Bug#986296: i7z generates two kernel messages per second while running

[GSR]

Package: i7z
Version: 0.27.2+git2013.10.12-g5023138-7
Followup-For: Bug #986296

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
 

Bug#986296: i7z generates two kernel messages per second while running

[Andreas Beckmann]

On 02/04/2021 17.53, Dennis Boone wrote:

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 x...@kernel.org.



i9-10900K processor, W430 chipset, Supermicro X12SCA-F motherboard.


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

Bug#986296: i7z generates two kernel messages per second while running

[Dennis Boone]

Package: i7z
Version: 0.27.2+git2013.10.12-g5023138-7
Severity: important

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 x...@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 x...@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.


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, armhf

Kernel: Linux 5.10.0-5-amd64 (SMP w/20 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_CPU_OUT_OF_SPEC, 
TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=es_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages i7z depends on:
ii  libc6 2.31-10
ii  libncurses6   6.2+20201114-2
ii  libtinfo6 6.2+20201114-2
ii  msr-tools 1.3-3+b1
ii  ruby  1:2.7+2
ii  ruby1.8 [ruby-interpreter]1.8.7.358-7.1
ii  ruby1.9.1 [ruby-interpreter]  1.9.3.194-8.2

i7z recommends no packages.

i7z suggests no packages.

-- no debconf information