mce errors when using kernel 6.5.0-14-generic

[Roxana Nicolescu]

Hi,

Could you submit a bug report so we can properly keep track of this? 
This <https://wiki.ubuntu.com/Kernel/Bugs> should help.
For now I can tell that mce detected an error on CPU 0 on Bank 27 (one 
of the RAM module).
I would recommend a BIOS update first and see what happens.
It would be also useful to get the full boot logs, maybe something else 
happened there.

Roxana

On 12/01/2024 21:02, Karl C. Behler wrote:
>
> Dear Kernel-Team,
>
> sorry for bothering and contacting you directly.
>
> My new AMD64 based computer was running fine with kernel 6.2 since mid 
> of December 2023.
>
> The upgrade to 6.5.0-14-generic (10th Jan 2024) ends in it's not 
> booting any more with MCE error messages in a very early stage:
>
>> [    1.062769] kernel: mce: [Hardware Error]: Machine check events logged
>> [    1.062773] kernel: mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 27: faa000000000080b
>> [    1.062782] kernel: mce: [Hardware Error]: TSC 0 MISC d012000200000000 SYND 5d000000 IPID 1002e00000500
>> [    1.062790] kernel: mce: [Hardware Error]: PROCESSOR 2:a20f12 TIME 1704978569 SOCKET 0 APIC 0 microcode a20120e
> Reverting to the 6.2.0-39-generic kernel and these messages vanish 
> completely (no mce errors in dmesg).
>
> However, I couldn't find any hint what to do. It seems I'm the only 
> one having this issue at the moment.
>
> I posted it to Ubuntuusers Germany. However, it had over 100 reads but 
> no response after two days.
>
> https://forum.ubuntuusers.de/topic/mce-hardware-error-nach-kernel-update-6-5-0-14/
>
> It seems a similar issue was reported a couple of years ago. The 
> recommendation was to use mcelog to have a look into the machine check 
> logs. Only an old version of this package is available and using this 
> it says it does not know the CPU.
>
>> System:
>>    Kernel: 6.2.0-39-generic x86_64 bits: 64 compiler: N/A Desktop: GNOME 42.9
>>      Distro: Ubuntu 22.04.3 LTS (Jammy Jellyfish)
>> Machine:
>>    Type: Desktop System: Micro-Star product: MS-7C56 v: 1.0
>>      serial: <superuser required>
>>    Mobo: Micro-Star model: MPG B550 GAMING PLUS (MS-7C56) v: 1.0
>>      serial: <superuser required> UEFI: American Megatrends LLC. v: 1.F0
>>      date: 10/11/2023
>> CPU:
>>    Info: 16-core model: AMD Ryzen 9 5950X bits: 64 type: MT MCP arch: Zen 3
>>      rev: 2 cache: L1: 1024 KiB L2: 8 MiB L3: 64 MiB
>>    Speed (MHz): avg: 2518 high: 3400 min/max: 2200/5083 boost: enabled
>>      cores: 1: 2200 2: 2200 3: 2200 4: 3400 5: 2200 6: 2200 7: 2200 8: 2879
>>      9: 2200 10: 2200 11: 2879 12: 3400 13: 3400 14: 2200 15: 3400 16: 2200
>>      17: 2200 18: 2200 19: 3400 20: 2200 21: 3400 22: 2200 23: 2913 24: 2200
>>      25: 2200 26: 3122 27: 2200 28: 2200 29: 2200 30: 2200 31: 2200 32: 2200
>>      bogomips: 217596
>>    Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
>> Graphics:
>>    Device-1: NVIDIA vendor: Gigabyte driver: nvidia v: 545.23.08
>>      bus-ID: 2b:00.0
>>    Display: x11 server: X.Org v: 1.21.1.4 driver: X: loaded: nvidia
>>      unloaded: fbdev,modesetting,nouveau,vesa gpu: nvidia
>>      resolution: 4096x2160~60Hz
>>    OpenGL: renderer: NVIDIA GeForce RTX 4060 Ti/PCIe/SSE2
>>      v: 4.6.0 NVIDIA 545.23.08 direct render: Yes
>> **
>
>
>
>
>
>
>
> If this problem is of any relevance for the team and if you are about 
> to attend to it, I'm ready to provide any information you are 
> requesting for.
>
> Please let me know about your decision.
>
> Best regards
> Karl
>
> -- 
> Karl C. Behler
> Watzmannring 54
> 85748 Garching b. München
> phone +49 89 32679750
> mobile +49 1577 4745401
>
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