Hold the rtnl lock when calling vxlan_get_rx_port().
Fixes: b7aade15485a ("vxlan: break dependency with netdev drivers") Signed-off-by: Matthew Finlay <matt@mellanox.com> Reported-by: Alexander Duyck <alexander.duyck@gmail.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>