diff options
| -rw-r--r-- | instrumentation/afl-compiler-rt.o.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/instrumentation/afl-compiler-rt.o.c b/instrumentation/afl-compiler-rt.o.c index 1b21eea1..c9577a55 100644 --- a/instrumentation/afl-compiler-rt.o.c +++ b/instrumentation/afl-compiler-rt.o.c @@ -242,6 +242,10 @@ static void __afl_map_shm_fuzz() { static void __afl_map_shm(void) { + static u32 __afl_already_initialized_shm = 0; + if (__afl_already_initialized_shm) return; + __afl_already_initialized_shm = 1; + // if we are not running in afl ensure the map exists if (!__afl_area_ptr) { __afl_area_ptr = __afl_area_ptr_dummy; } @@ -742,6 +746,10 @@ static void __afl_start_snapshots(void) { static void __afl_start_forkserver(void) { + static u32 __afl_already_initialized_forkserver = 0; + if (__afl_already_initialized_forkserver) return; + __afl_already_initialized_forkserver = 1; + struct sigaction orig_action; sigaction(SIGTERM, NULL, &orig_action); old_sigterm_handler = orig_action.sa_handler; @@ -1071,6 +1079,10 @@ __attribute__((constructor(CTOR_PRIO))) void __afl_auto_early(void) { __attribute__((constructor(1))) void __afl_auto_second(void) { + static u32 __afl_already_initialized_second = 0; + if (__afl_already_initialized_second) return; + __afl_already_initialized_second = 1; + if (getenv("AFL_DISABLE_LLVM_INSTRUMENTATION")) return; u8 *ptr; @@ -1102,6 +1114,10 @@ __attribute__((constructor(1))) void __afl_auto_second(void) { __attribute__((constructor(0))) void __afl_auto_first(void) { + static u32 __afl_already_initialized_first = 0; + if (__afl_already_initialized_first) return; + __afl_already_initialized_first = 1; + if (getenv("AFL_DISABLE_LLVM_INSTRUMENTATION")) return; u8 *ptr; |