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post_process 0/NULL return support

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vanhauser-thc
2022-07-19 12:24:03 +02:00
parent b847e0f414
commit ca4a8c0f92
7 changed files with 82 additions and 15 deletions
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33
src/afl-fuzz-run.c
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@ -109,17 +109,36 @@ write_to_testcase(afl_state_t *afl, void **mem, u32 len, u32 fix) {
if (unlikely(!new_buf && new_size <= 0)) {
FATAL("Custom_post_process failed (ret: %lu)",
(long unsigned)new_size);
new_size = 0;
new_buf = new_mem;
// FATAL("Custom_post_process failed (ret: %lu)", (long
// unsigned)new_size);
} else {
new_mem = new_buf;
}
new_mem = new_buf;
}
});
if (unlikely(!new_size)) {
// perform dummy runs (fix = 1), but skip all others
if (fix) {
new_size = len;
} else {
return 0;
}
}
if (unlikely(new_size < afl->min_length && !fix)) {
new_size = afl->min_length;
@ -969,7 +988,11 @@ common_fuzz_stuff(afl_state_t *afl, u8 *out_buf, u32 len) {
u8 fault;
len = write_to_testcase(afl, (void **)&out_buf, len, 0);
if (unlikely(len = write_to_testcase(afl, (void **)&out_buf, len, 0) == 0)) {
return 0;
}
fault = fuzz_run_target(afl, &afl->fsrv, afl->fsrv.exec_tmout);