From: Stefano Garzarella sgarzare@redhat.com
[ Upstream commit 88704454ef8b00ea91537ae0d47d9348077e0e72 ]
virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after probe returns, but virtio-vsock driver uses VQs in the probe function to fill rx and event VQs with new buffers.
Let's fix this, calling virtio_device_ready() before using VQs in the probe function.
Fixes: 0ea9e1d3a9e3 ("VSOCK: Introduce virtio_transport.ko") Signed-off-by: Stefano Garzarella sgarzare@redhat.com Acked-by: Michael S. Tsirkin mst@redhat.com Reviewed-by: Stefan Hajnoczi stefanha@redhat.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/vmw_vsock/virtio_transport.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c index 3954d3be9083..ba1c8cc0c467 100644 --- a/net/vmw_vsock/virtio_transport.c +++ b/net/vmw_vsock/virtio_transport.c @@ -627,6 +627,8 @@ static int virtio_vsock_probe(struct virtio_device *vdev)
vdev->priv = vsock;
+ virtio_device_ready(vdev); + mutex_lock(&vsock->tx_lock); vsock->tx_run = true; mutex_unlock(&vsock->tx_lock);