diff options
Diffstat (limited to 'nptl/pthread_create.c')
| -rw-r--r-- | nptl/pthread_create.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c index a559f86cc2..d6ea43a754 100644 --- a/nptl/pthread_create.c +++ b/nptl/pthread_create.c @@ -487,8 +487,16 @@ start_thread (void *arg) /* This prevents sending a signal from this thread to itself during its final stages. This must come after the exit call above - because atexit handlers must not run with signals blocked. */ - __libc_signal_block_all (NULL); + because atexit handlers must not run with signals blocked. + + Do not block SIGSETXID. The setxid handshake below expects the + signal to be delivered. (SIGSETXID cannot run application code, + nor does it use pthread_kill.) Reuse the pd->sigmask space for + computing the signal mask, to save stack space. */ + __sigfillset (&pd->sigmask); + __sigdelset (&pd->sigmask, SIGSETXID); + INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_BLOCK, &pd->sigmask, NULL, + __NSIG_BYTES); /* Tell __pthread_kill_internal that this thread is about to exit. If there is a __pthread_kill_internal in progress, this delays |