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| author | Daniil Kuts <13482580+apach301@users.noreply.github.com> | 2022-05-27 13:52:31 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-05-27 12:52:31 +0200 |
| commit | c96238d85f4a784402db6cbf16630b977617eb1a (patch) | |
| tree | 426799e929930c90ce2619b1aaa9944c6d400502 /src | |
| parent | 4103ee43e249ee14bd16baf080489a107bbfdbf5 (diff) | |
| download | afl++-c96238d85f4a784402db6cbf16630b977617eb1a.tar.gz | |
Add AFL_SYNC_TIME variable for synchronization time tuning (#1425)
* Add AFL_SYNC_TIME variable for synchronization time tuning
* Documentation for AFL_SYNC_TIME variable
Diffstat (limited to 'src')
| -rw-r--r-- | src/afl-fuzz-state.c | 12 | ||||
| -rw-r--r-- | src/afl-fuzz.c | 5 |
2 files changed, 15 insertions, 2 deletions
diff --git a/src/afl-fuzz-state.c b/src/afl-fuzz-state.c index 98217438..cbe32c75 100644 --- a/src/afl-fuzz-state.c +++ b/src/afl-fuzz-state.c @@ -101,6 +101,7 @@ void afl_state_init(afl_state_t *afl, uint32_t map_size) { afl->stats_update_freq = 1; afl->stats_avg_exec = 0; afl->skip_deterministic = 1; + afl->sync_time = SYNC_TIME; afl->cmplog_lvl = 2; afl->min_length = 1; afl->max_length = MAX_FILE; @@ -519,6 +520,17 @@ void read_afl_environment(afl_state_t *afl, char **envp) { } + } else if (!strncmp(env, "AFL_SYNC_TIME", + + afl_environment_variable_len)) { + + int time = atoi((u8 *)get_afl_env(afl_environment_variables[i])); + if (time > 0) { + afl->sync_time = time * (60 * 1000LL); + } else { + WARNF("incorrect value for AFL_SYNC_TIME environment variable, " + "used default value %lld instead.", afl->sync_time / 60 / 1000); + } } } else { diff --git a/src/afl-fuzz.c b/src/afl-fuzz.c index c5ab364a..7c33ba29 100644 --- a/src/afl-fuzz.c +++ b/src/afl-fuzz.c @@ -295,6 +295,7 @@ static void usage(u8 *argv0, int more_help) { "AFL_STATSD_TAGS_FLAVOR: set statsd tags format (default: disable tags)\n" " Supported formats are: 'dogstatsd', 'librato',\n" " 'signalfx' and 'influxdb'\n" + "AFL_SYNC_TIME: sync time between fuzzing instances (in minutes)\n" "AFL_TESTCACHE_SIZE: use a cache for testcases, improves performance (in MB)\n" "AFL_TMPDIR: directory to use for input file generation (ramdisk recommended)\n" "AFL_EARLY_FORKSERVER: force an early forkserver in an afl-clang-fast/\n" @@ -2511,7 +2512,7 @@ int main(int argc, char **argv_orig, char **envp) { if (unlikely(afl->is_main_node)) { if (unlikely(get_cur_time() > - (SYNC_TIME >> 1) + afl->last_sync_time)) { + (afl->sync_time >> 1) + afl->last_sync_time)) { if (!(sync_interval_cnt++ % (SYNC_INTERVAL / 3))) { @@ -2523,7 +2524,7 @@ int main(int argc, char **argv_orig, char **envp) { } else { - if (unlikely(get_cur_time() > SYNC_TIME + afl->last_sync_time)) { + if (unlikely(get_cur_time() > afl->sync_time + afl->last_sync_time)) { if (!(sync_interval_cnt++ % SYNC_INTERVAL)) { sync_fuzzers(afl); } |