netdev - Re: [PATCH v2 net] udpv6: reset daddr and dport in sk if connect() fails

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Date:   Fri, 23 Jun 2017 14:03:43 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     tracywwnj@...il.com
Cc:     netdev@...r.kernel.org, maze@...gle.com, subashab@...eaurora.org,
        weiwan@...gle.com
Subject: Re: [PATCH v2 net] udpv6: reset daddr and dport in sk if connect()
 fails

From: Wei Wang <tracywwnj@...il.com>
Date: Thu, 22 Jun 2017 12:03:41 -0700

> From: Wei Wang <weiwan@...gle.com>
> 
> In __ip6_datagram_connect(), reset sk->sk_v6_daddr and inet->dport if
> error occurs so that udp_v6_early_demux() won't consider this socket
> as a valid candidate for early demux.
> 
> v2: fix compilation error
> 
> Signed-off-by: Wei Wang <weiwan@...gle.com>
> Acked-by: Maciej Żenczykowski <maze@...gle.com>

Please also add a state test against TCP_ESTABLISHED in UDP v6 early
demux to close this race completely.

Thanks.