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Date: Thu, 28 Feb 2013 00:25:06 -0500 From: kosaki.motohiro@...il.com To: linux-kernel@...r.kernel.org Cc: linux-mm@...ck.org, Sasha Levin <sasha.levin@...cle.com>, Andrew Morton <akpm@...ux-foundation.org>, Hugh Dickins <hughd@...gle.com>, Mel Gorman <mgorman@...e.de>, Dave Jones <davej@...hat.com>, Hillf Danton <dhillf@...il.com>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> Subject: [PATCH 1/2] mempolicy: fix wrong sp_node insertion From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> From: Hillf Danton <dhillf@...il.com> 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@...il.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> --- mm/mempolicy.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 31d2663..868d08f 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2391,8 +2391,8 @@ static int shared_policy_replace(struct shared_policy *sp, unsigned long start, *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; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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