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fix(verify): enlarge fuzz buffers so slice-based kernels can be fuzzed

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petrbalvin
2026-08-02 06:12:00 +02:00
parent a2acc9b5a3
commit 801fb963c9
1 changed files with 6 additions and 1 deletions
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verify/fuzz.go
+6 -1
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@@ -221,7 +221,10 @@ func genDualArgs(rng *rand.Rand, sig funcSig, argSize int) (gasmArgs, goArgs []b
} else { } else {
declaredLen = n + 512 declaredLen = n + 512
} }
bufBytes := (declaredLen+16)*elemSize + 128 // Allocate a buffer comfortably larger than declaredLen*elemSize so
// that SIMD over-reads and functions that write slightly past len
// (e.g. decoders that trust len(src)) never touch unmapped memory.
bufBytes := declaredLen*elemSize + 8192
// Two independent buffers with identical random content. // Two independent buffers with identical random content.
buf1 := make([]byte, bufBytes) buf1 := make([]byte, bufBytes)
buf2 := make([]byte, bufBytes) buf2 := make([]byte, bufBytes)
@@ -230,6 +233,8 @@ func genDualArgs(rng *rand.Rand, sig funcSig, argSize int) (gasmArgs, goArgs []b
bufs = append(bufs, buf1, buf2) bufs = append(bufs, buf1, buf2)
putPtr(gasmArgs, off, unsafe.Pointer(&buf1[0])) putPtr(gasmArgs, off, unsafe.Pointer(&buf1[0]))
putPtr(goArgs, off, unsafe.Pointer(&buf2[0])) putPtr(goArgs, off, unsafe.Pointer(&buf2[0]))
// len and cap both equal declaredLen — the buffer is guaranteed
// to hold at least declaredLen elements plus safety margin.
putU64(gasmArgs, off+8, uint64(declaredLen)) putU64(gasmArgs, off+8, uint64(declaredLen))
putU64(gasmArgs, off+16, uint64(declaredLen)) putU64(gasmArgs, off+16, uint64(declaredLen))
putU64(goArgs, off+8, uint64(declaredLen)) putU64(goArgs, off+8, uint64(declaredLen))