sched, trivial: Initialize root cgroup's sibling list

Even though there are no siblings, the list should be
initialized to not contain bogus values.

Signed-off-by: Glauber Costa <glommer@parallels.com>
Acked-by: Paul Menage <paul@paulmenage.org>
Acked-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1320182360-20043-2-git-send-email-glommer@parallels.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index d9d79a4088c8..0df69866a04e 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -8275,6 +8275,7 @@ void __init sched_init(void)
 #ifdef CONFIG_CGROUP_SCHED
         list_add(&root_task_group.list, &task_groups);
         INIT_LIST_HEAD(&root_task_group.children);
+        INIT_LIST_HEAD(&root_task_group.siblings);
         autogroup_init(&init_task);
 #endif /* CONFIG_CGROUP_SCHED */