[dunkelheit]

Although in slightly different vein and, strictly speaking, not reported to a public bug tracker, this AMD CPU bug report by Matt Dillon is probably my favourite (link: https://www.dragonflybsd.org/mailarchive/kernel/2012-03/msg0...). Tracking the intermittent problem to the lowest level and blaming the CPU and not the numerous layers above it surely takes guts.

[36erhefg]

How do you even fix that? Do you have to update every compiler so it checks the generate machine code for that problematic sequence and insert some nop's, or is there a way to update the cpu itself?