netdev - Re: [Patch net v2] tipc: fix a null pointer deref on error path

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Date:   Tue, 05 Dec 2017 14:53:38 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     xiyou.wangcong@...il.com
Cc:     netdev@...r.kernel.org, tipc-discussion@...ts.sourceforge.net,
        jon.maloy@...csson.com, ying.xue@...driver.com
Subject: Re: [Patch net v2] tipc: fix a null pointer deref on error path

From: Cong Wang <xiyou.wangcong@...il.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@...glegroups.com>
> Cc: Jon Maloy <jon.maloy@...csson.com>
> Cc: Ying Xue <ying.xue@...driver.com>
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

Applied and queued up for -stable.