ps2: Keypresses cause kernel to hang

Question

ps2: Keypresses cause kernel to hang

notYuriy opened this issue 4 years ago · 3 comments

If keypresses are spammed right after boot, it is possible to make kernel to hang like here

It is not known which subsystem causes that.

Answer 1 · 2021-05-13T14:58:53.000Z

This may be due to an interrupt arriving before routing them to the CPU, as can be seen here, the IOAPIC has a pending keyboard interrupt but the LAPIC is oblivious to it:

Answer 2 · 2021-05-13T18:23:53.000Z

No, the commit linked in the close

Answer 3 · 2021-05-13T18:25:19.000Z

Problem was pressing a key and interrupting by printing during printing, and probably messing up some logger state (maybe virtio?)