cpufreq: scmi: Fix null-ptr-deref in scmi_cpufreq_get_rate()

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[ Upstream commit 484d3f15cc ]

cpufreq_cpu_get_raw() can return NULL when the target CPU is not present
in the policy->cpus mask. scmi_cpufreq_get_rate() does not check for
this case, which results in a NULL pointer dereference.

Add NULL check after cpufreq_cpu_get_raw() to prevent this issue.

Fixes: 99d6bdf338 ("cpufreq: add support for CPU DVFS based on SCMI message protocol")
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Henry Martin 2025-04-08 23:03:53 +08:00 • committed by Greg Kroah-Hartman

parent ad03f3f852

commit 4e3d1c1925

1 changed files with 8 additions and 2 deletions

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drivers/cpufreq/scmi-cpufreq.c

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