[Bug 107715] [CI][BAT] igt at gem_sync@basic-many-each - fail - Failed assertion: !"GPU hung"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107715

Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|FIXED                       |---
             Status|RESOLVED                    |REOPENED

--- Comment #5 from Martin Peres <martin.peres at free.fr> ---
(In reply to Chris Wilson from comment #4)
> Fingers crossed:
> 
> commit 70b73f9ac113983f9c7db9887447f1344ac5b69b (HEAD ->
> drm-intel-next-queued, drm-intel/drm-intel-next-queued)
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Thu Aug 30 17:10:42 2018 +0100
> 
>     drm/i915/ringbuffer: Delay after invalidating gen6+ xcs
>     
>     During stress testing of full-ppgtt (on Baytrail at least), we found
>     that the invalidation around a context/mm switch was insufficient (writes
>     would go astray). Adding a second MI_FLUSH_DW barrier prevents this, but
>     it is unclear as to whether this is merely a delaying tactic or if it is
>     truly serialising with the TLB invalidation. Either way, it is
>     empirically required.
>     
>     v2: Avoid the loop for readability;
>     
>     Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107715
>     References: https://bugs.freedesktop.org/show_bug.cgi?id=107759
>     Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
>     Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
>     Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
>     Cc: Matthew Auld <matthew.william.auld at gmail.com>
>     Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
>     Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
>     Link:
> https://patchwork.freedesktop.org/patch/msgid/20180830161042.29193-1-
> chris at chris-wilson.co.uk

Still happening:

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_100/fi-byt-j1900/igt@gem_sync@basic-many-each.html

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4744/fi-byt-squawks/igt@gem_sync@basic-many-each.html

(gem_sync:2671) igt_aux-CRITICAL: Test assertion failure function sig_abort,
file ../lib/igt_aux.c:500:
(gem_sync:2671) igt_aux-CRITICAL: Failed assertion: !"GPU hung"
Subtest basic-many-each failed.

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