linux-kernel - Re: next-20130117 - kernel BUG with aio

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Message-ID: <3423.1360170941@turing-police.cc.vt.edu>
Date:	Wed, 06 Feb 2013 12:15:41 -0500
From:	Valdis.Kletnieks@...edu
To:	Kent Overstreet <koverstreet@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Hillf Danton <dhillf@...il.com>,
	Benjamin LaHaise <bcrl@...ck.org>,
	linux-kernel@...r.kernel.org, linux-aio@...ck.org
Subject: Re: next-20130117 - kernel BUG with aio

On Tue, 05 Feb 2013 09:20:15 -0800, Kent Overstreet said:

> The "smoosh struct kiocb" patch also needs to be dropped. That causes
> aio_rw_vect_retry() to check ki_nbytes/ki_left after they've been
> overwritten by aio_complete(), which causes it to return an error when
> it shouldn't have, which causes aio_run_iocb() to double complete the
> iocb causing put_reqs_available() to be called twice and the count
> screwed up.

Hooray! linux-next-20130206 builds, boots, and VirtualBox 4.2.6 runs
without producing any kernel messages.  Feel free to add the following
as appropriate to this version of the patch series:

Reported-By: Valdis Kletnieks <valdis.kletnieks@...edu>
Tested-By: Valdis Kletnieks <valdis.kletnieks@...edu>


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