Linux cpufreq/amd-pstate-ut - kernel panic when loading the unit-test driver: Loading the amd-pstate unit-test module

Impact

Loading the amd-pstate unit-test module panics the kernel. A test module shipped in production kernels that crashes the host when loaded - relevant because automated hardware-validation tooling on a new GPU fleet is exactly the thing that loads every available module to see what happens.

Who can reach it

Local, requires the ability to load the amd_pstate_ut module - so root, or automated burn-in tooling running as root.

What to do

Distro kernel update plus reboot. Meanwhile, keep amd_pstate_ut out of any module-loading sweep in your node acceptance testing.

References