linux-kernel - Re: [BUG] 2.6.23-rc3-mm1 kernel BUG at mm/page

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Message-Id: <20070822135024.dde8ef5a.akpm@linux-foundation.org>
Date:	Wed, 22 Aug 2007 13:50:24 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Christoph Lameter <clameter@....com>,
	Mel Gorman <mel@....ul.ie>, linux-mm@...ck.org
Subject: Re: [BUG] 2.6.23-rc3-mm1 kernel BUG at mm/page_alloc.c:2876!

On Wed, 22 Aug 2007 13:48:00 -0700
Andrew Morton <akpm@...ux-foundation.org> wrote:

> This:
> 
> --- a/mm/page_alloc.c~a
> +++ a/mm/page_alloc.c
> @@ -2814,6 +2814,8 @@ static int __cpuinit process_zones(int c
>  	return 0;
>  bad:
>  	for_each_zone(dzone) {
> +		if (!populated_zone(zone))
> +			continue;		
>  		if (dzone == zone)
>  			break;
>  		kfree(zone_pcp(dzone, cpu));
> _
> 
> might help avoid the crash

err, make that

--- a/mm/page_alloc.c~a
+++ a/mm/page_alloc.c
@@ -2814,6 +2814,8 @@ static int __cpuinit process_zones(int c
 	return 0;
 bad:
 	for_each_zone(dzone) {
+		if (!populated_zone(dzone))
+			continue;
 		if (dzone == zone)
 			break;
 		kfree(zone_pcp(dzone, cpu));
_


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