Intel® Processors, Tools, and Utilities
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Core i9-10900X machine check exception being thrown


I've been troubleshooting a new build with a Core i9-10900X

I intercepted a kernel panic in linux and decoded a machine check exception with the following output:

Hardware event. This is not a software error. CPU 0 BANK 9 TSC 2bce03940f4 RIP !INEXACT! 10:ffffffffb66ccee5 MISC 207aa600c00086 ADDR fbe00f40 TIME 1591355662 Fri Jun 5 11:14:22 2020 MCG status:RIPV MCIP MCi status: Uncorrected error Error enabled 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 be200000000c110a MCGSTATUS 5 CPUID Vendor Intel Family 6 Model 85 Step 7 RIP: mutex_spin_on_owner+0x65/0x0} SOCKET 0 APIC 0 MICROCODE 500012c


I am able to install linux on the machine but experience enormous amounts on input lag through the connected USB peripherals. Occasionally I will observe a TSC firmware log with a kernel panic as well. Any help you could give me in diagnosing whether this is indeed a CPU cache issue, or a BIOS issue or indeed a memory DIMM issue would be greatly appreciated.


My CPU details are as follows:


Architecture:       x86_64

CPU op-mode(s):     32-bit, 64-bit

Byte Order:         Little Endian

Address sizes:      46 bits physical, 48 bits virtual

CPU(s):             20

On-line CPU(s) list: 0-19

Thread(s) per core: 2

Core(s) per socket: 10

Socket(s):          1

NUMA node(s):       1

Vendor ID:          GenuineIntel

CPU family:         6

Model:              85

Model name:         Intel(R) Core(TM) i9-10900X CPU @ 3.70GHz

Stepping:           7

CPU MHz:            2073.818

CPU max MHz:        4700.0000

CPU min MHz:        1200.0000

BogoMIPS:           7399.70

Virtualization:     VT-x

L1d cache:          32K

L1i cache:          32K

L2 cache:           1024K

L3 cache:           19712K

NUMA node0 CPU(s):  0-19

Flags:              fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault cat_l3 cdp_l3 invpcid_single ssbd mba ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts hwp hwp_act_window hwp_pkg_req avx512_vnni md_clear flush_l1d arch_capabilities


And I see this output in dmesg during boot:


[   0.000000] Linux version 5.4.41 (me@localhost) (gcc version 9.2.0 (GCC))

[   0.000000] SMBIOS 2.8 present.

[   0.000000] DMI: Micro-Star International Co., Ltd. MS-7B94/X299 PRO (MS-7B94), BIOS 1.32 01/15/2020

[   0.000000] tsc: Detected 3700.000 MHz processor

[   0.000000] tsc: Detected 3699.850 MHz TSC

[   0.000000] [Firmware Bug]: TSC ADJUST: CPU0: -7173666016 force to 0


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3 Replies

JThom124, Thank you for posting in the Intel® Communities Support.


In reference to your inquiry, for us to be able to provide the most accurate assistance on this matter, we just wanted to confirm the components being used in your platform, please attach the SSU report so we can verify those details, to attach the report, once you choose "reply" select the "clip" icon on the lower-left corner:


Any questions, please let me know



Albert R.


Intel Customer Support Technician

A Contingent Worker at Intel

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Many thanks for getting back to me. On changing the motherboard from an MSI X299 Pro to a Gigabyte X299 Aorus Master - the issues are all resolved.


I guess at this point the MSI firmware just wasn't working correctly.


Thank you nevertheless for your help.



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JThom124, You are very welcome, thank you very much for letting us know that information.


Perfect, excellent, it is great to hear the problem got resolved.


Any other inquiries, do not hesitate to contact us again.



Albert R.


Intel Customer Support Technician

A Contingent Worker at Intel

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