diff --git a/mm/shrinker.c b/mm/shrinker.c
index a70aab124a0e..7ec2a9704f6f 100644
--- a/mm/shrinker.c
+++ b/mm/shrinker.c
@@ -227,6 +227,8 @@ static int shrinker_memcg_alloc(struct shrinker *shrinker)
 {
 	int id;
 
+	shrinker->id = -1;
+
 	if (mem_cgroup_disabled())
 		return -ENOSYS;
 	if (mem_cgroup_kmem_disabled() && !(shrinker->flags & SHRINKER_NONSLAB))