From: Eric Dumazet
Date: Mon, 14 Oct 2019 06:47:57 -0700
> syzbot found that if __inet_inherit_port() returns an error,
> we call tcp_done() after inet_csk_prepare_forced_close(),
> meaning the socket lock is no longer held.
>
> We might fix this in a different way in net-next, but
> for 5.4 it
syzbot found that if __inet_inherit_port() returns an error,
we call tcp_done() after inet_csk_prepare_forced_close(),
meaning the socket lock is no longer held.
We might fix this in a different way in net-next, but
for 5.4 it seems safer to relax the lockdep check.
Fixes: d983ea6f16b8 ("tcp: add
