Skylake, Kaby Lake chips have a crash bug with hyperthreading enabled

[Geoff]

The Debian people found a processor bug affecting all Intel Skylake and Kabylake processors. This only occurs with hyperthreading enabled. So the current work around is to disable that in your BIOS/UEFI until a proper fix can be deployed. Linux users need not to worry as updated microcode has been pushed out to most distros by now. If you are not running Linux be on the look out for an updated BIOS from your motherboard vendor and/or a microcode patch from your OS vendor.

 

This warning advisory is relevant for users of systems with the Intel

processors code-named "Skylake" and "Kaby Lake". These are: the 6th and

7th generation Intel Core processors (desktop, embedded, mobile and

HEDT), their related server processors (such as Xeon v5 and Xeon v6), as

well as select Intel Pentium processor models.

 

TL;DR: unfixed Skylake and Kaby Lake processors could, in some

situations, dangerously misbehave when hyper-threading is enabled.

Disable hyper-threading immediately in BIOS/UEFI to work around the

problem. Read this advisory for instructions about an Intel-provided

fix.

 

https://lists.debian.org/debian-devel/2017/06/msg00308.html