On Wed, Jul 16, 2025 at 7:57 PM Zigit Zo <zuozhijie@xxxxxxxxxxxxx> wrote:
>
> The deadlock appears in a stack trace like:
>
> virtnet_probe()
> rtnl_lock()
> virtio_config_changed_work()
> netdev_notify_peers()
> rtnl_lock()
>
> It happens if the VMM sends a VIRTIO_NET_S_ANNOUNCE request while the
> virtio-net driver is still probing.
>
> The config_work in probe() will get scheduled until virtnet_open() enables
> the config change notification via virtio_config_driver_enable().
>
> Fixes: df28de7b0050 ("virtio-net: synchronize operstate with admin state on up/down")
> Signed-off-by: Zigit Zo <zuozhijie@xxxxxxxxxxxxx>
> ---
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Thanks
