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 [ 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) [ 8.783861] hid: raw HID events driver (C) Jiri Kosina [ 8.789211] usbcore: registered new interface driver usbhid [ 8.794908] usbhid: USB HID core driver [ 8.798902] drop_monitor: Initializing network drop monitor service [ 8.805365] Initializing XFRM netlink socket [ 8.809817] NET: Registered protocol family 10 [ 8.814586] Segment Routing with IPv6 [ 8.818389] NET: Registered protocol family 17 [ 8.822969] 9pnet: Installing 9P2000 support [ 8.827367] mpls_gso: MPLS GSO support [ 8.832204] microcode: sig=0x506e3, pf=0x2, revision=0xdc [ 8.837953] microcode: Microcode Update Driver: v2.2. [ 8.837955] IPI shorthand broadcast: enabled [ 8.847612] ... APIC ID: 00000000 (0) [ 8.848610] ... APIC VERSION: 01060015 [ 8.848610] 0000000000000000000000000000000000000000000000000000000000000000 [ 8.862620] 0000000000000000000000000000000000000000000000000000000000000000 [ 8.865617] usb 1-4: new low-speed USB device number 2 using xhci_hcd [ 8.862620] 0000000000000000000000000000000000000000000000000000000000000000 [ 8.870017] number of MP IRQ sources: 15. [ 8.870017] number of IO-APIC #2 registers: 120. [ 8.870018] testing the IO APIC....................... [ 8.897877] IO APIC #2...... [ 8.900891] .... register #00: 02000000 [ 8.904855] ....... : physical APIC id: 02 [ 8.909336] ....... : Delivery Type: 0 [ 8.913472] ....... : LTS : 0 [ 8.917609] .... register #01: 00770020 [ 8.921571] ....... : max redirection entries: 77 [ 8.926768] ....... : PRQ implemented: 0 [ 8.931161] ....... : IO APIC version: 20 [ 8.935641] .... register #02: 00000000 [ 8.939603] ....... : arbitration: 00 [ 8.943738] .... IRQ redirection table: [ 8.947702] IOAPIC 0: [ 8.950123] pin00, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) [ 8.958130] pin01, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) [ 8.966138] pin02, enabled , edge , high, V(02), IRR(0), S(0), remapped, I(0001), Z(0) [ 8.974404] pin03, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) [ 8.982411] pin04, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) [ 8.990419] pin05, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) [ 8.998425] pin06, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) [ 9.006463] pin07, disabled, edge , high, V(00), IRR(0), S(0), physical, D(00), M(0) To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Rong Chen