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add AFL_TRY_AFFINITY

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This commit is contained in:
vanhauser-thc
2021-05-25 10:45:24 +02:00
parent 8e75adfee5
commit 87b16c4460
9 changed files with 46 additions and 17 deletions
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34
src/afl-fuzz-init.c
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@ -113,7 +113,7 @@ void bind_to_free_cpu(afl_state_t *afl) {
u8 lockfile[PATH_MAX] = "";
s32 i;
if (afl->afl_env.afl_no_affinity) {
if (afl->afl_env.afl_no_affinity && !afl->afl_env.afl_try_affinity) {
if (afl->cpu_to_bind != -1) {
@ -130,10 +130,21 @@ void bind_to_free_cpu(afl_state_t *afl) {
if (!bind_cpu(afl, afl->cpu_to_bind)) {
FATAL(
"Could not bind to requested CPU %d! Make sure you passed a valid "
"-b.",
afl->cpu_to_bind);
if (afl->afl_env.afl_try_affinity) {
WARNF(
"Could not bind to requested CPU %d! Make sure you passed a valid "
"-b.",
afl->cpu_to_bind);
} else {
FATAL(
"Could not bind to requested CPU %d! Make sure you passed a valid "
"-b.",
afl->cpu_to_bind);
}
}
@ -420,11 +431,14 @@ void bind_to_free_cpu(afl_state_t *afl) {
"Uh-oh, looks like all %d CPU cores on your system are allocated to\n"
" other instances of afl-fuzz (or similar CPU-locked tasks). "
"Starting\n"
" another fuzzer on this machine is probably a bad plan, but if "
"you are\n"
" absolutely sure, you can set AFL_NO_AFFINITY and try again.\n",
afl->cpu_core_count);
FATAL("No more free CPU cores");
" another fuzzer on this machine is probably a bad plan.\n"
"%s",
afl->cpu_core_count,
afl->afl_env.afl_try_affinity ? ""
: " If you are sure, you can set "
"AFL_NO_AFFINITY and try again.\n");
if (!afl->afl_env.afl_try_affinity) { FATAL("No more free CPU cores"); }
}