From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [RFC] about net: Fix inconsistent teardown and release of
 private netdev state.
Date: Mon, 21 Aug 2017 14:13:15 -0700 (PDT)
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Fri, 18 Aug 2017 20:40:01 -0700

> Let look at tun->pcpu_stats, for example.
> 
> It is allocated at line 1831, before the register_netdevice()
> 
> drivers/net/tun.c does not provide ndo_init()

I see the problem now.

And it's done this way because several steps need to occur, with
various kinds of dependencies, before the register_netdevice() call is
made.

I'll see if I can untangle this somehow.