netdev - Re: [PATCH net 1/1] tipc: fix bug in multicast/broadcast message reassembly

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Message-Id: <20140708.155542.2880546866748428.davem@davemloft.net>
Date:	Tue, 08 Jul 2014 15:55:42 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jon.maloy@...csson.com
Cc:	netdev@...r.kernel.org, paul.gortmaker@...driver.com,
	erik.hugne@...csson.com, ying.xue@...driver.com, maloy@...jonn.com,
	tipc-discussion@...ts.sourceforge.net
Subject: Re: [PATCH net 1/1] tipc: fix bug in multicast/broadcast message
 reassembly

From: Jon Maloy <jon.maloy@...csson.com>
Date: Sat,  5 Jul 2014 13:44:13 -0400

> Since commit 37e22164a8a3c39bdad45aa463b1e69a1fdf4110 ("tipc: rename and
> move message reassembly function") reassembly of long broadcast messages
> has been broken. This is because we test for a non-NULL return value
> of the *buf parameter as criteria for succesful reassembly. However, this
> parameter is left defined even after reception of the first fragment,
> when reassebly is still incomplete. This leads to a kernel crash as soon
> as a the first fragment of a long broadcast message is received.
> 
> We fix this with this commit, by implementing a stricter behavior of the
> function and its return values.
> 
> This commit should be applied to both net and net-next.
> 
> Signed-off-by: Jon Maloy <jon.maloy@...csson.com>

Applied, thanks.
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