linux-kernel - Re: i915_hangcheck_hung problem with 3.8-rc2+ (Linus's latest tree)

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Date:	Wed, 9 Jan 2013 13:42:39 +1000
From:	Dave Airlie <airlied@...il.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	Chris Wilson <chris@...is-wilson.co.uk>, daniel.vetter@...ll.ch,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: i915_hangcheck_hung problem with 3.8-rc2+ (Linus's latest tree)

>> Hi all,
>>
>> I've hit this 3 times today on Linus's latest 3.8-rc2+ tree:
>>
>> [11868.414648] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
>> [11868.414655] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
>> [11870.408342] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
>> [11870.408412] [drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged!
>> [11870.408414] [drm:i915_reset] *ERROR* Failed to reset chip.
>> [11883.083225] gnome-shell[19396]: segfault at 218 ip 00007feef5f32333 sp 00007ffffc1dc930 error 4 in i965_dri.so[7feef5ecb000+d0000]
>
> I just hit this again.  And, as the kernel was asking for it, attached
> is the i915_error_state file, compressed due to the size of it.
>
Welcome to sink hole that is
https://bugs.freedesktop.org/show_bug.cgi?id=55984

3 months and ticking, Intel guys are all running away from it saying
they can't reproduce, everyone else on planet seems to reproduce quite
easily.

Its generally considered a bug in the relocation/shrinker/no idea category,

Assuming you have an Ironlake machine which I'm going to guess you do.

Dave.
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