linux-kernel - Re: kernel BUG at drivers/scsi/scsi

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Message-ID: <1448033323.4067.24.camel@localhost.localdomain>
Date:	Fri, 20 Nov 2015 10:28:43 -0500
From:	Ewan Milne <emilne@...hat.com>
To:	Hannes Reinecke <hare@...e.de>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Mark Salter <msalter@...hat.com>,
	"James E. J. Bottomley" <JBottomley@...n.com>,
	brking <brking@...ibm.com>, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-block@...r.kernel.org
Subject: Re: kernel BUG at drivers/scsi/scsi_lib.c:1096!

On Fri, 2015-11-20 at 15:55 +0100, Hannes Reinecke wrote:
> Can't we have a joint effort here?
> I've been spending a _LOT_ of time trying to debug things here, but
> none of the ideas I've come up with have been able to fix anything.

Yes.  I'm not the one primarily looking at it, and we don't have a
reproducer in-house.  We just have the one dump right now.

> 
> I'm almost tempted to increase the count from scsi_alloc_sgtable()
> by one and be done with ...
> 

That might not fix it if it is a problem with the merge code, though.


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