From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [Patch net v2] tipc: fix a null pointer deref on error path
Date: Tue, 05 Dec 2017 14:53:38 -0500 (EST)
Message-ID: <20171205.145338.205160935964030137.davem@davemloft.net>
References: <20171204183143.7395-1-xiyou.wangcong@gmail.com>
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net,
        jon.maloy@ericsson.com, ying.xue@windriver.com
To: xiyou.wangcong@gmail.com
Return-path: <netdev-owner@vger.kernel.org>
Received: from shards.monkeyblade.net ([184.105.139.130]:39518 "EHLO
        shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1752312AbdLETxl (ORCPT
        <rfc822;netdev@vger.kernel.org>); Tue, 5 Dec 2017 14:53:41 -0500
In-Reply-To: <20171204183143.7395-1-xiyou.wangcong@gmail.com>
Sender: netdev-owner@vger.kernel.org
List-ID: <netdev.vger.kernel.org>

From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Mon,  4 Dec 2017 10:31:43 -0800

> In tipc_topsrv_kern_subscr() when s->tipc_conn_new() fails
> we call tipc_close_conn() to clean up, but in this case
> calling conn_put() is just enough.
> 
> This fixes the folllowing crash:
 ...
> Fixes: 14c04493cb77 ("tipc: add ability to order and receive topology events in driver")
> Reported-by: syzbot <syzkaller@googlegroups.com>
> Cc: Jon Maloy <jon.maloy@ericsson.com>
> Cc: Ying Xue <ying.xue@windriver.com>
> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>

Applied and queued up for -stable.