From 407af46a967ffd2f208f0a5fb3f1ff954801494a Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Tue, 16 Oct 2007 23:26:57 -0700
Subject: [PATCH] wait_task_zombie: remove unneeded child->signal check

A zombie must have a valid ->signal, we are going to release it and
__exit_signal() starts with BUG_ON(!sig).

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 kernel/exit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/exit.c b/kernel/exit.c
index 8b64c0371ae9..9d6e0897a447 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1201,7 +1201,7 @@ static int wait_task_zombie(struct task_struct *p, int noreap,
 		return 0;
 	}
 
-	if (likely(p->real_parent == p->parent) && likely(p->signal)) {
+	if (likely(p->real_parent == p->parent)) {
 		struct signal_struct *psig;
 		struct signal_struct *sig;
 
-- 
2.20.1