[WARNING] Intel Skylake/Kaby Lake processors: broken hyper-threading

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.
Read more: https://lists.debian.org/debian-devel/2017/06/msg00308.html?source=Snapzu