This is a note to let you know that I've just added the patch titled
drm/sched: Cancel and flush all outstanding jobs before finish.
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-sched-cancel-and-flush-all-outstanding-jobs-before-finish.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e582951baabba3e278c97169d0acc1e09b24a72e Mon Sep 17 00:00:00 2001
From: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
Date: Mon, 18 Jan 2021 16:01:13 -0500
Subject: drm/sched: Cancel and flush all outstanding jobs before finish.
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From: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
commit e582951baabba3e278c97169d0acc1e09b24a72e upstream.
To avoid any possible use after free.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Link: https://patchwork.freedesktop.org/patch/414814/
CC: stable@xxxxxxxxxxxxxxx
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/scheduler/sched_main.c | 3 +++
1 file changed, 3 insertions(+)
--- 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_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);
Patches currently in stable-queue which might be from andrey.grodzovsky@xxxxxxx are
queue-5.11/drm-sched-cancel-and-flush-all-outstanding-jobs-before-finish.patch
