Re: Bricked x86 CPU with software?

From: Pavel Machek
Date: Thu Jan 04 2018 - 15:06:44 EST


Hi!

> In all my years of extensive experience writing drivers and kernels, I never came across a situation
> where you could brick an x86 CPU. Not until recently, when I was working on debugging a piece of
> code and I bricked an Intel CPU. I am not talking about an experimental motherboard or anything
> exotic or an electrical issue where the CPU got fried, but before the software code execution the CPU
> was fine and then it´s dead. There were signs that something was not right, that the code was causing
> unusual behavior, which is what I was debugging.
>
> Has anyone else ever experienced a bricked CPU after executing software code? I just wanted to get
> input from the community to see if anyone had had any experience like that, since it seems rather
> unusual to me.

Never seen that before. Can you try to brick another one? :-).

You may want to remove AC power and battery, wait for half an hour,
then attempt to boot it...

Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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