ExternalVendorCode/AFLplusplus
1
0
Fork 0
mirror of https://github.com/AFLplusplus/AFLplusplus.git synced 2025-06-14 19:08:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

improve performance for default power schedule

Browse Source
This commit is contained in:
van Hauser
2020-06-15 20:02:28 +02:00
parent af8d4d49ed
commit ada59feda8
5 changed files with 52 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
src/afl-fuzz-bitmap.c
View File

@ -542,24 +542,32 @@ u8 save_if_interesting(afl_state_t *afl, void *mem, u32 len, u8 fault) {
u8 hnb = '\0';
s32 fd;
u8 keeping = 0, res;
u64 cksum = 0;
u8 fn[PATH_MAX];
/* Update path frequency. */
u64 cksum = hash64(afl->fsrv.trace_bits, afl->fsrv.map_size, HASH_CONST);
struct queue_entry *q = afl->queue;
while (q) {
/* Generating a hash on every input is super expensive. Bad idea and should
only be used for special schedules */
if (unlikely(afl->schedule >= FAST && afl->schedule <= RARE)) {
if (q->exec_cksum == cksum) {
cksum = hash64(afl->fsrv.trace_bits, afl->fsrv.map_size, HASH_CONST);
q->n_fuzz = q->n_fuzz + 1;
break;
struct queue_entry *q = afl->queue;
while (q) {
if (q->exec_cksum == cksum) {
q->n_fuzz = q->n_fuzz + 1;
break;
}
q = q->next;
}
q = q->next;
}
if (unlikely(fault == afl->crash_mode)) {
@ -595,7 +603,11 @@ u8 save_if_interesting(afl_state_t *afl, void *mem, u32 len, u8 fault) {
}
afl->queue_top->exec_cksum = cksum;
if (cksum)
afl->queue_top->exec_cksum = cksum;
else
afl->queue_top->exec_cksum =
hash64(afl->fsrv.trace_bits, afl->fsrv.map_size, HASH_CONST);
/* Try to calibrate inline; this also calls update_bitmap_score() when
successful. */