netdev - Re: [PATCH] sctp: fix panic when sending auth chunks

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Date:	Sat, 09 Jul 2016 00:08:54 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	marcelo.leitner@...il.com
Cc:	netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
	nhorman@...driver.com, vyasevich@...il.com
Subject: Re: [PATCH] sctp: fix panic when sending auth chunks

From: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Date: Thu,  7 Jul 2016 09:39:29 -0300

> When we introduced GSO support, if using auth the auth chunk was being
> left queued on the packet even after the final segment was generated.
> Later on sctp_transmit_packet it calls sctp_packet_reset, which zeroed
> the packet len while not accounting for this left-over. This caused more
> space to be used the next packet due to the chunk still being queued,
> but space which wasn't allocated as its size wasn't accounted.
> 
> The fix is to only queue it back when we know that we are going to
> generate another segment.
> 
> Fixes: 90017accff61 ("sctp: Add GSO support")
> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>

Applied to net-next.

Please make the target tree for your patch explicit in future
submissions.

Thanks.