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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1931845
Title:
Lots of cme when using 5.8.0 but not with 5.4.0
Status in linux package in Ubuntu:
Incomplete
Bug description:
I'm using a 20.04.2 LTS install on a t470 thinkpad. After installing
the linux-image-generic-hwe-20.04 the boot kernel switched to 5.8.0.55
when a lot of mce messages appeared in the kernel log, e.g. kern.log,
e.g.:
Jun 14 10:57:50 monster kernel: [ 0.627088] mce: [Hardware Error]: CPU 1:
Machine Check: 0 Bank 3: 8c40004000100151
Jun 14 10:57:50 monster kernel: [ 0.627089] mce: [Hardware Error]: TSC
c619c16f1 ADDR 4414b2940 MISC 306485
Jun 14 10:57:50 monster kernel: [ 0.627090] mce: [Hardware Error]:
PROCESSOR 0:806e9 TIME 1623661045 SOCKET 0 APIC 2 microcode de
Using rasdaemon and the fixed ras-mc-ctl script from upstream this
got elaborated to
$ ras-mc-ctl --errors
--snip--
188 2021-06-14 10:54:21 +0200 error: Instruction CACHE Level-1
Instruction-Fetch Error, mcg mcgstatus=0, mci Error_overflow Corrected_error
Threshold based error status: yellow, mcgcap=0x00000c08,
status=0xcc400e8000100151, addr=0x2146b9240, misc=0x00516485,
walltime=0x60c7193d, cpu=0x00000001, cpuid=0x000806e9, apicid=0x00000002,
bank=0x00000003
189 2021-06-14 10:54:22 +0200 error: Instruction CACHE Level-1
Instruction-Fetch Error, mcg mcgstatus=0, mci Error_overflow Corrected_error
Threshold based error status: yellow, mcgcap=0x00000c08,
status=0xcc40020000100151, addr=0x4344eee40, misc=0x02526485,
walltime=0x60c7193e, cpu=0x00000001, cpuid=0x000806e9, apicid=0x00000002,
bank=0x00000003
190 2021-06-14 10:54:26 +0200 error: Instruction CACHE Level-1
Instruction-Fetch Error, mcg mcgstatus=0, mci Error_overflow Corrected_error
Threshold based error status: yellow, mcgcap=0x00000c08,
status=0xcc40064000100151, addr=0x21447e7c0, misc=0x02526485,
walltime=0x60c71942, cpu=0x00000001, cpuid=0x000806e9, apicid=0x00000002,
bank=0x00000003
--snap--
Is this just better reporting by the 5.8 kernel or is this a mismatch of
kernel and hardware?
I have no sudden application crashes or other indications for failing
hardware. And a few hours of memtest86+ (not the broken version from the repo
but a current one from a boot cd) report no errors.
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