linux-kernel - Re: [cpufreq] d83f959b5e: kmsg.cpufreq:cpufreq_online:Failed_to_initialize_policy_for

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Date:   Tue, 23 Jun 2020 10:25:36 +0100
From:   Quentin Perret <qperret@...gle.com>
To:     kernel test robot <rong.a.chen@...el.com>
Cc:     rjw@...ysocki.net, rafael@...nel.org, viresh.kumar@...aro.org,
        arnd@...db.de, mpe@...erman.id.au, benh@...nel.crashing.org,
        paulus@...ba.org, mingo@...hat.com, peterz@...radead.org,
        juri.lelli@...hat.com, vincent.guittot@...aro.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, kernel-team@...roid.com,
        tkjos@...gle.com, adharmap@...eaurora.org, lkp@...ts.01.org
Subject: Re: [cpufreq] d83f959b5e:
 kmsg.cpufreq:cpufreq_online:Failed_to_initialize_policy_for_cpu:#(-#)

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 <rong.a.chen@...el.com>
> 
> 
> 
> [    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/20200615174141.GA235811@google.com/

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

Thanks,
Quentin