From abcf1dceff33f7b8c133de7de863699e436a815e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:29:20 -0500 Subject: [PATCH 130/418] posix-timers: Prevent broadcast signals Posix timers should not send broadcast signals and kernel only signals. Prevent it. Signed-off-by: Thomas Gleixner --- kernel/time/posix-timers.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 708992708332..f5392262fb77 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -434,6 +434,7 @@ static enum hrtimer_restart posix_timer_fn(struct hrtimer *timer) static struct pid *good_sigevent(sigevent_t * event) { struct task_struct *rtn = current->group_leader; + int sig = event->sigev_signo; switch (event->sigev_notify) { case SIGEV_SIGNAL | SIGEV_THREAD_ID: @@ -443,7 +444,8 @@ static struct pid *good_sigevent(sigevent_t * event) /* FALLTHRU */ case SIGEV_SIGNAL: case SIGEV_THREAD: - if (event->sigev_signo <= 0 || event->sigev_signo > SIGRTMAX) + if (sig <= 0 || sig > SIGRTMAX || + sig_kernel_only(sig) || sig_kernel_coredump(sig)) return NULL; /* FALLTHRU */ case SIGEV_NONE: -- 2.17.1