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WIth the 4.10-rc8 kernel, I keep getting the following (non-fatal) error on every boot. With previous kernels, the mcelog daemon used to register errors occasionally. But the errors messages weren't recurrent on every boot. Filing it here, in case it is not a hardware bug. On 4.10-rc8: Feb 16 22:23:58 learner kernel: CPU: Physical Processor ID: 0 Feb 16 22:23:58 learner kernel: CPU: Processor Core ID: 0 Feb 16 22:23:58 learner kernel: ENERGY_PERF_BIAS: Set to 'normal', was 'performance' Feb 16 22:23:58 learner kernel: ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8) Feb 16 22:23:58 learner kernel: mce: CPU supports 7 MCE banks Feb 16 22:23:58 learner kernel: CPU0: Thermal monitoring enabled (TM1) Feb 16 22:23:58 learner kernel: process: using mwait in idle threads Feb 16 22:23:58 learner kernel: Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 Feb 16 22:23:58 learner kernel: Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 Feb 16 22:23:58 learner kernel: Freeing SMP alternatives memory: 24K Feb 16 22:23:58 learner kernel: ftrace: allocating 25290 entries in 99 pages Feb 16 22:23:58 learner kernel: smpboot: Max logical packages: 4 Feb 16 22:23:58 learner kernel: ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 Feb 16 22:23:58 learner kernel: TSC deadline timer enabled Feb 16 22:23:58 learner kernel: smpboot: CPU0: Intel(R) Core(TM) i7-4510U CPU @ 2.00GHz (family: 0x6, model: 0x45, stepping: 0x1) Feb 16 22:23:58 learner kernel: mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 6: ae0000000040110a Feb 16 22:23:58 learner kernel: mce: [Hardware Error]: TSC 0 ADDR fef87300 MISC 78a0000086 Feb 16 22:23:58 learner kernel: mce: [Hardware Error]: PROCESSOR 0:40651 TIME 1487264016 SOCKET 0 APIC 0 microcode 1f Feb 16 22:23:58 learner kernel: Performance Events: PEBS fmt2+, Haswell events, 16-deep LBR, full-width counters, Intel PMU driver. Feb 16 22:23:58 learner kernel: ... version: 3 Feb 16 22:23:58 learner kernel: ... bit width: 48 Feb 16 22:23:58 learner kernel: ... generic registers: 4 Feb 16 22:23:58 learner kernel: ... value mask: 0000ffffffffffff Feb 16 22:23:58 learner kernel: ... max period: 00007fffffffffff Feb 16 22:23:58 learner kernel: ... fixed-purpose events: 3 Feb 16 22:23:58 learner kernel: ... event mask: 000000070000000f Feb 16 22:23:58 learner kernel: NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter. Feb 16 22:23:58 learner kernel: smp: Bringing up secondary CPUs ... Feb 16 22:23:58 learner kernel: x86: Booting SMP configuration: Feb 16 22:23:58 learner kernel: .... node #0, CPUs: #1 #2 #3 Feb 16 22:23:58 learner kernel: smp: Brought up 1 node, 4 CPUs Feb 16 22:23:58 learner kernel: smpboot: Total of 4 processors activated (20765.31 BogoMIPS) On kernels prior to 4.10, occasional log: [ 0.041496] mce: CPU supports 7 MCE banks [ 299.540930] mce: [Hardware Error]: Machine check events logged and mcelog: failed to prefill DIMM database from DMI data Hardware event. This is not a software error. MCE 0 CPU 0 BANK 5 MISC 38a0000086 ADDR fef81880 TIME 1432455005 Sun May 24 13:40:05 2015 MCG status: MCi status: Error overflow Uncorrected error MCi_MISC register valid MCi_ADDR register valid Processor context corrupt MCA: corrected filtering (some unreported errors in same region) Generic CACHE Level-2 Generic Error STATUS ee0000000040110a MCGSTATUS 0 MCGCAP c07 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 69 Hardware event. This is not a software error. MCE 1 CPU 0 BANK 6 MISC 78a0000086 ADDR fef81780 TIME 1432455005 Sun May 24 13:40:05 2015 MCG status: MCi status: Uncorrected error MCi_MISC register valid MCi_ADDR register valid Processor context corrupt MCA: corrected filtering (some unreported errors in same region) Generic CACHE Level-2 Generic Error STATUS ae0000000040110a MCGSTATUS 0 MCGCAP c07 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 69 Hardware event. This is not a software error. MCE 2 CPU 0 BANK 5 MISC 38a0000086 ADDR fef81880 TIME 1432455114 Sun May 24 13:41:54 2015 MCG status: MCi status: Error overflow Uncorrected error MCi_MISC register valid MCi_ADDR register valid Processor context corrupt MCA: corrected filtering (some unreported errors in same region) Generic CACHE Level-2 Generic Error STATUS ee0000000040110a MCGSTATUS 0 MCGCAP c07 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 69 Hardware event. This is not a software error. MCE 3 CPU 0 BANK 6 MISC 78a0000086 ADDR fef81780 TIME 1432455114 Sun May 24 13:41:54 2015 MCG status: MCi status: Uncorrected error MCi_MISC register valid MCi_ADDR register valid Processor context corrupt MCA: corrected filtering (some unreported errors in same region) Generic CACHE Level-2 Generic Error STATUS ae0000000040110a MCGSTATUS 0 MCGCAP c07 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 69 Full kernel log is available at: https://people.debian.org/~rrs/tmp/kernel-4.10-rc8.log I have also compiled a list of similar bugs reported: https://bugzilla.redhat.com/show_bug.cgi?id=1152717 https://bugzilla.redhat.com/show_bug.cgi?id=1082211 https://www.researchut.com/blog/lenovo-yoga-2-13-debian - -- Ritesh Raj Sarraf RESEARCHUT - http://www.researchut.com "Necessity is the mother of invention." -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEQCVDstmIVAB/Yn02pjpYo/LhdWkFAlimp1QACgkQpjpYo/Lh dWmnJBAAgaLk89VHcTG36eu4YPgcor2YVkwLrrRxYByyQlKwVHYZN+5KiIzBMo8k IcreCkejg5/4aZRn32PHaYiO7MdcyU6/91xdmUjwuWtwNEsBqJRjn576C7KvbPHw MnCuF2ho6TwY2tcx1YsNyNbspgxB8FwLDsFXBnnUwrtRWdD7Ut0NNeN5IaKvruw0 RMrEGeZxWBxs/ivDzB7At0eW+64MFu0bK7BfRLpf1EBoXaMWwRQMONn0n+4Ku5f5 kRU+24lnsUnrV0b0MCUNkQeT01zEYf75fa+YN6ior9T4KFeooEbNK13RFuvTbWgv qiFWrHy8zHHDPa2QTG3Vow+teBlZh22q6evdICIsKKnca2obELUYY5jqMydnDeh1 tBFTeoJjSLZNCC0JyzJv5d8ujk3D16V7+NfxZcOUQgWCuXlj3FICJ3uDYq8v13L3 r4CoiSSx2Zwx4oYobyQmBQoVMXlN1hqAXyRW0GxaUQzHFykqVpZZlCWsJ67gJtC3 B8s383UgDa9dKXxKeIsD4vS33LP0UW3ypRwS5AOCJOOFilDKEzxUn4Z0EG1GG6ib hC8jz7rK0zIdcl3N4zBfnKcc3h9vsj3IMS7fjqE5Ck0CWfGdVzxxvz+INSwSUk/P xaFvzRL/z8nP4qZazlDvq0f15C3U3KGO5fRE3QF+r4zleBQE+Kw= =9WUT -----END PGP SIGNATURE-----
