diff --git a/mm/list_lru.c b/mm/list_lru.c
index c669d87001a6..ddb2ee627d32 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -67,6 +67,7 @@ list_lru_from_kmem(struct list_lru *lru, int nid, void *ptr,
 	struct list_lru_node *nlru = &lru->node[nid];
 	struct list_lru_one *l = &nlru->lru;
 	struct mem_cgroup *memcg = NULL;
+	int kmemcg_id;
 
 	if (!list_lru_memcg_aware(lru))
 		goto out;
@@ -75,7 +76,13 @@ list_lru_from_kmem(struct list_lru *lru, int nid, void *ptr,
 	if (!memcg)
 		goto out;
 
-	l = list_lru_from_memcg_idx(lru, nid, memcg_kmem_id(memcg));
+	kmemcg_id = memcg_kmem_id(memcg);
+	l = list_lru_from_memcg_idx(lru, nid, kmemcg_id);
+	if (!l) {
+		pr_info("BUG: the memcg(%px)->objcg(%px), kmemcg_id: %d\n",
+			memcg, memcg->objcg, kmemcg_id);
+		BUG();
+	}
 out:
 	if (memcg_ptr)
 		*memcg_ptr = memcg;