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Message-ID: <20071115135428.GE2489@hacking>
Date: Thu, 15 Nov 2007 21:54:28 +0800
From: WANG Cong <xiyou.wangcong@...il.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Rik van Riel <riel@...hat.com>,
Christoph Lameter <clameter@....com>,
Andrew Morton <akpm@...l.org>, linux-mm@...ck.org
Subject: [Patch] mm/sparse.c: Check the return value of
sparse_index_alloc().
Since sparse_index_alloc() can return NULL on memory allocation failure,
we must deal with the failure condition when calling it.
Signed-off-by: WANG Cong <xiyou.wangcong@...il.com>
Cc: Christoph Lameter <clameter@....com>
Cc: Rik van Riel <riel@...hat.com>
---
diff --git a/Makefile b/Makefile
diff --git a/mm/sparse.c b/mm/sparse.c
index e06f514..d245e59 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -83,6 +83,8 @@ static int __meminit sparse_index_init(unsigned long section_nr, int nid)
return -EEXIST;
section = sparse_index_alloc(nid);
+ if (!section)
+ return -ENOMEM;
/*
* This lock keeps two different sections from
* reallocating for the same index
-
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