From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Tue, 11 Apr 2006 18:18:58 +0000 (+0400)
Subject: [PATCH] __group_complete_signal: remove bogus BUG_ON
X-Git-Tag: v2.6.17-rc2~97
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a145410dccdb44f81d3b56763ef9b6f721f4e47c;p=linux-2.6

[PATCH] __group_complete_signal: remove bogus BUG_ON

Commit e56d090310d7625ecb43a1eeebd479f04affb48b

   [PATCH] RCU signal handling

made this BUG_ON() unsafe. This code runs under ->siglock,
while switch_exec_pids() takes tasklist_lock.

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 5ccaac505e..b14f895027 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -868,7 +868,6 @@ __group_complete_signal(int sig, struct task_struct *p)
 		if (t == NULL)
 			/* restart balancing at this thread */
 			t = p->signal->curr_target = p;
-		BUG_ON(t->tgid != p->tgid);
 
 		while (!wants_signal(sig, t)) {
 			t = next_thread(t);