From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Sat, 29 Oct 2005 15:37:40 +0000 (+0400)
Subject: [PATCH] fix ->signal->live leak in copy_process()
X-Git-Tag: v2.6.15-rc1~731^2~14
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8d027de54c77d38eedc9b331c7a2a39807d34691;p=users%2Fwilly%2Fxarray.git

[PATCH] fix ->signal->live leak in copy_process()

exit_signal() (called from copy_process's error path) should decrement
->signal->live, otherwise forking process will miss 'group_dead' in
do_exit().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/signal.c b/kernel/signal.c
index f2b96b08fb44..6904bbbfe116 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -406,6 +406,8 @@ void __exit_signal(struct task_struct *tsk)
 
 void exit_signal(struct task_struct *tsk)
 {
+	atomic_dec(&tsk->signal->live);
+
 	write_lock_irq(&tasklist_lock);
 	__exit_signal(tsk);
 	write_unlock_irq(&tasklist_lock);