diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index e14db9c089b9db31df71296b199f173974b7410e..9edb5c4b79b4f1a88a0487f588c36fc6207f54a9 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1122,8 +1122,8 @@ static void cgroup_kill_sb(struct super_block *sb) {
 
 	mutex_unlock(&cgroup_mutex);
 
-	kfree(root);
 	kill_litter_super(sb);
+	kfree(root);
 }
 
 static struct file_system_type cgroup_fs_type = {