diff options
| -rw-r--r-- | compiler-rt/lib/tsan/rtl/tsan_interceptors.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc b/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc index d888cdbc51b..1131ddcb27b 100644 --- a/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc +++ b/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc @@ -2191,9 +2191,15 @@ void InitializeInterceptors() { } void internal_start_thread(void(*func)(void *arg), void *arg) { + // Start the thread with signals blocked, otherwise it can steal users + // signals. + __sanitizer_kernel_sigset_t set, old; + internal_sigfillset(&set); + internal_sigprocmask(SIG_SETMASK, &set, &old); void *th; REAL(pthread_create)(&th, 0, (void*(*)(void *arg))func, arg); REAL(pthread_detach)(th); + internal_sigprocmask(SIG_SETMASK, &old, 0); } } // namespace __tsan |
