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mm/mempolicy.c: fix wrong sp_node insertion 

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 <dhillf@gmail.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Dave Jones <davej@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Hillf Danton 2013-03-08 12:43:28 -08:00 committed by Linus Torvalds
parent 88b9e456b1
commit 5ca3957510
1 changed files with 1 additions and 1 deletions
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2
mm/mempolicy.c
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@ -2391,8 +2391,8 @@ 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;