diff -upN reference/kernel/sched.c current/kernel/sched.c
--- reference/kernel/sched.c	2004-05-02 08:41:28.000000000 -0700
+++ current/kernel/sched.c	2004-05-02 08:41:29.000000000 -0700
@@ -1742,7 +1742,6 @@ find_busiest_group(struct sched_domain *
 
 		/* Tally up the load of all CPUs in the group */
 		cpus_and(tmp, group->cpumask, cpu_online_map);
-		WARN_ON(cpus_empty(tmp));
 
 		avg_load = 0;
 		for_each_cpu_mask(i, tmp)