linux-kernel - Re: [PATCH] cpufreq: apple-soc: Fix possible null-ptr-deref for cpufreq_cpu_get

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Message-ID: <5a984b5c-7994-4671-8397-df7780e40c0c@web.de>
Date: Mon, 30 Dec 2024 08:25:39 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: Charles Han <hanchunchao@...pur.com>, linux-pm@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org,
 Alyssa Rosenzweig <alyssa@...enzweig.io>, Hector Martin <marcan@...can.st>,
 Marc Zyngier <maz@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
 Sven Peter <sven@...npeter.dev>, Viresh Kumar <viresh.kumar@...aro.org>
Cc: LKML <linux-kernel@...r.kernel.org>, asahi@...ts.linux.dev
Subject: Re: [PATCH] cpufreq: apple-soc: Fix possible null-ptr-deref for
 cpufreq_cpu_get_raw()

> cpufreq_cpu_get_raw() may return NULL if the cpu is not in

                                               CPU?

> policy->cpus cpu mask and it will cause null pointer dereference.
…

Would the summary phrase “Prevent null pointer dereference in apple_soc_cpufreq_get_rate()”
be a bit nicer here?

Regards,
Markus