virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after probe returns, virtio net violated this rule by using receive VQs within probe.
To fix, call virtio_enable_vqs_early before using VQs. Signed-off-by: Michael S. Tsirkin <m...@redhat.com> --- drivers/net/virtio_net.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index ef04d23..430f3ae 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1792,6 +1792,8 @@ static int virtnet_probe(struct virtio_device *vdev) goto free_vqs; } + virtio_enable_vqs_early(vdev); + /* Last of all, set up some receive buffers. */ for (i = 0; i < vi->curr_queue_pairs; i++) { try_fill_recv(&vi->rq[i], GFP_KERNEL); -- MST _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization