netdev - Re: [PATCH v2 net] r8169: fix setting driver_data after register

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Message-Id: <20180327.105642.798955649175788501.davem@davemloft.net>
Date:   Tue, 27 Mar 2018 10:56:42 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     hkallweit1@...il.com
Cc:     nic_swsd@...ltek.com, netdev@...r.kernel.org
Subject: Re: [PATCH v2 net] r8169: fix setting driver_data after
 register_netdev

From: Heiner Kallweit <hkallweit1@...il.com>
Date: Mon, 26 Mar 2018 19:19:30 +0200

> pci_set_drvdata() is called only after registering the net_device,
> therefore we could run into a NPE if one of the functions using
> driver_data is called before it's set.
> 
> Fix this by calling pci_set_drvdata() before registering the
> net_device.
> 
> This fix is a candidate for stable. As far as I can see the
> bug has been there in kernel version 3.2 already, therefore
> I can't provide a reference which commit is fixed by it.
> 
> The fix may need small adjustments per kernel version because
> due to other changes the label which is jumped to if
> register_netdev() fails has changed over time.
> 
> Reported-by: David Miller <davem@...emloft.net>
> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
> ---
> v2:
> - rebased based on net instead of net-next

Applied and queued up for -stable, thanks.