Tracking fuzzing time on engine fuzzers #4356
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vitorguidi
commented
Oct 23, 2024
| @@ -1507,7 +1511,7 @@ def do_engine_fuzzing(self, engine_impl): | |||
| logs.error(f'{self.fuzz_target.binary} is not in the build.') | |||
| return [], {} | |||
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| fuzzer_metadata.update(current_fuzzer_metadata) | |||
| fuzzer_metadata.update(cur_fuzzer_metadata) | |||
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This is to avoid linting failure due to a line too long
oliverchang
approved these changes
Oct 23, 2024
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Motivation
Clusterfuzz only tracks fuzzing time for blackbox fuzzers at the moment, this PR extends the tracking to engine fuzzers as well by emmiting the JOB_TOTAL_FUZZ_TIME and FUZZER_TOTAL_FUZZ_TIME metrics.
Since all engine fuzzing is single process/single threaded, it suffices to track start and end time for each test case run. The only difference in behavior is that only libfuzzer indicates a timeout, and thus all other engines are expected to concentrate their metrics on timeout=False.
Testing strategy
Ran a fuzz task locally and verified the code path for _TrackFuzzTime is reached and produces sane output.
Command used:
Part of #4271