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Re: kernel bug in XFS or megaraid driver with heavy I/O lo

To: "Christoph Hellwig" <hch@xxxxxxxxxxxxx>
Subject: Re: kernel bug in XFS or megaraid driver with heavy I/O load
From: jesper@xxxxxxxx
Date: Mon, 17 Oct 2011 14:40:07 +0200 (CEST)
Cc: linux-kernel@xxxxxxxxxxxxxxx, aradford@xxxxxxxxx, xfs@xxxxxxxxxxx
Importance: Normal
In-reply-to: <20111011133448.GA10692@xxxxxxxxxxxxx>
References: <20111011091757.GA32589@xxxxxxxxxxxxxxx> <20111011133448.GA10692@xxxxxxxxxxxxx>
User-agent: SquirrelMail/1.4.15
> On Tue, Oct 11, 2011 at 11:17:57AM +0200, Anders Ossowicki wrote:
>> Pid: 27512, comm: flush-8:32 Tainted: G        W #1 Dell Inc.
>>  PowerEdge R815/04Y8PT
>> RIP: 0010:[<ffffffff810f8d71>]  [<ffffffff810f8d71>]
>> find_get_pages+0x61/0x110
> This is core VM code, and operates purely on on-stack variables except
> for the page cache radix tree nodes / pages.  So this either could be a
> core VM bug that no one has noticed yet, or memory corruption.  Can you
> run memtest86 on the box?

Over the weekend, we have run memtest for 4 hours (50% of the complete
tests according to memtest) and it didnt find anything.

We've also backpatched the raid-driver into 2.6.37 and the problem continued,
so it seems to be related to the driver and/or combinations with hardware.


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