Quoting Chris Wilson (2017-10-19 11:53:44)
> _drm_lease_revoke() requires it callers to hold the idr_mutex, but its
> only caller did not. Every device release would then trigger:
>
> WARNING: CPU: 7 PID: 4169 at drivers/gpu/drm/drm_lease.c:313
> _drm_lease_revoke+0x12c/0x140
> Modules linked i
_drm_lease_revoke() requires it callers to hold the idr_mutex, but its
only caller did not. Every device release would then trigger:
WARNING: CPU: 7 PID: 4169 at drivers/gpu/drm/drm_lease.c:313
_drm_lease_revoke+0x12c/0x140
Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_generic i915