https://bugzilla.kernel.org/show_bug.cgi?id=217720
Bug ID: 217720
Summary: System powers down when running particular programs
Product: ACPI
Version: 2.5
Hardware: AMD
OS: Linux
Status: NEW
Severity: high
Priority: P3
Component: Power-Processor
Assignee: acpi_power-proces...@kernel-bugs.osdl.org
Reporter: yifan...@rochester.edu
Regression: No
I have a server with AMD EPYC 7773X 64-Core Processor (ucode:
20230625.ee91452d-5) running on supermicro h12ssl-i.
I mistakenly enabled the ACPI-based driver instead of amd-pstate. It turns out
that, when running a particular program (the source code is at
https://github.com/SchrodingerZhu/paguroidea/tree/acpi-cpupower-bug and I
invoked `cargo bench`), the whole system powers down immediately (the video
output is cut; the power LED is down; the BMC seems to be alive as the fan is
still running but I cannot get any log from SEL). I reproduced this under both
schedutil and performance governor (others are not tested).
I switched to amd_pstate=guided now, and the problem is gone. So I think this
should be a problem with the ACPI driver.
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