From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net] sctp: listen on the sock only when it's state is
 listening or closed
Date: Thu, 06 Apr 2017 13:56:18 -0700 (PDT)
Message-ID: <20170406.135618.1664330530425584626.davem@davemloft.net>
References: <19f73778f8e27b05ee9aa25ece57db6b0e73d197.1491455452.git.lucien.xin@gmail.com>
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Cc: netdev@vger.kernel.org, linux-sctp@vger.kernel.org,
        marcelo.leitner@gmail.com, nhorman@tuxdriver.com,
        andreyknvl@google.com
To: lucien.xin@gmail.com
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From: Xin Long <lucien.xin@gmail.com>
Date: Thu,  6 Apr 2017 13:10:52 +0800

> Now sctp doesn't check sock's state before listening on it. It could
> even cause changing a sock with any state to become a listening sock
> when doing sctp_listen.
> 
> This patch is to fix it by checking sock's state in sctp_listen, so
> that it will listen on the sock with right state.
> 
> Reported-by: Andrey Konovalov <andreyknvl@google.com>
> Tested-by: Andrey Konovalov <andreyknvl@google.com>
> Signed-off-by: Xin Long <lucien.xin@gmail.com>

Applied and queued up for -stable.