Intel Comet Lake MCE error

[tonychangtw219]

I get the one testing mbs with Intel new general processor( Comet Lake ) Intel(R) Celeron(R) G5900TE CPU @ 3.00GHz

when installing the Centos 7.7 1908 DVD and install some packages. we find the message and dmesg will have mce error/warning.


Due to Centos 7.7 yum repolist mcelog only support 144 version.

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[root@localhost ~]# uname -a
Linux localhost.localdomain 3.10.0-1062.18.1.el7.x86_64 #1 SMP Tue Mar 17 23:49:17 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost ~]# cat /etc/redhat-release
CentOS Linux release 7.7.1908 (Core)
[root@localhost ~]# mcelog
mcelog: Family 6 Model 165 CPU: only decoding architectural errors
-----------------------------------------------------------------------------------------

I try to update the MCElog 170 version by github can solve decoding architectural errors issue.

[root@localhost ~]# mcelog --version
mcelog v170
[root@localhost ~]#
----------------------------------------------------------------------------------------------------------------------------------------------------
But, below kernel warning I cannot fix, and try to update to kernel 5.7.4 result is the same, I will share to the BIOS team to check it.

[mbtuser@localhost ~]$ uname -a
Linux localhost.localdomain 5.7.4-1.el7.elrepo.x86_64 #1 SMP Thu Jun 18 10:06:20 EDT 2020 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost ~]# cat /var/log/messages |grep -i mce
Jun 23 14:10:57 localhost kernel: mce: CPU0: Thermal monitoring enabled (TM1)
Jun 23 14:10:57 localhost kernel: mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 8.
Jun 23 14:10:57 localhost kernel: mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 9.
Jun 23 14:10:57 localhost kernel: mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 10.
Jun 23 14:10:57 localhost kernel: mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 11.
Jun 23 14:10:57 localhost kernel: mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 12.
Jun 23 14:10:57 localhost kernel: mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 13.
Jun 23 14:10:57 localhost kernel: mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 14.
[root@localhost ~]# cat /var/log/dmesg |grep -i mce
[ 0.141754] mce: CPU0: Thermal monitoring enabled (TM1)
[ 0.433263] mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 8.
[ 0.433264] mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 9.
[ 0.433264] mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 10.
[ 0.433264] mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 11.
[ 0.433265] mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 12.
[ 0.433265] mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 13.
[ 0.433265] mce: [Firmware Bug]: Ignoring request to disable invalid MCA bank 14.

may we need Team help to advise and support if the problem can solve on Kernel update in the future?

[chemal]

This isn't an mce error, it's just a warning spit out during the setup of the mce driver: your firmware (bios) is buggy. Because the kernel detected this and worked around it, no further action is required.

Besides: 7.7 is dead by now and totaly unsupported.