#986296 i7z generates two kernel messages per second while running

Package:
i7z
Source:
i7z
Description:
reporting tool for i7, i5, i3 CPUs
Submitter:
Date:
2021-11-03 23:00:03 UTC
Severity:
important
#986296#5
Date:
2021-04-02 15:53:40 UTC
From:
To:
While i7z is running, the syslog receives 60 messages every 30 seconds:

Apr  2 11:47:58 ozymandias kernel: [319599.175688] msr: Write to unrecognized MSR 0x38f by i7z (pid: 180370). Please report to x86@kernel.org.
Apr  2 11:48:32 ozymandias kernel: [319633.641731] filter_write: 59 callbacks suppressed
Apr  2 11:48:32 ozymandias kernel: [319633.641732] msr: Write to unrecognized MSR 0x38f by i7z (pid: 180370). Please report to x86@kernel.org.
Apr  2 11:49:07 ozymandias kernel: [319668.104971] filter_write: 59 callbacks suppressed

Obviously the log traffic alone is undesirable.

i9-10900K processor, W430 chipset, Supermicro X12SCA-F motherboard.
#986296#10
Date:
2021-04-02 16:11:44 UTC
From:
To:
I don't think that i7z properly supports anything newer than haswell.
Some bits may work on newer generations, but some obviously don't.

Upstream seems to be dead ...

Andreas
#986296#15
Date:
2021-11-03 22:40:31 UTC
From:
To:
Hi:

The reports happen with CPUs older than haswell too. The issue seems
to be newer kernels checking what access the MSR registers. Previously
i7z worked without triggering the logging. Other software is also
being affected, for example
https://github.com/erpalma/throttled/issues/228

Cheers,
GSR