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Re: linux-2.6.34 xfs crash: xfs_inode_ag_iterator+0x6c - NULL pointer de

To: Peter Niemayer <niemayer@xxxxxx>
Subject: Re: linux-2.6.34 xfs crash: xfs_inode_ag_iterator+0x6c - NULL pointer dereference
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Fri, 11 Jun 2010 12:19:22 -0400
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <hur8at$jua$1@xxxxxxxxxxxxxxx>
References: <hur8at$jua$1@xxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-08-17)
On Thu, Jun 10, 2010 at 07:45:01PM +0200, Peter Niemayer wrote:
> Hi,
> 
> FYI: attached screen-shot is from a server that crashed today when
> doing an "umount" of a no longer needed XFS partition on a SSD
> (mount options: rw,noatime,nodiratime,nobarrier)
> 
> (The operations on that filesystem ended > 1 day before the umount,
>  and did not show any problem)
> 
> Kernel was plain vanilla 2.6.34.

Unfortunately the backtrace doesn't really tell what has happened as
the origin of the backtrace scrolled away.

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