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Date:   Fri, 15 Mar 2019 11:26:13 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     yuehaibing@...wei.com
Cc:     joe@...ches.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v2] appletalk: Fix potential NULL pointer dereference
 in unregister_snap_client

From: Yue Haibing <yuehaibing@...wei.com>
Date: Thu, 14 Mar 2019 13:47:59 +0800

> From: YueHaibing <yuehaibing@...wei.com>
> 
> register_snap_client may return NULL, all the callers
> check it, but only print a warning. This will result in
> NULL pointer dereference in unregister_snap_client and other
> places.
> 
> It has always been used like this since v2.6
> 
> Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
> v2: del timer in aarp_proto_init error patch

Applied, thanks for following up.

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