From: Kirill Tkhai
Date: Fri, 30 Mar 2018 19:38:16 +0300
> there is wext_netdev_notifier_call()->wireless_nlevent_flush()
> netdevice notifier, which takes net_rwsem, so we can't take
> net_rwsem in {,un}register_netdevice_notifier().
>
> Since {,un}register_netdevice_notifier() is executed unde
(Forgot to CC netdev@ :)
Hi,
there is wext_netdev_notifier_call()->wireless_nlevent_flush()
netdevice notifier, which takes net_rwsem, so we can't take
net_rwsem in {,un}register_netdevice_notifier().
Since {,un}register_netdevice_notifier() is executed under
pernet_ops_rwsem, net_namespace_list
