[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 5ccaac5..b14f895 100644 (file)
--- 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);