From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>

Use the correct groups while initializing sched groups power for
allnodes_domain.  This fixes the crash observed while creating exclusive
cpusets.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Reported-and-tested-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 kernel/sched.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff -puN kernel/sched.c~sched-build_sched_domains-fix kernel/sched.c
--- a/kernel/sched.c~sched-build_sched_domains-fix
+++ a/kernel/sched.c
@@ -6494,7 +6494,12 @@ static int build_sched_domains(const cpu
 	for (i = 0; i < MAX_NUMNODES; i++)
 		init_numa_sched_groups_power(sched_group_nodes[i]);
 
-	init_numa_sched_groups_power(sched_group_allnodes);
+	if (sched_group_allnodes) {
+		int group = cpu_to_allnodes_group(first_cpu(*cpu_map));
+		struct sched_group *sg = &sched_group_allnodes[group];
+
+		init_numa_sched_groups_power(sg);
+	}
 #endif
 
 	/* Attach the domains */
_