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fix shmem

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This commit is contained in:
van Hauser
2020-06-13 13:47:43 +02:00
parent 1542c7f49c
commit fc26001b50
1 changed files with 28 additions and 1 deletions
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29
src/afl-fuzz-run.c
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@ -142,7 +142,34 @@ static void write_with_gap(afl_state_t *afl, void *mem, u32 len, u32 skip_at,
s32 fd = afl->fsrv.out_fd; s32 fd = afl->fsrv.out_fd;
u32 tail_len = len - skip_at - skip_len; u32 tail_len = len - skip_at - skip_len;
if (afl->fsrv.out_file) { if (afl->fsrv.shmem_fuzz) {
if (skip_at) { memcpy(afl->fsrv.shmem_fuzz, mem, skip_at); }
if (tail_len) {
memcpy(afl->fsrv.shmem_fuzz + skip_at, (u8*)mem + skip_at + skip_len, tail_len);
}
*afl->fsrv.shmem_fuzz_len = len - skip_len;
#ifdef _DEBUG
fprintf(stderr, "FS crc: %08x len: %u\n",
hash64(fsrv->shmem_fuzz, *fsrv->shmem_fuzz_len, 0xa5b35705),
*fsrv->shmem_fuzz_len);
fprintf(stderr, "SHM :");
for (int i = 0; i < *fsrv->shmem_fuzz_len; i++)
fprintf(stderr, "%02x", fsrv->shmem_fuzz[i]);
fprintf(stderr, "\nORIG:");
for (int i = 0; i < *fsrv->shmem_fuzz_len; i++)
fprintf(stderr, "%02x", buf[i]);
fprintf(stderr, "\n");
#endif
return;
} else if (afl->fsrv.out_file) {
if (afl->no_unlink) { if (afl->no_unlink) {