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Do not fail the runner/worker if it fails to write mutants. #2182

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Merged
copybara-service merged 1 commit into from
Aug 11, 2026
+5 −11
Merged

Do not fail the runner/worker if it fails to write mutants. #2182

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6 changes: 2 additions & 4 deletions centipede/engine_worker.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -639,12 +639,10 @@ void WorkerDoMutate(const FuzzTestAdapter& adapter) {
mutant_bytes.clear();
adapter.SerializeInputContent(adapter.ctx, emitted_inputs[0],
&mutant_bytes_sink);
WORKER_CHECK_FOR_ERROR();
WorkerCheck(MutationResult::WriteMutant(MutantRef{mutant_bytes, origin},
*outputs_blobseq),
"failed to write mutant");
adapter.FreeInput(adapter.ctx, emitted_inputs[0]);
WORKER_CHECK_FOR_ERROR();
(void)MutationResult::WriteMutant(MutantRef{mutant_bytes, origin},
*outputs_blobseq);
}

for (auto input : origin_inputs) {
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10 changes: 3 additions & 7 deletions centipede/runner.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -704,13 +704,9 @@ static int MutateInputsFromShmem(BlobSequence& inputs_blobseq,
}
if (!callbacks.HasCustomMutator()) return EXIT_SUCCESS;

{
bool succ = true;
MutateInputs(callbacks, input_refs, num_mutants, [&](MutantRef mutant) {
succ = succ && MutationResult::WriteMutant(mutant, outputs_blobseq);
});
if (!succ) return EXIT_FAILURE;
}
MutateInputs(callbacks, input_refs, num_mutants, [&](MutantRef mutant) {
(void)MutationResult::WriteMutant(mutant, outputs_blobseq);
});

return EXIT_SUCCESS;
}
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