Greeting, FYI, we noticed the following commit (built with gcc-9): commit: 29bdfb8b85a85f36e3fca739146845d7050a372d ("[PATCH 09/11] KVM: x86/pmu: Replace pmc_perf_hw_id() with perf_get_hw_event_config()") url: https://github.com/0day-ci/linux/commits/Like-Xu/KVM-x86-pmu-Get-rid-of-P... base: https://git.kernel.org/cgit/virt/kvm/kvm.git master patch link: https://lore.kernel.org/kvm/20220221115201.22208-10-likexu@tencent.com in testcase: kvm-unit-tests version: kvm-unit-tests-x86_64-882825e-1_20220215 with following parameters: ucode: 0x28 on test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-4790 v3 @ 3.60GHz with 6G 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(a)intel.com&gt; PASS pmu (142 tests) <--- we noticed there are failures on parent commit PASS pmu_lbr (3 tests) FAIL pmu_emulation (4 tests, 2 unexpected failures) <--- paerent can pass 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. --- 0DAY/LKP+ Test Infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation Thanks, Oliver Sang