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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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2
GNUmakefile
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@ -414,7 +414,7 @@ afl-as: src/afl-as.c include/afl-as.h $(COMM_HDR) | test_x86
@ln -sf afl-as as
src/afl-performance.o : $(COMM_HDR) src/afl-performance.c include/hash.h
$(CC) -Iinclude $(SPECIAL_PERFORMANCE) -O3 -fno-unroll-loops -c src/afl-performance.c -o src/afl-performance.o
$(CC) $(CFLAGS) -Iinclude $(SPECIAL_PERFORMANCE) -O3 -fno-unroll-loops -c src/afl-performance.c -o src/afl-performance.o
src/afl-common.o : $(COMM_HDR) src/afl-common.c include/common.h
$(CC) $(CFLAGS) $(CFLAGS_FLTO) -c src/afl-common.c -o src/afl-common.o

32
src/afl-fuzz-init.c
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@ -1667,21 +1667,21 @@ static void handle_existing_out_dir(afl_state_t *afl) {
if (afl->in_place_resume && rmdir(fn)) {
time_t cur_t = time(0);
struct tm t;
time_t cur_t = time(0);
struct tm t;
localtime_r(&cur_t, &t);
#ifndef SIMPLE_FILES
u8 *nfn = alloc_printf("%s.%04d-%02d-%02d-%02d:%02d:%02d", fn,
t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
t.tm_hour, t.tm_min, t.tm_sec);
u8 *nfn =
alloc_printf("%s.%04d-%02d-%02d-%02d:%02d:%02d", fn, t.tm_year + 1900,
t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
#else
u8 *nfn = alloc_printf("%s_%04d%02d%02d%02d%02d%02d", fn, t.tm_year + 1900,
t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min,
t.tm_sec);
u8 *nfn =
alloc_printf("%s_%04d%02d%02d%02d%02d%02d", fn, t.tm_year + 1900,
t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
#endif /* ^!SIMPLE_FILES */
@ -1699,21 +1699,21 @@ static void handle_existing_out_dir(afl_state_t *afl) {
if (afl->in_place_resume && rmdir(fn)) {
time_t cur_t = time(0);
struct tm t;
time_t cur_t = time(0);
struct tm t;
localtime_r(&cur_t, &t);
#ifndef SIMPLE_FILES
u8 *nfn = alloc_printf("%s.%04d-%02d-%02d-%02d:%02d:%02d", fn,
t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
t.tm_hour, t.tm_min, t.tm_sec);
u8 *nfn =
alloc_printf("%s.%04d-%02d-%02d-%02d:%02d:%02d", fn, t.tm_year + 1900,
t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
#else
u8 *nfn = alloc_printf("%s_%04d%02d%02d%02d%02d%02d", fn, t.tm_year + 1900,
t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min,
t.tm_sec);
u8 *nfn =
alloc_printf("%s_%04d%02d%02d%02d%02d%02d", fn, t.tm_year + 1900,
t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
#endif /* ^!SIMPLE_FILES */

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;
}

3
src/afl-fuzz-redqueen.c
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@ -456,7 +456,8 @@ static u8 cmp_extend_encoding(afl_state_t *afl, struct cmp_header *h,
}
if (/* SHAPE_BYTES(h->shape) >= 1 && */ *status != 1) { /* avoid CodeQL warning on unsigned overflow */
/* avoid CodeQL warning on unsigned overflow */
if (/* SHAPE_BYTES(h->shape) >= 1 && */ *status != 1) {
if (its_len >= 1 && *buf_8 == (u8)pattern && *o_buf_8 == (u8)o_pattern) {

8
src/afl-performance.c
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@ -56,13 +56,13 @@ inline AFL_RAND_RETURN rand_next(afl_state_t *afl) {
// RomuTrio32
inline AFL_RAND_RETURN rand_next(afl_state_t *afl) {
AFL_RAND_RETURN xp = afl->rand_seed[0], yp = afl->rand_seed[1],
zp = afl->rand_seed[2];
AFL_RAND_RETURN xp = (u32)afl->rand_seed[0], yp = (u32)afl->rand_seed[1],
zp = (u32)afl->rand_seed[2];
afl->rand_seed[0] = 3323815723u * zp;
afl->rand_seed[1] = yp - xp;
afl->rand_seed[1] = ROTL(afl->rand_seed[1], 6);
afl->rand_seed[1] = ROTL((u32)afl->rand_seed[1], 6);
afl->rand_seed[2] = zp - yp;
afl->rand_seed[2] = ROTL(afl->rand_seed[2], 22);
afl->rand_seed[2] = ROTL((u32)afl->rand_seed[2], 22);
return xp;
}