Re: [PATCH] tcp: fix tcp_disconnect() not clear tp->fastopen_rsk sometimes

[David Miller <davem@xxxxxxxxxxxxx>]

From: chunguo feng <chunguo.feng@xxxxxxxxxxx>
Date: Fri, 6 Sep 2019 17:34:29 +0800

> From: fengchunguo <chunguo.feng@xxxxxxxxxxx>
> 
> This patch avoids fastopen_rsk not be cleared every times, then occur 
> the below BUG_ON:
> tcp_v4_destroy_sock
> 	->BUG_ON(tp->fastopen_rsk);
> 
> When playback some videos from netwrok,used tcp_disconnect continually.
 ...
> Signed-off-by: fengchunguo <chunguo.feng@xxxxxxxxxxx>

This still needs review.