linux-kernel - Re: XFS kernel BUG at fs/buffer.c:470! with 2.6.28.4

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Date:	Fri, 27 Feb 2009 10:22:27 +0100
From:	Alessandro Bono <alessandro.bono@...il.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Dave Chinner <david@...morbit.com>,
	Christoph Hellwig <hch@...radead.org>,
	linux-xfs <linux-xfs@....sgi.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: XFS kernel BUG at fs/buffer.c:470! with 2.6.28.4

On Thu, 2009-02-26 at 17:58 +0100, Jan Kara wrote:
.....

>   Hmm, are you still able to reproduce the problem? As I'm looking into
> registers in your dump, no register really seems to contain sensible page
> flags so it could be some corruption of page pointer. If you are still
> able to reproduce, could you please do so with the attached patch
> applied? It will dump us much more information... Thanks.
> 
> 								Honza
> 

Hi

I tried your patch with a 2.6.28.7 and I can recreate bug (ooops
attached). I reformatted my notebook and I used ext3 without lvm or
dm_crypt as root fs
As target disk I used a usb hd, with plain xfs or xfs over dm_crypt with
a quick test (50G of data) I can't hit bug, but with xfs over lvm over
dm_crypt (the condition of my root fs before reformatting) I have hit
bug after ~80G  of data

some other information attached
if you need I can do a full test with plain xfs or xfs over dm_crypt
(this we maybe I have enough time)

thanks 



-- 
---
Cordiali Saluti
Alessandro Bono

View attachment "bug-xfs-2.6.28.7+debuginfo" of type "text/plain" (4385 bytes)

View attachment "config-2.6.28.7" of type "text/plain" (72602 bytes)

View attachment "dmesg-2.6.28.7" of type "text/plain" (51803 bytes)