linux-kernel - Re: [i915] BUG: Bad page state in process Xorg

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Date:	Fri, 22 Nov 2013 18:06:03 +0100
From:	Thomas Hellstrom <thellstrom@...are.com>
To:	Daniel Vetter <daniel@...ll.ch>
CC:	Thomas Meyer <thomas@...3r.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	DRI mailing list <dri-devel@...ts.freedesktop.org>
Subject: Re: [i915] BUG: Bad page state in process Xorg

On 11/22/2013 05:18 PM, Daniel Vetter wrote:
> On Fri, Nov 22, 2013 at 4:54 PM, Thomas Meyer <thomas@...3r.de> wrote:
>>> Am 22.11.2013 um 11:55 schrieb Daniel Vetter <daniel@...ll.ch>:
>>>
>>> On Fri, Nov 22, 2013 at 11:36 AM, Dave Airlie <airlied@...ux.ie> wrote:
>>>>> Hi,
>>>> cc'ing mailing list,
>>>>
>>>> Daniel any ideas?
>>> Nope, not really :( And no ideas how to triage this further - if it
>>> takes 9 days to hit it eventually we'll have a real hard time. Or does
>>> this happen even after just a short X run?
>> Seems to happen every time while stopping the x server. Also after a short run time.
>>
>> The current fedora 3.11 kernel doesn't show this bug. I'm using fedora 19, with a self compiled kernel.
>>
>> I did turn on config-debug-pagealloc but this didn't show any wrongness.
> In that case I think the bisect is the fastest way to insight - atm
> I'm really at loss what could be wrong here.

 From the error messages it looks like whatever's responsible for 
clearing page->mapping doesn't do it for these pages,
(shmem code?).

/Thomas

> -Daniel
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