQueue. Removing an item is done
+// by incrementing currPos of currQueue. Adding an item is done by appending it
+// to the nextQueue. If currQueue is empty when trying to remove an item, we
+// can swap currQueue and nextQueue to remedy the situation.
+// This two-stage queue is analogous to the use of two lists in Okasaki's
+// purely functional queue but without the overhead of reversing the list when
+// swapping stages.
+//
+// writeQueue also contains prev and next, this can be used by implementations
+// of WriteScheduler to construct data structures that represent the order of
+// writing between different streams (e.g. circular linked list).
 type writeQueue struct {
-	s          []FrameWriteRequest
+	currQueue []FrameWriteRequest
+	nextQueue []FrameWriteRequest
+	currPos   int
+
 	prev, next *writeQueue
 }
 
-func (q *writeQueue) empty() bool { return len(q.s) == 0 }
+func (q *writeQueue) empty() bool {
+	return (len(q.currQueue) - q.currPos + len(q.nextQueue)) == 0
+}
 
 func (q *writeQueue) push(wr FrameWriteRequest) {
-	q.s = append(q.s, wr)
+	q.nextQueue = append(q.nextQueue, wr)
 }
 
 func (q *writeQueue) shift() FrameWriteRequest {
-	if len(q.s) == 0 {
+	if q.empty() {
 		panic("invalid use of queue")
 	}
-	wr := q.s[0]
+	if q.currPos >= len(q.currQueue) {
-	// TODO: less copy-happy queue.
+		q.currQueue, q.currPos, q.nextQueue = q.nextQueue, 0, q.currQueue[:0]
-	copy(q.s, q.s[1:])
+	}
-	q.s[len(q.s)-1] = FrameWriteRequest{}
+	wr := q.currQueue[q.currPos]
-	q.s = q.s[:len(q.s)-1]
+	q.currQueue[q.currPos] = FrameWriteRequest{}
+	q.currPos++
 	return wr
 }
 
+func (q *writeQueue) peek() *FrameWriteRequest {
+	if q.currPos < len(q.currQueue) {
+		return &q.currQueue[q.currPos]
+	}
+	if len(q.nextQueue) > 0 {
+		return &q.nextQueue[0]
+	}
+	return nil
+}
+
 // consume consumes up to n bytes from q.s[0]. If the frame is
 // entirely consumed, it is removed from the queue. If the frame
 // is partially consumed, the frame is kept with the consumed
 // bytes removed. Returns true iff any bytes were consumed.
 func (q *writeQueue) consume(n int32) (FrameWriteRequest, bool) {
-	if len(q.s) == 0 {
+	if q.empty() {
 		return FrameWriteRequest{}, false
 	}
-	consumed, rest, numresult := q.s[0].Consume(n)
+	consumed, rest, numresult := q.peek().Consume(n)
 	switch numresult {
 	case 0:
 		return FrameWriteRequest{}, false
 	case 1:
 		q.shift()
 	case 2:
-		q.s[0] = rest
+		*q.peek() = rest
 	}
 	return consumed, true
 }
@@ -230,10 +262,15 @@ type writeQueuePool []*writeQueue
 
 // put inserts an unused writeQueue into the pool.
 func (p *writeQueuePool) put(q *writeQueue) {
-	for i := range q.s {
+	for i := range q.currQueue {
-		q.s[i] = FrameWriteRequest{}
+		q.currQueue[i] = FrameWriteRequest{}
 	}
-	q.s = q.s[:0]
+	for i := range q.nextQueue {
+		q.nextQueue[i] = FrameWriteRequest{}
+	}
+	q.currQueue = q.currQueue[:0]
+	q.nextQueue = q.nextQueue[:0]
+	q.currPos = 0
 	*p = append(*p, q)
 }
 

vendor/golang.org/x/net/http2/writesched_priority_rfc7540.go

@@ -11,7 +11,7 @@ import (
 )
 
 // RFC 7540, Section 5.3.5: the default weight is 16.
-const priorityDefaultWeight = 15 // 16 = 15 + 1
+const priorityDefaultWeightRFC7540 = 15 // 16 = 15 + 1
 
 // PriorityWriteSchedulerConfig configures a priorityWriteScheduler.
 type PriorityWriteSchedulerConfig struct {
@@ -66,8 +66,8 @@ func NewPriorityWriteScheduler(cfg *PriorityWriteSchedulerConfig) WriteScheduler
 		}
 	}
 
-	ws := &priorityWriteScheduler{
+	ws := &priorityWriteSchedulerRFC7540{
-		nodes:                make(map[uint32]*priorityNode),
+		nodes:                make(map[uint32]*priorityNodeRFC7540),
 		maxClosedNodesInTree: cfg.MaxClosedNodesInTree,
 		maxIdleNodesInTree:   cfg.MaxIdleNodesInTree,
 		enableWriteThrottle:  cfg.ThrottleOutOfOrderWrites,
@@ -81,32 +81,32 @@ func NewPriorityWriteScheduler(cfg *PriorityWriteSchedulerConfig) WriteScheduler
 	return ws
 }
 
-type priorityNodeState int
+type priorityNodeStateRFC7540 int
 
 const (
-	priorityNodeOpen priorityNodeState = iota
+	priorityNodeOpenRFC7540 priorityNodeStateRFC7540 = iota
-	priorityNodeClosed
+	priorityNodeClosedRFC7540
-	priorityNodeIdle
+	priorityNodeIdleRFC7540
 )
 
-// priorityNode is a node in an HTTP/2 priority tree.
+// priorityNodeRFC7540 is a node in an HTTP/2 priority tree.
 // Each node is associated with a single stream ID.
 // See RFC 7540, Section 5.3.
-type priorityNode struct {
+type priorityNodeRFC7540 struct {
 	q            writeQueue               // queue of pending frames to write
 	id           uint32                   // id of the stream, or 0 for the root of the tree
 	weight       uint8                    // the actual weight is weight+1, so the value is in [1,256]
-	state        priorityNodeState // open | closed | idle
+	state        priorityNodeStateRFC7540 // open | closed | idle
 	bytes        int64                    // number of bytes written by this node, or 0 if closed
 	subtreeBytes int64                    // sum(node.bytes) of all nodes in this subtree
 
 	// These links form the priority tree.
-	parent     *priorityNode
+	parent     *priorityNodeRFC7540
-	kids       *priorityNode // start of the kids list
+	kids       *priorityNodeRFC7540 // start of the kids list
-	prev, next *priorityNode // doubly-linked list of siblings
+	prev, next *priorityNodeRFC7540 // doubly-linked list of siblings
 }
 
-func (n *priorityNode) setParent(parent *priorityNode) {
+func (n *priorityNodeRFC7540) setParent(parent *priorityNodeRFC7540) {
 	if n == parent {
 		panic("setParent to self")
 	}
@@ -141,7 +141,7 @@ func (n *priorityNode) setParent(parent *priorityNode) {
 	}
 }
 
-func (n *priorityNode) addBytes(b int64) {
+func (n *priorityNodeRFC7540) addBytes(b int64) {
 	n.bytes += b
 	for ; n != nil; n = n.parent {
 		n.subtreeBytes += b
@@ -154,7 +154,7 @@ func (n *priorityNode) addBytes(b int64) {
 //
 // f(n, openParent) takes two arguments: the node to visit, n, and a bool that is true
 // if any ancestor p of n is still open (ignoring the root node).
-func (n *priorityNode) walkReadyInOrder(openParent bool, tmp *[]*priorityNode, f func(*priorityNode, bool) bool) bool {
+func (n *priorityNodeRFC7540) walkReadyInOrder(openParent bool, tmp *[]*priorityNodeRFC7540, f func(*priorityNodeRFC7540, bool) bool) bool {
 	if !n.q.empty() && f(n, openParent) {
 		return true
 	}
@@ -165,7 +165,7 @@ func (n *priorityNode) walkReadyInOrder(openParent bool, tmp *[]*priorityNode, f
 	// Don't consider the root "open" when updating openParent since
 	// we can't send data frames on the root stream (only control frames).
 	if n.id != 0 {
-		openParent = openParent || (n.state == priorityNodeOpen)
+		openParent = openParent || (n.state == priorityNodeOpenRFC7540)
 	}
 
 	// Common case: only one kid or all kids have the same weight.
@@ -195,7 +195,7 @@ func (n *priorityNode) walkReadyInOrder(openParent bool, tmp *[]*priorityNode, f
 		*tmp = append(*tmp, n.kids)
 		n.kids.setParent(nil)
 	}
-	sort.Sort(sortPriorityNodeSiblings(*tmp))
+	sort.Sort(sortPriorityNodeSiblingsRFC7540(*tmp))
 	for i := len(*tmp) - 1; i >= 0; i-- {
 		(*tmp)[i].setParent(n) // setParent inserts at the head of n.kids
 	}
@@ -207,15 +207,15 @@ func (n *priorityNode) walkReadyInOrder(openParent bool, tmp *[]*priorityNode, f
 	return false
 }
 
-type sortPriorityNodeSiblings []*priorityNode
+type sortPriorityNodeSiblingsRFC7540 []*priorityNodeRFC7540
 
-func (z sortPriorityNodeSiblings) Len() int      { return len(z) }
+func (z sortPriorityNodeSiblingsRFC7540) Len() int      { return len(z) }
-func (z sortPriorityNodeSiblings) Swap(i, k int) { z[i], z[k] = z[k], z[i] }
+func (z sortPriorityNodeSiblingsRFC7540) Swap(i, k int) { z[i], z[k] = z[k], z[i] }
-func (z sortPriorityNodeSiblings) Less(i, k int) bool {
+func (z sortPriorityNodeSiblingsRFC7540) Less(i, k int) bool {
 	// Prefer the subtree that has sent fewer bytes relative to its weight.
 	// See sections 5.3.2 and 5.3.4.
-	wi, bi := float64(z[i].weight+1), float64(z[i].subtreeBytes)
+	wi, bi := float64(z[i].weight)+1, float64(z[i].subtreeBytes)
-	wk, bk := float64(z[k].weight+1), float64(z[k].subtreeBytes)
+	wk, bk := float64(z[k].weight)+1, float64(z[k].subtreeBytes)
 	if bi == 0 && bk == 0 {
 		return wi >= wk
 	}
@@ -225,13 +225,13 @@ func (z sortPriorityNodeSiblings) Less(i, k int) bool {
 	return bi/bk <= wi/wk
 }
 
-type priorityWriteScheduler struct {
+type priorityWriteSchedulerRFC7540 struct {
 	// root is the root of the priority tree, where root.id = 0.
 	// The root queues control frames that are not associated with any stream.
-	root priorityNode
+	root priorityNodeRFC7540
 
 	// nodes maps stream ids to priority tree nodes.
-	nodes map[uint32]*priorityNode
+	nodes map[uint32]*priorityNodeRFC7540
 
 	// maxID is the maximum stream id in nodes.
 	maxID uint32
@@ -239,7 +239,7 @@ type priorityWriteScheduler struct {
 	// lists of nodes that have been closed or are idle, but are kept in
 	// the tree for improved prioritization. When the lengths exceed either
 	// maxClosedNodesInTree or maxIdleNodesInTree, old nodes are discarded.
-	closedNodes, idleNodes []*priorityNode
+	closedNodes, idleNodes []*priorityNodeRFC7540
 
 	// From the config.
 	maxClosedNodesInTree int
@@ -248,19 +248,19 @@ type priorityWriteScheduler struct {
 	enableWriteThrottle  bool
 
 	// tmp is scratch space for priorityNode.walkReadyInOrder to reduce allocations.
-	tmp []*priorityNode
+	tmp []*priorityNodeRFC7540
 
 	// pool of empty queues for reuse.
 	queuePool writeQueuePool
 }
 
-func (ws *priorityWriteScheduler) OpenStream(streamID uint32, options OpenStreamOptions) {
+func (ws *priorityWriteSchedulerRFC7540) OpenStream(streamID uint32, options OpenStreamOptions) {
 	// The stream may be currently idle but cannot be opened or closed.
 	if curr := ws.nodes[streamID]; curr != nil {
-		if curr.state != priorityNodeIdle {
+		if curr.state != priorityNodeIdleRFC7540 {
 			panic(fmt.Sprintf("stream %d already opened", streamID))
 		}
-		curr.state = priorityNodeOpen
+		curr.state = priorityNodeOpenRFC7540
 		return
 	}
 
@@ -272,11 +272,11 @@ func (ws *priorityWriteScheduler) OpenStream(streamID uint32, options OpenStream
 	if parent == nil {
 		parent = &ws.root
 	}
-	n := &priorityNode{
+	n := &priorityNodeRFC7540{
 		q:      *ws.queuePool.get(),
 		id:     streamID,
-		weight: priorityDefaultWeight,
+		weight: priorityDefaultWeightRFC7540,
-		state:  priorityNodeOpen,
+		state:  priorityNodeOpenRFC7540,
 	}
 	n.setParent(parent)
 	ws.nodes[streamID] = n
@@ -285,24 +285,23 @@ func (ws *priorityWriteScheduler) OpenStream(streamID uint32, options OpenStream
 	}
 }
 
-func (ws *priorityWriteScheduler) CloseStream(streamID uint32) {
+func (ws *priorityWriteSchedulerRFC7540) CloseStream(streamID uint32) {
 	if streamID == 0 {
 		panic("violation of WriteScheduler interface: cannot close stream 0")
 	}
 	if ws.nodes[streamID] == nil {
 		panic(fmt.Sprintf("violation of WriteScheduler interface: unknown stream %d", streamID))
 	}
-	if ws.nodes[streamID].state != priorityNodeOpen {
+	if ws.nodes[streamID].state != priorityNodeOpenRFC7540 {
 		panic(fmt.Sprintf("violation of WriteScheduler interface: stream %d already closed", streamID))
 	}
 
 	n := ws.nodes[streamID]
-	n.state = priorityNodeClosed
+	n.state = priorityNodeClosedRFC7540
 	n.addBytes(-n.bytes)
 
 	q := n.q
 	ws.queuePool.put(&q)
-	n.q.s = nil
 	if ws.maxClosedNodesInTree > 0 {
 		ws.addClosedOrIdleNode(&ws.closedNodes, ws.maxClosedNodesInTree, n)
 	} else {
@@ -310,7 +309,7 @@ func (ws *priorityWriteScheduler) CloseStream(streamID uint32) {
 	}
 }
 
-func (ws *priorityWriteScheduler) AdjustStream(streamID uint32, priority PriorityParam) {
+func (ws *priorityWriteSchedulerRFC7540) AdjustStream(streamID uint32, priority PriorityParam) {
 	if streamID == 0 {
 		panic("adjustPriority on root")
 	}
@@ -324,11 +323,11 @@ func (ws *priorityWriteScheduler) AdjustStream(streamID uint32, priority Priorit
 			return
 		}
 		ws.maxID = streamID
-		n = &priorityNode{
+		n = &priorityNodeRFC7540{
 			q:      *ws.queuePool.get(),
 			id:     streamID,
-			weight: priorityDefaultWeight,
+			weight: priorityDefaultWeightRFC7540,
-			state:  priorityNodeIdle,
+			state:  priorityNodeIdleRFC7540,
 		}
 		n.setParent(&ws.root)
 		ws.nodes[streamID] = n
@@ -340,7 +339,7 @@ func (ws *priorityWriteScheduler) AdjustStream(streamID uint32, priority Priorit
 	parent := ws.nodes[priority.StreamDep]
 	if parent == nil {
 		n.setParent(&ws.root)
-		n.weight = priorityDefaultWeight
+		n.weight = priorityDefaultWeightRFC7540
 		return
 	}
 
@@ -381,8 +380,8 @@ func (ws *priorityWriteScheduler) AdjustStream(streamID uint32, priority Priorit
 	n.weight = priority.Weight
 }
 
-func (ws *priorityWriteScheduler) Push(wr FrameWriteRequest) {
+func (ws *priorityWriteSchedulerRFC7540) Push(wr FrameWriteRequest) {
-	var n *priorityNode
+	var n *priorityNodeRFC7540
 	if wr.isControl() {
 		n = &ws.root
 	} else {
@@ -401,8 +400,8 @@ func (ws *priorityWriteScheduler) Push(wr FrameWriteRequest) {
 	n.q.push(wr)
 }
 
-func (ws *priorityWriteScheduler) Pop() (wr FrameWriteRequest, ok bool) {
+func (ws *priorityWriteSchedulerRFC7540) Pop() (wr FrameWriteRequest, ok bool) {
-	ws.root.walkReadyInOrder(false, &ws.tmp, func(n *priorityNode, openParent bool) bool {
+	ws.root.walkReadyInOrder(false, &ws.tmp, func(n *priorityNodeRFC7540, openParent bool) bool {
 		limit := int32(math.MaxInt32)
 		if openParent {
 			limit = ws.writeThrottleLimit
@@ -428,7 +427,7 @@ func (ws *priorityWriteScheduler) Pop() (wr FrameWriteRequest, ok bool) {
 	return wr, ok
 }
 
-func (ws *priorityWriteScheduler) addClosedOrIdleNode(list *[]*priorityNode, maxSize int, n *priorityNode) {
+func (ws *priorityWriteSchedulerRFC7540) addClosedOrIdleNode(list *[]*priorityNodeRFC7540, maxSize int, n *priorityNodeRFC7540) {
 	if maxSize == 0 {
 		return
 	}
@@ -442,7 +441,7 @@ func (ws *priorityWriteScheduler) addClosedOrIdleNode(list *[]*priorityNode, max
 	*list = append(*list, n)
 }
 
-func (ws *priorityWriteScheduler) removeNode(n *priorityNode) {
+func (ws *priorityWriteSchedulerRFC7540) removeNode(n *priorityNodeRFC7540) {
 	for n.kids != nil {
 		n.kids.setParent(n.parent)
 	}

vendor/golang.org/x/net/http2/writesched_priority_rfc9218.go

@@ -0,0 +1,224 @@
+// Copyright 2025 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package http2
+
+import (
+	"fmt"
+	"math"
+)
+
+type streamMetadata struct {
+	location *writeQueue
+	priority PriorityParam
+}
+
+type priorityWriteSchedulerRFC9218 struct {
+	// control contains control frames (SETTINGS, PING, etc.).
+	control writeQueue
+
+	// heads contain the head of a circular list of streams.
+	// We put these heads within a nested array that represents urgency and
+	// incremental, as defined in
+	// https://www.rfc-editor.org/rfc/rfc9218.html#name-priority-parameters.
+	// 8 represents u=0 up to u=7, and 2 represents i=false and i=true.
+	heads [8][2]*writeQueue
+
+	// streams contains a mapping between each stream ID and their metadata, so
+	// we can quickly locate them when needing to, for example, adjust their
+	// priority.
+	streams map[uint32]streamMetadata
+
+	// queuePool are empty queues for reuse.
+	queuePool writeQueuePool
+
+	// prioritizeIncremental is used to determine whether we should prioritize
+	// incremental streams or not, when urgency is the same in a given Pop()
+	// call.
+	prioritizeIncremental bool
+
+	// priorityUpdateBuf is used to buffer the most recent PRIORITY_UPDATE we
+	// receive per https://www.rfc-editor.org/rfc/rfc9218.html#name-the-priority_update-frame.
+	priorityUpdateBuf struct {
+		// streamID being 0 means that the buffer is empty. This is a safe
+		// assumption as PRIORITY_UPDATE for stream 0 is a PROTOCOL_ERROR.
+		streamID uint32
+		priority PriorityParam
+	}
+}
+
+func newPriorityWriteSchedulerRFC9218() WriteScheduler {
+	ws := &priorityWriteSchedulerRFC9218{
+		streams: make(map[uint32]streamMetadata),
+	}
+	return ws
+}
+
+func (ws *priorityWriteSchedulerRFC9218) OpenStream(streamID uint32, opt OpenStreamOptions) {
+	if ws.streams[streamID].location != nil {
+		panic(fmt.Errorf("stream %d already opened", streamID))
+	}
+	if streamID == ws.priorityUpdateBuf.streamID {
+		ws.priorityUpdateBuf.streamID = 0
+		opt.priority = ws.priorityUpdateBuf.priority
+	}
+	q := ws.queuePool.get()
+	ws.streams[streamID] = streamMetadata{
+		location: q,
+		priority: opt.priority,
+	}
+
+	u, i := opt.priority.urgency, opt.priority.incremental
+	if ws.heads[u][i] == nil {
+		ws.heads[u][i] = q
+		q.next = q
+		q.prev = q
+	} else {
+		// Queues are stored in a ring.
+		// Insert the new stream before ws.head, putting it at the end of the list.
+		q.prev = ws.heads[u][i].prev
+		q.next = ws.heads[u][i]
+		q.prev.next = q
+		q.next.prev = q
+	}
+}
+
+func (ws *priorityWriteSchedulerRFC9218) CloseStream(streamID uint32) {
+	metadata := ws.streams[streamID]
+	q, u, i := metadata.location, metadata.priority.urgency, metadata.priority.incremental
+	if q == nil {
+		return
+	}
+	if q.next == q {
+		// This was the only open stream.
+		ws.heads[u][i] = nil
+	} else {
+		q.prev.next = q.next
+		q.next.prev = q.prev
+		if ws.heads[u][i] == q {
+			ws.heads[u][i] = q.next
+		}
+	}
+	delete(ws.streams, streamID)
+	ws.queuePool.put(q)
+}
+
+func (ws *priorityWriteSchedulerRFC9218) AdjustStream(streamID uint32, priority PriorityParam) {
+	metadata := ws.streams[streamID]
+	q, u, i := metadata.location, metadata.priority.urgency, metadata.priority.incremental
+	if q == nil {
+		ws.priorityUpdateBuf.streamID = streamID
+		ws.priorityUpdateBuf.priority = priority
+		return
+	}
+
+	// Remove stream from current location.
+	if q.next == q {
+		// This was the only open stream.
+		ws.heads[u][i] = nil
+	} else {
+		q.prev.next = q.next
+		q.next.prev = q.prev
+		if ws.heads[u][i] == q {
+			ws.heads[u][i] = q.next
+		}
+	}
+
+	// Insert stream to the new queue.
+	u, i = priority.urgency, priority.incremental
+	if ws.heads[u][i] == nil {
+		ws.heads[u][i] = q
+		q.next = q
+		q.prev = q
+	} else {
+		// Queues are stored in a ring.
+		// Insert the new stream before ws.head, putting it at the end of the list.
+		q.prev = ws.heads[u][i].prev
+		q.next = ws.heads[u][i]
+		q.prev.next = q
+		q.next.prev = q
+	}
+
+	// Update the metadata.
+	ws.streams[streamID] = streamMetadata{
+		location: q,
+		priority: priority,
+	}
+}
+
+func (ws *priorityWriteSchedulerRFC9218) Push(wr FrameWriteRequest) {
+	if wr.isControl() {
+		ws.control.push(wr)
+		return
+	}
+	q := ws.streams[wr.StreamID()].location
+	if q == nil {
+		// This is a closed stream.
+		// wr should not be a HEADERS or DATA frame.
+		// We push the request onto the control queue.
+		if wr.DataSize() > 0 {
+			panic("add DATA on non-open stream")
+		}
+		ws.control.push(wr)
+		return
+	}
+	q.push(wr)
+}
+
+func (ws *priorityWriteSchedulerRFC9218) Pop() (FrameWriteRequest, bool) {
+	// Control and RST_STREAM frames first.
+	if !ws.control.empty() {
+		return ws.control.shift(), true
+	}
+
+	// On the next Pop(), we want to prioritize incremental if we prioritized
+	// non-incremental request of the same urgency this time. Vice-versa.
+	// i.e. when there are incremental and non-incremental requests at the same
+	// priority, we give 50% of our bandwidth to the incremental ones in
+	// aggregate and 50% to the first non-incremental one (since
+	// non-incremental streams do not use round-robin writes).
+	ws.prioritizeIncremental = !ws.prioritizeIncremental
+
+	// Always prioritize lowest u (i.e. highest urgency level).
+	for u := range ws.heads {
+		for i := range ws.heads[u] {
+			// When we want to prioritize incremental, we try to pop i=true
+			// first before i=false when u is the same.
+			if ws.prioritizeIncremental {
+				i = (i + 1) % 2
+			}
+			q := ws.heads[u][i]
+			if q == nil {
+				continue
+			}
+			for {
+				if wr, ok := q.consume(math.MaxInt32); ok {
+					if i == 1 {
+						// For incremental streams, we update head to q.next so
+						// we can round-robin between multiple streams that can
+						// immediately benefit from partial writes.
+						ws.heads[u][i] = q.next
+					} else {
+						// For non-incremental streams, we try to finish one to
+						// completion rather than doing round-robin. However,
+						// we update head here so that if q.consume() is !ok
+						// (e.g. the stream has no more frame to consume), head
+						// is updated to the next q that has frames to consume
+						// on future iterations. This way, we do not prioritize
+						// writing to unavailable stream on next Pop() calls,
+						// preventing head-of-line blocking.
+						ws.heads[u][i] = q
+					}
+					return wr, true
+				}
+				q = q.next
+				if q == ws.heads[u][i] {
+					break
+				}
+			}
+
+		}
+	}
+	return FrameWriteRequest{}, false
+}

vendor/golang.org/x/net/http2/writesched_roundrobin.go

@@ -25,7 +25,7 @@ type roundRobinWriteScheduler struct {
 }
 
 // newRoundRobinWriteScheduler constructs a new write scheduler.
-// The round robin scheduler priorizes control frames
+// The round robin scheduler prioritizes control frames
 // like SETTINGS and PING over DATA frames.
 // When there are no control frames to send, it performs a round-robin
 // selection from the ready streams.

vendor/golang.org/x/net/internal/httpcommon/request.go

@@ -51,7 +51,7 @@ type EncodeHeadersParam struct {
 	DefaultUserAgent string
 }
 
-// EncodeHeadersParam is the result of EncodeHeaders.
+// EncodeHeadersResult is the result of EncodeHeaders.
 type EncodeHeadersResult struct {
 	HasBody     bool
 	HasTrailers bool
@@ -399,7 +399,7 @@ type ServerRequestResult struct {
 
 	// If the request should be rejected, this is a short string suitable for passing
 	// to the http2 package's CountError function.
-	// It might be a bit odd to return errors this way rather than returing an error,
+	// It might be a bit odd to return errors this way rather than returning an error,
 	// but this ensures we don't forget to include a CountError reason.
 	InvalidReason string
 }

vendor/golang.org/x/net/internal/socks/socks.go

@@ -297,7 +297,7 @@ func (up *UsernamePassword) Authenticate(ctx context.Context, rw io.ReadWriter,
 		b = append(b, up.Username...)
 		b = append(b, byte(len(up.Password)))
 		b = append(b, up.Password...)
-		// TODO(mikio): handle IO deadlines and cancelation if
+		// TODO(mikio): handle IO deadlines and cancellation if
 		// necessary
 		if _, err := rw.Write(b); err != nil {
 			return err

vendor/golang.org/x/net/nettest/conntest.go

@@ -142,7 +142,7 @@ func testPingPong(t *testing.T, c1, c2 net.Conn) {
 }
 
 // testRacyRead tests that it is safe to mutate the input Read buffer
-// immediately after cancelation has occurred.
+// immediately after cancellation has occurred.
 func testRacyRead(t *testing.T, c1, c2 net.Conn) {
 	go chunkedCopy(c2, rand.New(rand.NewSource(0)))
 
@@ -170,7 +170,7 @@ func testRacyRead(t *testing.T, c1, c2 net.Conn) {
 }
 
 // testRacyWrite tests that it is safe to mutate the input Write buffer
-// immediately after cancelation has occurred.
+// immediately after cancellation has occurred.
 func testRacyWrite(t *testing.T, c1, c2 net.Conn) {
 	go chunkedCopy(io.Discard, c2)
 
@@ -318,7 +318,7 @@ func testCloseTimeout(t *testing.T, c1, c2 net.Conn) {
 	defer wg.Wait()
 	wg.Add(3)
 
-	// Test for cancelation upon connection closure.
+	// Test for cancellation upon connection closure.
 	c1.SetDeadline(neverTimeout)
 	go func() {
 		defer wg.Done()

vendor/golang.org/x/net/trace/events.go

@@ -58,8 +58,8 @@ func RenderEvents(w http.ResponseWriter, req *http.Request, sensitive bool) {
 		Buckets: buckets,
 	}
 
-	data.Families = make([]string, 0, len(families))
 	famMu.RLock()
+	data.Families = make([]string, 0, len(families))
 	for name := range families {
 		data.Families = append(data.Families, name)
 	}
@@ -508,7 +508,7 @@ const eventsHTML = `
 	<tr class="first">
 		<td class="when">{{$el.When}}</td>
 		<td class="elapsed">{{$el.ElapsedTime}}</td>
-		<td>{{$el.Title}}
+		<td>{{$el.Title}}</td>
 	</tr>
 	{{if $.Expanded}}
 	<tr>

vendor/golang.org/x/net/websocket/hybi.go

@@ -440,6 +440,7 @@ func hybiClientHandshake(config *Config, br *bufio.Reader, bw *bufio.Writer) (er
 	if err != nil {
 		return err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode != 101 {
 		return ErrBadStatus
 	}

vendor/golang.org/x/sync/errgroup/errgroup.go

@@ -3,7 +3,7 @@
 // license that can be found in the LICENSE file.
 
 // Package errgroup provides synchronization, error propagation, and Context
-// cancelation for groups of goroutines working on subtasks of a common task.
+// cancellation for groups of goroutines working on subtasks of a common task.
 //
 // [errgroup.Group] is related to [sync.WaitGroup] but adds handling of tasks
 // returning errors.
@@ -12,8 +12,6 @@ package errgroup
 import (
 	"context"
 	"fmt"
-	"runtime"
-	"runtime/debug"
 	"sync"
 )
 
@@ -33,10 +31,6 @@ type Group struct {
 
 	errOnce sync.Once
 	err     error
-
-	mu         sync.Mutex
-	panicValue any  // = PanicError | PanicValue; non-nil if some Group.Go goroutine panicked.
-	abnormal   bool // some Group.Go goroutine terminated abnormally (panic or goexit).
 }
 
 func (g *Group) done() {
@@ -56,80 +50,47 @@ func WithContext(ctx context.Context) (*Group, context.Context) {
 	return &Group{cancel: cancel}, ctx
 }
 
-// Wait blocks until all function calls from the Go method have returned
+// Wait blocks until all function calls from the Go method have returned, then
-// normally, then returns the first non-nil error (if any) from them.
+// returns the first non-nil error (if any) from them.
-//
-// If any of the calls panics, Wait panics with a [PanicValue];
-// and if any of them calls [runtime.Goexit], Wait calls runtime.Goexit.
 func (g *Group) Wait() error {
 	g.wg.Wait()
 	if g.cancel != nil {
 		g.cancel(g.err)
 	}
-	if g.panicValue != nil {
-		panic(g.panicValue)
-	}
-	if g.abnormal {
-		runtime.Goexit()
-	}
 	return g.err
 }
 
 // Go calls the given function in a new goroutine.
-// The first call to Go must happen before a Wait.
-// It blocks until the new goroutine can be added without the number of
-// active goroutines in the group exceeding the configured limit.
 //
+// The first call to Go must happen before a Wait.
 // It blocks until the new goroutine can be added without the number of
 // goroutines in the group exceeding the configured limit.
 //
-// The first goroutine in the group that returns a non-nil error, panics, or
+// The first goroutine in the group that returns a non-nil error will
-// invokes [runtime.Goexit] will cancel the associated Context, if any.
+// cancel the associated Context, if any. The error will be returned
+// by Wait.
 func (g *Group) Go(f func() error) {
 	if g.sem != nil {
 		g.sem <- token{}
 	}
 
-	g.add(f)
-}
-
-func (g *Group) add(f func() error) {
 	g.wg.Add(1)
 	go func() {
 		defer g.done()
-		normalReturn := false
-		defer func() {
-			if normalReturn {
-				return
-			}
-			v := recover()
-			g.mu.Lock()
-			defer g.mu.Unlock()
-			if !g.abnormal {
-				if g.cancel != nil {
-					g.cancel(g.err)
-				}
-				g.abnormal = true
-			}
-			if v != nil && g.panicValue == nil {
-				switch v := v.(type) {
-				case error:
-					g.panicValue = PanicError{
-						Recovered: v,
-						Stack:     debug.Stack(),
-					}
-				default:
-					g.panicValue = PanicValue{
-						Recovered: v,
-						Stack:     debug.Stack(),
-					}
-				}
-			}
-		}()
 
-		err := f()
+		// It is tempting to propagate panics from f()
-		normalReturn = true
+		// up to the goroutine that calls Wait, but
-		if err != nil {
+		// it creates more problems than it solves:
+		// - it delays panics arbitrarily,
+		//   making bugs harder to detect;
+		// - it turns f's panic stack into a mere value,
+		//   hiding it from crash-monitoring tools;
+		// - it risks deadlocks that hide the panic entirely,
+		//   if f's panic leaves the program in a state
+		//   that prevents the Wait call from being reached.
+		// See #53757, #74275, #74304, #74306.
+
+		if err := f(); err != nil {
 			g.errOnce.Do(func() {
 				g.err = err
 				if g.cancel != nil {
@@ -154,7 +115,19 @@ func (g *Group) TryGo(f func() error) bool {
 		}
 	}
 
-	g.add(f)
+	g.wg.Add(1)
+	go func() {
+		defer g.done()
+
+		if err := f(); err != nil {
+			g.errOnce.Do(func() {
+				g.err = err
+				if g.cancel != nil {
+					g.cancel(g.err)
+				}
+			})
+		}
+	}()
 	return true
 }
 
@@ -171,38 +144,8 @@ func (g *Group) SetLimit(n int) {
 		g.sem = nil
 		return
 	}
-	if len(g.sem) != 0 {
+	if active := len(g.sem); active != 0 {
-		panic(fmt.Errorf("errgroup: modify limit while %v goroutines in the group are still active", len(g.sem)))
+		panic(fmt.Errorf("errgroup: modify limit while %v goroutines in the group are still active", active))
 	}
 	g.sem = make(chan token, n)
 }
-
-// PanicError wraps an error recovered from an unhandled panic
-// when calling a function passed to Go or TryGo.
-type PanicError struct {
-	Recovered error
-	Stack     []byte // result of call to [debug.Stack]
-}
-
-func (p PanicError) Error() string {
-	// A Go Error method conventionally does not include a stack dump, so omit it
-	// here. (Callers who care can extract it from the Stack field.)
-	return fmt.Sprintf("recovered from errgroup.Group: %v", p.Recovered)
-}
-
-func (p PanicError) Unwrap() error { return p.Recovered }
-
-// PanicValue wraps a value that does not implement the error interface,
-// recovered from an unhandled panic when calling a function passed to Go or
-// TryGo.
-type PanicValue struct {
-	Recovered any
-	Stack     []byte // result of call to [debug.Stack]
-}
-
-func (p PanicValue) String() string {
-	if len(p.Stack) > 0 {
-		return fmt.Sprintf("recovered from errgroup.Group: %v\n%s", p.Recovered, p.Stack)
-	}
-	return fmt.Sprintf("recovered from errgroup.Group: %v", p.Recovered)
-}

vendor/golang.org/x/sys/cpu/cpu_arm64.go

@@ -47,7 +47,7 @@ func archInit() {
 	switch runtime.GOOS {
 	case "freebsd":
 		readARM64Registers()
-	case "linux", "netbsd", "openbsd":
+	case "linux", "netbsd", "openbsd", "windows":
 		doinit()
 	default:
 		// Many platforms don't seem to allow reading these registers.

vendor/golang.org/x/sys/cpu/cpu_arm64.s

@@ -9,31 +9,27 @@
 // func getisar0() uint64
 TEXT ·getisar0(SB),NOSPLIT,$0-8
 	// get Instruction Set Attributes 0 into x0
-	// mrs x0, ID_AA64ISAR0_EL1 = d5380600
+	MRS	ID_AA64ISAR0_EL1, R0
-	WORD	$0xd5380600
 	MOVD	R0, ret+0(FP)
 	RET
 
 // func getisar1() uint64
 TEXT ·getisar1(SB),NOSPLIT,$0-8
 	// get Instruction Set Attributes 1 into x0
-	// mrs x0, ID_AA64ISAR1_EL1 = d5380620
+	MRS	ID_AA64ISAR1_EL1, R0
-	WORD	$0xd5380620
 	MOVD	R0, ret+0(FP)
 	RET
 
 // func getpfr0() uint64
 TEXT ·getpfr0(SB),NOSPLIT,$0-8
 	// get Processor Feature Register 0 into x0
-	// mrs x0, ID_AA64PFR0_EL1 = d5380400
+	MRS	ID_AA64PFR0_EL1, R0
-	WORD	$0xd5380400
 	MOVD	R0, ret+0(FP)
 	RET
 
 // func getzfr0() uint64
 TEXT ·getzfr0(SB),NOSPLIT,$0-8
 	// get SVE Feature Register 0 into x0
-	// mrs	x0, ID_AA64ZFR0_EL1 = d5380480
+	MRS	ID_AA64ZFR0_EL1, R0
-	WORD $0xd5380480
 	MOVD	R0, ret+0(FP)
 	RET

vendor/golang.org/x/sys/cpu/cpu_other_arm64.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build !linux && !netbsd && !openbsd && arm64
+//go:build !linux && !netbsd && !openbsd && !windows && arm64
 
 package cpu
 

vendor/golang.org/x/sys/cpu/cpu_windows_arm64.go

@@ -0,0 +1,42 @@
+// Copyright 2026 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cpu
+
+import (
+	"golang.org/x/sys/windows"
+)
+
+func doinit() {
+	// set HasASIMD and HasFP to true as per
+	// https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170#base-requirements
+	//
+	// The ARM64 version of Windows always presupposes that it's running on an ARMv8 or later architecture.
+	// Both floating-point and NEON support are presumed to be present in hardware.
+	//
+	ARM64.HasASIMD = true
+	ARM64.HasFP = true
+
+	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) {
+		ARM64.HasAES = true
+		ARM64.HasPMULL = true
+		ARM64.HasSHA1 = true
+		ARM64.HasSHA2 = true
+	}
+	ARM64.HasSHA3 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SHA3_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasCRC32 = windows.IsProcessorFeaturePresent(windows.PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasSHA512 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SHA512_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasATOMICS = windows.IsProcessorFeaturePresent(windows.PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE)
+	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE) {
+		ARM64.HasASIMDDP = true
+		ARM64.HasASIMDRDM = true
+	}
+	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE) {
+		ARM64.HasLRCPC = true
+		ARM64.HasSM3 = true
+	}
+	ARM64.HasSVE = windows.IsProcessorFeaturePresent(windows.PF_ARM_SVE_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasSVE2 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SVE2_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasJSCVT = windows.IsProcessorFeaturePresent(windows.PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE)
+}

vendor/golang.org/x/sys/cpu/cpu_x86.go

@@ -64,6 +64,80 @@ func initOptions() {
 
 func archInit() {
 
+	// From internal/cpu
+	const (
+		// eax bits
+		cpuid_AVXVNNI = 1 << 4
+
+		// ecx bits
+		cpuid_SSE3            = 1 << 0
+		cpuid_PCLMULQDQ       = 1 << 1
+		cpuid_AVX512VBMI      = 1 << 1
+		cpuid_AVX512VBMI2     = 1 << 6
+		cpuid_SSSE3           = 1 << 9
+		cpuid_AVX512GFNI      = 1 << 8
+		cpuid_AVX512VAES      = 1 << 9
+		cpuid_AVX512VNNI      = 1 << 11
+		cpuid_AVX512BITALG    = 1 << 12
+		cpuid_FMA             = 1 << 12
+		cpuid_AVX512VPOPCNTDQ = 1 << 14
+		cpuid_SSE41           = 1 << 19
+		cpuid_SSE42           = 1 << 20
+		cpuid_POPCNT          = 1 << 23
+		cpuid_AES             = 1 << 25
+		cpuid_OSXSAVE         = 1 << 27
+		cpuid_AVX             = 1 << 28
+
+		// "Extended Feature Flag" bits returned in EBX for CPUID EAX=0x7 ECX=0x0
+		cpuid_BMI1     = 1 << 3
+		cpuid_AVX2     = 1 << 5
+		cpuid_BMI2     = 1 << 8
+		cpuid_ERMS     = 1 << 9
+		cpuid_AVX512F  = 1 << 16
+		cpuid_AVX512DQ = 1 << 17
+		cpuid_ADX      = 1 << 19
+		cpuid_AVX512CD = 1 << 28
+		cpuid_SHA      = 1 << 29
+		cpuid_AVX512BW = 1 << 30
+		cpuid_AVX512VL = 1 << 31
+
+		// "Extended Feature Flag" bits returned in ECX for CPUID EAX=0x7 ECX=0x0
+		cpuid_AVX512_VBMI      = 1 << 1
+		cpuid_AVX512_VBMI2     = 1 << 6
+		cpuid_GFNI             = 1 << 8
+		cpuid_AVX512VPCLMULQDQ = 1 << 10
+		cpuid_AVX512_BITALG    = 1 << 12
+
+		// edx bits
+		cpuid_FSRM = 1 << 4
+		// edx bits for CPUID 0x80000001
+		cpuid_RDTSCP = 1 << 27
+	)
+	// Additional constants not in internal/cpu
+	const (
+		// eax=1: edx
+		cpuid_SSE2 = 1 << 26
+		// eax=1: ecx
+		cpuid_CX16   = 1 << 13
+		cpuid_RDRAND = 1 << 30
+		// eax=7,ecx=0: ebx
+		cpuid_RDSEED     = 1 << 18
+		cpuid_AVX512IFMA = 1 << 21
+		cpuid_AVX512PF   = 1 << 26
+		cpuid_AVX512ER   = 1 << 27
+		// eax=7,ecx=0: edx
+		cpuid_AVX5124VNNIW = 1 << 2
+		cpuid_AVX5124FMAPS = 1 << 3
+		cpuid_AMXBF16      = 1 << 22
+		cpuid_AMXTile      = 1 << 24
+		cpuid_AMXInt8      = 1 << 25
+		// eax=7,ecx=1: eax
+		cpuid_AVX512BF16 = 1 << 5
+		cpuid_AVXIFMA    = 1 << 23
+		// eax=7,ecx=1: edx
+		cpuid_AVXVNNIInt8 = 1 << 4
+	)
+
 	Initialized = true
 
 	maxID, _, _, _ := cpuid(0, 0)
@@ -73,90 +147,90 @@ func archInit() {
 	}
 
 	_, _, ecx1, edx1 := cpuid(1, 0)
-	X86.HasSSE2 = isSet(26, edx1)
+	X86.HasSSE2 = isSet(edx1, cpuid_SSE2)
 
-	X86.HasSSE3 = isSet(0, ecx1)
+	X86.HasSSE3 = isSet(ecx1, cpuid_SSE3)
-	X86.HasPCLMULQDQ = isSet(1, ecx1)
+	X86.HasPCLMULQDQ = isSet(ecx1, cpuid_PCLMULQDQ)
-	X86.HasSSSE3 = isSet(9, ecx1)
+	X86.HasSSSE3 = isSet(ecx1, cpuid_SSSE3)
-	X86.HasFMA = isSet(12, ecx1)
+	X86.HasFMA = isSet(ecx1, cpuid_FMA)
-	X86.HasCX16 = isSet(13, ecx1)
+	X86.HasCX16 = isSet(ecx1, cpuid_CX16)
-	X86.HasSSE41 = isSet(19, ecx1)
+	X86.HasSSE41 = isSet(ecx1, cpuid_SSE41)
-	X86.HasSSE42 = isSet(20, ecx1)
+	X86.HasSSE42 = isSet(ecx1, cpuid_SSE42)
-	X86.HasPOPCNT = isSet(23, ecx1)
+	X86.HasPOPCNT = isSet(ecx1, cpuid_POPCNT)
-	X86.HasAES = isSet(25, ecx1)
+	X86.HasAES = isSet(ecx1, cpuid_AES)
-	X86.HasOSXSAVE = isSet(27, ecx1)
+	X86.HasOSXSAVE = isSet(ecx1, cpuid_OSXSAVE)
-	X86.HasRDRAND = isSet(30, ecx1)
+	X86.HasRDRAND = isSet(ecx1, cpuid_RDRAND)
 
 	var osSupportsAVX, osSupportsAVX512 bool
 	// For XGETBV, OSXSAVE bit is required and sufficient.
 	if X86.HasOSXSAVE {
 		eax, _ := xgetbv()
 		// Check if XMM and YMM registers have OS support.
-		osSupportsAVX = isSet(1, eax) && isSet(2, eax)
+		osSupportsAVX = isSet(eax, 1<<1) && isSet(eax, 1<<2)
 
 		if runtime.GOOS == "darwin" {
 			// Darwin requires special AVX512 checks, see cpu_darwin_x86.go
 			osSupportsAVX512 = osSupportsAVX && darwinSupportsAVX512()
 		} else {
 			// Check if OPMASK and ZMM registers have OS support.
-			osSupportsAVX512 = osSupportsAVX && isSet(5, eax) && isSet(6, eax) && isSet(7, eax)
+			osSupportsAVX512 = osSupportsAVX && isSet(eax, 1<<5) && isSet(eax, 1<<6) && isSet(eax, 1<<7)
 		}
 	}
 
-	X86.HasAVX = isSet(28, ecx1) && osSupportsAVX
+	X86.HasAVX = isSet(ecx1, cpuid_AVX) && osSupportsAVX
 
 	if maxID < 7 {
 		return
 	}
 
 	eax7, ebx7, ecx7, edx7 := cpuid(7, 0)
-	X86.HasBMI1 = isSet(3, ebx7)
+	X86.HasBMI1 = isSet(ebx7, cpuid_BMI1)
-	X86.HasAVX2 = isSet(5, ebx7) && osSupportsAVX
+	X86.HasAVX2 = isSet(ebx7, cpuid_AVX2) && osSupportsAVX
-	X86.HasBMI2 = isSet(8, ebx7)
+	X86.HasBMI2 = isSet(ebx7, cpuid_BMI2)
-	X86.HasERMS = isSet(9, ebx7)
+	X86.HasERMS = isSet(ebx7, cpuid_ERMS)
-	X86.HasRDSEED = isSet(18, ebx7)
+	X86.HasRDSEED = isSet(ebx7, cpuid_RDSEED)
-	X86.HasADX = isSet(19, ebx7)
+	X86.HasADX = isSet(ebx7, cpuid_ADX)
 
-	X86.HasAVX512 = isSet(16, ebx7) && osSupportsAVX512 // Because avx-512 foundation is the core required extension
+	X86.HasAVX512 = isSet(ebx7, cpuid_AVX512F) && osSupportsAVX512 // Because avx-512 foundation is the core required extension
 	if X86.HasAVX512 {
 		X86.HasAVX512F = true
-		X86.HasAVX512CD = isSet(28, ebx7)
+		X86.HasAVX512CD = isSet(ebx7, cpuid_AVX512CD)
-		X86.HasAVX512ER = isSet(27, ebx7)
+		X86.HasAVX512ER = isSet(ebx7, cpuid_AVX512ER)
-		X86.HasAVX512PF = isSet(26, ebx7)
+		X86.HasAVX512PF = isSet(ebx7, cpuid_AVX512PF)
-		X86.HasAVX512VL = isSet(31, ebx7)
+		X86.HasAVX512VL = isSet(ebx7, cpuid_AVX512VL)
-		X86.HasAVX512BW = isSet(30, ebx7)
+		X86.HasAVX512BW = isSet(ebx7, cpuid_AVX512BW)
-		X86.HasAVX512DQ = isSet(17, ebx7)
+		X86.HasAVX512DQ = isSet(ebx7, cpuid_AVX512DQ)
-		X86.HasAVX512IFMA = isSet(21, ebx7)
+		X86.HasAVX512IFMA = isSet(ebx7, cpuid_AVX512IFMA)
-		X86.HasAVX512VBMI = isSet(1, ecx7)
+		X86.HasAVX512VBMI = isSet(ecx7, cpuid_AVX512_VBMI)
-		X86.HasAVX5124VNNIW = isSet(2, edx7)
+		X86.HasAVX5124VNNIW = isSet(edx7, cpuid_AVX5124VNNIW)
-		X86.HasAVX5124FMAPS = isSet(3, edx7)
+		X86.HasAVX5124FMAPS = isSet(edx7, cpuid_AVX5124FMAPS)
-		X86.HasAVX512VPOPCNTDQ = isSet(14, ecx7)
+		X86.HasAVX512VPOPCNTDQ = isSet(ecx7, cpuid_AVX512VPOPCNTDQ)
-		X86.HasAVX512VPCLMULQDQ = isSet(10, ecx7)
+		X86.HasAVX512VPCLMULQDQ = isSet(ecx7, cpuid_AVX512VPCLMULQDQ)
-		X86.HasAVX512VNNI = isSet(11, ecx7)
+		X86.HasAVX512VNNI = isSet(ecx7, cpuid_AVX512VNNI)
-		X86.HasAVX512GFNI = isSet(8, ecx7)
+		X86.HasAVX512GFNI = isSet(ecx7, cpuid_AVX512GFNI)
-		X86.HasAVX512VAES = isSet(9, ecx7)
+		X86.HasAVX512VAES = isSet(ecx7, cpuid_AVX512VAES)
-		X86.HasAVX512VBMI2 = isSet(6, ecx7)
+		X86.HasAVX512VBMI2 = isSet(ecx7, cpuid_AVX512VBMI2)
-		X86.HasAVX512BITALG = isSet(12, ecx7)
+		X86.HasAVX512BITALG = isSet(ecx7, cpuid_AVX512BITALG)
 	}
 
-	X86.HasAMXTile = isSet(24, edx7)
+	X86.HasAMXTile = isSet(edx7, cpuid_AMXTile)
-	X86.HasAMXInt8 = isSet(25, edx7)
+	X86.HasAMXInt8 = isSet(edx7, cpuid_AMXInt8)
-	X86.HasAMXBF16 = isSet(22, edx7)
+	X86.HasAMXBF16 = isSet(edx7, cpuid_AMXBF16)
 
 	// These features depend on the second level of extended features.
 	if eax7 >= 1 {
 		eax71, _, _, edx71 := cpuid(7, 1)
 		if X86.HasAVX512 {
-			X86.HasAVX512BF16 = isSet(5, eax71)
+			X86.HasAVX512BF16 = isSet(eax71, cpuid_AVX512BF16)
 		}
 		if X86.HasAVX {
-			X86.HasAVXIFMA = isSet(23, eax71)
+			X86.HasAVXIFMA = isSet(eax71, cpuid_AVXIFMA)
-			X86.HasAVXVNNI = isSet(4, eax71)
+			X86.HasAVXVNNI = isSet(eax71, cpuid_AVXVNNI)
-			X86.HasAVXVNNIInt8 = isSet(4, edx71)
+			X86.HasAVXVNNIInt8 = isSet(edx71, cpuid_AVXVNNIInt8)
 		}
 	}
 }
 
-func isSet(bitpos uint, value uint32) bool {
+func isSet(hwc uint32, value uint32) bool {
-	return value&(1<<bitpos) != 0
+	return hwc&value != 0
 }

vendor/golang.org/x/sys/plan9/pwd_go15_plan9.go

@@ -1,21 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build go1.5
-
-package plan9
-
-import "syscall"
-
-func fixwd() {
-	syscall.Fixwd()
-}
-
-func Getwd() (wd string, err error) {
-	return syscall.Getwd()
-}
-
-func Chdir(path string) error {
-	return syscall.Chdir(path)
-}

vendor/golang.org/x/sys/plan9/pwd_plan9.go

@@ -2,22 +2,18 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build !go1.5
-
 package plan9
 
+import "syscall"
+
 func fixwd() {
+	syscall.Fixwd()
 }
 
 func Getwd() (wd string, err error) {
-	fd, err := open(".", O_RDONLY)
+	return syscall.Getwd()
-	if err != nil {
-		return "", err
-	}
-	defer Close(fd)
-	return Fd2path(fd)
 }
 
 func Chdir(path string) error {
-	return chdir(path)
+	return syscall.Chdir(path)
 }

vendor/golang.org/x/sys/unix/affinity_linux.go

@@ -38,8 +38,15 @@ func SchedSetaffinity(pid int, set *CPUSet) error {
 
 // Zero clears the set s, so that it contains no CPUs.
 func (s *CPUSet) Zero() {
+	clear(s[:])
+}
+
+// Fill adds all possible CPU bits to the set s. On Linux, [SchedSetaffinity]
+// will silently ignore any invalid CPU bits in [CPUSet] so this is an
+// efficient way of resetting the CPU affinity of a process.
+func (s *CPUSet) Fill() {
 	for i := range s {
-		s[i] = 0
+		s[i] = ^cpuMask(0)
 	}
 }
 

vendor/golang.org/x/sys/unix/fdset.go

@@ -23,7 +23,5 @@ func (fds *FdSet) IsSet(fd int) bool {
 
 // Zero clears the set fds.
 func (fds *FdSet) Zero() {
-	for i := range fds.Bits {
+	clear(fds.Bits[:])
-		fds.Bits[i] = 0
-	}
 }

vendor/golang.org/x/sys/unix/ifreq_linux.go

@@ -111,9 +111,7 @@ func (ifr *Ifreq) SetUint32(v uint32) {
 // clear zeroes the ifreq's union field to prevent trailing garbage data from
 // being sent to the kernel if an ifreq is reused.
 func (ifr *Ifreq) clear() {
-	for i := range ifr.raw.Ifru {
+	clear(ifr.raw.Ifru[:])
-		ifr.raw.Ifru[i] = 0
-	}
 }
 
 // TODO(mdlayher): export as IfreqData? For now we can provide helpers such as

vendor/golang.org/x/sys/unix/ioctl_signed.go

@@ -6,9 +6,7 @@
 
 package unix
 
-import (
+import "unsafe"
-	"unsafe"
-)
 
 // ioctl itself should not be exposed directly, but additional get/set
 // functions for specific types are permissible.
@@ -28,6 +26,13 @@ func IoctlSetPointerInt(fd int, req int, value int) error {
 	return ioctlPtr(fd, req, unsafe.Pointer(&v))
 }
 
+// IoctlSetString performs an ioctl operation which sets a string value
+// on fd, using the specified request number.
+func IoctlSetString(fd int, req int, value string) error {
+	bs := append([]byte(value), 0)
+	return ioctlPtr(fd, req, unsafe.Pointer(&bs[0]))
+}
+
 // IoctlSetWinsize performs an ioctl on fd with a *Winsize argument.
 //
 // To change fd's window size, the req argument should be TIOCSWINSZ.

vendor/golang.org/x/sys/unix/ioctl_unsigned.go

@@ -6,9 +6,7 @@
 
 package unix
 
-import (
+import "unsafe"
-	"unsafe"
-)
 
 // ioctl itself should not be exposed directly, but additional get/set
 // functions for specific types are permissible.
@@ -28,6 +26,13 @@ func IoctlSetPointerInt(fd int, req uint, value int) error {
 	return ioctlPtr(fd, req, unsafe.Pointer(&v))
 }
 
+// IoctlSetString performs an ioctl operation which sets a string value
+// on fd, using the specified request number.
+func IoctlSetString(fd int, req uint, value string) error {
+	bs := append([]byte(value), 0)
+	return ioctlPtr(fd, req, unsafe.Pointer(&bs[0]))
+}
+
 // IoctlSetWinsize performs an ioctl on fd with a *Winsize argument.
 //
 // To change fd's window size, the req argument should be TIOCSWINSZ.

vendor/golang.org/x/sys/unix/mkall.sh

@@ -49,6 +49,7 @@ esac
 if [[ "$GOOS" = "linux" ]]; then
 	# Use the Docker-based build system
 	# Files generated through docker (use $cmd so you can Ctl-C the build or run)
+	set -e
 	$cmd docker build --tag generate:$GOOS $GOOS
 	$cmd docker run --interactive --tty --volume $(cd -- "$(dirname -- "$0")/.." && pwd):/build generate:$GOOS
 	exit

vendor/golang.org/x/sys/unix/mkerrors.sh

@@ -226,6 +226,7 @@ struct ltchars {
 #include <linux/cryptouser.h>
 #include <linux/devlink.h>
 #include <linux/dm-ioctl.h>
+#include <linux/elf.h>
 #include <linux/errqueue.h>
 #include <linux/ethtool_netlink.h>
 #include <linux/falloc.h>
@@ -255,6 +256,7 @@ struct ltchars {
 #include <linux/loop.h>
 #include <linux/lwtunnel.h>
 #include <linux/magic.h>
+#include <linux/mei.h>
 #include <linux/memfd.h>
 #include <linux/module.h>
 #include <linux/mount.h>
@@ -349,6 +351,9 @@ struct ltchars {
 #define _HIDIOCGRAWPHYS		HIDIOCGRAWPHYS(_HIDIOCGRAWPHYS_LEN)
 #define _HIDIOCGRAWUNIQ		HIDIOCGRAWUNIQ(_HIDIOCGRAWUNIQ_LEN)
 
+// Renamed in v6.16, commit c6d732c38f93 ("net: ethtool: remove duplicate defines for family info")
+#define ETHTOOL_FAMILY_NAME	ETHTOOL_GENL_NAME
+#define ETHTOOL_FAMILY_VERSION	ETHTOOL_GENL_VERSION
 '
 
 includes_NetBSD='
@@ -526,6 +531,7 @@ ccflags="$@"
 		$2 ~ /^O[CNPFPL][A-Z]+[^_][A-Z]+$/ ||
 		$2 ~ /^(NL|CR|TAB|BS|VT|FF)DLY$/ ||
 		$2 ~ /^(NL|CR|TAB|BS|VT|FF)[0-9]$/ ||
+		$2 ~ /^(DT|EI|ELF|EV|NN|NT|PF|SHF|SHN|SHT|STB|STT|VER)_/ ||
 		$2 ~ /^O?XTABS$/ ||
 		$2 ~ /^TC[IO](ON|OFF)$/ ||
 		$2 ~ /^IN_/ ||
@@ -608,7 +614,7 @@ ccflags="$@"
 		$2 !~ /IOC_MAGIC/ &&
 		$2 ~ /^[A-Z][A-Z0-9_]+_MAGIC2?$/ ||
 		$2 ~ /^(VM|VMADDR)_/ ||
-		$2 ~ /^IOCTL_VM_SOCKETS_/ ||
+		$2 ~ /^(IOCTL_VM_SOCKETS_|IOCTL_MEI_)/ ||
 		$2 ~ /^(TASKSTATS|TS)_/ ||
 		$2 ~ /^CGROUPSTATS_/ ||
 		$2 ~ /^GENL_/ ||

vendor/golang.org/x/sys/unix/syscall_darwin.go

@@ -602,14 +602,9 @@ func Connectx(fd int, srcIf uint32, srcAddr, dstAddr Sockaddr, associd SaeAssocI
 	return
 }
 
-// sys	connectx(fd int, endpoints *SaEndpoints, associd SaeAssocID, flags uint32, iov []Iovec, n *uintptr, connid *SaeConnID) (err error)
 const minIovec = 8
 
 func Readv(fd int, iovs [][]byte) (n int, err error) {
-	if !darwinKernelVersionMin(11, 0, 0) {
-		return 0, ENOSYS
-	}
-
 	iovecs := make([]Iovec, 0, minIovec)
 	iovecs = appendBytes(iovecs, iovs)
 	n, err = readv(fd, iovecs)
@@ -618,9 +613,6 @@ func Readv(fd int, iovs [][]byte) (n int, err error) {
 }
 
 func Preadv(fd int, iovs [][]byte, offset int64) (n int, err error) {
-	if !darwinKernelVersionMin(11, 0, 0) {
-		return 0, ENOSYS
-	}
 	iovecs := make([]Iovec, 0, minIovec)
 	iovecs = appendBytes(iovecs, iovs)
 	n, err = preadv(fd, iovecs, offset)
@@ -629,10 +621,6 @@ func Preadv(fd int, iovs [][]byte, offset int64) (n int, err error) {
 }
 
 func Writev(fd int, iovs [][]byte) (n int, err error) {
-	if !darwinKernelVersionMin(11, 0, 0) {
-		return 0, ENOSYS
-	}
-
 	iovecs := make([]Iovec, 0, minIovec)
 	iovecs = appendBytes(iovecs, iovs)
 	if raceenabled {
@@ -644,10 +632,6 @@ func Writev(fd int, iovs [][]byte) (n int, err error) {
 }
 
 func Pwritev(fd int, iovs [][]byte, offset int64) (n int, err error) {
-	if !darwinKernelVersionMin(11, 0, 0) {
-		return 0, ENOSYS
-	}
-
 	iovecs := make([]Iovec, 0, minIovec)
 	iovecs = appendBytes(iovecs, iovs)
 	if raceenabled {
@@ -707,45 +691,7 @@ func readvRacedetect(iovecs []Iovec, n int, err error) {
 	}
 }
 
-func darwinMajorMinPatch() (maj, min, patch int, err error) {
+//sys	connectx(fd int, endpoints *SaEndpoints, associd SaeAssocID, flags uint32, iov []Iovec, n *uintptr, connid *SaeConnID) (err error)
-	var un Utsname
-	err = Uname(&un)
-	if err != nil {
-		return
-	}
-
-	var mmp [3]int
-	c := 0
-Loop:
-	for _, b := range un.Release[:] {
-		switch {
-		case b >= '0' && b <= '9':
-			mmp[c] = 10*mmp[c] + int(b-'0')
-		case b == '.':
-			c++
-			if c > 2 {
-				return 0, 0, 0, ENOTSUP
-			}
-		case b == 0:
-			break Loop
-		default:
-			return 0, 0, 0, ENOTSUP
-		}
-	}
-	if c != 2 {
-		return 0, 0, 0, ENOTSUP
-	}
-	return mmp[0], mmp[1], mmp[2], nil
-}
-
-func darwinKernelVersionMin(maj, min, patch int) bool {
-	actualMaj, actualMin, actualPatch, err := darwinMajorMinPatch()
-	if err != nil {
-		return false
-	}
-	return actualMaj > maj || actualMaj == maj && (actualMin > min || actualMin == min && actualPatch >= patch)
-}
-
 //sys	sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error)
 
 //sys	shmat(id int, addr uintptr, flag int) (ret uintptr, err error)

vendor/golang.org/x/sys/unix/syscall_linux.go

@@ -801,9 +801,7 @@ func (sa *SockaddrPPPoE) sockaddr() (unsafe.Pointer, _Socklen, error) {
 	// one. The kernel expects SID to be in network byte order.
 	binary.BigEndian.PutUint16(sa.raw[6:8], sa.SID)
 	copy(sa.raw[8:14], sa.Remote)
-	for i := 14; i < 14+IFNAMSIZ; i++ {
+	clear(sa.raw[14 : 14+IFNAMSIZ])
-		sa.raw[i] = 0
-	}
 	copy(sa.raw[14:], sa.Dev)
 	return unsafe.Pointer(&sa.raw), SizeofSockaddrPPPoX, nil
 }
@@ -2645,3 +2643,9 @@ func SchedGetAttr(pid int, flags uint) (*SchedAttr, error) {
 
 //sys	Cachestat(fd uint, crange *CachestatRange, cstat *Cachestat_t, flags uint) (err error)
 //sys	Mseal(b []byte, flags uint) (err error)
+
+//sys	setMemPolicy(mode int, mask *CPUSet, size int) (err error) = SYS_SET_MEMPOLICY
+
+func SetMemPolicy(mode int, mask *CPUSet) error {
+	return setMemPolicy(mode, mask, _CPU_SETSIZE)
+}

vendor/golang.org/x/sys/unix/syscall_netbsd.go

@@ -248,6 +248,23 @@ func Statvfs(path string, buf *Statvfs_t) (err error) {
 	return Statvfs1(path, buf, ST_WAIT)
 }
 
+func Getvfsstat(buf []Statvfs_t, flags int) (n int, err error) {
+	var (
+		_p0     unsafe.Pointer
+		bufsize uintptr
+	)
+	if len(buf) > 0 {
+		_p0 = unsafe.Pointer(&buf[0])
+		bufsize = unsafe.Sizeof(Statvfs_t{}) * uintptr(len(buf))
+	}
+	r0, _, e1 := Syscall(SYS_GETVFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
+	n = int(r0)
+	if e1 != 0 {
+		err = e1
+	}
+	return
+}
+
 /*
  * Exposed directly
  */

vendor/golang.org/x/sys/unix/syscall_solaris.go

@@ -629,7 +629,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
 //sys	Kill(pid int, signum syscall.Signal) (err error)
 //sys	Lchown(path string, uid int, gid int) (err error)
 //sys	Link(path string, link string) (err error)
-//sys	Listen(s int, backlog int) (err error) = libsocket.__xnet_llisten
+//sys	Listen(s int, backlog int) (err error) = libsocket.__xnet_listen
 //sys	Lstat(path string, stat *Stat_t) (err error)
 //sys	Madvise(b []byte, advice int) (err error)
 //sys	Mkdir(path string, mode uint32) (err error)
@@ -1052,14 +1052,6 @@ func IoctlSetIntRetInt(fd int, req int, arg int) (int, error) {
 	return ioctlRet(fd, req, uintptr(arg))
 }
 
-func IoctlSetString(fd int, req int, val string) error {
-	bs := make([]byte, len(val)+1)
-	copy(bs[:len(bs)-1], val)
-	err := ioctlPtr(fd, req, unsafe.Pointer(&bs[0]))
-	runtime.KeepAlive(&bs[0])
-	return err
-}
-
 // Lifreq Helpers
 
 func (l *Lifreq) SetName(name string) error {

vendor/golang.org/x/sys/unix/syscall_unix.go

@@ -367,7 +367,9 @@ func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from
 		iov[0].SetLen(len(p))
 	}
 	var rsa RawSockaddrAny
-	n, oobn, recvflags, err = recvmsgRaw(fd, iov[:], oob, flags, &rsa)
+	if n, oobn, recvflags, err = recvmsgRaw(fd, iov[:], oob, flags, &rsa); err != nil {
+		return
+	}
 	// source address is only specified if the socket is unconnected
 	if rsa.Addr.Family != AF_UNSPEC {
 		from, err = anyToSockaddr(fd, &rsa)
@@ -389,8 +391,10 @@ func RecvmsgBuffers(fd int, buffers [][]byte, oob []byte, flags int) (n, oobn in
 		}
 	}
 	var rsa RawSockaddrAny
-	n, oobn, recvflags, err = recvmsgRaw(fd, iov, oob, flags, &rsa)
+	if n, oobn, recvflags, err = recvmsgRaw(fd, iov, oob, flags, &rsa); err != nil {
-	if err == nil && rsa.Addr.Family != AF_UNSPEC {
+		return
+	}
+	if rsa.Addr.Family != AF_UNSPEC {
 		from, err = anyToSockaddr(fd, &rsa)
 	}
 	return

vendor/golang.org/x/sys/unix/zerrors_linux.go

@@ -319,6 +319,7 @@ const (
 	AUDIT_INTEGRITY_POLICY_RULE                 = 0x70f
 	AUDIT_INTEGRITY_RULE                        = 0x70d
 	AUDIT_INTEGRITY_STATUS                      = 0x70a
+	AUDIT_INTEGRITY_USERSPACE                   = 0x710
 	AUDIT_IPC                                   = 0x517
 	AUDIT_IPC_SET_PERM                          = 0x51f
 	AUDIT_IPE_ACCESS                            = 0x58c
@@ -327,6 +328,8 @@ const (
 	AUDIT_KERNEL                                = 0x7d0
 	AUDIT_KERNEL_OTHER                          = 0x524
 	AUDIT_KERN_MODULE                           = 0x532
+	AUDIT_LANDLOCK_ACCESS                       = 0x58f
+	AUDIT_LANDLOCK_DOMAIN                       = 0x590
 	AUDIT_LAST_FEATURE                          = 0x1
 	AUDIT_LAST_KERN_ANOM_MSG                    = 0x707
 	AUDIT_LAST_USER_MSG                         = 0x4af
@@ -491,6 +494,7 @@ const (
 	BPF_F_BEFORE                                = 0x8
 	BPF_F_ID                                    = 0x20
 	BPF_F_NETFILTER_IP_DEFRAG                   = 0x1
+	BPF_F_PREORDER                              = 0x40
 	BPF_F_QUERY_EFFECTIVE                       = 0x1
 	BPF_F_REDIRECT_FLAGS                        = 0x19
 	BPF_F_REPLACE                               = 0x4
@@ -527,6 +531,7 @@ const (
 	BPF_LDX                                     = 0x1
 	BPF_LEN                                     = 0x80
 	BPF_LL_OFF                                  = -0x200000
+	BPF_LOAD_ACQ                                = 0x100
 	BPF_LSH                                     = 0x60
 	BPF_MAJOR_VERSION                           = 0x1
 	BPF_MAXINSNS                                = 0x1000
@@ -554,6 +559,7 @@ const (
 	BPF_RET                                     = 0x6
 	BPF_RSH                                     = 0x70
 	BPF_ST                                      = 0x2
+	BPF_STORE_REL                               = 0x110
 	BPF_STX                                     = 0x3
 	BPF_SUB                                     = 0x10
 	BPF_TAG_SIZE                                = 0x8
@@ -843,24 +849,90 @@ const (
 	DM_UUID_FLAG                                = 0x4000
 	DM_UUID_LEN                                 = 0x81
 	DM_VERSION                                  = 0xc138fd00
-	DM_VERSION_EXTRA                            = "-ioctl (2023-03-01)"
+	DM_VERSION_EXTRA                            = "-ioctl (2025-04-28)"
 	DM_VERSION_MAJOR                            = 0x4
-	DM_VERSION_MINOR                            = 0x30
+	DM_VERSION_MINOR                            = 0x32
 	DM_VERSION_PATCHLEVEL                       = 0x0
+	DT_ADDRRNGHI                                = 0x6ffffeff
+	DT_ADDRRNGLO                                = 0x6ffffe00
 	DT_BLK                                      = 0x6
 	DT_CHR                                      = 0x2
+	DT_DEBUG                                    = 0x15
 	DT_DIR                                      = 0x4
+	DT_ENCODING                                 = 0x20
 	DT_FIFO                                     = 0x1
+	DT_FINI                                     = 0xd
+	DT_FLAGS_1                                  = 0x6ffffffb
+	DT_GNU_HASH                                 = 0x6ffffef5
+	DT_HASH                                     = 0x4
+	DT_HIOS                                     = 0x6ffff000
+	DT_HIPROC                                   = 0x7fffffff
+	DT_INIT                                     = 0xc
+	DT_JMPREL                                   = 0x17
 	DT_LNK                                      = 0xa
+	DT_LOOS                                     = 0x6000000d
+	DT_LOPROC                                   = 0x70000000
+	DT_NEEDED                                   = 0x1
+	DT_NULL                                     = 0x0
+	DT_PLTGOT                                   = 0x3
+	DT_PLTREL                                   = 0x14
+	DT_PLTRELSZ                                 = 0x2
 	DT_REG                                      = 0x8
+	DT_REL                                      = 0x11
+	DT_RELA                                     = 0x7
+	DT_RELACOUNT                                = 0x6ffffff9
+	DT_RELAENT                                  = 0x9
+	DT_RELASZ                                   = 0x8
+	DT_RELCOUNT                                 = 0x6ffffffa
+	DT_RELENT                                   = 0x13
+	DT_RELSZ                                    = 0x12
+	DT_RPATH                                    = 0xf
 	DT_SOCK                                     = 0xc
+	DT_SONAME                                   = 0xe
+	DT_STRSZ                                    = 0xa
+	DT_STRTAB                                   = 0x5
+	DT_SYMBOLIC                                 = 0x10
+	DT_SYMENT                                   = 0xb
+	DT_SYMTAB                                   = 0x6
+	DT_TEXTREL                                  = 0x16
 	DT_UNKNOWN                                  = 0x0
+	DT_VALRNGHI                                 = 0x6ffffdff
+	DT_VALRNGLO                                 = 0x6ffffd00
+	DT_VERDEF                                   = 0x6ffffffc
+	DT_VERDEFNUM                                = 0x6ffffffd
+	DT_VERNEED                                  = 0x6ffffffe
+	DT_VERNEEDNUM                               = 0x6fffffff
+	DT_VERSYM                                   = 0x6ffffff0
 	DT_WHT                                      = 0xe
 	ECHO                                        = 0x8
 	ECRYPTFS_SUPER_MAGIC                        = 0xf15f
 	EFD_SEMAPHORE                               = 0x1
 	EFIVARFS_MAGIC                              = 0xde5e81e4
 	EFS_SUPER_MAGIC                             = 0x414a53
+	EI_CLASS                                    = 0x4
+	EI_DATA                                     = 0x5
+	EI_MAG0                                     = 0x0
+	EI_MAG1                                     = 0x1
+	EI_MAG2                                     = 0x2
+	EI_MAG3                                     = 0x3
+	EI_NIDENT                                   = 0x10
+	EI_OSABI                                    = 0x7
+	EI_PAD                                      = 0x8
+	EI_VERSION                                  = 0x6
+	ELFCLASS32                                  = 0x1
+	ELFCLASS64                                  = 0x2
+	ELFCLASSNONE                                = 0x0
+	ELFCLASSNUM                                 = 0x3
+	ELFDATA2LSB                                 = 0x1
+	ELFDATA2MSB                                 = 0x2
+	ELFDATANONE                                 = 0x0
+	ELFMAG                                      = "\177ELF"
+	ELFMAG0                                     = 0x7f
+	ELFMAG1                                     = 'E'
+	ELFMAG2                                     = 'L'
+	ELFMAG3                                     = 'F'
+	ELFOSABI_LINUX                              = 0x3
+	ELFOSABI_NONE                               = 0x0
 	EM_386                                      = 0x3
 	EM_486                                      = 0x6
 	EM_68K                                      = 0x4
@@ -936,11 +1008,10 @@ const (
 	EPOLL_CTL_MOD                               = 0x3
 	EPOLL_IOC_TYPE                              = 0x8a
 	EROFS_SUPER_MAGIC_V1                        = 0xe0f5e1e2
-	ESP_V4_FLOW                                 = 0xa
-	ESP_V6_FLOW                                 = 0xc
-	ETHER_FLOW                                  = 0x12
 	ETHTOOL_BUSINFO_LEN                         = 0x20
 	ETHTOOL_EROMVERS_LEN                        = 0x20
+	ETHTOOL_FAMILY_NAME                         = "ethtool"
+	ETHTOOL_FAMILY_VERSION                      = 0x1
 	ETHTOOL_FEC_AUTO                            = 0x2
 	ETHTOOL_FEC_BASER                           = 0x10
 	ETHTOOL_FEC_LLRS                            = 0x20
@@ -1147,14 +1218,24 @@ const (
 	ETH_P_WCCP                                  = 0x883e
 	ETH_P_X25                                   = 0x805
 	ETH_P_XDSA                                  = 0xf8
+	ET_CORE                                     = 0x4
+	ET_DYN                                      = 0x3
+	ET_EXEC                                     = 0x2
+	ET_HIPROC                                   = 0xffff
+	ET_LOPROC                                   = 0xff00
+	ET_NONE                                     = 0x0
+	ET_REL                                      = 0x1
 	EV_ABS                                      = 0x3
 	EV_CNT                                      = 0x20
+	EV_CURRENT                                  = 0x1
 	EV_FF                                       = 0x15
 	EV_FF_STATUS                                = 0x17
 	EV_KEY                                      = 0x1
 	EV_LED                                      = 0x11
 	EV_MAX                                      = 0x1f
 	EV_MSC                                      = 0x4
+	EV_NONE                                     = 0x0
+	EV_NUM                                      = 0x2
 	EV_PWR                                      = 0x16
 	EV_REL                                      = 0x2
 	EV_REP                                      = 0x14
@@ -1203,13 +1284,18 @@ const (
 	FAN_DENY                                    = 0x2
 	FAN_ENABLE_AUDIT                            = 0x40
 	FAN_EPIDFD                                  = -0x2
+	FAN_ERRNO_BITS                              = 0x8
+	FAN_ERRNO_MASK                              = 0xff
+	FAN_ERRNO_SHIFT                             = 0x18
 	FAN_EVENT_INFO_TYPE_DFID                    = 0x3
 	FAN_EVENT_INFO_TYPE_DFID_NAME               = 0x2
 	FAN_EVENT_INFO_TYPE_ERROR                   = 0x5
 	FAN_EVENT_INFO_TYPE_FID                     = 0x1
+	FAN_EVENT_INFO_TYPE_MNT                     = 0x7
 	FAN_EVENT_INFO_TYPE_NEW_DFID_NAME           = 0xc
 	FAN_EVENT_INFO_TYPE_OLD_DFID_NAME           = 0xa
 	FAN_EVENT_INFO_TYPE_PIDFD                   = 0x4
+	FAN_EVENT_INFO_TYPE_RANGE                   = 0x6
 	FAN_EVENT_METADATA_LEN                      = 0x18
 	FAN_EVENT_ON_CHILD                          = 0x8000000
 	FAN_FS_ERROR                                = 0x8000
@@ -1224,9 +1310,12 @@ const (
 	FAN_MARK_IGNORED_SURV_MODIFY                = 0x40
 	FAN_MARK_IGNORE_SURV                        = 0x440
 	FAN_MARK_INODE                              = 0x0
+	FAN_MARK_MNTNS                              = 0x110
 	FAN_MARK_MOUNT                              = 0x10
 	FAN_MARK_ONLYDIR                            = 0x8
 	FAN_MARK_REMOVE                             = 0x2
+	FAN_MNT_ATTACH                              = 0x1000000
+	FAN_MNT_DETACH                              = 0x2000000
 	FAN_MODIFY                                  = 0x2
 	FAN_MOVE                                    = 0xc0
 	FAN_MOVED_FROM                              = 0x40
@@ -1240,6 +1329,7 @@ const (
 	FAN_OPEN_EXEC                               = 0x1000
 	FAN_OPEN_EXEC_PERM                          = 0x40000
 	FAN_OPEN_PERM                               = 0x10000
+	FAN_PRE_ACCESS                              = 0x100000
 	FAN_Q_OVERFLOW                              = 0x4000
 	FAN_RENAME                                  = 0x10000000
 	FAN_REPORT_DFID_NAME                        = 0xc00
@@ -1247,6 +1337,7 @@ const (
 	FAN_REPORT_DIR_FID                          = 0x400
 	FAN_REPORT_FD_ERROR                         = 0x2000
 	FAN_REPORT_FID                              = 0x200
+	FAN_REPORT_MNT                              = 0x4000
 	FAN_REPORT_NAME                             = 0x800
 	FAN_REPORT_PIDFD                            = 0x80
 	FAN_REPORT_TARGET_FID                       = 0x1000
@@ -1266,6 +1357,7 @@ const (
 	FIB_RULE_PERMANENT                          = 0x1
 	FIB_RULE_UNRESOLVED                         = 0x4
 	FIDEDUPERANGE                               = 0xc0189436
+	FSCRYPT_ADD_KEY_FLAG_HW_WRAPPED             = 0x1
 	FSCRYPT_KEY_DESCRIPTOR_SIZE                 = 0x8
 	FSCRYPT_KEY_DESC_PREFIX                     = "fscrypt:"
 	FSCRYPT_KEY_DESC_PREFIX_SIZE                = 0x8
@@ -1523,6 +1615,8 @@ const (
 	IN_OPEN                                     = 0x20
 	IN_Q_OVERFLOW                               = 0x4000
 	IN_UNMOUNT                                  = 0x2000
+	IOCTL_MEI_CONNECT_CLIENT                    = 0xc0104801
+	IOCTL_MEI_CONNECT_CLIENT_VTAG               = 0xc0144804
 	IPPROTO_AH                                  = 0x33
 	IPPROTO_BEETPH                              = 0x5e
 	IPPROTO_COMP                                = 0x6c
@@ -1574,7 +1668,6 @@ const (
 	IPV6_DONTFRAG                               = 0x3e
 	IPV6_DROP_MEMBERSHIP                        = 0x15
 	IPV6_DSTOPTS                                = 0x3b
-	IPV6_FLOW                                   = 0x11
 	IPV6_FREEBIND                               = 0x4e
 	IPV6_HDRINCL                                = 0x24
 	IPV6_HOPLIMIT                               = 0x34
@@ -1625,7 +1718,6 @@ const (
 	IPV6_TRANSPARENT                            = 0x4b
 	IPV6_UNICAST_HOPS                           = 0x10
 	IPV6_UNICAST_IF                             = 0x4c
-	IPV6_USER_FLOW                              = 0xe
 	IPV6_V6ONLY                                 = 0x1a
 	IPV6_VERSION                                = 0x60
 	IPV6_VERSION_MASK                           = 0xf0
@@ -1687,7 +1779,6 @@ const (
 	IP_TTL                                      = 0x2
 	IP_UNBLOCK_SOURCE                           = 0x25
 	IP_UNICAST_IF                               = 0x32
-	IP_USER_FLOW                                = 0xd
 	IP_XFRM_POLICY                              = 0x11
 	ISOFS_SUPER_MAGIC                           = 0x9660
 	ISTRIP                                      = 0x20
@@ -1809,7 +1900,11 @@ const (
 	LANDLOCK_ACCESS_FS_WRITE_FILE               = 0x2
 	LANDLOCK_ACCESS_NET_BIND_TCP                = 0x1
 	LANDLOCK_ACCESS_NET_CONNECT_TCP             = 0x2
+	LANDLOCK_CREATE_RULESET_ERRATA              = 0x2
 	LANDLOCK_CREATE_RULESET_VERSION             = 0x1
+	LANDLOCK_RESTRICT_SELF_LOG_NEW_EXEC_ON      = 0x2
+	LANDLOCK_RESTRICT_SELF_LOG_SAME_EXEC_OFF    = 0x1
+	LANDLOCK_RESTRICT_SELF_LOG_SUBDOMAINS_OFF   = 0x4
 	LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET         = 0x1
 	LANDLOCK_SCOPE_SIGNAL                       = 0x2
 	LINUX_REBOOT_CMD_CAD_OFF                    = 0x0
@@ -2259,7 +2354,167 @@ const (
 	NLM_F_REPLACE                               = 0x100
 	NLM_F_REQUEST                               = 0x1
 	NLM_F_ROOT                                  = 0x100
+	NN_386_IOPERM                               = "LINUX"
+	NN_386_TLS                                  = "LINUX"
+	NN_ARC_V2                                   = "LINUX"
+	NN_ARM_FPMR                                 = "LINUX"
+	NN_ARM_GCS                                  = "LINUX"
+	NN_ARM_HW_BREAK                             = "LINUX"
+	NN_ARM_HW_WATCH                             = "LINUX"
+	NN_ARM_PACA_KEYS                            = "LINUX"
+	NN_ARM_PACG_KEYS                            = "LINUX"
+	NN_ARM_PAC_ENABLED_KEYS                     = "LINUX"
+	NN_ARM_PAC_MASK                             = "LINUX"
+	NN_ARM_POE                                  = "LINUX"
+	NN_ARM_SSVE                                 = "LINUX"
+	NN_ARM_SVE                                  = "LINUX"
+	NN_ARM_SYSTEM_CALL                          = "LINUX"
+	NN_ARM_TAGGED_ADDR_CTRL                     = "LINUX"
+	NN_ARM_TLS                                  = "LINUX"
+	NN_ARM_VFP                                  = "LINUX"
+	NN_ARM_ZA                                   = "LINUX"
+	NN_ARM_ZT                                   = "LINUX"
+	NN_AUXV                                     = "CORE"
+	NN_FILE                                     = "CORE"
+	NN_GNU_PROPERTY_TYPE_0                      = "GNU"
+	NN_LOONGARCH_CPUCFG                         = "LINUX"
+	NN_LOONGARCH_CSR                            = "LINUX"
+	NN_LOONGARCH_HW_BREAK                       = "LINUX"
+	NN_LOONGARCH_HW_WATCH                       = "LINUX"
+	NN_LOONGARCH_LASX                           = "LINUX"
+	NN_LOONGARCH_LBT                            = "LINUX"
+	NN_LOONGARCH_LSX                            = "LINUX"
+	NN_MIPS_DSP                                 = "LINUX"
+	NN_MIPS_FP_MODE                             = "LINUX"
+	NN_MIPS_MSA                                 = "LINUX"
+	NN_PPC_DEXCR                                = "LINUX"
+	NN_PPC_DSCR                                 = "LINUX"
+	NN_PPC_EBB                                  = "LINUX"
+	NN_PPC_HASHKEYR                             = "LINUX"
+	NN_PPC_PKEY                                 = "LINUX"
+	NN_PPC_PMU                                  = "LINUX"
+	NN_PPC_PPR                                  = "LINUX"
+	NN_PPC_SPE                                  = "LINUX"
+	NN_PPC_TAR                                  = "LINUX"
+	NN_PPC_TM_CDSCR                             = "LINUX"
+	NN_PPC_TM_CFPR                              = "LINUX"
+	NN_PPC_TM_CGPR                              = "LINUX"
+	NN_PPC_TM_CPPR                              = "LINUX"
+	NN_PPC_TM_CTAR                              = "LINUX"
+	NN_PPC_TM_CVMX                              = "LINUX"
+	NN_PPC_TM_CVSX                              = "LINUX"
+	NN_PPC_TM_SPR                               = "LINUX"
+	NN_PPC_VMX                                  = "LINUX"
+	NN_PPC_VSX                                  = "LINUX"
+	NN_PRFPREG                                  = "CORE"
+	NN_PRPSINFO                                 = "CORE"
+	NN_PRSTATUS                                 = "CORE"
+	NN_PRXFPREG                                 = "LINUX"
+	NN_RISCV_CSR                                = "LINUX"
+	NN_RISCV_TAGGED_ADDR_CTRL                   = "LINUX"
+	NN_RISCV_VECTOR                             = "LINUX"
+	NN_S390_CTRS                                = "LINUX"
+	NN_S390_GS_BC                               = "LINUX"
+	NN_S390_GS_CB                               = "LINUX"
+	NN_S390_HIGH_GPRS                           = "LINUX"
+	NN_S390_LAST_BREAK                          = "LINUX"
+	NN_S390_PREFIX                              = "LINUX"
+	NN_S390_PV_CPU_DATA                         = "LINUX"
+	NN_S390_RI_CB                               = "LINUX"
+	NN_S390_SYSTEM_CALL                         = "LINUX"
+	NN_S390_TDB                                 = "LINUX"
+	NN_S390_TIMER                               = "LINUX"
+	NN_S390_TODCMP                              = "LINUX"
+	NN_S390_TODPREG                             = "LINUX"
+	NN_S390_VXRS_HIGH                           = "LINUX"
+	NN_S390_VXRS_LOW                            = "LINUX"
+	NN_SIGINFO                                  = "CORE"
+	NN_TASKSTRUCT                               = "CORE"
+	NN_VMCOREDD                                 = "LINUX"
+	NN_X86_SHSTK                                = "LINUX"
+	NN_X86_XSAVE_LAYOUT                         = "LINUX"
+	NN_X86_XSTATE                               = "LINUX"
 	NSFS_MAGIC                                  = 0x6e736673
+	NT_386_IOPERM                               = 0x201
+	NT_386_TLS                                  = 0x200
+	NT_ARC_V2                                   = 0x600
+	NT_ARM_FPMR                                 = 0x40e
+	NT_ARM_GCS                                  = 0x410
+	NT_ARM_HW_BREAK                             = 0x402
+	NT_ARM_HW_WATCH                             = 0x403
+	NT_ARM_PACA_KEYS                            = 0x407
+	NT_ARM_PACG_KEYS                            = 0x408
+	NT_ARM_PAC_ENABLED_KEYS                     = 0x40a
+	NT_ARM_PAC_MASK                             = 0x406
+	NT_ARM_POE                                  = 0x40f
+	NT_ARM_SSVE                                 = 0x40b
+	NT_ARM_SVE                                  = 0x405
+	NT_ARM_SYSTEM_CALL                          = 0x404
+	NT_ARM_TAGGED_ADDR_CTRL                     = 0x409
+	NT_ARM_TLS                                  = 0x401
+	NT_ARM_VFP                                  = 0x400
+	NT_ARM_ZA                                   = 0x40c
+	NT_ARM_ZT                                   = 0x40d
+	NT_AUXV                                     = 0x6
+	NT_FILE                                     = 0x46494c45
+	NT_GNU_PROPERTY_TYPE_0                      = 0x5
+	NT_LOONGARCH_CPUCFG                         = 0xa00
+	NT_LOONGARCH_CSR                            = 0xa01
+	NT_LOONGARCH_HW_BREAK                       = 0xa05
+	NT_LOONGARCH_HW_WATCH                       = 0xa06
+	NT_LOONGARCH_LASX                           = 0xa03
+	NT_LOONGARCH_LBT                            = 0xa04
+	NT_LOONGARCH_LSX                            = 0xa02
+	NT_MIPS_DSP                                 = 0x800
+	NT_MIPS_FP_MODE                             = 0x801
+	NT_MIPS_MSA                                 = 0x802
+	NT_PPC_DEXCR                                = 0x111
+	NT_PPC_DSCR                                 = 0x105
+	NT_PPC_EBB                                  = 0x106
+	NT_PPC_HASHKEYR                             = 0x112
+	NT_PPC_PKEY                                 = 0x110
+	NT_PPC_PMU                                  = 0x107
+	NT_PPC_PPR                                  = 0x104
+	NT_PPC_SPE                                  = 0x101
+	NT_PPC_TAR                                  = 0x103
+	NT_PPC_TM_CDSCR                             = 0x10f
+	NT_PPC_TM_CFPR                              = 0x109
+	NT_PPC_TM_CGPR                              = 0x108
+	NT_PPC_TM_CPPR                              = 0x10e
+	NT_PPC_TM_CTAR                              = 0x10d
+	NT_PPC_TM_CVMX                              = 0x10a
+	NT_PPC_TM_CVSX                              = 0x10b
+	NT_PPC_TM_SPR                               = 0x10c
+	NT_PPC_VMX                                  = 0x100
+	NT_PPC_VSX                                  = 0x102
+	NT_PRFPREG                                  = 0x2
+	NT_PRPSINFO                                 = 0x3
+	NT_PRSTATUS                                 = 0x1
+	NT_PRXFPREG                                 = 0x46e62b7f
+	NT_RISCV_CSR                                = 0x900
+	NT_RISCV_TAGGED_ADDR_CTRL                   = 0x902
+	NT_RISCV_VECTOR                             = 0x901
+	NT_S390_CTRS                                = 0x304
+	NT_S390_GS_BC                               = 0x30c
+	NT_S390_GS_CB                               = 0x30b
+	NT_S390_HIGH_GPRS                           = 0x300
+	NT_S390_LAST_BREAK                          = 0x306
+	NT_S390_PREFIX                              = 0x305
+	NT_S390_PV_CPU_DATA                         = 0x30e
+	NT_S390_RI_CB                               = 0x30d
+	NT_S390_SYSTEM_CALL                         = 0x307
+	NT_S390_TDB                                 = 0x308
+	NT_S390_TIMER                               = 0x301
+	NT_S390_TODCMP                              = 0x302
+	NT_S390_TODPREG                             = 0x303
+	NT_S390_VXRS_HIGH                           = 0x30a
+	NT_S390_VXRS_LOW                            = 0x309
+	NT_SIGINFO                                  = 0x53494749
+	NT_TASKSTRUCT                               = 0x4
+	NT_VMCOREDD                                 = 0x700
+	NT_X86_SHSTK                                = 0x204
+	NT_X86_XSAVE_LAYOUT                         = 0x205
+	NT_X86_XSTATE                               = 0x202
 	OCFS2_SUPER_MAGIC                           = 0x7461636f
 	OCRNL                                       = 0x8
 	OFDEL                                       = 0x80
@@ -2446,6 +2701,59 @@ const (
 	PERF_RECORD_MISC_USER                       = 0x2
 	PERF_SAMPLE_BRANCH_PLM_ALL                  = 0x7
 	PERF_SAMPLE_WEIGHT_TYPE                     = 0x1004000
+	PF_ALG                                      = 0x26
+	PF_APPLETALK                                = 0x5
+	PF_ASH                                      = 0x12
+	PF_ATMPVC                                   = 0x8
+	PF_ATMSVC                                   = 0x14
+	PF_AX25                                     = 0x3
+	PF_BLUETOOTH                                = 0x1f
+	PF_BRIDGE                                   = 0x7
+	PF_CAIF                                     = 0x25
+	PF_CAN                                      = 0x1d
+	PF_DECnet                                   = 0xc
+	PF_ECONET                                   = 0x13
+	PF_FILE                                     = 0x1
+	PF_IB                                       = 0x1b
+	PF_IEEE802154                               = 0x24
+	PF_INET                                     = 0x2
+	PF_INET6                                    = 0xa
+	PF_IPX                                      = 0x4
+	PF_IRDA                                     = 0x17
+	PF_ISDN                                     = 0x22
+	PF_IUCV                                     = 0x20
+	PF_KCM                                      = 0x29
+	PF_KEY                                      = 0xf
+	PF_LLC                                      = 0x1a
+	PF_LOCAL                                    = 0x1
+	PF_MAX                                      = 0x2e
+	PF_MCTP                                     = 0x2d
+	PF_MPLS                                     = 0x1c
+	PF_NETBEUI                                  = 0xd
+	PF_NETLINK                                  = 0x10
+	PF_NETROM                                   = 0x6
+	PF_NFC                                      = 0x27
+	PF_PACKET                                   = 0x11
+	PF_PHONET                                   = 0x23
+	PF_PPPOX                                    = 0x18
+	PF_QIPCRTR                                  = 0x2a
+	PF_R                                        = 0x4
+	PF_RDS                                      = 0x15
+	PF_ROSE                                     = 0xb
+	PF_ROUTE                                    = 0x10
+	PF_RXRPC                                    = 0x21
+	PF_SECURITY                                 = 0xe
+	PF_SMC                                      = 0x2b
+	PF_SNA                                      = 0x16
+	PF_TIPC                                     = 0x1e
+	PF_UNIX                                     = 0x1
+	PF_UNSPEC                                   = 0x0
+	PF_VSOCK                                    = 0x28
+	PF_W                                        = 0x2
+	PF_WANPIPE                                  = 0x19
+	PF_X                                        = 0x1
+	PF_X25                                      = 0x9
+	PF_XDP                                      = 0x2c
 	PID_FS_MAGIC                                = 0x50494446
 	PIPEFS_MAGIC                                = 0x50495045
 	PPPIOCGNPMODE                               = 0xc008744c
@@ -2485,6 +2793,10 @@ const (
 	PR_FP_EXC_UND                               = 0x40000
 	PR_FP_MODE_FR                               = 0x1
 	PR_FP_MODE_FRE                              = 0x2
+	PR_FUTEX_HASH                               = 0x4e
+	PR_FUTEX_HASH_GET_IMMUTABLE                 = 0x3
+	PR_FUTEX_HASH_GET_SLOTS                     = 0x2
+	PR_FUTEX_HASH_SET_SLOTS                     = 0x1
 	PR_GET_AUXV                                 = 0x41555856
 	PR_GET_CHILD_SUBREAPER                      = 0x25
 	PR_GET_DUMPABLE                             = 0x3
@@ -2644,6 +2956,10 @@ const (
 	PR_TAGGED_ADDR_ENABLE                       = 0x1
 	PR_TASK_PERF_EVENTS_DISABLE                 = 0x1f
 	PR_TASK_PERF_EVENTS_ENABLE                  = 0x20
+	PR_TIMER_CREATE_RESTORE_IDS                 = 0x4d
+	PR_TIMER_CREATE_RESTORE_IDS_GET             = 0x2
+	PR_TIMER_CREATE_RESTORE_IDS_OFF             = 0x0
+	PR_TIMER_CREATE_RESTORE_IDS_ON              = 0x1
 	PR_TIMING_STATISTICAL                       = 0x0
 	PR_TIMING_TIMESTAMP                         = 0x1
 	PR_TSC_ENABLE                               = 0x1
@@ -2724,6 +3040,7 @@ const (
 	PTRACE_SETREGSET                            = 0x4205
 	PTRACE_SETSIGINFO                           = 0x4203
 	PTRACE_SETSIGMASK                           = 0x420b
+	PTRACE_SET_SYSCALL_INFO                     = 0x4212
 	PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG     = 0x4210
 	PTRACE_SINGLESTEP                           = 0x9
 	PTRACE_SYSCALL                              = 0x18
@@ -2732,6 +3049,23 @@ const (
 	PTRACE_SYSCALL_INFO_NONE                    = 0x0
 	PTRACE_SYSCALL_INFO_SECCOMP                 = 0x3
 	PTRACE_TRACEME                              = 0x0
+	PT_AARCH64_MEMTAG_MTE                       = 0x70000002
+	PT_DYNAMIC                                  = 0x2
+	PT_GNU_EH_FRAME                             = 0x6474e550
+	PT_GNU_PROPERTY                             = 0x6474e553
+	PT_GNU_RELRO                                = 0x6474e552
+	PT_GNU_STACK                                = 0x6474e551
+	PT_HIOS                                     = 0x6fffffff
+	PT_HIPROC                                   = 0x7fffffff
+	PT_INTERP                                   = 0x3
+	PT_LOAD                                     = 0x1
+	PT_LOOS                                     = 0x60000000
+	PT_LOPROC                                   = 0x70000000
+	PT_NOTE                                     = 0x4
+	PT_NULL                                     = 0x0
+	PT_PHDR                                     = 0x6
+	PT_SHLIB                                    = 0x5
+	PT_TLS                                      = 0x7
 	P_ALL                                       = 0x0
 	P_PGID                                      = 0x2
 	P_PID                                       = 0x1
@@ -2787,7 +3121,7 @@ const (
 	RTAX_UNSPEC                                 = 0x0
 	RTAX_WINDOW                                 = 0x3
 	RTA_ALIGNTO                                 = 0x4
-	RTA_MAX                                     = 0x1e
+	RTA_MAX                                     = 0x1f
 	RTCF_DIRECTSRC                              = 0x4000000
 	RTCF_DOREDIRECT                             = 0x1000000
 	RTCF_LOG                                    = 0x2000000
@@ -2864,10 +3198,12 @@ const (
 	RTM_DELACTION                               = 0x31
 	RTM_DELADDR                                 = 0x15
 	RTM_DELADDRLABEL                            = 0x49
+	RTM_DELANYCAST                              = 0x3d
 	RTM_DELCHAIN                                = 0x65
 	RTM_DELLINK                                 = 0x11
 	RTM_DELLINKPROP                             = 0x6d
 	RTM_DELMDB                                  = 0x55
+	RTM_DELMULTICAST                            = 0x39
 	RTM_DELNEIGH                                = 0x1d
 	RTM_DELNETCONF                              = 0x51
 	RTM_DELNEXTHOP                              = 0x69
@@ -2917,11 +3253,13 @@ const (
 	RTM_NEWACTION                               = 0x30
 	RTM_NEWADDR                                 = 0x14
 	RTM_NEWADDRLABEL                            = 0x48
+	RTM_NEWANYCAST                              = 0x3c
 	RTM_NEWCACHEREPORT                          = 0x60
 	RTM_NEWCHAIN                                = 0x64
 	RTM_NEWLINK                                 = 0x10
 	RTM_NEWLINKPROP                             = 0x6c
 	RTM_NEWMDB                                  = 0x54
+	RTM_NEWMULTICAST                            = 0x38
 	RTM_NEWNDUSEROPT                            = 0x44
 	RTM_NEWNEIGH                                = 0x1c
 	RTM_NEWNEIGHTBL                             = 0x40
@@ -2970,6 +3308,7 @@ const (
 	RTPROT_NTK                                  = 0xf
 	RTPROT_OPENR                                = 0x63
 	RTPROT_OSPF                                 = 0xbc
+	RTPROT_OVN                                  = 0x54
 	RTPROT_RA                                   = 0x9
 	RTPROT_REDIRECT                             = 0x1
 	RTPROT_RIP                                  = 0xbd
@@ -2987,11 +3326,12 @@ const (
 	RUSAGE_THREAD                               = 0x1
 	RWF_APPEND                                  = 0x10
 	RWF_ATOMIC                                  = 0x40
+	RWF_DONTCACHE                               = 0x80
 	RWF_DSYNC                                   = 0x2
 	RWF_HIPRI                                   = 0x1
 	RWF_NOAPPEND                                = 0x20
 	RWF_NOWAIT                                  = 0x8
-	RWF_SUPPORTED                               = 0x7f
+	RWF_SUPPORTED                               = 0xff
 	RWF_SYNC                                    = 0x4
 	RWF_WRITE_LIFE_NOT_SET                      = 0x0
 	SCHED_BATCH                                 = 0x3
@@ -3059,6 +3399,47 @@ const (
 	SEEK_MAX                                    = 0x4
 	SEEK_SET                                    = 0x0
 	SELINUX_MAGIC                               = 0xf97cff8c
+	SHF_ALLOC                                   = 0x2
+	SHF_EXCLUDE                                 = 0x8000000
+	SHF_EXECINSTR                               = 0x4
+	SHF_GROUP                                   = 0x200
+	SHF_INFO_LINK                               = 0x40
+	SHF_LINK_ORDER                              = 0x80
+	SHF_MASKOS                                  = 0xff00000
+	SHF_MASKPROC                                = 0xf0000000
+	SHF_MERGE                                   = 0x10
+	SHF_ORDERED                                 = 0x4000000
+	SHF_OS_NONCONFORMING                        = 0x100
+	SHF_RELA_LIVEPATCH                          = 0x100000
+	SHF_RO_AFTER_INIT                           = 0x200000
+	SHF_STRINGS                                 = 0x20
+	SHF_TLS                                     = 0x400
+	SHF_WRITE                                   = 0x1
+	SHN_ABS                                     = 0xfff1
+	SHN_COMMON                                  = 0xfff2
+	SHN_HIPROC                                  = 0xff1f
+	SHN_HIRESERVE                               = 0xffff
+	SHN_LIVEPATCH                               = 0xff20
+	SHN_LOPROC                                  = 0xff00
+	SHN_LORESERVE                               = 0xff00
+	SHN_UNDEF                                   = 0x0
+	SHT_DYNAMIC                                 = 0x6
+	SHT_DYNSYM                                  = 0xb
+	SHT_HASH                                    = 0x5
+	SHT_HIPROC                                  = 0x7fffffff
+	SHT_HIUSER                                  = 0xffffffff
+	SHT_LOPROC                                  = 0x70000000
+	SHT_LOUSER                                  = 0x80000000
+	SHT_NOBITS                                  = 0x8
+	SHT_NOTE                                    = 0x7
+	SHT_NULL                                    = 0x0
+	SHT_NUM                                     = 0xc
+	SHT_PROGBITS                                = 0x1
+	SHT_REL                                     = 0x9
+	SHT_RELA                                    = 0x4
+	SHT_SHLIB                                   = 0xa
+	SHT_STRTAB                                  = 0x3
+	SHT_SYMTAB                                  = 0x2
 	SHUT_RD                                     = 0x0
 	SHUT_RDWR                                   = 0x2
 	SHUT_WR                                     = 0x1
@@ -3271,6 +3652,7 @@ const (
 	STATX_BTIME                                 = 0x800
 	STATX_CTIME                                 = 0x80
 	STATX_DIOALIGN                              = 0x2000
+	STATX_DIO_READ_ALIGN                        = 0x20000
 	STATX_GID                                   = 0x10
 	STATX_INO                                   = 0x100
 	STATX_MNT_ID                                = 0x1000
@@ -3284,6 +3666,16 @@ const (
 	STATX_UID                                   = 0x8
 	STATX_WRITE_ATOMIC                          = 0x10000
 	STATX__RESERVED                             = 0x80000000
+	STB_GLOBAL                                  = 0x1
+	STB_LOCAL                                   = 0x0
+	STB_WEAK                                    = 0x2
+	STT_COMMON                                  = 0x5
+	STT_FILE                                    = 0x4
+	STT_FUNC                                    = 0x2
+	STT_NOTYPE                                  = 0x0
+	STT_OBJECT                                  = 0x1
+	STT_SECTION                                 = 0x3
+	STT_TLS                                     = 0x6
 	SYNC_FILE_RANGE_WAIT_AFTER                  = 0x4
 	SYNC_FILE_RANGE_WAIT_BEFORE                 = 0x1
 	SYNC_FILE_RANGE_WRITE                       = 0x2
@@ -3322,7 +3714,7 @@ const (
 	TASKSTATS_GENL_NAME                         = "TASKSTATS"
 	TASKSTATS_GENL_VERSION                      = 0x1
 	TASKSTATS_TYPE_MAX                          = 0x6
-	TASKSTATS_VERSION                           = 0xe
+	TASKSTATS_VERSION                           = 0x10
 	TCIFLUSH                                    = 0x0
 	TCIOFF                                      = 0x2
 	TCIOFLUSH                                   = 0x2
@@ -3392,8 +3784,6 @@ const (
 	TCP_TX_DELAY                                = 0x25
 	TCP_ULP                                     = 0x1f
 	TCP_USER_TIMEOUT                            = 0x12
-	TCP_V4_FLOW                                 = 0x1
-	TCP_V6_FLOW                                 = 0x5
 	TCP_WINDOW_CLAMP                            = 0xa
 	TCP_ZEROCOPY_RECEIVE                        = 0x23
 	TFD_TIMER_ABSTIME                           = 0x1
@@ -3503,6 +3893,7 @@ const (
 	TP_STATUS_WRONG_FORMAT                      = 0x4
 	TRACEFS_MAGIC                               = 0x74726163
 	TS_COMM_LEN                                 = 0x20
+	UBI_IOCECNFO                                = 0xc01c6f06
 	UDF_SUPER_MAGIC                             = 0x15013346
 	UDP_CORK                                    = 0x1
 	UDP_ENCAP                                   = 0x64
@@ -3515,14 +3906,14 @@ const (
 	UDP_NO_CHECK6_RX                            = 0x66
 	UDP_NO_CHECK6_TX                            = 0x65
 	UDP_SEGMENT                                 = 0x67
-	UDP_V4_FLOW                                 = 0x2
-	UDP_V6_FLOW                                 = 0x6
 	UMOUNT_NOFOLLOW                             = 0x8
 	USBDEVICE_SUPER_MAGIC                       = 0x9fa2
 	UTIME_NOW                                   = 0x3fffffff
 	UTIME_OMIT                                  = 0x3ffffffe
 	V9FS_MAGIC                                  = 0x1021997
 	VERASE                                      = 0x2
+	VER_FLG_BASE                                = 0x1
+	VER_FLG_WEAK                                = 0x2
 	VINTR                                       = 0x0
 	VKILL                                       = 0x3
 	VLNEXT                                      = 0xf
@@ -3559,7 +3950,7 @@ const (
 	WDIOS_TEMPPANIC                             = 0x4
 	WDIOS_UNKNOWN                               = -0x1
 	WEXITED                                     = 0x4
-	WGALLOWEDIP_A_MAX                           = 0x3
+	WGALLOWEDIP_A_MAX                           = 0x4
 	WGDEVICE_A_MAX                              = 0x8
 	WGPEER_A_MAX                                = 0xa
 	WG_CMD_MAX                                  = 0x1
@@ -3673,6 +4064,7 @@ const (
 	XDP_SHARED_UMEM                             = 0x1
 	XDP_STATISTICS                              = 0x7
 	XDP_TXMD_FLAGS_CHECKSUM                     = 0x2
+	XDP_TXMD_FLAGS_LAUNCH_TIME                  = 0x4
 	XDP_TXMD_FLAGS_TIMESTAMP                    = 0x1
 	XDP_TX_METADATA                             = 0x2
 	XDP_TX_RING                                 = 0x3

vendor/golang.org/x/sys/unix/zerrors_linux_386.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0xfd12
 	ECCGETLAYOUT                     = 0x81484d11
 	ECCGETSTATS                      = 0x80104d12
 	ECHOCTL                          = 0x200
@@ -115,6 +116,8 @@ const (
 	IEXTEN                           = 0x8000
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x80044803
+	IOCTL_MEI_NOTIFY_SET             = 0x40044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x7b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -360,6 +363,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x10
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x11
@@ -372,6 +376,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x12
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x14
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x14

vendor/golang.org/x/sys/unix/zerrors_linux_amd64.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0xfd12
 	ECCGETLAYOUT                     = 0x81484d11
 	ECCGETSTATS                      = 0x80104d12
 	ECHOCTL                          = 0x200
@@ -115,6 +116,8 @@ const (
 	IEXTEN                           = 0x8000
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x80044803
+	IOCTL_MEI_NOTIFY_SET             = 0x40044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x7b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -361,6 +364,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x10
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x11
@@ -373,6 +377,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x12
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x14
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x14

vendor/golang.org/x/sys/unix/zerrors_linux_arm.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0xfd12
 	ECCGETLAYOUT                     = 0x81484d11
 	ECCGETSTATS                      = 0x80104d12
 	ECHOCTL                          = 0x200
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x8000
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x80044803
+	IOCTL_MEI_NOTIFY_SET             = 0x40044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x7b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -366,6 +369,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x10
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x11
@@ -378,6 +382,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x12
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x14
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x14

vendor/golang.org/x/sys/unix/zerrors_linux_arm64.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0xfd12
 	ECCGETLAYOUT                     = 0x81484d11
 	ECCGETSTATS                      = 0x80104d12
 	ECHOCTL                          = 0x200
@@ -119,6 +120,8 @@ const (
 	IEXTEN                           = 0x8000
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x80044803
+	IOCTL_MEI_NOTIFY_SET             = 0x40044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x7b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -359,6 +362,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x10
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x11
@@ -371,6 +375,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x12
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x14
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x14

vendor/golang.org/x/sys/unix/zerrors_linux_loong64.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0xfd12
 	ECCGETLAYOUT                     = 0x81484d11
 	ECCGETSTATS                      = 0x80104d12
 	ECHOCTL                          = 0x200
@@ -115,6 +116,8 @@ const (
 	IEXTEN                           = 0x8000
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x80044803
+	IOCTL_MEI_NOTIFY_SET             = 0x40044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x7b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -353,6 +356,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x10
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x11
@@ -365,6 +369,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x12
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x14
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x14

vendor/golang.org/x/sys/unix/zerrors_linux_mips.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0x2000fd12
 	ECCGETLAYOUT                     = 0x41484d11
 	ECCGETSTATS                      = 0x40104d12
 	ECHOCTL                          = 0x200
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x100
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x80
+	IOCTL_MEI_NOTIFY_GET             = 0x40044803
+	IOCTL_MEI_NOTIFY_SET             = 0x80044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x200007b9
 	IPV6_FLOWINFO_MASK               = 0xfffffff
 	IPV6_FLOWLABEL_MASK              = 0xfffff
@@ -359,6 +362,7 @@ const (
 	SO_OOBINLINE                     = 0x100
 	SO_PASSCRED                      = 0x11
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x12
@@ -371,6 +375,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x1004
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x1006
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x1006

vendor/golang.org/x/sys/unix/zerrors_linux_mips64.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0x2000fd12
 	ECCGETLAYOUT                     = 0x41484d11
 	ECCGETSTATS                      = 0x40104d12
 	ECHOCTL                          = 0x200
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x100
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x80
+	IOCTL_MEI_NOTIFY_GET             = 0x40044803
+	IOCTL_MEI_NOTIFY_SET             = 0x80044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x200007b9
 	IPV6_FLOWINFO_MASK               = 0xfffffff
 	IPV6_FLOWLABEL_MASK              = 0xfffff
@@ -359,6 +362,7 @@ const (
 	SO_OOBINLINE                     = 0x100
 	SO_PASSCRED                      = 0x11
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x12
@@ -371,6 +375,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x1004
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x1006
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x1006

vendor/golang.org/x/sys/unix/zerrors_linux_mips64le.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0x2000fd12
 	ECCGETLAYOUT                     = 0x41484d11
 	ECCGETSTATS                      = 0x40104d12
 	ECHOCTL                          = 0x200
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x100
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x80
+	IOCTL_MEI_NOTIFY_GET             = 0x40044803
+	IOCTL_MEI_NOTIFY_SET             = 0x80044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x200007b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -359,6 +362,7 @@ const (
 	SO_OOBINLINE                     = 0x100
 	SO_PASSCRED                      = 0x11
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x12
@@ -371,6 +375,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x1004
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x1006
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x1006

vendor/golang.org/x/sys/unix/zerrors_linux_mipsle.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0x2000fd12
 	ECCGETLAYOUT                     = 0x41484d11
 	ECCGETSTATS                      = 0x40104d12
 	ECHOCTL                          = 0x200
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x100
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x80
+	IOCTL_MEI_NOTIFY_GET             = 0x40044803
+	IOCTL_MEI_NOTIFY_SET             = 0x80044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x200007b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -359,6 +362,7 @@ const (
 	SO_OOBINLINE                     = 0x100
 	SO_PASSCRED                      = 0x11
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x12
@@ -371,6 +375,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x1004
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x1006
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x1006

vendor/golang.org/x/sys/unix/zerrors_linux_ppc.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x300
 	CSIZE                            = 0x300
 	CSTOPB                           = 0x400
+	DM_MPATH_PROBE_PATHS             = 0x2000fd12
 	ECCGETLAYOUT                     = 0x41484d11
 	ECCGETSTATS                      = 0x40104d12
 	ECHOCTL                          = 0x40
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x400
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x40044803
+	IOCTL_MEI_NOTIFY_SET             = 0x80044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x200007b9
 	IPV6_FLOWINFO_MASK               = 0xfffffff
 	IPV6_FLOWLABEL_MASK              = 0xfffff
@@ -414,6 +417,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x14
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x15
@@ -426,6 +430,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x10
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x12
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x12

vendor/golang.org/x/sys/unix/zerrors_linux_ppc64.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x300
 	CSIZE                            = 0x300
 	CSTOPB                           = 0x400
+	DM_MPATH_PROBE_PATHS             = 0x2000fd12
 	ECCGETLAYOUT                     = 0x41484d11
 	ECCGETSTATS                      = 0x40104d12
 	ECHOCTL                          = 0x40
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x400
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x40044803
+	IOCTL_MEI_NOTIFY_SET             = 0x80044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x200007b9
 	IPV6_FLOWINFO_MASK               = 0xfffffff
 	IPV6_FLOWLABEL_MASK              = 0xfffff
@@ -418,6 +421,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x14
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x15
@@ -430,6 +434,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x10
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x12
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x12

vendor/golang.org/x/sys/unix/zerrors_linux_ppc64le.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x300
 	CSIZE                            = 0x300
 	CSTOPB                           = 0x400
+	DM_MPATH_PROBE_PATHS             = 0x2000fd12
 	ECCGETLAYOUT                     = 0x41484d11
 	ECCGETSTATS                      = 0x40104d12
 	ECHOCTL                          = 0x40
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x400
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x40044803
+	IOCTL_MEI_NOTIFY_SET             = 0x80044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x200007b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -418,6 +421,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x14
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x15
@@ -430,6 +434,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x10
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x12
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x12

vendor/golang.org/x/sys/unix/zerrors_linux_riscv64.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0xfd12
 	ECCGETLAYOUT                     = 0x81484d11
 	ECCGETSTATS                      = 0x80104d12
 	ECHOCTL                          = 0x200
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x8000
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x80044803
+	IOCTL_MEI_NOTIFY_SET             = 0x40044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x7b9
 	IPV6_FLOWINFO_MASK               = 0xffffff0f
 	IPV6_FLOWLABEL_MASK              = 0xffff0f00
@@ -350,6 +353,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x10
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x11
@@ -362,6 +366,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x12
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x14
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x14

vendor/golang.org/x/sys/unix/zerrors_linux_s390x.go

@@ -68,6 +68,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0xfd12
 	ECCGETLAYOUT                     = 0x81484d11
 	ECCGETSTATS                      = 0x80104d12
 	ECHOCTL                          = 0x200
@@ -114,6 +115,8 @@ const (
 	IEXTEN                           = 0x8000
 	IN_CLOEXEC                       = 0x80000
 	IN_NONBLOCK                      = 0x800
+	IOCTL_MEI_NOTIFY_GET             = 0x80044803
+	IOCTL_MEI_NOTIFY_SET             = 0x40044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x7b9
 	IPV6_FLOWINFO_MASK               = 0xfffffff
 	IPV6_FLOWLABEL_MASK              = 0xfffff
@@ -422,6 +425,7 @@ const (
 	SO_OOBINLINE                     = 0xa
 	SO_PASSCRED                      = 0x10
 	SO_PASSPIDFD                     = 0x4c
+	SO_PASSRIGHTS                    = 0x53
 	SO_PASSSEC                       = 0x22
 	SO_PEEK_OFF                      = 0x2a
 	SO_PEERCRED                      = 0x11
@@ -434,6 +438,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x21
 	SO_RCVLOWAT                      = 0x12
 	SO_RCVMARK                       = 0x4b
+	SO_RCVPRIORITY                   = 0x52
 	SO_RCVTIMEO                      = 0x14
 	SO_RCVTIMEO_NEW                  = 0x42
 	SO_RCVTIMEO_OLD                  = 0x14

vendor/golang.org/x/sys/unix/zerrors_linux_sparc64.go

@@ -71,6 +71,7 @@ const (
 	CS8                              = 0x30
 	CSIZE                            = 0x30
 	CSTOPB                           = 0x40
+	DM_MPATH_PROBE_PATHS             = 0x2000fd12
 	ECCGETLAYOUT                     = 0x41484d11
 	ECCGETSTATS                      = 0x40104d12
 	ECHOCTL                          = 0x200
@@ -118,6 +119,8 @@ const (
 	IEXTEN                           = 0x8000
 	IN_CLOEXEC                       = 0x400000
 	IN_NONBLOCK                      = 0x4000
+	IOCTL_MEI_NOTIFY_GET             = 0x40044803
+	IOCTL_MEI_NOTIFY_SET             = 0x80044802
 	IOCTL_VM_SOCKETS_GET_LOCAL_CID   = 0x200007b9
 	IPV6_FLOWINFO_MASK               = 0xfffffff
 	IPV6_FLOWLABEL_MASK              = 0xfffff
@@ -461,6 +464,7 @@ const (
 	SO_OOBINLINE                     = 0x100
 	SO_PASSCRED                      = 0x2
 	SO_PASSPIDFD                     = 0x55
+	SO_PASSRIGHTS                    = 0x5c
 	SO_PASSSEC                       = 0x1f
 	SO_PEEK_OFF                      = 0x26
 	SO_PEERCRED                      = 0x40
@@ -473,6 +477,7 @@ const (
 	SO_RCVBUFFORCE                   = 0x100b
 	SO_RCVLOWAT                      = 0x800
 	SO_RCVMARK                       = 0x54
+	SO_RCVPRIORITY                   = 0x5b
 	SO_RCVTIMEO                      = 0x2000
 	SO_RCVTIMEO_NEW                  = 0x44
 	SO_RCVTIMEO_OLD                  = 0x2000

vendor/golang.org/x/sys/unix/zsyscall_linux.go

@@ -2238,3 +2238,13 @@ func Mseal(b []byte, flags uint) (err error) {
 	}
 	return
 }
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func setMemPolicy(mode int, mask *CPUSet, size int) (err error) {
+	_, _, e1 := Syscall(SYS_SET_MEMPOLICY, uintptr(mode), uintptr(unsafe.Pointer(mask)), uintptr(size))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}

vendor/golang.org/x/sys/unix/zsyscall_solaris_amd64.go

@@ -72,7 +72,7 @@ import (
 //go:cgo_import_dynamic libc_kill kill "libc.so"
 //go:cgo_import_dynamic libc_lchown lchown "libc.so"
 //go:cgo_import_dynamic libc_link link "libc.so"
-//go:cgo_import_dynamic libc___xnet_llisten __xnet_llisten "libsocket.so"
+//go:cgo_import_dynamic libc___xnet_listen __xnet_listen "libsocket.so"
 //go:cgo_import_dynamic libc_lstat lstat "libc.so"
 //go:cgo_import_dynamic libc_madvise madvise "libc.so"
 //go:cgo_import_dynamic libc_mkdir mkdir "libc.so"
@@ -221,7 +221,7 @@ import (
 //go:linkname procKill libc_kill
 //go:linkname procLchown libc_lchown
 //go:linkname procLink libc_link
-//go:linkname proc__xnet_llisten libc___xnet_llisten
+//go:linkname proc__xnet_listen libc___xnet_listen
 //go:linkname procLstat libc_lstat
 //go:linkname procMadvise libc_madvise
 //go:linkname procMkdir libc_mkdir
@@ -371,7 +371,7 @@ var (
 	procKill,
 	procLchown,
 	procLink,
-	proc__xnet_llisten,
+	proc__xnet_listen,
 	procLstat,
 	procMadvise,
 	procMkdir,
@@ -1178,7 +1178,7 @@ func Link(path string, link string) (err error) {
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 func Listen(s int, backlog int) (err error) {
-	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&proc__xnet_llisten)), 2, uintptr(s), uintptr(backlog), 0, 0, 0, 0)
+	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&proc__xnet_listen)), 2, uintptr(s), uintptr(backlog), 0, 0, 0, 0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

vendor/golang.org/x/sys/unix/zsysnum_linux_386.go

@@ -462,4 +462,5 @@ const (
 	SYS_GETXATTRAT                   = 464
 	SYS_LISTXATTRAT                  = 465
 	SYS_REMOVEXATTRAT                = 466
+	SYS_OPEN_TREE_ATTR               = 467
 )

vendor/golang.org/x/sys/unix/zsysnum_linux_amd64.go

@@ -385,4 +385,5 @@ const (
 	SYS_GETXATTRAT              = 464
 	SYS_LISTXATTRAT             = 465
 	SYS_REMOVEXATTRAT           = 466
+	SYS_OPEN_TREE_ATTR          = 467
 )

vendor/golang.org/x/sys/unix/zsysnum_linux_arm.go

@@ -426,4 +426,5 @@ const (
 	SYS_GETXATTRAT                   = 464
 	SYS_LISTXATTRAT                  = 465
 	SYS_REMOVEXATTRAT                = 466
+	SYS_OPEN_TREE_ATTR               = 467
 )

vendor/golang.org/x/sys/unix/zsysnum_linux_arm64.go

@@ -329,4 +329,5 @@ const (
 	SYS_GETXATTRAT              = 464
 	SYS_LISTXATTRAT             = 465
 	SYS_REMOVEXATTRAT           = 466
+	SYS_OPEN_TREE_ATTR          = 467
 )