diff --git a/[refs] b/[refs]
index 4fa53cdf5f97..251f12621522 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fae9c791703606636c1220e47f6690660042ce7f
+refs/heads/master: b629317e66fb1c6066c550dded45ab85a936163c
diff --git a/trunk/kernel/sched_debug.c b/trunk/kernel/sched_debug.c
index 9b49db144037..19be00ba6123 100644
--- a/trunk/kernel/sched_debug.c
+++ b/trunk/kernel/sched_debug.c
@@ -114,7 +114,9 @@ print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
 	{
 		char path[64];
 
+		rcu_read_lock();
 		cgroup_path(task_group(p)->css.cgroup, path, sizeof(path));
+		rcu_read_unlock();
 		SEQ_printf(m, " %s", path);
 	}
 #endif