linux-kernel - Re: [PATCH v2 net] net: lan966x: fix kernel oops on ioctl when I/F is down

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Message-ID: <YkJavKgcDJUh1pLu@lunn.ch>
Date:   Tue, 29 Mar 2022 03:02:52 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Michael Walle <michael@...le.cc>
Cc:     Horatiu Vultur <horatiu.vultur@...rochip.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, UNGLinuxDriver@...rochip.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 net] net: lan966x: fix kernel oops on ioctl when I/F
 is down

On Tue, Mar 29, 2022 at 12:03:50AM +0200, Michael Walle wrote:
> ioctls handled by phy_mii_ioctl() will cause a kernel oops when the
> interface is down. Fix it by making sure there is a PHY attached.
> 
> Fixes: 735fec995b21 ("net: lan966x: Implement SIOCSHWTSTAMP and SIOCGHWTSTAMP")
> Signed-off-by: Michael Walle <michael@...le.cc>

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

    Andrew