diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index 05d178008cbc..07372f60bee3 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -638,8 +638,9 @@ static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle,
 				break;
 
 		n->next = *ins;
-		wmb();
+		tcf_tree_lock(tp);
 		*ins = n;
+		tcf_tree_unlock(tp);
 
 		*arg = (unsigned long)n;
 		return 0;