[PATCH] drm/xe: Fix fault on fd close when wedged

[Lucas De Marchi]

On Wed, Dec 11, 2024 at 07:51:57PM -0800, Matthew Brost wrote:
>On Wed, Dec 11, 2024 at 02:53:32PM -0800, Lucas De Marchi wrote:
>> If device is wedged, the final run ticks update for the client should be
>> skipped as it's already unmapped. Fix this pagefault when forcing a
>
>Where does exec queue get unmapped on wedging a device?

it's the lrc we are trying to read: lrc->bo, with offset == timestamp.

I thought it was part of the the xe_gt_declare_wedged(), but I'm not
following what triggers it - the only thing that should trigger that
would be the xe_lrc_put() and the refcount reaching 0. Something is not
adding up here, I will have to trace the destroy to see what's going on.

Lucas De Marchi