diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index ad28866ed44c6acc0556e74157e83ce6c5fc8b27..83a8fff43d68ebb0e2c7c676d707cfecc6ae24c1 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -3710,7 +3710,7 @@ static void offline_css(struct cgroup_subsys_state *css)
 
 	css->flags &= ~CSS_ONLINE;
 	css->cgroup->nr_css--;
-	RCU_INIT_POINTER(css->cgroup->subsys[ss->id], css);
+	RCU_INIT_POINTER(css->cgroup->subsys[ss->id], NULL);
 }
 
 /**