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Re: [regression] stack overflow in xfs_buf_iodone_callbacks

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [regression] stack overflow in xfs_buf_iodone_callbacks
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Thu, 21 Jun 2012 12:34:09 -0400
Cc: xfs@xxxxxxxxxxx
In-reply-to: <20120621091803.GB10673@dastard>
References: <20120621091803.GB10673@dastard>
User-agent: Mutt/1.5.21 (2010-09-15)
On Thu, Jun 21, 2012 at 07:18:03PM +1000, Dave Chinner wrote:
> Folks,
> 
> I just had a stack overflow in the delayed write buffer error
> handling with a shut down filesystem:

I've looked at this a bit more, and it seems the effect really can't
be an XFS shutdown.  We never do the shutdown check inside
xfs_buf_iorequest.  The issue obviously is real, but could it be that
you had an actual persistent I/O error on the underlying device?

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