netdev - Re: [net-next v1 2/2] tipc: fix a null pointer deref

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Date:   Thu, 21 Mar 2019 09:57:24 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     hoang.h.le@...tech.com.au
Cc:     jon.maloy@...csson.com, maloy@...jonn.com, ying.xue@...driver.com,
        tipc-discussion@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: Re: [net-next v1 2/2] tipc: fix a null pointer deref

From: Hoang Le <hoang.h.le@...tech.com.au>
Date: Thu, 21 Mar 2019 17:25:18 +0700

> In commit c55c8edafa91 ("tipc: smooth change between replicast and
> broadcast") we introduced new method to eliminate the risk of message
> reordering that happen in between different nodes.
> Unfortunately, we forgot checking at receiving side to ignore intra node.
> 
> We fix this by checking and returning if arrived message from intra node.
> 
> syzbot report:
 ...
> Reported-by: syzbot+be4bdf2cc3e85e952c50@...kaller.appspotmail.com
> Fixes: c55c8eda ("tipc: smooth change between replicast and broadcast")
> Acked-by: Jon Maloy <jon.maloy@...csson.com>
> Signed-off-by: Hoang Le <hoang.h.le@...tech.com.au>

Applied.