diff options
| -rw-r--r-- | src/thread/pthread_kill.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/thread/pthread_kill.c b/src/thread/pthread_kill.c index 446254b6..79ddb209 100644 --- a/src/thread/pthread_kill.c +++ b/src/thread/pthread_kill.c @@ -5,7 +5,10 @@ int pthread_kill(pthread_t t, int sig) { int r; sigset_t set; - __block_app_sigs(&set); + /* Block not just app signals, but internal ones too, since + * pthread_kill is used to implement pthread_cancel, which + * must be async-cancel-safe. */ + __block_all_sigs(&set); LOCK(t->killlock); r = t->tid ? -__syscall(SYS_tkill, t->tid, sig) : (sig+0U >= _NSIG ? EINVAL : 0); |