linux-kernel - [PATCH] hwpoison: fix uninitialized warning

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Message-ID: <Pine.LNX.4.64.0909152206220.28874@sister.anvils>
Date:	Tue, 15 Sep 2009 22:19:07 +0100 (BST)
From:	Hugh Dickins <hugh.dickins@...cali.co.uk>
To:	Andi Kleen <andi@...stfloor.org>
cc:	Wu Fengguang <fengguang.wu@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH] hwpoison: fix uninitialized warning

Fix mmotm build warning, presumably also in linux-next:
mm/memory.c: In function `do_swap_page':
mm/memory.c:2498: warning: `pte' may be used uninitialized in this function

Signed-off-by: Hugh Dickins <hugh.dickins@...cali.co.uk>
---
I've only noticed this warning on one machine, the powerpc: certainly it
needs CONFIG_MIGRATION or CONFIG_MEMORY_FAILURE to see it, but I thought
I had one of those set on other machines - just musing in case it's being
masked elsewhere by some other bug...

 mm/memory.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- mmotm/mm/memory.c	2009-09-14 16:34:37.000000000 +0100
+++ linux/mm/memory.c	2009-09-15 22:00:48.000000000 +0100
@@ -2495,7 +2495,7 @@ static int do_swap_page(struct mm_struct
 		} else if (is_hwpoison_entry(entry)) {
 			ret = VM_FAULT_HWPOISON;
 		} else {
-			print_bad_pte(vma, address, pte, NULL);
+			print_bad_pte(vma, address, orig_pte, NULL);
 			ret = VM_FAULT_OOM;
 		}
 		goto out;
--
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