diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index e84e801e22cf..5c33ab20cc20 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -1718,7 +1718,8 @@ static int update_parent_effective_cpumask(struct cpuset *cs, int cmd,
 		 */
 		if (is_partition_valid(parent))
 			adding = cpumask_and(tmp->addmask,
-					     xcpus, parent->effective_xcpus);
+					     cs->effective_xcpus,
+					     parent->effective_xcpus);
 		if (old_prs > 0)
 			new_prs = -old_prs;