This is a note to let you know that I've just added the patch titled
media: dvbdev: remove double-unlock
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-dvbdev-remove-double-unlock.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 73d2786f288727ae2b8707f91a60e48d2eef811d
Author: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
Date: Thu Mar 28 14:36:14 2019 -0400
media: dvbdev: remove double-unlock
[ Upstream commit 122d0e8dd050cc5dc3fb9e9b5f2dee3c5276ce35 ]
As warned by smatch:
drivers/media/dvb-core/dvbdev.c: drivers/media/dvb-core/dvbdev.c:529 dvb_register_device() error: double unlock 'sem:&minor_rwsem'
Reported-by: Hans Verkuil <hverkuil@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
Stable-dep-of: 8c64f4cdf4e6 ("media: edia: dvbdev: fix a use-after-free")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index b8335ede66264..1f80c4fa31c9b 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -536,7 +536,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
dvb_media_device_free(dvbdev);
kfree(dvbdevfops);
kfree(dvbdev);
- up_write(&minor_rwsem);
mutex_unlock(&dvbdev_register_lock);
return ret;
}
