Re: [PATCH net-next V2] tuntap: fix possible deadlock when fail to register netdev

[Eric Dumazet]

On Fri, 2017-12-08 at 12:02 +0800, Jason Wang wrote:
> Private destructor could be called when register_netdev() fail with
> rtnl lock held. This will lead deadlock in tun_free_netdev() who
> tries
> to hold rtnl_lock. Fixing this by switching to use spinlock to
> synchronize.
> 
> Fixes: 96f84061620c ("tun: add eBPF based queue selection method")
> Reported-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
> Cc: Eric Dumazet <eric.dumazet@xxxxxxxxx>
> Cc: Willem de Bruijn <willemb@xxxxxxxxxx>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
> ---

Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx>

Thanks.