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

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Date:	Thu, 24 Jan 2013 12:22:21 -0500
From:	Valdis.Kletnieks@...edu
To:	Hillf Danton <dhillf@...il.com>
Cc:	Benjamin LaHaise <bcrl@...ck.org>,
	Kent Overstreet <koverstreet@...gle.com>,
	linux-kernel@...r.kernel.org, linux-aio@...ck.org
Subject: Re: next-20130117 - kernel BUG with aio

On Wed, 23 Jan 2013 20:10:03 +0800, Hillf Danton said:

> Try again?
> ---
>
> --- a/fs/aio.c	Tue Jan 22 21:37:54 2013
> +++ b/fs/aio.c	Wed Jan 23 20:06:14 2013

Now seeing this:

[ 2941.495370] ------------[ cut here ]------------
[ 2941.495379] WARNING: at fs/aio.c:336 put_ioctx+0x1cb/0x252()

Same warn location, but different traceback?

[ 2941.495407] Call Trace:
[ 2941.495415]  [<ffffffff8102f5ad>] warn_slowpath_common+0x7e/0x97
[ 2941.495419]  [<ffffffff8102f5db>] warn_slowpath_null+0x15/0x17
[ 2941.495423]  [<ffffffff8115247b>] put_ioctx+0x1cb/0x252
[ 2941.495428]  [<ffffffff81617fc3>] ? sub_preempt_count+0x33/0x46
[ 2941.495433]  [<ffffffff81050448>] ? abort_exclusive_wait+0x89/0x89
[ 2941.495438]  [<ffffffff81152529>] kill_ioctx_work+0x27/0x2b
[ 2941.495443]  [<ffffffff81603ded>] process_one_work+0x26f/0x4be
[ 2941.495447]  [<ffffffff81603d27>] ? process_one_work+0x1a9/0x4be
[ 2941.495453]  [<ffffffff810483c5>] ? spin_lock_irq+0x9/0xb
[ 2941.495457]  [<ffffffff8104b0f9>] worker_thread+0x1b6/0x28e
[ 2941.495461]  [<ffffffff8104af43>] ? rescuer_thread+0x1a5/0x1a5
[ 2941.495466]  [<ffffffff8104f7cc>] kthread+0x9d/0xa5
[ 2941.495471]  [<ffffffff8104f72f>] ? __kthread_parkme+0x60/0x60
[ 2941.495475]  [<ffffffff8161b06c>] ret_from_fork+0x7c/0xb0
[ 2941.495479]  [<ffffffff8104f72f>] ? __kthread_parkme+0x60/0x60
[ 2941.495483] ---[ end trace 8e545cd216c853ec ]---

Obviously VirtualBox 4.2.6 on my laptop is going out of its way to
get indigestion at this patch series. :)


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