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fix 32-bit mode, fix weighting

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This commit is contained in:
van Hauser
2020-12-30 10:34:22 +01:00
parent 5d560c1ece
commit 0246fe9200
5 changed files with 51 additions and 37 deletions
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43
src/afl-fuzz-queue.c
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@ -97,30 +97,43 @@ void create_alias_table(afl_state_t *afl) {
double avg_exec_us = 0.0;
double avg_bitmap_size = 0.0;
for (i = 0; i < n; i++) {
struct queue_entry *q = afl->queue_buf[i];
avg_exec_us += q->exec_us;
avg_bitmap_size += log(q->bitmap_size);
}
avg_exec_us /= afl->queued_paths;
avg_bitmap_size /= afl->queued_paths;
u32 active = 0;
for (i = 0; i < n; i++) {
struct queue_entry *q = afl->queue_buf[i];
q->weight = q->disabled ? 0 : compute_weight(afl, q, avg_exec_us, avg_bitmap_size);
q->perf_score = q->disabled ? 0 : calculate_score(afl, q);
// disabled entries might have timings and bitmap values
if (likely(!q->disabled)) {
sum += q->weight;
avg_exec_us += q->exec_us;
avg_bitmap_size += log(q->bitmap_size);
++active;
}
}
avg_exec_us /= active;
avg_bitmap_size /= active;
for (i = 0; i < n; i++) {
struct queue_entry *q = afl->queue_buf[i];
if (likely(!q->disabled)) {
q->weight = compute_weight(afl, q, avg_exec_us, avg_bitmap_size);
q->perf_score = calculate_score(afl, q);
sum += q->weight;
}
}
for (i = 0; i < n; i++) {
// weight is always 0 for disabled entries
P[i] = (afl->queue_buf[i]->weight * n) / sum;
}
@ -139,8 +152,8 @@ void create_alias_table(afl_state_t *afl) {
for (i = 0; i < n; i++) {
struct queue_entry *q = afl->queue_buf[i];
P[i] = (q->perf_score * n) / sum;
// perf_score is always 0 for disabled entries
P[i] = (afl->queue_buf[i]->perf_score * n) / sum;
}