unchecked MSR access error: WRMSR to 0xda0

[Toralf Förster]

I do get at all of my Debian bullseye VPS at Hetzner this message during
boot (once):

Aug 16 06:08:42 uhu kernel: [1726344.567946] device-mapper: uevent:
version 1.0.3
Aug 16 06:08:42 uhu kernel: [1726344.571939] device-mapper: ioctl:
4.43.0-ioctl (2020-10-01) initialised: dm-d...@redhat.com
Aug 16 06:09:36 uhu kernel: [ 0.000000] Linux version 5.10.0-17-amd64
(debian...@lists.debian.org) (gcc-10 (Debian 10.2.1-6) 10.2.1
20210110, GNU ld (GNU Binutils for Debian) 2.35.2)
#1 SMP Debian 5.10.136-1 (2022-08-13)
Aug 16 06:09:36 uhu kernel: [ 0.000000] Command line:
BOOT_IMAGE=/boot/vmlinuz-5.10.0-17-amd64
root=UUID=a1c24a20-66b4-4e88-a92c-2e264ef511e7 ro consoleblank=0
systemd.show_status=true c
onsole=tty1 console=ttyS0
Aug 16 06:09:36 uhu kernel: [ 0.000000] unchecked MSR access error:
WRMSR to 0xda0 (tried to write 0x0000000000000000) at rIP:
0xffffffffb7a6e874 (native_write_msr+0x4/0x20)
Aug 16 06:09:36 uhu kernel: [ 0.000000] Call Trace:
Aug 16 06:09:36 uhu kernel: [ 0.000000] ? fpu__init_cpu_xstate+0xb4/0xf0
Aug 16 06:09:36 uhu kernel: [ 0.000000] ?
fpu__init_system_xstate+0x167/0x9e1
Aug 16 06:09:36 uhu kernel: [ 0.000000] ? cpu_has_amd_erratum+0xa1/0xc0
Aug 16 06:09:36 uhu kernel: [ 0.000000] ? fpu__init_system+0x11d/0x15e
Aug 16 06:09:36 uhu kernel: [ 0.000000] ? early_cpu_init+0x498/0x4c0
Aug 16 06:09:36 uhu kernel: [ 0.000000] ? setup_arch+0xb7/0xc6e
Aug 16 06:09:36 uhu kernel: [ 0.000000] ? slab_is_available+0x5/0x20
Aug 16 06:09:36 uhu kernel: [ 0.000000] ? start_kernel+0x64/0x599
Aug 16 06:09:36 uhu kernel: [ 0.000000] ? load_ucode_bsp+0x4c/0xd1
Aug 16 06:09:36 uhu kernel: [ 0.000000] ?
secondary_startup_64_no_verify+0xb0/0xbb
Aug 16 06:09:36 uhu kernel: [ 0.000000] x86/fpu: Supporting XSAVE
feature 0x001: 'x87 floating point registers'
Aug 16 06:09:36 uhu kernel: [ 0.000000] x86/fpu: Supporting XSAVE
feature 0x002: 'SSE registers'
Aug 16 06:09:36 uhu kernel: [ 0.000000] x86/fpu: Supporting XSAVE
feature 0x004: 'AVX registers'
Aug 16 06:09:36 uhu kernel: [ 0.000000] x86/fpu: xstate_offset[2]:
576, xstate_sizes[2]: 256
Aug 16 06:09:36 uhu kernel: [ 0.000000] x86/fpu: Enabled xstate
features 0x7, context size is 832 bytes, using 'compacted' format.


Is this issue related to the underlying Hetzner Hardware or to the package ?

--
Toralf