netdev - Re: [PATCH net-next] tipc: fix a potential oops

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Message-Id: <20140829.202259.1402624640108814825.davem@davemloft.net>
Date:	Fri, 29 Aug 2014 20:22:59 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ying.xue@...driver.com
Cc:	jon.maloy@...csson.com, erik.hugne@...csson.com,
	netdev@...r.kernel.org, tipc-discussion@...ts.sourceforge.net
Subject: Re: [PATCH net-next] tipc: fix a potential oops

From: Ying Xue <ying.xue@...driver.com>
Date: Thu, 28 Aug 2014 10:02:41 +0800

> Commit 6c9808ce09f7 ("tipc: remove port_lock") accidentally involves
> a potential bug: when tipc socket instance(tsk) is not got with given
> reference number in tipc_sk_get(), tsk is set to NULL. Subsequently
> we jump to exit label where to decrease socket reference counter
> pointed by tsk pointer in tipc_sk_put(). However, As now tsk is NULL,
> oops may happen because of touching a NULL pointer.
> 
> Signed-off-by: Ying Xue <ying.xue@...driver.com>
> Acked-by: Erik Hugne <erik.hugne@...csson.com>
> Acked-by: Jon Maloy <jon.maloy@...csson.com>

Applied, thanks.
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