diff --git a/[refs] b/[refs]
index ca3c36db405a..1354e03ea77c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ff794dea52eaaa09017efea688a1d7f92ab0818e
+refs/heads/master: cfb5966bef85412dab9c93553db10b3e99ac32e8
diff --git a/trunk/kernel/cpuset.c b/trunk/kernel/cpuset.c
index ace5bfcdcb30..efbfca7a33e4 100644
--- a/trunk/kernel/cpuset.c
+++ b/trunk/kernel/cpuset.c
@@ -2599,6 +2599,7 @@ void cpuset_print_task_mems_allowed(struct task_struct *tsk)
 
 	struct cgroup *cgrp = task_cs(tsk)->css.cgroup;
 
+	rcu_read_lock();
 	spin_lock(&cpuset_buffer_lock);
 
 	nodelist_scnprintf(cpuset_nodelist, CPUSET_NODELIST_LEN,
@@ -2607,6 +2608,7 @@ void cpuset_print_task_mems_allowed(struct task_struct *tsk)
 	       tsk->comm, cgroup_name(cgrp), cpuset_nodelist);
 
 	spin_unlock(&cpuset_buffer_lock);
+	rcu_read_unlock();
 }
 
 /*