linux-kernel - Re: [linus:master] [perf/x86/intel] 25dfc9e357: kvm-unit-tests-qemu.pmu.fail

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Message-ID: <f272389f-8565-4bdc-8727-8b37eaa82821@linux.intel.com>
Date: Fri, 20 Sep 2024 09:27:06 -0400
From: "Liang, Kan" <kan.liang@...ux.intel.com>
To: kernel test robot <oliver.sang@...el.com>
Cc: oe-lkp@...ts.linux.dev, lkp@...el.com, linux-kernel@...r.kernel.org,
 Thomas Gleixner <tglx@...utronix.de>, Li Huafei <lihuafei1@...wei.com>,
 linux-perf-users@...r.kernel.org, Dapeng Mi <dapeng1.mi@...ux.intel.com>
Subject: Re: [linus:master] [perf/x86/intel] 25dfc9e357:
 kvm-unit-tests-qemu.pmu.fail



On 2024-09-20 3:50 a.m., kernel test robot wrote:
> 
> 
> Hello,
> 
> kernel test robot noticed "kvm-unit-tests-qemu.pmu.fail" on:
> 
> commit: 25dfc9e357af8aed1ca79b318a73f2c59c1f0b2b ("perf/x86/intel: Limit the period on Haswell")

This should only impact the period wrote to a counter.
There is no functional change.

As far as I know, the kvm-unit-tests-qemu.pmu directly manipulates the
counters. It should not be impacted by the perf changes. That's weird.

> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> 
> [test failed on linus/master      3352633ce6b221d64bf40644d412d9670e7d56e3]
> [test failed on linux-next/master 5acd9952f95fb4b7da6d09a3be39195a80845eb6]
> 
> in testcase: kvm-unit-tests-qemu
> version: 
> with following parameters:
> 
> 
> 
> 
> compiler: gcc-12
> test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz (Haswell) with 16G memory
> 
> (please refer to attached dmesg/kmsg for entire log/backtrace)
> 
> 
> 
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <oliver.sang@...el.com>
> | Closes: https://lore.kernel.org/oe-lkp/202409201525.4877023e-oliver.sang@intel.com
> 
> 
> ...
> .[32mPASS.[0m msr (1836 tests)
> .[31mFAIL.[0m pmu (143 tests, 24 unexpected failures, 14 skipped)  <---

Is there a list to show which checks are failed?

Thanks,
Kan

> .[32mPASS.[0m pmu_lbr (3 tests)
> .[33mSKIP.[0m pmu_pebs (1 tests, 1 skipped)
> ...
> 
> 
> 
> The kernel config and materials to reproduce are available at:
> https://download.01.org/0day-ci/archive/20240920/202409201525.4877023e-oliver.sang@intel.com
> 
> 
>