2 files changed, 2 insertions, 3 deletions

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 65a807b4f58c..b07be37d2aa3 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -476,7 +476,9 @@ static void print_other_cpu_stall(struct rcu_state *rsp)
 
         printk(KERN_ERR "INFO: RCU detected CPU stalls:");
         rcu_for_each_leaf_node(rsp, rnp) {
+                raw_spin_lock_irqsave(&rnp->lock, flags);
                 rcu_print_task_stall(rnp);
+                raw_spin_unlock_irqrestore(&rnp->lock, flags);
                 if (rnp->qsmask == 0)
                         continue;
                 for (cpu = 0; cpu <= rnp->grphi - rnp->grplo; cpu++)
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index a8b2e834fd3a..aecfe37e0117 100644
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -318,18 +318,15 @@ EXPORT_SYMBOL_GPL(__rcu_read_unlock);
  */
 static void rcu_print_task_stall(struct rcu_node *rnp)
 {
-        unsigned long flags;
         struct list_head *lp;
         int phase;
         struct task_struct *t;
 
         if (rcu_preempted_readers(rnp)) {
-                raw_spin_lock_irqsave(&rnp->lock, flags);
                 phase = rnp->gpnum & 0x1;
                 lp = &rnp->blocked_tasks[phase];
                 list_for_each_entry(t, lp, rcu_node_entry)
                         printk(" P%d", t->pid);
-                raw_spin_unlock_irqrestore(&rnp->lock, flags);
         }
 }