Subject: Re: [cpufreq] d83f959b5e: kmsg.cpufreq:cpufreq_online:Failed_to_initialize_policy_for_cpu:#(-#)

From: Quentin Perret <[email-masked]>
Date: Tue, 23 Jun 2020 10:25:36 +0100

Hi,

Thanks for the report.

On Monday 22 Jun 2020 at 08:54:57 (+0800), kernel test robot wrote:
> Greeting,
> 
> FYI, we noticed the following commit (built with gcc-9):
> 
> commit: d83f959b5e7a6378a4afbff23de2a2d064d95749 ("[PATCH 2/2] cpufreq: Specify default governor on command line")
> url: https://github.com/0day-ci/linux/commits/Quentin-Perret/cpufreq-Specify-the-default-governor-on-command-line/20200616-005920
> base: https://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git linux-next
> 
> in testcase: kernel-selftests
> with following parameters:
> 
> 	group: kselftests-x86
> 	ucode: 0xdc
> 
> test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
> test-url: https://www.kernel.org/doc/Documentation/kselftest.txt
> 
> 
> on test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz with 16G memory
> 
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
> 
> 
> 
> 
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <[email-masked]>
> 
> 
> 
> [    8.715369] intel_pstate: Intel P-state driver initializing
> [    8.721146] cpufreq: cpufreq_online: Failed to initialize policy for cpu: 0 (-61)
> [    8.728900] cpufreq: cpufreq_online: Failed to initialize policy for cpu: 1 (-61)
> [    8.736615] cpufreq: cpufreq_online: Failed to initialize policy for cpu: 2 (-61)
> [    8.744400] cpufreq: cpufreq_online: Failed to initialize policy for cpu: 3 (-61)
> [    8.752222] cpufreq: cpufreq_online: Failed to initialize policy for cpu: 4 (-61)
> [    8.760010] cpufreq: cpufreq_online: Failed to initialize policy for cpu: 5 (-61)
> [    8.768077] cpufreq: cpufreq_online: Failed to initialize policy for cpu: 6 (-61)
> [    8.775891] cpufreq: cpufreq_online: Failed to initialize policy for cpu: 7 (-61)

That, I think, is because of the issue I reported here:

    https://lore.kernel.org/lkml/[email-masked]/

The v2 (to be posted shortly) will address this.

Thanks,
Quentin