[PATCH v4 04/14] drm/sched: Cancel and flush all oustatdning jobs before finish.

[Christian König]

This is a bug fix and should probably be pushed separately to drm-misc-next.

Christian.

Am 18.01.21 um 22:01 schrieb Andrey Grodzovsky:
> To avoid any possible use after free.
>
> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
> Reviewed-by: Christian König <christian.koenig at amd.com>
> ---
>   drivers/gpu/drm/scheduler/sched_main.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
> index 997aa15..92637b7 100644
> --- a/drivers/gpu/drm/scheduler/sched_main.c
> +++ b/drivers/gpu/drm/scheduler/sched_main.c
> @@ -899,6 +899,9 @@ void drm_sched_fini(struct drm_gpu_scheduler *sched)
>   	if (sched->thread)
>   		kthread_stop(sched->thread);
>   
> +	/* Confirm no work left behind accessing device structures */
> +	cancel_delayed_work_sync(&sched->work_tdr);
> +
>   	sched->ready = false;
>   }
>   EXPORT_SYMBOL(drm_sched_fini);