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better map variability

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This commit is contained in:
vanhauser-thc
2021-03-17 13:16:02 +01:00
parent adeeed9e43
commit 94312796f9
2 changed files with 7 additions and 4 deletions
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10
src/afl-fuzz.c
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@ -1584,12 +1584,14 @@ int main(int argc, char **argv_orig, char **envp) {
afl->cmplog_fsrv.cmplog_binary = afl->cmplog_binary;
afl->cmplog_fsrv.init_child_func = cmplog_exec_child;
if (map_size <= DEFAULT_SHMEM_SIZE && !afl->non_instrumented_mode &&
!afl->fsrv.qemu_mode && !afl->unicorn_mode) {
if ((map_size <= DEFAULT_SHMEM_SIZE ||
afl->cmplog_fsrv.map_size < map_size) &&
!afl->non_instrumented_mode && !afl->fsrv.qemu_mode &&
!afl->unicorn_mode) {
afl->fsrv.map_size = DEFAULT_SHMEM_SIZE; // dummy temporary value
afl->cmplog_fsrv.map_size = MAX(map_size, (u32)DEFAULT_SHMEM_SIZE);
char vbuf[16];
snprintf(vbuf, sizeof(vbuf), "%u", DEFAULT_SHMEM_SIZE);
snprintf(vbuf, sizeof(vbuf), "%u", afl->cmplog_fsrv.map_size);
setenv("AFL_MAP_SIZE", vbuf, 1);
}