Messages in this thread Patch in this message | | | From | Lizhe <> | Subject | [PATCH] cpufreq: Fixed kernel crash caused by cpufreq issues | Date | Thu, 11 Apr 2024 16:18:18 -0700 |
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When the cpufreq_driver does not provide an exit() function. cpufreq offline operations can result in a kernel crash.
Signed-off-by: Lizhe <sensor1010@163.com> --- drivers/cpufreq/cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 04d349372de3..e8660bc7d232 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1739,7 +1739,7 @@ static void cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif) } /* We did light-weight exit earlier, do full tear down now */ - if (cpufreq_driver->offline) + if (cpufreq_driver->offline && cpufreq_driver->exit) cpufreq_driver->exit(policy); up_write(&policy->rwsem); -- 2.25.1
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