From c20b08e3986c2dbfa6df1e880bf4f7159994d199 Mon Sep 17 00:00:00 2001
From: Fabio Checconi <fchecconi@gmail.com>
Date: Mon, 15 Jun 2009 20:56:38 +0200
Subject: [PATCH] sched: Fix rt_rq->pushable_tasks initialization in
 init_rt_rq()

init_rt_rq() initializes only rq->rt.pushable_tasks, and not the
pushable_tasks field of the passed rt_rq.  The plist is not used
uninitialized since the only pushable_tasks plists used are the
ones of root rt_rqs; anyway reinitializing the list on every group
creation corrupts the root plist, losing its previous contents.

Signed-off-by: Fabio Checconi <fabio@gandalf.sssup.it>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090615185638.GK21741@gandalf.sssup.it>
CC: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 kernel/sched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index c4549bd7e174..efecfdad1b5f 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -9093,7 +9093,7 @@ static void init_rt_rq(struct rt_rq *rt_rq, struct rq *rq)
 #ifdef CONFIG_SMP
 	rt_rq->rt_nr_migratory = 0;
 	rt_rq->overloaded = 0;
-	plist_head_init(&rq->rt.pushable_tasks, &rq->lock);
+	plist_head_init(&rt_rq->pushable_tasks, &rq->lock);
 #endif
 
 	rt_rq->rt_time = 0;
-- 
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