Linux platform/x86/amd/pmc - IRQ1 wakeup disabled unconditionally: The AMD PMC driver disabled IRQ1 wakeup in cases

Impact

The AMD PMC driver disabled IRQ1 wakeup in cases where i8042 had never enabled it, corrupting interrupt wakeup configuration. Low-severity platform-driver correctness bug; included because the amd/pmc driver autoloads on AMD hosts whether or not the platform needs it, and unnecessary loaded drivers are unnecessary attack surface.

Who can reach it

Local, through platform power-management paths.

What to do

Distro kernel update plus reboot, or blacklist the module on server images where power management is handled by the BMC and BIOS anyway.

References

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