linux-kernel - Re: [PATCH net] r8152: fix the list rx_done may be used without initialization

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Message-Id: <20170321.143729.15606239118290633.davem@davemloft.net>
Date:   Tue, 21 Mar 2017 14:37:29 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     hayeswang@...ltek.com
Cc:     netdev@...r.kernel.org, petr.vorel@...il.com, nic_swsd@...ltek.com,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH net] r8152: fix the list rx_done may be used without
 initialization

From: Hayes Wang <hayeswang@...ltek.com>
Date: Tue, 14 Mar 2017 14:15:20 +0800

> The list rx_done would be initialized when the linking on occurs.
> Therefore, if a napi is scheduled without any linking on before,
> the following kernel panic would happen.
> 
> 	BUG: unable to handle kernel NULL pointer dereference at 000000000000008
> 	IP: [<ffffffffc085efde>] r8152_poll+0xe1e/0x1210 [r8152]
> 	PGD 0
> 	Oops: 0002 [#1] SMP
> 
> Signed-off-by: Hayes Wang <hayeswang@...ltek.com>

Applied.