netdev - Re: [PATCH net] net: dsa: sja1105: fix use-after-free after calling of_find_compatible

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Message-ID: <YRwykZONaibo5KKe@lunn.ch>
Date:   Wed, 18 Aug 2021 00:05:05 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Alvin Šipraga <ALSI@...g-olufsen.dk>
Cc:     Vladimir Oltean <vladimir.oltean@....com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Frank Rowand <frowand.list@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH net] net: dsa: sja1105: fix use-after-free after calling
 of_find_compatible_node, or worse

> Do these integrated NXP PHYs use a specific PHY driver, or do they just 
> use the Generic PHY driver? If the former is the case, do you experience 
> that the PHY driver fails to get probed during mdiobus registration if 
> the kernel uses fw_devlink=on?

The Marvell mv88e6xxx driver registers upto two MDIO busses, and the
PHYs on those busses make use of the marvell PHY driver. I've not
tested specifically with fw_devlink=on, but in general, the Marvell
PHY driver does get bound to these devices.

    Andrew