netdev - Re: [PATCH net] sctp: listen on the sock only when it's state is listening or closed

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Date:   Thu, 06 Apr 2017 13:56:18 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     lucien.xin@...il.com
Cc:     netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
        marcelo.leitner@...il.com, nhorman@...driver.com,
        andreyknvl@...gle.com
Subject: Re: [PATCH net] sctp: listen on the sock only when it's state is
 listening or closed

From: Xin Long <lucien.xin@...il.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@...gle.com>
> Tested-by: Andrey Konovalov <andreyknvl@...gle.com>
> Signed-off-by: Xin Long <lucien.xin@...il.com>

Applied and queued up for -stable.