diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
index 2b899c4ae968ae..4ff238ba12503e 100644
--- a/mm/hugetlb_cgroup.c
+++ b/mm/hugetlb_cgroup.c
@@ -836,6 +836,8 @@ hugetlb_cgroup_cfttypes_init(struct hstate *h, struct cftype *cft,
 			cft->file_offset = MEMFILE_OFFSET0(offset) +
 					   MEMFILE_FIELD_SIZE(offset) * idx;
 		}
+
+		lockdep_register_key(&cft->lockdep_key);
 	}
 }