Draft: CVE-2024-38615: cpufreq: exit() callback is optional
requested to merge redhat/red-hat-ci-tools/kernel/bot-branches/centos-stream-9:backport-RHEL-43846-centos-stream-9-main into main
JIRA: https://issues.redhat.com/browse/RHEL-43846
CVE: CVE-2024-38615
cpufreq: exit() callback is optional
The exit() callback is optional and shouldn't be called without checking
a valid pointer first.
Also, we must clear freq_table pointer even if the exit() callback isn't
present.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Fixes: 91a12e91dc39 ("cpufreq: Allow light-weight tear down and bring up of CPUs")
Fixes: f339f3541701 ("cpufreq: Rearrange locking in cpufreq_remove_dev()")
Reported-by: Lizhe <sensor1010@163.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit b8f85833c05730d631576008daaa34096bc7f3ce)Signed-off-by: cki-backport-bot cki-ci-bot+cki-gitlab-backport-bot@redhat.com