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-rw-r--r--src/afl-sharedmem.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/afl-sharedmem.c b/src/afl-sharedmem.c
index 09941d61..c1d4ff03 100644
--- a/src/afl-sharedmem.c
+++ b/src/afl-sharedmem.c
@@ -242,11 +242,11 @@ u8 *afl_shm_init(sharedmem_t *shm, size_t map_size,
#else
u8 *shm_str;
- // handle qemu/unicorn compcov map overwrite
- if (map_size == MAP_SIZE) { map_size += 8; }
-
+ // for qemu+unicorn we have to increase by 8 to account for potential
+ // compcov map overwrite
shm->shm_id =
- shmget(IPC_PRIVATE, map_size, IPC_CREAT | IPC_EXCL | DEFAULT_PERMISSION);
+ shmget(IPC_PRIVATE, map_size == MAP_SIZE ? map_size + 8 : map_size,
+ IPC_CREAT | IPC_EXCL | DEFAULT_PERMISSION);
if (shm->shm_id < 0) {
PFATAL("shmget() failed, try running afl-system-config");