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better new weighting

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This commit is contained in:
vanhauser-thc 2023-04-05 13:07:22 +02:00
parent 36127fb197
commit dba93705a7
1 changed files with 7 additions and 5 deletions
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12
src/afl-fuzz-queue.c
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@ -74,14 +74,16 @@ double compute_weight(afl_state_t *afl, struct queue_entry *q,
if (likely(afl->schedule < RARE)) { weight *= (avg_exec_us / q->exec_us); } if (likely(afl->schedule < RARE)) { weight *= (avg_exec_us / q->exec_us); }
weight *= (log(q->bitmap_size) / avg_bitmap_size); weight *= (log(q->bitmap_size) / avg_bitmap_size);
weight *= (1 + (q->tc_ref / avg_top_size)); weight *= (1 + (q->tc_ref / avg_top_size));
if (unlikely(afl->prefer_new)) {
weight *= (2.0 * ((1 + q->id) / afl->queued_items));
}
if (unlikely(weight < 0.1)) { weight = 0.1; } if (unlikely(weight < 0.1)) { weight = 0.1; }
if (unlikely(q->favored)) { weight *= 5; } if (unlikely(q->favored)) { weight *= 5; }
if (unlikely(!q->was_fuzzed)) { weight *= 2; } if (unlikely(!q->was_fuzzed)) { weight *= 2; }
if (unlikely(afl->prefer_new)) {
weight *= (2.0 * (q->id / (afl->queued_items - 1)));
}
return weight; return weight;