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Use AFL hash32

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This commit is contained in:
mio
2025-01-26 15:46:25 +08:00
parent c7c66bd0d6
commit 604cf2cf80
3 changed files with 4 additions and 20 deletions
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2
include/hash.h
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@ -33,8 +33,6 @@
u32 hash32(u8 *key, u32 len, u32 seed); u32 hash32(u8 *key, u32 len, u32 seed);
u64 hash64(u8 *key, u32 len, u64 seed); u64 hash64(u8 *key, u32 len, u64 seed);
u32 hash32_xxh32(u8 *key, u32 len, u32 seed);
#if 0 #if 0
The following code is disabled because xxh3 is 30% faster The following code is disabled because xxh3 is 30% faster

7
src/afl-fuzz-bitmap.c
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@ -542,9 +542,8 @@ u8 __attribute__((hot)) save_if_interesting(afl_state_t *afl, void *mem,
afl->fsrv.map_size); afl->fsrv.map_size);
simplify_trace(afl, afl->san_fsrvs[0].trace_bits); simplify_trace(afl, afl->san_fsrvs[0].trace_bits);
// cksum_simplified = hash64(afl->san_fsrvs[0].trace_bits, // Note: Original SAND implementation used XXHASH32
// afl->fsrv.map_size, HASH_CONST); cksum_simplified = hash32(afl->san_fsrvs[0].trace_bits,
cksum_simplified = hash32_xxh32(afl->san_fsrvs[0].trace_bits,
afl->fsrv.map_size, HASH_CONST); afl->fsrv.map_size, HASH_CONST);
if (unlikely(!bitmap_read(afl->simplified_n_fuzz, cksum_simplified))) { if (unlikely(!bitmap_read(afl->simplified_n_fuzz, cksum_simplified))) {
@ -570,7 +569,7 @@ u8 __attribute__((hot)) save_if_interesting(afl_state_t *afl, void *mem,
likely(afl->san_abstraction == UNIQUE_TRACE)) { likely(afl->san_abstraction == UNIQUE_TRACE)) {
cksum_unique = cksum_unique =
hash32_xxh32(afl->fsrv.trace_bits, afl->fsrv.map_size, HASH_CONST); hash32(afl->fsrv.trace_bits, afl->fsrv.map_size, HASH_CONST);
if (unlikely(!bitmap_read(afl->n_fuzz_dup, cksum) && if (unlikely(!bitmap_read(afl->n_fuzz_dup, cksum) &&
fault == afl->crash_mode)) { fault == afl->crash_mode)) {

13
src/afl-performance.c
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@ -424,16 +424,3 @@ char *sha1_hex_for_file(const char *fname, u32 len) {
return hex; return hex;
} }
#ifdef _DEBUG
u32 hash32_xxh32(u8 *key, u32 len, u32 seed) {
#else
inline u32 hash32_xxh32(u8 *key, u32 len, u32 seed) {
#endif
(void)seed;
return (u32)XXH32(key, len, seed);
}