diff options
| author | Markos Chandras <markos.chandras@imgtec.com> | 2011-11-23 13:45:47 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2012-01-14 19:36:07 -0500 |
| commit | 2b30ab7137da331d8ead24d244b8feb3e1028152 (patch) | |
| tree | fbea08412b940c8368ee0f3289e838006df3732e /libpthread | |
| parent | a899b909abe14e8e35a81997c828201d1beaff78 (diff) | |
linuxthreads/signals: do not restore handler for invalid signal
Invalid signals have no handlers so when trying to restore the old
handler to a bad signal a SIGSEGV occurs. This is because the library
tries to store the old handler to an invalid memory area where it things
the bad signal lives.
URL: https://bugs.busybox.net/show_bug.cgi?id=4640
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'libpthread')
| -rw-r--r-- | libpthread/linuxthreads/signals.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libpthread/linuxthreads/signals.c b/libpthread/linuxthreads/signals.c index c08125579..61b411aba 100644 --- a/libpthread/linuxthreads/signals.c +++ b/libpthread/linuxthreads/signals.c @@ -113,7 +113,7 @@ int __pthread_sigaction(int sig, const struct sigaction * act, newactp = NULL; if (__libc_sigaction(sig, newactp, oact) == -1) { - if (act) + if (act && (sig > 0 && sig < NSIG)) __sighandler[sig].old = (arch_sighandler_t) old; return -1; } |