linux-kernel - Re: [RFC PATCH v2 net-next 3/8] net: dsa: ocelot: felix: NULL check on variable

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Message-ID: <20210711164717.GE2219684@euler>
Date:   Sun, 11 Jul 2021 09:47:17 -0700
From:   Colin Foster <colin.foster@...advantage.com>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        davem@...emloft.net, kuba@...nel.org, robh+dt@...nel.org,
        claudiu.manoil@....com, alexandre.belloni@...tlin.com,
        UNGLinuxDriver@...rochip.com, linux@...linux.org.uk,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v2 net-next 3/8] net: dsa: ocelot: felix: NULL check
 on variable

On Sat, Jul 10, 2021 at 11:06:28PM +0300, Vladimir Oltean wrote:
> On Sat, Jul 10, 2021 at 12:25:57PM -0700, Colin Foster wrote:
> > Add NULL check before dereferencing array
> > 
> > Signed-off-by: Colin Foster <colin.foster@...advantage.com>
> > ---
> 
> The patch is correct but is insufficiently documented. In particular,
> people might interpret it as a bug fix and backport it to stable
> kernels.

That makes sense. I'll clarify that it is only something that'll affect
future drivers and not a bug fix.