Hello,

I've noticed that I've been getting certain warnings in my message log buffer, 
namely:
amdzen: [ID 696525 kern.warning] WARNING: amdzen0: failed to online child dip 
usmn: -1
amdzen: [ID 696525 kern.warning] WARNING: amdzen0: failed to online child dip 
zen_udf: -1
zen_umc: [ID 735894 kern.warning] WARNING: zen_umc-1: encountered invalid 
channel interleave on rule 0, df/inst 0x0/0x2: 0x8
zen_umc: [ID 310245 kern.warning] WARNING: zen_umc-1: failed to read DRAM rule 
0 on df/inst 0x0/0x2: 22
amdzen: [ID 696525 kern.warning] WARNING: amdzen0: failed to online child dip 
zen_umc: -1
The two consecutive zen_umc warnings also get triggered on other occasions as 
well (I don't know what's the condition to trigger them), the amdzen warnings, 
however, do not - they are only at immediate post-boot time. The frequency of 
warnings is somewhere around 1-5 times per day, I'd say, depending on the 
workload (at the moment my OmniOS install is only a simple file-server). 
Sometimes there are multiple days when the warning is not triggered.

I've tested my RAM, it passes 16 cycles on MemTest86+, so I consider it fine 
for the most part. The CPU in question is AMD EPYC 3151 4C/8T with SMTEN 
enabled.
# psrinfo -v
Status of virtual processor 0 as of: 03/03/2024 10:16:03
  on-line since 03/03/2024 10:12:18.
  The i386 processor operates at 2700 MHz,
        and has an i387 compatible floating point processor.
Status of virtual processor 1 as of: 03/03/2024 10:16:03
  on-line since 03/03/2024 10:12:18.
  The i386 processor operates at 2700 MHz,
        and has an i387 compatible floating point processor.
Status of virtual processor 2 as of: 03/03/2024 10:16:03
  on-line since 03/03/2024 10:12:18.
  The i386 processor operates at 2700 MHz,
        and has an i387 compatible floating point processor.
Status of virtual processor 3 as of: 03/03/2024 10:16:03
  on-line since 03/03/2024 10:12:18.
  The i386 processor operates at 2700 MHz,
        and has an i387 compatible floating point processor.

prtconf -v says 
https://kpaste.infomaniak.com/yyiIxZIc5yyfJqFAYxRTa6IgBX3xUAt8#HmgmZ1NDPK6nPqj5aMdNqBMRmddTpu5FJoHoq2jEo1MK
/var/adm/messages post-boot says: 
https://kpaste.infomaniak.com/jInnfGnMLqRagUnBNUxtcbom8ZrRpKvo#7JNHdrtjChMK7BikDUSPNmuNG1ndXP95eddMnBFnYbML

Would be grateful if anyone had insights as to whether I can simply ignore 
this, or whether there are some tweaks or workarounds around this. Happy to 
provide more info as needed.

Thanks
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