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authorDavid Woodhouse <dwmw2@shinybook.infradead.org>2005-06-02 16:39:11 +0100
committerDavid Woodhouse <dwmw2@shinybook.infradead.org>2005-06-02 16:39:11 +0100
commit1c3f45ab2f7f879ea482501c83899505c31f7539 (patch)
tree672465b3b9b3e2e26a8caf74ed64aa6885c52c13 /kernel/signal.c
parent4bcff1b37e7c3aed914d1ce5b45994adc7dbf455 (diff)
parente0d6d71440a3a35c6fc2dde09f8e8d4d7bd44dda (diff)
Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 293e189d8bc..c89821b69ae 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -523,7 +523,16 @@ static int __dequeue_signal(struct sigpending *pending, sigset_t *mask,
{
int sig = 0;
- sig = next_signal(pending, mask);
+ /* SIGKILL must have priority, otherwise it is quite easy
+ * to create an unkillable process, sending sig < SIGKILL
+ * to self */
+ if (unlikely(sigismember(&pending->signal, SIGKILL))) {
+ if (!sigismember(mask, SIGKILL))
+ sig = SIGKILL;
+ }
+
+ if (likely(!sig))
+ sig = next_signal(pending, mask);
if (sig) {
if (current->notifier) {
if (sigismember(current->notifier_mask, sig)) {