This is a note to let you know that I've just added the patch titled
media: bdisp: Add missing check for create_workqueue
to the 4.19-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:
media-bdisp-add-missing-check-for-create_workqueue.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1c55148fc145e5752e59b5c4d2e369a3ac44c8ef
Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Date: Wed Feb 8 08:14:42 2023 +0100
media: bdisp: Add missing check for create_workqueue
[ Upstream commit 2371adeab717d8fe32144a84f3491a03c5838cfb ]
Add the check for the return value of the create_workqueue
in order to avoid NULL pointer dereference.
Fixes: 28ffeebbb7bd ("[media] bdisp: 2D blitter driver using v4l2 mem2mem framework")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
index 00f6e3f06dac5..7a7271f9d875a 100644
--- a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
+++ b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
@@ -1312,6 +1312,8 @@ static int bdisp_probe(struct platform_device *pdev)
init_waitqueue_head(&bdisp->irq_queue);
INIT_DELAYED_WORK(&bdisp->timeout_work, bdisp_irq_timeout);
bdisp->work_queue = create_workqueue(BDISP_NAME);
+ if (!bdisp->work_queue)
+ return -ENOMEM;
spin_lock_init(&bdisp->slock);
mutex_init(&bdisp->lock);
