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deterministic fuzzing and -z

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vanhauser-thc
2024-02-03 13:31:31 +01:00
parent 68dc4829b3
commit d85722a4f6
3 changed files with 13 additions and 13 deletions
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5
docs/Changelog.md
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@ -3,6 +3,11 @@
This is the list of all noteworthy changes made in every public
release of the tool. See README.md for the general instruction manual.
### Version ++4.20a (dev)
- afl-fuzz:
- the new deterministic fuzzing feature is now activated by default,
deactivate with -z. Parameters -d and -D are ignored.
### Version ++4.10c (release)
- afl-fuzz:
- default power schedule is now EXPLORE, due a fix in fast schedules

2
src/afl-fuzz-state.c
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@ -102,7 +102,7 @@ void afl_state_init(afl_state_t *afl, uint32_t map_size) {
afl->stats_update_freq = 1;
afl->stats_file_update_freq_msecs = STATS_UPDATE_SEC * 1000;
afl->stats_avg_exec = 0;
afl->skip_deterministic = 1;
afl->skip_deterministic = 0;
afl->sync_time = SYNC_TIME;
afl->cmplog_lvl = 2;
afl->min_length = 1;

19
src/afl-fuzz.c
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@ -170,7 +170,6 @@ static void usage(u8 *argv0, int more_help) {
" -g minlength - set min length of generated fuzz input (default: 1)\n"
" -G maxlength - set max length of generated fuzz input (default: "
"%lu)\n"
" -D - enable (a new) effective deterministic fuzzing\n"
" -L minutes - use MOpt(imize) mode and set the time limit for "
"entering the\n"
" pacemaker mode (minutes of no new finds). 0 = "
@ -213,7 +212,8 @@ static void usage(u8 *argv0, int more_help) {
" -F path - sync to a foreign fuzzer queue directory (requires "
"-M, can\n"
" be specified up to %u times)\n"
// " -d - skip deterministic fuzzing in -M mode\n"
" -z - skip the enhanced deterministic fuzzing\n"
" (note that the old -d and -D flags are ignored.)\n"
" -T text - text banner to show on the screen\n"
" -I command - execute this command/script when a new crash is "
"found\n"
@ -955,20 +955,15 @@ int main(int argc, char **argv_orig, char **envp) {
break;
case 'D': /* partial deterministic */
case 'd':
case 'D': /* old deterministic */
afl->skip_deterministic = 0;
WARNF("Parameters -d and -D are deprecated, a new enhanced deterministic fuzzing is active by default, to disable it use -z");
break;
case 'd': /* no deterministic */
case 'z': /* no deterministic */
// this is the default and currently a lot of infrastructure enforces
// it (e.g. clusterfuzz, fuzzbench) based on that this feature
// originally was bad performance wise. We now have a better
// implementation, hence if it is activated, we do not want to
// deactivate it by such setups.
// afl->skip_deterministic = 1;
afl->skip_deterministic = 1;
break;
case 'B': /* load bitmap */