Oops with "ALSA: jack: implement software jack injection via debugfs"

[Chris Wilson]

Quoting Takashi Iwai (2021-02-02 16:48:35)
> On Tue, 02 Feb 2021 17:30:36 +0100,
> Chris Wilson wrote:
> > 
> > commit 2d670ea2bd53 ("ALSA: jack: implement software jack injection via
> > debugfs") is causing issues for our CI as we see a use-after-free on
> > module unload (on all machines):
> > 
> > https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_9715/fi-skl-6700k2/pstore0-1612277467_Oops_1.txt
> 
> Could you try the patch below?  The unload test was completely
> forgotten.

This took longer than it deserved,
https://patchwork.freedesktop.org/series/86597/

The oops is fixed.

Tested-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris