This is a note to let you know that I've just added the patch titled rpmsg: virtio: Fix the unregistration of the device rpmsg_ctrl to the 5.18-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: rpmsg-virtio-fix-the-unregistration-of-the-device-rp.patch and it can be found in the queue-5.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 436028525002a3245669c8a4cebe7bed86677535 Author: Arnaud Pouliquen <arnaud.pouliquen@xxxxxxxxxxx> Date: Tue Apr 26 14:05:36 2022 +0800 rpmsg: virtio: Fix the unregistration of the device rpmsg_ctrl [ Upstream commit df191796985922488e4e6b64f7bd79c3934412f2 ] Unregister the rpmsg_ctrl device instead of just freeing the the virtio_rpmsg_channel structure. This will properly unregister the device and call virtio_rpmsg_release_device() that frees the structure. Fixes: c486682ae1e2 ("rpmsg: virtio: Register the rpmsg_char device") Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxxxxxxx> Reviewed-by: Hangyu Hua <hbh25y@xxxxxxxxx> Link: https://lore.kernel.org/r/20220426060536.15594-4-hbh25y@xxxxxxxxx Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c index 9948a7335b83..905ac7910c98 100644 --- a/drivers/rpmsg/virtio_rpmsg_bus.c +++ b/drivers/rpmsg/virtio_rpmsg_bus.c @@ -862,7 +862,7 @@ static void rpmsg_virtio_del_ctrl_dev(struct rpmsg_device *rpdev_ctrl) { if (!rpdev_ctrl) return; - kfree(to_virtio_rpmsg_channel(rpdev_ctrl)); + device_unregister(&rpdev_ctrl->dev); } static int rpmsg_probe(struct virtio_device *vdev)