[dev.boringcrypto.go1.18] all: merge go1.18.10 into dev.boringcrypto.go1.18dev.boringcrypto.go1.18

Change-Id: I0dcc4e288cba62382f6bd06b2cf0ff843309220c

33 files changed, 469 insertions, 211 deletions

diff --git a/misc/cgo/testcshared/cshared_test.go b/misc/cgo/testcshared/cshared_test.go
index c9e9e5fe63..1cd8c2ab4a 100644
--- a/misc/cgo/testcshared/cshared_test.go
+++ b/misc/cgo/testcshared/cshared_test.go
@@ -317,30 +317,46 @@ func createHeaders() error {
 		if err != nil {
 			return fmt.Errorf("unable to find dlltool path: %v\n%s\n", err, out)
 		}
-		args := []string{strings.TrimSpace(string(out)), "-D", args[6], "-l", libgoname, "-d", "libgo.def"}
-
-		// This is an unfortunate workaround for https://github.com/mstorsjo/llvm-mingw/issues/205 in which
-		// we basically reimplement the contents of the dlltool.sh wrapper: https://git.io/JZFlU
-		dlltoolContents, err := os.ReadFile(args[0])
-		if err != nil {
-			return fmt.Errorf("unable to read dlltool: %v\n", err)
+		dlltoolpath := strings.TrimSpace(string(out))
+		if filepath.Ext(dlltoolpath) == "" {
+			// Some compilers report slash-separated paths without extensions
+			// instead of ordinary Windows paths.
+			// Try to find the canonical name for the path.
+			if lp, err := exec.LookPath(dlltoolpath); err == nil {
+				dlltoolpath = lp
+			}
 		}
-		if bytes.HasPrefix(dlltoolContents, []byte("#!/bin/sh")) && bytes.Contains(dlltoolContents, []byte("llvm-dlltool")) {
-			base, name := filepath.Split(args[0])
-			args[0] = filepath.Join(base, "llvm-dlltool")
-			var machine string
-			switch prefix, _, _ := strings.Cut(name, "-"); prefix {
-			case "i686":
-				machine = "i386"
-			case "x86_64":
-				machine = "i386:x86-64"
-			case "armv7":
-				machine = "arm"
-			case "aarch64":
-				machine = "arm64"
+
+		args := []string{dlltoolpath, "-D", args[6], "-l", libgoname, "-d", "libgo.def"}
+
+		if filepath.Ext(dlltoolpath) == "" {
+			// This is an unfortunate workaround for
+			// https://github.com/mstorsjo/llvm-mingw/issues/205 in which
+			// we basically reimplement the contents of the dlltool.sh
+			// wrapper: https://git.io/JZFlU.
+			// TODO(thanm): remove this workaround once we can upgrade
+			// the compilers on the windows-arm64 builder.
+			dlltoolContents, err := os.ReadFile(args[0])
+			if err != nil {
+				return fmt.Errorf("unable to read dlltool: %v\n", err)
 			}
-			if len(machine) > 0 {
-				args = append(args, "-m", machine)
+			if bytes.HasPrefix(dlltoolContents, []byte("#!/bin/sh")) && bytes.Contains(dlltoolContents, []byte("llvm-dlltool")) {
+				base, name := filepath.Split(args[0])
+				args[0] = filepath.Join(base, "llvm-dlltool")
+				var machine string
+				switch prefix, _, _ := strings.Cut(name, "-"); prefix {
+				case "i686":
+					machine = "i386"
+				case "x86_64":
+					machine = "i386:x86-64"
+				case "armv7":
+					machine = "arm"
+				case "aarch64":
+					machine = "arm64"
+				}
+				if len(machine) > 0 {
+					args = append(args, "-m", machine)
+				}
 			}
 		}
 
diff --git a/src/cmd/cgo/gcc.go b/src/cmd/cgo/gcc.go
index dc5639812a..79d27c3e37 100644
--- a/src/cmd/cgo/gcc.go
+++ b/src/cmd/cgo/gcc.go
@@ -577,8 +577,23 @@ func (p *Package) loadDWARF(f *File, conv *typeConv, names []*Name) {
 		switch e.Tag {
 		case dwarf.TagVariable:
 			name, _ := e.Val(dwarf.AttrName).(string)
+			// As of https://reviews.llvm.org/D123534, clang
+			// now emits DW_TAG_variable DIEs that have
+			// no name (so as to be able to describe the
+			// type and source locations of constant strings
+			// like the second arg in the call below:
+			//
+			//     myfunction(42, "foo")
+			//
+			// If a var has no name we won't see attempts to
+			// refer to it via "C.<name>", so skip these vars
+			//
+			// See issue 53000 for more context.
+			if name == "" {
+				break
+			}
 			typOff, _ := e.Val(dwarf.AttrType).(dwarf.Offset)
-			if name == "" || typOff == 0 {
+			if typOff == 0 {
 				if e.Val(dwarf.AttrSpecification) != nil {
 					// Since we are reading all the DWARF,
 					// assume we will see the variable elsewhere.
diff --git a/src/cmd/compile/internal/ssa/gen/ARM64.rules b/src/cmd/compile/internal/ssa/gen/ARM64.rules
index 09e70ad13b..ad99960078 100644
--- a/src/cmd/compile/internal/ssa/gen/ARM64.rules
+++ b/src/cmd/compile/internal/ssa/gen/ARM64.rules
@@ -316,9 +316,9 @@
 (FCMPD x (FMOVDconst [0])) => (FCMPD0 x)
 (FCMPD (FMOVDconst [0]) x) => (InvertFlags (FCMPD0 x))
 
-// CSEL needs a flag-generating argument. Synthesize a CMPW if necessary.
+// CSEL needs a flag-generating argument. Synthesize a TSTW if necessary.
 (CondSelect x y boolval) && flagArg(boolval) != nil => (CSEL [boolval.Op] x y flagArg(boolval))
-(CondSelect x y boolval) && flagArg(boolval) == nil => (CSEL [OpARM64NotEqual] x y (CMPWconst [0] boolval))
+(CondSelect x y boolval) && flagArg(boolval) == nil => (CSEL [OpARM64NotEqual] x y (TSTWconst [1] boolval))
 
 (OffPtr [off] ptr:(SP)) && is32Bit(off) => (MOVDaddr [int32(off)] ptr)
 (OffPtr [off] ptr) => (ADDconst [off] ptr)
diff --git a/src/cmd/compile/internal/ssa/gen/MIPS64.rules b/src/cmd/compile/internal/ssa/gen/MIPS64.rules
index 292ff2fc79..0d6d30fa4c 100644
--- a/src/cmd/compile/internal/ssa/gen/MIPS64.rules
+++ b/src/cmd/compile/internal/ssa/gen/MIPS64.rules
@@ -392,7 +392,8 @@
 
 (AtomicAdd(32|64) ...) => (LoweredAtomicAdd(32|64) ...)
 
-(AtomicCompareAndSwap(32|64) ...) => (LoweredAtomicCas(32|64) ...)
+(AtomicCompareAndSwap32 ptr old new mem) => (LoweredAtomicCas32 ptr (SignExt32to64 old) new mem)
+(AtomicCompareAndSwap64 ...) => (LoweredAtomicCas64 ...)
 
 // checks
 (NilCheck ...) => (LoweredNilCheck ...)
diff --git a/src/cmd/compile/internal/ssa/gen/PPC64.rules b/src/cmd/compile/internal/ssa/gen/PPC64.rules
index a90a3d0937..f83ed78bab 100644
--- a/src/cmd/compile/internal/ssa/gen/PPC64.rules
+++ b/src/cmd/compile/internal/ssa/gen/PPC64.rules
@@ -562,9 +562,9 @@
 ((EQ|NE|LT|LE|GT|GE) (CMPconst [0] z:(XOR x y)) yes no) && z.Uses == 1 => ((EQ|NE|LT|LE|GT|GE) (XORCC x y) yes no)
 
 // Only lower after bool is lowered. It should always lower. This helps ensure the folding below happens reliably.
-(CondSelect x y bool) && flagArg(bool) == nil => (ISEL [6] x y (CMPWconst [0] bool))
+(CondSelect x y bool) && flagArg(bool) == nil => (ISEL [6] x y (Select1 <types.TypeFlags> (ANDCCconst [1] bool)))
 // Fold any CR -> GPR -> CR transfers when applying the above rule.
-(ISEL [6] x y (CMPWconst [0] (ISELB [c] one cmp))) => (ISEL [c] x y cmp)
+(ISEL [6] x y (Select1 (ANDCCconst [1] (ISELB [c] one cmp)))) => (ISEL [c] x y cmp)
 
 // Lowering loads
 (Load <t> ptr mem) && (is64BitInt(t) || isPtr(t)) => (MOVDload ptr mem)
diff --git a/src/cmd/compile/internal/ssa/gen/PPC64Ops.go b/src/cmd/compile/internal/ssa/gen/PPC64Ops.go
index 59d8af1a9d..d18cbcc787 100644
--- a/src/cmd/compile/internal/ssa/gen/PPC64Ops.go
+++ b/src/cmd/compile/internal/ssa/gen/PPC64Ops.go
@@ -11,8 +11,8 @@ import "strings"
 
 // Notes:
 //  - Less-than-64-bit integer types live in the low portion of registers.
-//    For now, the upper portion is junk; sign/zero-extension might be optimized in the future, but not yet.
-//  - Boolean types are zero or 1; stored in a byte, but loaded with AMOVBZ so the upper bytes of a register are zero.
+//    The upper portion is junk.
+//  - Boolean types are zero or 1; stored in a byte, with upper bytes of the register containing junk.
 //  - *const instructions may use a constant larger than the instruction can encode.
 //    In this case the assembler expands to multiple instructions and uses tmp
 //    register (R31).
diff --git a/src/cmd/compile/internal/ssa/gen/RISCV64.rules b/src/cmd/compile/internal/ssa/gen/RISCV64.rules
index 7aea622c5e..acef3df389 100644
--- a/src/cmd/compile/internal/ssa/gen/RISCV64.rules
+++ b/src/cmd/compile/internal/ssa/gen/RISCV64.rules
@@ -568,7 +568,7 @@
 
 (AtomicAnd32 ...) => (LoweredAtomicAnd32 ...)
 
-(AtomicCompareAndSwap32 ...) => (LoweredAtomicCas32 ...)
+(AtomicCompareAndSwap32 ptr old new mem) => (LoweredAtomicCas32 ptr (SignExt32to64 old) new mem)
 (AtomicCompareAndSwap64 ...) => (LoweredAtomicCas64 ...)
 
 (AtomicExchange32 ...) => (LoweredAtomicExchange32 ...)
diff --git a/src/cmd/compile/internal/ssa/rewriteARM64.go b/src/cmd/compile/internal/ssa/rewriteARM64.go
index 1ee25c2eee..ad1052f88d 100644
--- a/src/cmd/compile/internal/ssa/rewriteARM64.go
+++ b/src/cmd/compile/internal/ssa/rewriteARM64.go
@@ -23409,7 +23409,7 @@ func rewriteValueARM64_OpCondSelect(v *Value) bool {
 	}
 	// match: (CondSelect x y boolval)
 	// cond: flagArg(boolval) == nil
-	// result: (CSEL [OpARM64NotEqual] x y (CMPWconst [0] boolval))
+	// result: (CSEL [OpARM64NotEqual] x y (TSTWconst [1] boolval))
 	for {
 		x := v_0
 		y := v_1
@@ -23419,8 +23419,8 @@ func rewriteValueARM64_OpCondSelect(v *Value) bool {
 		}
 		v.reset(OpARM64CSEL)
 		v.AuxInt = opToAuxInt(OpARM64NotEqual)
-		v0 := b.NewValue0(v.Pos, OpARM64CMPWconst, types.TypeFlags)
-		v0.AuxInt = int32ToAuxInt(0)
+		v0 := b.NewValue0(v.Pos, OpARM64TSTWconst, types.TypeFlags)
+		v0.AuxInt = int32ToAuxInt(1)
 		v0.AddArg(boolval)
 		v.AddArg3(x, y, v0)
 		return true
diff --git a/src/cmd/compile/internal/ssa/rewriteMIPS64.go b/src/cmd/compile/internal/ssa/rewriteMIPS64.go
index 1fbd556b5c..6a0fd3ad6e 100644
--- a/src/cmd/compile/internal/ssa/rewriteMIPS64.go
+++ b/src/cmd/compile/internal/ssa/rewriteMIPS64.go
@@ -52,8 +52,7 @@ func rewriteValueMIPS64(v *Value) bool {
 		v.Op = OpMIPS64LoweredAtomicAdd64
 		return true
 	case OpAtomicCompareAndSwap32:
-		v.Op = OpMIPS64LoweredAtomicCas32
-		return true
+		return rewriteValueMIPS64_OpAtomicCompareAndSwap32(v)
 	case OpAtomicCompareAndSwap64:
 		v.Op = OpMIPS64LoweredAtomicCas64
 		return true
@@ -697,6 +696,27 @@ func rewriteValueMIPS64_OpAddr(v *Value) bool {
 		return true
 	}
 }
+func rewriteValueMIPS64_OpAtomicCompareAndSwap32(v *Value) bool {
+	v_3 := v.Args[3]
+	v_2 := v.Args[2]
+	v_1 := v.Args[1]
+	v_0 := v.Args[0]
+	b := v.Block
+	typ := &b.Func.Config.Types
+	// match: (AtomicCompareAndSwap32 ptr old new mem)
+	// result: (LoweredAtomicCas32 ptr (SignExt32to64 old) new mem)
+	for {
+		ptr := v_0
+		old := v_1
+		new := v_2
+		mem := v_3
+		v.reset(OpMIPS64LoweredAtomicCas32)
+		v0 := b.NewValue0(v.Pos, OpSignExt32to64, typ.Int64)
+		v0.AddArg(old)
+		v.AddArg4(ptr, v0, new, mem)
+		return true
+	}
+}
 func rewriteValueMIPS64_OpAvg64u(v *Value) bool {
 	v_1 := v.Args[1]
 	v_0 := v.Args[0]
diff --git a/src/cmd/compile/internal/ssa/rewritePPC64.go b/src/cmd/compile/internal/ssa/rewritePPC64.go
index 5a28b9d4f7..c7bcc248fc 100644
--- a/src/cmd/compile/internal/ssa/rewritePPC64.go
+++ b/src/cmd/compile/internal/ssa/rewritePPC64.go
@@ -1167,9 +1167,10 @@ func rewriteValuePPC64_OpCondSelect(v *Value) bool {
 	v_1 := v.Args[1]
 	v_0 := v.Args[0]
 	b := v.Block
+	typ := &b.Func.Config.Types
 	// match: (CondSelect x y bool)
 	// cond: flagArg(bool) == nil
-	// result: (ISEL [6] x y (CMPWconst [0] bool))
+	// result: (ISEL [6] x y (Select1 <types.TypeFlags> (ANDCCconst [1] bool)))
 	for {
 		x := v_0
 		y := v_1
@@ -1179,9 +1180,11 @@ func rewriteValuePPC64_OpCondSelect(v *Value) bool {
 		}
 		v.reset(OpPPC64ISEL)
 		v.AuxInt = int32ToAuxInt(6)
-		v0 := b.NewValue0(v.Pos, OpPPC64CMPWconst, types.TypeFlags)
-		v0.AuxInt = int32ToAuxInt(0)
-		v0.AddArg(bool)
+		v0 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags)
+		v1 := b.NewValue0(v.Pos, OpPPC64ANDCCconst, types.NewTuple(typ.Int, types.TypeFlags))
+		v1.AuxInt = int64ToAuxInt(1)
+		v1.AddArg(bool)
+		v0.AddArg(v1)
 		v.AddArg3(x, y, v0)
 		return true
 	}
@@ -5895,7 +5898,7 @@ func rewriteValuePPC64_OpPPC64ISEL(v *Value) bool {
 		v.AddArg(y)
 		return true
 	}
-	// match: (ISEL [6] x y (CMPWconst [0] (ISELB [c] one cmp)))
+	// match: (ISEL [6] x y (Select1 (ANDCCconst [1] (ISELB [c] one cmp))))
 	// result: (ISEL [c] x y cmp)
 	for {
 		if auxIntToInt32(v.AuxInt) != 6 {
@@ -5903,15 +5906,19 @@ func rewriteValuePPC64_OpPPC64ISEL(v *Value) bool {
 		}
 		x := v_0
 		y := v_1
-		if v_2.Op != OpPPC64CMPWconst || auxIntToInt32(v_2.AuxInt) != 0 {
+		if v_2.Op != OpSelect1 {
 			break
 		}
 		v_2_0 := v_2.Args[0]
-		if v_2_0.Op != OpPPC64ISELB {
+		if v_2_0.Op != OpPPC64ANDCCconst || auxIntToInt64(v_2_0.AuxInt) != 1 {
+			break
+		}
+		v_2_0_0 := v_2_0.Args[0]
+		if v_2_0_0.Op != OpPPC64ISELB {
 			break
 		}
-		c := auxIntToInt32(v_2_0.AuxInt)
-		cmp := v_2_0.Args[1]
+		c := auxIntToInt32(v_2_0_0.AuxInt)
+		cmp := v_2_0_0.Args[1]
 		v.reset(OpPPC64ISEL)
 		v.AuxInt = int32ToAuxInt(c)
 		v.AddArg3(x, y, cmp)
diff --git a/src/cmd/compile/internal/ssa/rewriteRISCV64.go b/src/cmd/compile/internal/ssa/rewriteRISCV64.go
index 6828d97ff8..b277979061 100644
--- a/src/cmd/compile/internal/ssa/rewriteRISCV64.go
+++ b/src/cmd/compile/internal/ssa/rewriteRISCV64.go
@@ -61,8 +61,7 @@ func rewriteValueRISCV64(v *Value) bool {
 	case OpAtomicAnd8:
 		return rewriteValueRISCV64_OpAtomicAnd8(v)
 	case OpAtomicCompareAndSwap32:
-		v.Op = OpRISCV64LoweredAtomicCas32
-		return true
+		return rewriteValueRISCV64_OpAtomicCompareAndSwap32(v)
 	case OpAtomicCompareAndSwap64:
 		v.Op = OpRISCV64LoweredAtomicCas64
 		return true
@@ -765,6 +764,27 @@ func rewriteValueRISCV64_OpAtomicAnd8(v *Value) bool {
 		return true
 	}
 }
+func rewriteValueRISCV64_OpAtomicCompareAndSwap32(v *Value) bool {
+	v_3 := v.Args[3]
+	v_2 := v.Args[2]
+	v_1 := v.Args[1]
+	v_0 := v.Args[0]
+	b := v.Block
+	typ := &b.Func.Config.Types
+	// match: (AtomicCompareAndSwap32 ptr old new mem)
+	// result: (LoweredAtomicCas32 ptr (SignExt32to64 old) new mem)
+	for {
+		ptr := v_0
+		old := v_1
+		new := v_2
+		mem := v_3
+		v.reset(OpRISCV64LoweredAtomicCas32)
+		v0 := b.NewValue0(v.Pos, OpSignExt32to64, typ.Int64)
+		v0.AddArg(old)
+		v.AddArg4(ptr, v0, new, mem)
+		return true
+	}
+}
 func rewriteValueRISCV64_OpAtomicOr8(v *Value) bool {
 	v_2 := v.Args[2]
 	v_1 := v.Args[1]
diff --git a/src/cmd/go/testdata/script/mod_replace_gopkgin.txt b/src/cmd/go/testdata/script/mod_replace_gopkgin.txt
index df752d9716..8cb034c36c 100644
--- a/src/cmd/go/testdata/script/mod_replace_gopkgin.txt
+++ b/src/cmd/go/testdata/script/mod_replace_gopkgin.txt
@@ -4,6 +4,9 @@
 # even if there is an explicit go.mod file containing the
 # gopkg.in path.
 
+skip 'skipping test that depends on an unreliable third-party server; see https://go.dev/issue/54503'
+	# TODO(#54043): Make this test hermetic and re-enable it.
+
 [short] skip
 [!net] skip
 [!exec:git] skip
diff --git a/src/cmd/go/testdata/script/trampoline_reuse_test.txt b/src/cmd/go/testdata/script/trampoline_reuse_test.txt
new file mode 100644
index 0000000000..bca897c16d
--- /dev/null
+++ b/src/cmd/go/testdata/script/trampoline_reuse_test.txt
@@ -0,0 +1,100 @@
+# Verify PPC64 does not reuse a trampoline which is too far away.
+# This tests an edge case where the direct call relocation addend should
+# be ignored when computing the distance from the direct call to the
+# already placed trampoline
+[short] skip
+[!ppc64] [!ppc64le] skip
+[aix] skip
+
+# Note, this program does not run. Presumably, 'DWORD $0' is simpler to
+# assembly 2^26 or so times.
+#
+# We build something which should be laid out as such:
+#
+# bar.Bar
+# main.Func1
+# bar.Bar+400-tramp0
+# main.BigAsm
+# main.Func2
+# bar.Bar+400-tramp1
+#
+# bar.Bar needs to be placed far enough away to generate relocations
+# from main package calls. and main.Func1 and main.Func2 are placed
+# a bit more than the direct call limit apart, but not more than 0x400
+# bytes beyond it (to verify the reloc calc).
+
+go build
+
+-- go.mod --
+
+module foo
+
+go 1.19
+
+-- main.go --
+
+package main
+
+import "foo/bar"
+
+func Func1()
+
+func main() {
+        Func1()
+        bar.Bar2()
+}
+
+-- foo.s --
+
+TEXT main·Func1(SB),0,$0-0
+        CALL bar·Bar+0x400(SB)
+        CALL main·BigAsm(SB)
+// A trampoline will be placed here to bar.Bar
+
+// This creates a gap sufficiently large to prevent trampoline reuse
+#define NOP64 DWORD $0; DWORD $0; DWORD $0; DWORD $0; DWORD $0; DWORD $0; DWORD $0; DWORD $0;
+#define NOP256 NOP64 NOP64 NOP64 NOP64
+#define NOP2S10 NOP256 NOP256 NOP256 NOP256
+#define NOP2S12 NOP2S10 NOP2S10 NOP2S10 NOP2S10
+#define NOP2S14 NOP2S12 NOP2S12 NOP2S12 NOP2S12
+#define NOP2S16 NOP2S14 NOP2S14 NOP2S14 NOP2S14
+#define NOP2S18 NOP2S16 NOP2S16 NOP2S16 NOP2S16
+#define NOP2S20 NOP2S18 NOP2S18 NOP2S18 NOP2S18
+#define NOP2S22 NOP2S20 NOP2S20 NOP2S20 NOP2S20
+#define NOP2S24 NOP2S22 NOP2S22 NOP2S22 NOP2S22
+#define BIGNOP NOP2S24 NOP2S24
+TEXT main·BigAsm(SB),0,$0-0
+        // Fill to the direct call limit so Func2 must generate a new trampoline.
+        // As the implicit trampoline above is just barely unreachable.
+        BIGNOP
+        MOVD $main·Func2(SB), R3
+
+TEXT main·Func2(SB),0,$0-0
+        CALL bar·Bar+0x400(SB)
+// Another trampoline should be placed here.
+
+-- bar/bar.s --
+
+#define NOP64 DWORD $0; DWORD $0; DWORD $0; DWORD $0; DWORD $0; DWORD $0; DWORD $0; DWORD $0;
+#define NOP256 NOP64 NOP64 NOP64 NOP64
+#define NOP2S10 NOP256 NOP256 NOP256 NOP256
+#define NOP2S12 NOP2S10 NOP2S10 NOP2S10 NOP2S10
+#define NOP2S14 NOP2S12 NOP2S12 NOP2S12 NOP2S12
+#define NOP2S16 NOP2S14 NOP2S14 NOP2S14 NOP2S14
+#define NOP2S18 NOP2S16 NOP2S16 NOP2S16 NOP2S16
+#define NOP2S20 NOP2S18 NOP2S18 NOP2S18 NOP2S18
+#define NOP2S22 NOP2S20 NOP2S20 NOP2S20 NOP2S20
+#define NOP2S24 NOP2S22 NOP2S22 NOP2S22 NOP2S22
+#define BIGNOP NOP2S24 NOP2S24 NOP2S10
+// A very big not very interesting function.
+TEXT bar·Bar(SB),0,$0-0
+        BIGNOP
+
+-- bar/bar.go --
+
+package bar
+
+func Bar()
+
+func Bar2() {
+}
diff --git a/src/cmd/go/testdata/script/version_buildvcs_git_gpg.txt b/src/cmd/go/testdata/script/version_buildvcs_git_gpg.txt
deleted file mode 100644
index dcf97d7c44..0000000000
--- a/src/cmd/go/testdata/script/version_buildvcs_git_gpg.txt
+++ /dev/null
@@ -1,105 +0,0 @@
-# This test checks that VCS information is stamped into Go binaries even when
-# the current commit is signed and the use has configured git to display commit
-# signatures.
-
-[!exec:git] skip
-[!exec:gpg] skip
-[short] skip
-env GOBIN=$GOPATH/bin
-env GNUPGHOME=$WORK/.gpupg
-mkdir $GNUPGHOME
-chmod 0700 $GNUPGHOME
-
-# Create GPG key
-exec gpg --batch --passphrase '' --quick-generate-key gopher@golang.org
-exec gpg --list-secret-keys --with-colons gopher@golang.org
-cp stdout keyinfo.txt
-go run extract_key_id.go keyinfo.txt
-cp stdout keyid.txt
-
-# Initialize repo
-cd repo/
-exec git init
-exec git config user.email gopher@golang.org
-exec git config user.name 'J.R. Gopher'
-exec git config --add log.showSignature true
-go run ../configure_signing_key.go ../keyid.txt
-
-# Create signed commit
-cd a
-exec git add -A
-exec git commit -m 'initial commit' --gpg-sign
-exec git log
-
-# Verify commit signature does not interfere with versioning
-go install
-go version -m $GOBIN/a
-stdout '^\tbuild\tvcs\.revision='
-stdout '^\tbuild\tvcs\.time='
-stdout '^\tbuild\tvcs\.modified=false$'
-
--- repo/README --
-Far out in the uncharted backwaters of the unfashionable end of the western
-spiral arm of the Galaxy lies a small, unregarded yellow sun.
--- repo/a/go.mod --
-module example.com/a
-
-go 1.18
--- repo/a/a.go --
-package main
-
-func main() {}
-
--- extract_key_id.go --
-package main
-
-import "fmt"
-import "io/ioutil"
-import "os"
-import "strings"
-
-func main() {
-    err := run(os.Args[1])
-    if err != nil {
-        panic(err)
-    }
-}
-
-func run(keyInfoFilePath string) error {
-    contents, err := ioutil.ReadFile(keyInfoFilePath)
-    if err != nil {
-        return err
-    }
-    lines := strings.Split(string(contents), "\n")
-    for _, line := range lines {
-        fields := strings.Split(line, ":")
-        if fields[0] == "sec" {
-            fmt.Print(fields[4])
-            return nil
-        }
-    }
-    return fmt.Errorf("key ID not found in: %s", keyInfoFilePath)
-}
-
--- configure_signing_key.go --
-package main
-
-import "io/ioutil"
-import "os"
-import "os/exec"
-
-func main() {
-    err := run(os.Args[1])
-    if err != nil {
-        panic(err)
-    }
-}
-
-func run(keyIdFilePath string) error {
-    keyId, err := ioutil.ReadFile(keyIdFilePath)
-    if err != nil {
-        return err
-    }
-    gitCmd := exec.Command("git", "config", "user.signingKey", string(keyId))
-    return gitCmd.Run()
-}
diff --git a/src/cmd/link/internal/ppc64/asm.go b/src/cmd/link/internal/ppc64/asm.go
index 73c2718a33..879adaa965 100644
--- a/src/cmd/link/internal/ppc64/asm.go
+++ b/src/cmd/link/internal/ppc64/asm.go
@@ -809,8 +809,9 @@ func trampoline(ctxt *ld.Link, ldr *loader.Loader, ri int, rs, s loader.Sym) {
 				if ldr.SymValue(tramp) == 0 {
 					break
 				}
-
-				t = ldr.SymValue(tramp) + r.Add() - (ldr.SymValue(s) + int64(r.Off()))
+				// Note, the trampoline is always called directly. The addend of the original relocation is accounted for in the
+				// trampoline itself.
+				t = ldr.SymValue(tramp) - (ldr.SymValue(s) + int64(r.Off()))
 
 				// With internal linking, the trampoline can be used if it is not too far.
 				// With external linking, the trampoline must be in this section for it to be reused.
diff --git a/src/crypto/x509/internal/macos/corefoundation.go b/src/crypto/x509/internal/macos/corefoundation.go
index 75c212910b..2b20b52dc6 100644
--- a/src/crypto/x509/internal/macos/corefoundation.go
+++ b/src/crypto/x509/internal/macos/corefoundation.go
@@ -184,6 +184,13 @@ func CFErrorCopyDescription(errRef CFRef) CFRef {
 }
 func x509_CFErrorCopyDescription_trampoline()
 
+//go:cgo_import_dynamic x509_CFErrorGetCode CFErrorGetCode "/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation"
+
+func CFErrorGetCode(errRef CFRef) int {
+	return int(syscall(abi.FuncPCABI0(x509_CFErrorGetCode_trampoline), uintptr(errRef), 0, 0, 0, 0, 0))
+}
+func x509_CFErrorGetCode_trampoline()
+
 //go:cgo_import_dynamic x509_CFStringCreateExternalRepresentation CFStringCreateExternalRepresentation "/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation"
 
 func CFStringCreateExternalRepresentation(strRef CFRef) CFRef {
diff --git a/src/crypto/x509/internal/macos/corefoundation.s b/src/crypto/x509/internal/macos/corefoundation.s
index d69f72f795..49cd084467 100644
--- a/src/crypto/x509/internal/macos/corefoundation.s
+++ b/src/crypto/x509/internal/macos/corefoundation.s
@@ -37,5 +37,7 @@ TEXT ·x509_CFDataCreate_trampoline(SB),NOSPLIT,$0-0
 	JMP x509_CFDataCreate(SB)
 TEXT ·x509_CFErrorCopyDescription_trampoline(SB),NOSPLIT,$0-0
 	JMP x509_CFErrorCopyDescription(SB)
+TEXT ·x509_CFErrorGetCode_trampoline(SB),NOSPLIT,$0-0
+	JMP x509_CFErrorGetCode(SB)
 TEXT ·x509_CFStringCreateExternalRepresentation_trampoline(SB),NOSPLIT,$0-0
 	JMP x509_CFStringCreateExternalRepresentation(SB)
diff --git a/src/crypto/x509/internal/macos/security.go b/src/crypto/x509/internal/macos/security.go
index ef64bda49f..0b7958eaa2 100644
--- a/src/crypto/x509/internal/macos/security.go
+++ b/src/crypto/x509/internal/macos/security.go
@@ -8,7 +8,6 @@ package macOS
 
 import (
 	"errors"
-	"fmt"
 	"internal/abi"
 	"strconv"
 	"unsafe"
@@ -51,6 +50,15 @@ const (
 	SecTrustSettingsDomainSystem
 )
 
+const (
+	// various macOS error codes that can be returned from
+	// SecTrustEvaluateWithError that we can map to Go cert
+	// verification error types.
+	ErrSecCertificateExpired = -67818
+	ErrSecHostNameMismatch   = -67602
+	ErrSecNotTrusted         = -67843
+)
+
 type OSStatus struct {
 	call   string
 	status int32
@@ -190,17 +198,18 @@ func x509_SecTrustGetResult_trampoline()
 
 //go:cgo_import_dynamic x509_SecTrustEvaluateWithError SecTrustEvaluateWithError "/System/Library/Frameworks/Security.framework/Versions/A/Security"
 
-func SecTrustEvaluateWithError(trustObj CFRef) error {
+func SecTrustEvaluateWithError(trustObj CFRef) (int, error) {
 	var errRef CFRef
 	ret := syscall(abi.FuncPCABI0(x509_SecTrustEvaluateWithError_trampoline), uintptr(trustObj), uintptr(unsafe.Pointer(&errRef)), 0, 0, 0, 0)
 	if int32(ret) != 1 {
 		errStr := CFErrorCopyDescription(errRef)
-		err := fmt.Errorf("x509: %s", CFStringToString(errStr))
+		err := errors.New(CFStringToString(errStr))
+		errCode := CFErrorGetCode(errRef)
 		CFRelease(errRef)
 		CFRelease(errStr)
-		return err
+		return errCode, err
 	}
-	return nil
+	return 0, nil
 }
 func x509_SecTrustEvaluateWithError_trampoline()
 
diff --git a/src/crypto/x509/root_darwin.go b/src/crypto/x509/root_darwin.go
index ad365f577e..c35885ace8 100644
--- a/src/crypto/x509/root_darwin.go
+++ b/src/crypto/x509/root_darwin.go
@@ -7,6 +7,7 @@ package x509
 import (
 	macOS "crypto/x509/internal/macos"
 	"errors"
+	"fmt"
 )
 
 func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
@@ -54,8 +55,17 @@ func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate
 	// always enforce its SCT requirements, and there are still _some_ people
 	// using TLS or OCSP for that.
 
-	if err := macOS.SecTrustEvaluateWithError(trustObj); err != nil {
-		return nil, err
+	if ret, err := macOS.SecTrustEvaluateWithError(trustObj); err != nil {
+		switch ret {
+		case macOS.ErrSecCertificateExpired:
+			return nil, CertificateInvalidError{c, Expired, err.Error()}
+		case macOS.ErrSecHostNameMismatch:
+			return nil, HostnameError{c, opts.DNSName}
+		case macOS.ErrSecNotTrusted:
+			return nil, UnknownAuthorityError{Cert: c}
+		default:
+			return nil, fmt.Errorf("x509: %s", err)
+		}
 	}
 
 	chain := [][]*Certificate{{}}
diff --git a/src/crypto/x509/root_darwin_test.go b/src/crypto/x509/root_darwin_test.go
index 90a464f624..299cecf556 100644
--- a/src/crypto/x509/root_darwin_test.go
+++ b/src/crypto/x509/root_darwin_test.go
@@ -42,23 +42,23 @@ func TestPlatformVerifier(t *testing.T) {
 		{
 			name:        "expired leaf",
 			host:        "expired.badssl.com",
-			expectedErr: "x509: “*.badssl.com” certificate is expired",
+			expectedErr: "x509: certificate has expired or is not yet valid: “*.badssl.com” certificate is expired",
 		},
 		{
 			name:        "wrong host for leaf",
 			host:        "wrong.host.badssl.com",
 			verifyName:  "wrong.host.badssl.com",
-			expectedErr: "x509: “*.badssl.com” certificate name does not match input",
+			expectedErr: "x509: certificate is valid for *.badssl.com, badssl.com, not wrong.host.badssl.com",
 		},
 		{
 			name:        "self-signed leaf",
 			host:        "self-signed.badssl.com",
-			expectedErr: "x509: “*.badssl.com” certificate is not trusted",
+			expectedErr: "x509: certificate signed by unknown authority",
 		},
 		{
 			name:        "untrusted root",
 			host:        "untrusted-root.badssl.com",
-			expectedErr: "x509: “BadSSL Untrusted Root Certificate Authority” certificate is not trusted",
+			expectedErr: "x509: certificate signed by unknown authority",
 		},
 		{
 			name:        "revoked leaf",
@@ -74,7 +74,7 @@ func TestPlatformVerifier(t *testing.T) {
 			name:        "expired leaf (custom time)",
 			host:        "google.com",
 			verifyTime:  time.Time{}.Add(time.Hour),
-			expectedErr: "x509: “*.google.com” certificate is expired",
+			expectedErr: "x509: certificate has expired or is not yet valid: “*.google.com” certificate is expired",
 		},
 		{
 			name:       "valid chain (custom time)",
diff --git a/src/go.mod b/src/go.mod
index 4613bb6825..e11c6d7df8 100644
--- a/src/go.mod
+++ b/src/go.mod
@@ -4,7 +4,7 @@ go 1.18
 
 require (
 	golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3
-	golang.org/x/net v0.0.0-20220907013725-0a43f88f7ef0
+	golang.org/x/net v0.0.0-20221214163811-6143a133e5c9
 )
 
 require (
diff --git a/src/go.sum b/src/go.sum
index 07cb8d82d5..d2bfed64dc 100644
--- a/src/go.sum
+++ b/src/go.sum
@@ -1,7 +1,7 @@
 golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3 h1:0es+/5331RGQPcXlMfP+WrnIIS6dNnNRe0WB02W0F4M=
 golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/net v0.0.0-20220907013725-0a43f88f7ef0 h1:XXaSUSplyi6wsRNJGB7vUBvDjbxc8UPYBsf9ukBQ3KA=
-golang.org/x/net v0.0.0-20220907013725-0a43f88f7ef0/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20221214163811-6143a133e5c9 h1:gcbGP3ZkgsHGpX/48qvg7Q/YmTtzZRWc/zpvN8XGSBg=
+golang.org/x/net v0.0.0-20221214163811-6143a133e5c9/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5 h1:y/woIyUBFbpQGKS0u1aHF/40WUDnek3fPOyD08H5Vng=
 golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.8-0.20211105212822-18b340fc7af2 h1:GLw7MR8AfAG2GmGcmVgObFOHXYypgGjnGno25RDwn3Y=
diff --git a/src/internal/poll/sock_cloexec.go b/src/internal/poll/sock_cloexec.go
index d849fda0b0..4c70abd9b1 100644
--- a/src/internal/poll/sock_cloexec.go
+++ b/src/internal/poll/sock_cloexec.go
@@ -5,7 +5,7 @@
 // This file implements accept for platforms that provide a fast path for
 // setting SetNonblock and CloseOnExec.
 
-//go:build dragonfly || freebsd || illumos || linux || netbsd || openbsd
+//go:build dragonfly || freebsd || illumos || (linux && !arm) || netbsd || openbsd
 
 package poll
 
diff --git a/src/internal/poll/sock_cloexec_accept.go b/src/internal/poll/sock_cloexec_accept.go
new file mode 100644
index 0000000000..4b86de59e0
--- /dev/null
+++ b/src/internal/poll/sock_cloexec_accept.go
@@ -0,0 +1,51 @@
+// Copyright 2013 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.
+
+// This file implements accept for platforms that provide a fast path for
+// setting SetNonblock and CloseOnExec, but don't necessarily have accept4.
+// This is the code we used for accept in Go 1.17 and earlier.
+// On Linux the accept4 system call was introduced in 2.6.28 kernel,
+// and our minimum requirement is 2.6.32, so we simplified the function.
+// Unfortunately, on ARM accept4 wasn't added until 2.6.36, so for ARM
+// only we continue using the older code.
+
+//go:build linux && arm
+
+package poll
+
+import "syscall"
+
+// Wrapper around the accept system call that marks the returned file
+// descriptor as nonblocking and close-on-exec.
+func accept(s int) (int, syscall.Sockaddr, string, error) {
+	ns, sa, err := Accept4Func(s, syscall.SOCK_NONBLOCK|syscall.SOCK_CLOEXEC)
+	switch err {
+	case nil:
+		return ns, sa, "", nil
+	default: // errors other than the ones listed
+		return -1, sa, "accept4", err
+	case syscall.ENOSYS: // syscall missing
+	case syscall.EINVAL: // some Linux use this instead of ENOSYS
+	case syscall.EACCES: // some Linux use this instead of ENOSYS
+	case syscall.EFAULT: // some Linux use this instead of ENOSYS
+	}
+
+	// See ../syscall/exec_unix.go for description of ForkLock.
+	// It is probably okay to hold the lock across syscall.Accept
+	// because we have put fd.sysfd into non-blocking mode.
+	// However, a call to the File method will put it back into
+	// blocking mode. We can't take that risk, so no use of ForkLock here.
+	ns, sa, err = AcceptFunc(s)
+	if err == nil {
+		syscall.CloseOnExec(ns)
+	}
+	if err != nil {
+		return -1, nil, "accept", err
+	}
+	if err = syscall.SetNonblock(ns, true); err != nil {
+		CloseFunc(ns)
+		return -1, nil, "setnonblock", err
+	}
+	return ns, sa, "", nil
+}
diff --git a/src/net/http/h2_bundle.go b/src/net/http/h2_bundle.go
index 381f91c8ad..3a21ecac3d 100644
--- a/src/net/http/h2_bundle.go
+++ b/src/net/http/h2_bundle.go
@@ -5760,12 +5760,6 @@ func (sc *http2serverConn) newWriterAndRequest(st *http2stream, f *http2MetaHead
 		return nil, nil, sc.countError("bad_path_method", http2streamError(f.StreamID, http2ErrCodeProtocol))
 	}
 
-	bodyOpen := !f.StreamEnded()
-	if rp.method == "HEAD" && bodyOpen {
-		// HEAD requests can't have bodies
-		return nil, nil, sc.countError("head_body", http2streamError(f.StreamID, http2ErrCodeProtocol))
-	}
-
 	rp.header = make(Header)
 	for _, hf := range f.RegularFields() {
 		rp.header.Add(sc.canonicalHeader(hf.Name), hf.Value)
@@ -5778,6 +5772,7 @@ func (sc *http2serverConn) newWriterAndRequest(st *http2stream, f *http2MetaHead
 	if err != nil {
 		return nil, nil, err
 	}
+	bodyOpen := !f.StreamEnded()
 	if bodyOpen {
 		if vv, ok := rp.header["Content-Length"]; ok {
 			if cl, err := strconv.ParseUint(vv[0], 10, 63); err == nil {
diff --git a/src/net/lookup_test.go b/src/net/lookup_test.go
index 655543c7d2..32e7f8ef99 100644
--- a/src/net/lookup_test.go
+++ b/src/net/lookup_test.go
@@ -49,21 +49,21 @@ var lookupGoogleSRVTests = []struct {
 	cname, target        string
 }{
 	{
-		"xmpp-server", "tcp", "google.com",
+		"ldap", "tcp", "google.com",
 		"google.com.", "google.com.",
 	},
 	{
-		"xmpp-server", "tcp", "google.com.",
+		"ldap", "tcp", "google.com.",
 		"google.com.", "google.com.",
 	},
 
 	// non-standard back door
 	{
-		"", "", "_xmpp-server._tcp.google.com",
+		"", "", "_ldap._tcp.google.com",
 		"google.com.", "google.com.",
 	},
 	{
-		"", "", "_xmpp-server._tcp.google.com.",
+		"", "", "_ldap._tcp.google.com.",
 		"google.com.", "google.com.",
 	},
 }
@@ -71,10 +71,6 @@ var lookupGoogleSRVTests = []struct {
 var backoffDuration = [...]time.Duration{time.Second, 5 * time.Second, 30 * time.Second}
 
 func TestLookupGoogleSRV(t *testing.T) {
-	// TODO(mknyszek): Figure out next steps for this test. This is just
-	// a quick fix.
-	t.Skip("fails consistently due to an upstream DNS change; see #56707.")
-
 	t.Parallel()
 	mustHaveExternalNetwork(t)
 
@@ -635,10 +631,6 @@ func TestLookupDotsWithLocalSource(t *testing.T) {
 }
 
 func TestLookupDotsWithRemoteSource(t *testing.T) {
-	// TODO(mknyszek): Figure out next steps for this test. This is just
-	// a quick fix.
-	t.Skip("fails consistently due to an upstream DNS change; see #56707.")
-
 	if runtime.GOOS == "darwin" || runtime.GOOS == "ios" {
 		testenv.SkipFlaky(t, 27992)
 	}
@@ -709,16 +701,16 @@ func testDots(t *testing.T, mode string) {
 		}
 	}
 
-	cname, srvs, err := LookupSRV("xmpp-server", "tcp", "google.com")
+	cname, srvs, err := LookupSRV("ldap", "tcp", "google.com")
 	if err != nil {
-		t.Errorf("LookupSRV(xmpp-server, tcp, google.com): %v (mode=%v)", err, mode)
+		t.Errorf("LookupSRV(ldap, tcp, google.com): %v (mode=%v)", err, mode)
 	} else {
 		if !hasSuffixFold(cname, ".google.com.") {
-			t.Errorf("LookupSRV(xmpp-server, tcp, google.com) returned cname=%v, want name ending in .google.com. with trailing dot (mode=%v)", cname, mode)
+			t.Errorf("LookupSRV(ldap, tcp, google.com) returned cname=%v, want name ending in .google.com. with trailing dot (mode=%v)", cname, mode)
 		}
 		for _, srv := range srvs {
 			if !hasSuffixFold(srv.Target, ".google.com.") {
-				t.Errorf("LookupSRV(xmpp-server, tcp, google.com) returned addrs=%v, want names ending in .google.com. with trailing dot (mode=%v)", srvString(srvs), mode)
+				t.Errorf("LookupSRV(ldap, tcp, google.com) returned addrs=%v, want names ending in .google.com. with trailing dot (mode=%v)", srvString(srvs), mode)
 				break
 			}
 		}
diff --git a/src/os/os_test.go b/src/os/os_test.go
index 4124be13cc..3721e15027 100644
--- a/src/os/os_test.go
+++ b/src/os/os_test.go
@@ -252,9 +252,11 @@ func TestLstat(t *testing.T) {
 	if !equal(sfname, dir.Name()) {
 		t.Error("name should be ", sfname, "; is", dir.Name())
 	}
-	filesize := size(path, t)
-	if dir.Size() != filesize {
-		t.Error("size should be", filesize, "; is", dir.Size())
+	if dir.Mode()&ModeSymlink == 0 {
+		filesize := size(path, t)
+		if dir.Size() != filesize {
+			t.Error("size should be", filesize, "; is", dir.Size())
+		}
 	}
 }
 
diff --git a/src/runtime/internal/atomic/atomic_test.go b/src/runtime/internal/atomic/atomic_test.go
index 2ae60b8507..2427bfd211 100644
--- a/src/runtime/internal/atomic/atomic_test.go
+++ b/src/runtime/internal/atomic/atomic_test.go
@@ -345,6 +345,36 @@ func TestBitwiseContended(t *testing.T) {
 	}
 }
 
+func TestCasRel(t *testing.T) {
+	const _magic = 0x5a5aa5a5
+	var x struct {
+		before uint32
+		i      uint32
+		after  uint32
+		o      uint32
+		n      uint32
+	}
+
+	x.before = _magic
+	x.after = _magic
+	for j := 0; j < 32; j += 1 {
+		x.i = (1 << j) + 0
+		x.o = (1 << j) + 0
+		x.n = (1 << j) + 1
+		if !atomic.CasRel(&x.i, x.o, x.n) {
+			t.Fatalf("should have swapped %#x %#x", x.o, x.n)
+		}
+
+		if x.i != x.n {
+			t.Fatalf("wrong x.i after swap: x.i=%#x x.n=%#x", x.i, x.n)
+		}
+
+		if x.before != _magic || x.after != _magic {
+			t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, _magic, _magic)
+		}
+	}
+}
+
 func TestStorepNoWB(t *testing.T) {
 	var p [2]*int
 	for i := range p {
diff --git a/src/syscall/syscall_linux.go b/src/syscall/syscall_linux.go
index f32020ca6c..f694d8ca35 100644
--- a/src/syscall/syscall_linux.go
+++ b/src/syscall/syscall_linux.go
@@ -546,21 +546,6 @@ func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {
 	return nil, EAFNOSUPPORT
 }
 
-func Accept(fd int) (nfd int, sa Sockaddr, err error) {
-	var rsa RawSockaddrAny
-	var len _Socklen = SizeofSockaddrAny
-	nfd, err = accept4(fd, &rsa, &len, 0)
-	if err != nil {
-		return
-	}
-	sa, err = anyToSockaddr(&rsa)
-	if err != nil {
-		Close(nfd)
-		nfd = 0
-	}
-	return
-}
-
 func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) {
 	var rsa RawSockaddrAny
 	var len _Socklen = SizeofSockaddrAny
diff --git a/src/syscall/syscall_linux_accept.go b/src/syscall/syscall_linux_accept.go
new file mode 100644
index 0000000000..2ba60f0636
--- /dev/null
+++ b/src/syscall/syscall_linux_accept.go
@@ -0,0 +1,32 @@
+// Copyright 2009 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.
+
+// We require Linux kernel version 2.6.32. The accept4 system call was
+// added in version 2.6.28, so in general we can use accept4.
+// Unfortunately, for ARM only, accept4 was added in version 2.6.36.
+// Handle that case here, by using a copy of the Accept function that
+// we used in Go 1.17.
+
+//go:build linux && arm
+
+package syscall
+
+func Accept(fd int) (nfd int, sa Sockaddr, err error) {
+	var rsa RawSockaddrAny
+	var len _Socklen = SizeofSockaddrAny
+	// Try accept4 first for Android and newer kernels.
+	nfd, err = accept4(fd, &rsa, &len, 0)
+	if err == ENOSYS {
+		nfd, err = accept(fd, &rsa, &len)
+	}
+	if err != nil {
+		return
+	}
+	sa, err = anyToSockaddr(&rsa)
+	if err != nil {
+		Close(nfd)
+		nfd = 0
+	}
+	return
+}
diff --git a/src/syscall/syscall_linux_accept4.go b/src/syscall/syscall_linux_accept4.go
new file mode 100644
index 0000000000..74898672c0
--- /dev/null
+++ b/src/syscall/syscall_linux_accept4.go
@@ -0,0 +1,25 @@
+// Copyright 2009 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.
+
+// This file provides the Accept function used on all systems
+// other than arm. See syscall_linux_accept.go for why.
+
+//go:build linux && !arm
+
+package syscall
+
+func Accept(fd int) (nfd int, sa Sockaddr, err error) {
+	var rsa RawSockaddrAny
+	var len _Socklen = SizeofSockaddrAny
+	nfd, err = accept4(fd, &rsa, &len, 0)
+	if err != nil {
+		return
+	}
+	sa, err = anyToSockaddr(&rsa)
+	if err != nil {
+		Close(nfd)
+		nfd = 0
+	}
+	return
+}
diff --git a/src/vendor/modules.txt b/src/vendor/modules.txt
index 109a99e44a..157c1fe602 100644
--- a/src/vendor/modules.txt
+++ b/src/vendor/modules.txt
@@ -9,7 +9,7 @@ golang.org/x/crypto/curve25519/internal/field
 golang.org/x/crypto/hkdf
 golang.org/x/crypto/internal/poly1305
 golang.org/x/crypto/internal/subtle
-# golang.org/x/net v0.0.0-20220907013725-0a43f88f7ef0
+# golang.org/x/net v0.0.0-20221214163811-6143a133e5c9
 ## explicit; go 1.17
 golang.org/x/net/dns/dnsmessage
 golang.org/x/net/http/httpguts
diff --git a/test/fixedbugs/issue57184.go b/test/fixedbugs/issue57184.go
new file mode 100644
index 0000000000..1384b50be8
--- /dev/null
+++ b/test/fixedbugs/issue57184.go
@@ -0,0 +1,40 @@
+// run
+
+// Copyright 2022 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 main
+
+import (
+	"log"
+	"reflect"
+	"sort"
+)
+
+func main() {
+	const length = 257
+	x := make([]int64, length)
+	for i := 0; i < length; i++ {
+		x[i] = int64(i) * 27644437 % int64(length)
+	}
+
+	isLessStatic := func(i, j int) bool {
+		return x[i] < x[j]
+	}
+
+	isLessReflect := reflect.MakeFunc(reflect.TypeOf(isLessStatic), func(args []reflect.Value) []reflect.Value {
+		i := args[0].Int()
+		j := args[1].Int()
+		b := x[i] < x[j]
+		return []reflect.Value{reflect.ValueOf(b)}
+	}).Interface().(func(i, j int) bool)
+
+	sort.SliceStable(x, isLessReflect)
+
+	for i := 0; i < length-1; i++ {
+		if x[i] >= x[i+1] {
+			log.Fatalf("not sorted! (length=%v, idx=%v)\n%v\n", length, i, x)
+		}
+	}
+}