diff --git a/[refs] b/[refs]
index 42f6de612d5e..753a052d5dd1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9e9e3cbc62da43c66e894d5a61fa08b427e25202
+refs/heads/master: baef99a08a2e23d9386b47e53fa5f0d44fc98f66
diff --git a/trunk/kernel/cgroup.c b/trunk/kernel/cgroup.c
index c29831076e7a..2ae7cb47dbfa 100644
--- a/trunk/kernel/cgroup.c
+++ b/trunk/kernel/cgroup.c
@@ -2434,7 +2434,9 @@ static long cgroup_create(struct cgroup *parent, struct dentry *dentry,
 
  err_remove:
 
+	cgroup_lock_hierarchy(root);
 	list_del(&cgrp->sibling);
+	cgroup_unlock_hierarchy(root);
 	root->number_of_cgroups--;
 
  err_destroy: