We applied the patch to many servers.  No problems so far.

The .config is attached.

What's the config option to get that debugging info in the future?

On Mon, 11 Jul 2011, Minchan Kim wrote:

Date: Mon, 11 Jul 2011 08:05:15 +0900
From: Minchan Kim <redacted>
To: Chris Pearson <redacted>
Cc: linux-mm@kvack.org, Andrea Arcangeli <redacted>
Subject: Re: NULL poniter dereference in isolate_lru_pages 2.6.39.1

On Sat, Jul 9, 2011 at 12:39 AM, Chris Pearson
[off-list ref] wrote:

quoted

addr1line says vmscan.c:0

I must have not compiled with some debugging info?

It seems.

1. Could you post your config?
2. Could you apply/test patch I mentioned?

Thanks.

-- 
Kind regards,
Minchan Kim