netdev - Re: [PATCH net] sctp: hold the chunks only after the chunk is enqueued in outq

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Message-Id: <20151206.132550.1712594759452545432.davem@davemloft.net>
Date:	Sun, 06 Dec 2015 13:25:50 -0500 (EST)
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, vyasevic@...hat.com
Subject: Re: [PATCH net] sctp: hold the chunks only after the chunk is
 enqueued in outq

From: Xin Long <lucien.xin@...il.com>
Date: Sat,  5 Dec 2015 15:15:17 +0800

> When a msg is sent, sctp will hold the chunks of this msg and then try
> to enqueue them. But if the chunks are not enqueued in sctp_outq_tail()
> because of the invalid state, sctp_cmd_interpreter() may still return
> success to sctp_sendmsg() after calling sctp_outq_flush(), these chunks
> will become orphans and will leak.
> 
> So we fix them by moving sctp_chunk_hold() to sctp_outq_tail(), where we
> are sure that the chunk is going to get queued.
> 
> Signed-off-by: Xin Long <lucien.xin@...il.com>
> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>

Applied.
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