diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 7868fc3c0bc59b3223490114ca8e27f83b4c864c..d9a8be911f5bfe222869b15d5a9bd8a4ffa11344 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -3328,7 +3328,7 @@ bool css_has_online_children(struct cgroup_subsys_state *css)
 
 	rcu_read_lock();
 	css_for_each_child(child, css) {
-		if (css->flags & CSS_ONLINE) {
+		if (child->flags & CSS_ONLINE) {
 			ret = true;
 			break;
 		}