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

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Message-ID: <20180325230700.GA1735@electric-eye.fr.zoreil.com>
Date:   Mon, 26 Mar 2018 01:07:00 +0200
From:   Francois Romieu <romieu@...zoreil.com>
To:     Heiner Kallweit <hkallweit1@...il.com>
Cc:     Realtek linux nic maintainers <nic_swsd@...ltek.com>,
        David Miller <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net] r8169: fix setting driver_data after register_netdev

Heiner Kallweit <hkallweit1@...il.com> :
> 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.

It does not sound convincing.

Please tell which functions are supposed to crash.

Suspend / resume ones ? Anything else ?

-- 
Ueimor