From 89f64d5e76e9b6b392006d449c41f0b673813fe2 Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Tue, 3 Jan 2006 00:07:28 +0100
Subject: [PATCH] --- yaml --- r: 15379 b: refs/heads/master c:
 8f493d797bc1fe470377adc9d8775845427e240e h: refs/heads/master i:   15377:
 440742f775f155bfd744fa7ee3b20a21020cf4f4   15375:
 289d5210b5ac102c228b0ce7cf42fb35c4b4bba2 v: v3

---
 [refs]               | 2 +-
 trunk/mm/mempolicy.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 91fe932ac92a..607a28304b51 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: abe842eb98c45e2b77c5868ef106616ca828a3e4
+refs/heads/master: 8f493d797bc1fe470377adc9d8775845427e240e
diff --git a/trunk/mm/mempolicy.c b/trunk/mm/mempolicy.c
index bec88c81244e..72f402cc9c9a 100644
--- a/trunk/mm/mempolicy.c
+++ b/trunk/mm/mempolicy.c
@@ -161,6 +161,10 @@ static struct mempolicy *mpol_new(int mode, nodemask_t *nodes)
 	switch (mode) {
 	case MPOL_INTERLEAVE:
 		policy->v.nodes = *nodes;
+		if (nodes_weight(*nodes) == 0) {
+			kmem_cache_free(policy_cache, policy);
+			return ERR_PTR(-EINVAL);
+		}
 		break;
 	case MPOL_PREFERRED:
 		policy->v.preferred_node = first_node(*nodes);