Jason Wang 124da8f611 tuntap: fix possible deadlock when fail to register netdev
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@gmail.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-08 10:44:27 -05:00
..
2017-12-05 12:51:19 -05:00
2017-11-14 15:46:17 +09:00
2017-11-21 15:57:07 -08:00
2017-11-16 10:49:00 +09:00
2017-12-02 21:31:03 -05:00