3.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hillf Danton <dhi...@gmail.com>
commit 5ca3957510b9fc2a14d3647db518014842f9a2b4 upstream.
n->end is accessed in sp_insert(). Thus it should be update
before calling sp_insert(). This mistake may make kernel panic.
Signed-off-by: Hillf Danton <dhi...@gmail.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motoh...@jp.fujitsu.com>
Cc: Sasha Levin <sasha.le...@oracle.com>
Cc: Hugh Dickins <hu...@google.com>
Cc: Mel Gorman <mgor...@suse.de>
Cc: Dave Jones <da...@redhat.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
mm/mempolicy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2386,8 +2386,8 @@ restart:
*mpol_new = *n->policy;
atomic_set(&mpol_new->refcnt, 1);
sp_node_init(n_new, n->end, end, mpol_new);
- sp_insert(sp, n_new);
n->end = start;
+ sp_insert(sp, n_new);
n_new = NULL;
mpol_new = NULL;
break;
--
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