netdev - Re: Regression: qca8k_sw_probe crashes (Was: Re: [net-next PATCH v5 01/14] net: dsa: qca8k: cache match data to speed up access)

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Message-ID: <20220914200857.fgkgflzm3nz5odwj@skbuf>
Date:   Wed, 14 Sep 2022 23:08:57 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Pali Rohár <pali@...nel.org>
Cc:     Christian Marangi <ansuelsmth@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: Regression: qca8k_sw_probe crashes (Was: Re: [net-next PATCH v5
 01/14] net: dsa: qca8k: cache match data to speed up access)

On Wed, Sep 14, 2022 at 10:06:41PM +0200, Pali Rohár wrote:
> Hello! This commit is causing kernel crash on powerpc P2020 based board
> with QCA8337N-AL3C switch.
> So function of_device_get_match_data() takes as its argument NULL
> pointer as 'priv' structure is at this stage zeroed, and which cause
> above kernel crash. priv->dev is filled lines below:

Thanks for the report, it was solved in 'net':
https://patchwork.kernel.org/project/netdevbpf/patch/20220904215319.13070-1-ansuelsmth@gmail.com/