This is a note to let you know that I've just added the patch titled
media: davinci: vpif_capture: fix potential double free
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-davinci-vpif_capture-fix-potential-double-free.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 b0950ab9659e1e6f3a9191b2bf862e77a657fe93
Author: Evgeny Novikov <novikov@xxxxxxxxx>
Date: Thu Jul 23 19:04:53 2020 +0200
media: davinci: vpif_capture: fix potential double free
[ Upstream commit 602649eadaa0c977e362e641f51ec306bc1d365d ]
In case of errors vpif_probe_complete() releases memory for vpif_obj.sd
and unregisters the V4L2 device. But then this is done again by
vpif_probe() itself. The patch removes the cleaning from
vpif_probe_complete().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Evgeny Novikov <novikov@xxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index a96f53ce80886..cf1d11e6dd8c4 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -1489,8 +1489,6 @@ static int vpif_probe_complete(void)
/* Unregister video device */
video_unregister_device(&ch->video_dev);
}
- kfree(vpif_obj.sd);
- v4l2_device_unregister(&vpif_obj.v4l2_dev);
return err;
}
