linux-kernel - Re: 2.6.21-rc3-mm2 (oops in move

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Message-Id: <200703140911.16537.bjorn.helgaas@hp.com>
Date:	Wed, 14 Mar 2007 09:11:16 -0600
From:	Bjorn Helgaas <bjorn.helgaas@...com>
To:	Mel Gorman <mel@...net.ie>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.21-rc3-mm2 (oops in move_freepages)

On Wednesday 14 March 2007 03:44, Mel Gorman wrote:
> Please try the following patch from Yasunori Goto.
> ...
> --- current_test.orig/mm/page_alloc.c	2007-03-08 15:44:10.000000000 +0900
> +++ current_test/mm/page_alloc.c	2007-03-08 16:17:29.000000000 +0900
> @@ -707,7 +707,7 @@ int move_freepages(struct zone *zone,
>  	unsigned long order;
>  	int blocks_moved = 0;
>  
> -	BUG_ON(page_zone(start_page) != page_zone(end_page));
> +	BUG_ON(page_zone(start_page) != page_zone(end_page - 1));
>  

I should have mentioned that I already tried this patch.  The
oops still occurs, although now it's when loading the value
pointed to by "end_page - 1" instead of "end_page".
-
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