This is a note to let you know that I've just added the patch titled

virtio: release virtio index when fail to device_register

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: virtio-release-virtio-index-when-fail-to-device_register.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From e60ea67bb60459b95a50a156296041a13e0e380e Mon Sep 17 00:00:00 2001

From: weiping zhang zwp10758@gmail.com Date: Wed, 29 Nov 2017 09:23:01 +0800 Subject: virtio: release virtio index when fail to device_register

From: weiping zhang zwp10758@gmail.com

commit e60ea67bb60459b95a50a156296041a13e0e380e upstream.

index can be reused by other virtio device.

Signed-off-by: weiping zhang zhangweiping@didichuxing.com Reviewed-by: Cornelia Huck cohuck@redhat.com Signed-off-by: Michael S. Tsirkin mst@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/virtio/virtio.c | 2 ++ 1 file changed, 2 insertions(+)

--- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -333,6 +333,8 @@ int register_virtio_device(struct virtio /* device_register() causes the bus infrastructure to look for a * matching driver. */ err = device_register(&dev->dev); + if (err) + ida_simple_remove(&virtio_index_ida, dev->index); out: if (err) virtio_add_status(dev, VIRTIO_CONFIG_S_FAILED);

Patches currently in stable-queue which might be from zwp10758@gmail.com are

queue-4.14/virtio-release-virtio-index-when-fail-to-device_register.patch