netdev - Re: [PATCH net-next] net: mdio_bus: validate "addr" for mdiobus_is_registered

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Date: Tue, 25 Jul 2023 23:23:40 +0200
From: Andrew Lunn <andrew@...n.ch>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Cc: Heiner Kallweit <hkallweit1@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: mdio_bus: validate "addr" for
 mdiobus_is_registered_device()

On Mon, Jul 24, 2023 at 04:57:14PM +0100, Russell King (Oracle) wrote:
> mdiobus_is_registered_device() doesn't checking that "addr" was valid
> before dereferencing bus->mdio_map[]. Extract the code that checks
> this from mdiobus_get_phy(), and use it here as well.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew