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correct map size for small targets

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This commit is contained in:
vanhauser-thc
2021-06-16 15:33:03 +02:00
parent c46f8c1f70
commit 35153e9b49
6 changed files with 17 additions and 22 deletions
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10
src/afl-forkserver.c
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@ -90,6 +90,7 @@ void afl_fsrv_init(afl_forkserver_t *fsrv) {
/* exec related stuff */
fsrv->child_pid = -1;
fsrv->map_size = get_map_size();
fsrv->real_map_size = fsrv->map_size;
fsrv->use_fauxsrv = false;
fsrv->last_run_timed_out = false;
fsrv->debug = false;
@ -110,6 +111,7 @@ void afl_fsrv_init_dup(afl_forkserver_t *fsrv_to, afl_forkserver_t *from) {
fsrv_to->init_tmout = from->init_tmout;
fsrv_to->mem_limit = from->mem_limit;
fsrv_to->map_size = from->map_size;
fsrv_to->real_map_size = from->real_map_size;
fsrv_to->support_shmem_fuzz = from->support_shmem_fuzz;
fsrv_to->out_file = from->out_file;
fsrv_to->dev_urandom_fd = from->dev_urandom_fd;
@ -691,15 +693,15 @@ void afl_fsrv_start(afl_forkserver_t *fsrv, char **argv,
if (!fsrv->map_size) { fsrv->map_size = MAP_SIZE; }
if (unlikely(tmp_map_size % 64)) {
fsrv->real_map_size = tmp_map_size;
if (tmp_map_size % 64) {
// should not happen
WARNF("Target reported non-aligned map size of %u", tmp_map_size);
tmp_map_size = (((tmp_map_size + 63) >> 6) << 6);
}
if (!be_quiet) { ACTF("Target map size: %u", tmp_map_size); }
if (!be_quiet) { ACTF("Target map size: %u", fsrv->real_map_size); }
if (tmp_map_size > fsrv->map_size) {
FATAL(