linux-kernel - [KVM] 5fc3cfa62b: kernel-selftests.kvm.vmx_pmu_msrs

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Date:   Tue, 17 May 2022 21:16:54 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>, lkp@...ts.01.org,
        lkp@...el.com, xudong.hao@...el.com,
        LKML <linux-kernel@...r.kernel.org>
Subject: [KVM]  5fc3cfa62b: kernel-selftests.kvm.vmx_pmu_msrs_test.fail



Greeting,

FYI, we noticed the following commit (built with gcc-11):

commit: 5fc3cfa62b85fb60d2383229791f755f333963ed ("KVM: x86: Drop guest CPUID check for host initiated writes to MSR_IA32_PERF_CAPABILITIES")
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y

in testcase: kernel-selftests
version: kernel-selftests-x86_64-a6eb654d-1_20220501
with following parameters:

	group: kvm
	ucode: 0xec

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: 4 threads Intel(R) Xeon(R) CPU E3-1225 v5 @ 3.30GHz 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 <oliver.sang@...el.com>



# selftests: kvm: vmx_pmu_msrs_test
# ==== Test Assertion Failure ====
#   x86_64/vmx_pmu_msrs_test.c:117: ret == 0
#   pid=10285 tid=10285 errno=0 - Success
#      1	0x0000000000402643: main at vmx_pmu_msrs_test.c:117
#      2	0x00007f8bb619309a: ?? ??:0
#      3	0x0000000000402759: _start at ??:?
#   Bad PERF_CAPABILITIES didn't fail.
not ok 32 selftests: kvm: vmx_pmu_msrs_test # exit=254



To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        sudo bin/lkp install job.yaml           # job file is attached in this email
        bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
        sudo bin/lkp run generated-yaml-file

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



View attachment "config-5.15.10-00114-g5fc3cfa62b85" of type "text/plain" (163762 bytes)

View attachment "job-script" of type "text/plain" (5965 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (36128 bytes)

View attachment "kernel-selftests" of type "text/plain" (93440 bytes)

View attachment "job.yaml" of type "text/plain" (4944 bytes)

View attachment "reproduce" of type "text/plain" (146 bytes)