diff mbox series

[v3,06/12] drm/sched: Cancel and flush all oustatdning jobs before finish.

Message ID 1605936082-3099-7-git-send-email-andrey.grodzovsky@amd.com (mailing list archive)
State New, archived
Headers show
Series RFC Support hot device unplug in amdgpu | expand

Commit Message

Andrey Grodzovsky Nov. 21, 2020, 5:21 a.m. UTC 
To avoid any possible use after free.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
---
 drivers/gpu/drm/scheduler/sched_main.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Christian König Nov. 22, 2020, 11:56 a.m. UTC | #1 
Am 21.11.20 um 06:21 schrieb Andrey Grodzovsky:
> To avoid any possible use after free.
>
> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>

Reviewed-by: Christian König <christian.koenig@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 da24c4e..c3f0bd0 100644
> --- a/drivers/gpu/drm/scheduler/sched_main.c
> +++ b/drivers/gpu/drm/scheduler/sched_main.c
> @@ -891,6 +891,9 @@ 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);
diff mbox series

Patch

diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index da24c4e..c3f0bd0 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -891,6 +891,9 @@  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);