diff options
Diffstat (limited to 'sysdeps/nptl/_Fork.c')
| -rw-r--r-- | sysdeps/nptl/_Fork.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sysdeps/nptl/_Fork.c b/sysdeps/nptl/_Fork.c index ef199ddbc3..fd2cfc7840 100644 --- a/sysdeps/nptl/_Fork.c +++ b/sysdeps/nptl/_Fork.c @@ -22,6 +22,11 @@ pid_t _Fork (void) { + /* Block all signals to avoid revealing the inconsistent TCB state + to a signal handler after fork. */ + internal_sigset_t original_sigmask; + internal_signal_block_all (&original_sigmask); + pid_t pid = arch_fork (&THREAD_SELF->tid); if (pid == 0) { @@ -44,6 +49,8 @@ _Fork (void) INTERNAL_SYSCALL_CALL (set_robust_list, &self->robust_head, sizeof (struct robust_list_head)); } + + internal_signal_restore_set (&original_sigmask); return pid; } libc_hidden_def (_Fork) |