diff --git a/kernel/exit.c b/kernel/exit.c
index 55b4fa6d01ebd983dfc63d10b967810248b4bacc..d607e23fd0c3e650848aeddda555dad8071c999b 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -307,7 +307,7 @@ void rcuwait_wake_up(struct rcuwait *w)
 	 *        MB (A)	      MB (B)
 	 *    [L] cond		  [L] tsk
 	 */
-	smp_rmb(); /* (B) */
+	smp_mb(); /* (B) */
 
 	/*
 	 * Avoid using task_rcu_dereference() magic as long as we are careful,