broken Hyperthreading / microcode Defekt in Kabylake und Skylake CPU ?

[pumuckel]

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


Zitat: " This advisory is about a processor/microcode defect recently identified
on Intel Skylake and Intel Kaby Lake processors with hyper-threading
enabled. This defect can, when triggered, cause unpredictable system
behavior: it could cause spurious errors, such as application and system
misbehavior, data corruption, and data loss.

It was brought to the attention of the Debian project that this defect
is known to directly affect some Debian stable users (refer to the end
of this advisory for details), thus this advisory.

Please note that the defect can potentially affect any operating system
(it is not restricted to Debian, and it is not restricted to Linux-based
systems). It can be either avoided (by disabling hyper-threading), or
fixed (by updating the processor microcode).

Due to the difficult detection of potentially affected software, and the
unpredictable nature of the defect, all users of the affected Intel
processors are strongly urged to take action as recommended by this
advisory."



hat jemand von Euch dazu evtl mehr Infos irgendwo gesehen ? Ich selbst hab nur einen Server mit Kaby laufen (zugegeben nicht produktiv) und bisher nichts festgestellt ....

 

[pumuckel]

... OK , scheint zu stimmen:

Bug in aktuellen Intel-Prozessoren macht die Runde | heise online

... geschrieben von unterwegs (Handy)

 

[Alashondra]

Danke ... gibt schon nen Thread vom HWL News Bot zu dme Thema ...

 

[rolle1112]

Gilt das nur für Desktop-Prozessoren oder auch für Mobile Kaby und Skylakes ?
Danke im voraus

 

[Sir Diablo]

Da selbe Architektur, ist das selbstverständlich auch über die gesamte Produktpalette

 

[rolle1112]

Naja, bei AMD soll der Agesa noch nicht so Top sein jetzt hat Intel also auch einen an die Backe bekommen - verarschen die uns eigentlich nur noch mit ihrem Müll ?

 

[Powl]

Naja, bei AMD soll der Agesa noch nicht so Top sein jetzt hat Intel also auch einen an die Backe bekommen - verarschen die uns eigentlich nur noch mit ihrem Müll ?

Bau du mal ne cpu mit milliarden transistoren, hochkomplexer technik und optimierter software, ohne dass fehler drin sind.

Sent from OP3T

 

[mr.dude]

Bau du mal ne cpu mit milliarden transistoren, hochkomplexer technik und optimierter software, ohne dass fehler drin sind.

Das ist schon richtig. Bei Intel scheinen die Probleme aber auch ein Stück weit hausgemacht zu sein. Man hat nicht erst seit SKL-X das Gefühl, dass Intel Produkte überhastet und buggy auf den Markt wirft. Dazu eine interessante Aussage eines ehemaligen Intel Mitarbeiters:

As someone who worked in an Intel Validation group for SOCs until mid-2014 or so I can tell you, yes, you will see more CPU bugs from Intel than you have in the past from the post-FDIV-bug era until recently.

Why?

Let me set the scene: It’s late in 2013. Intel is frantic about losing the mobile CPU wars to ARM. Meetings with all the validation groups. Head honcho in charge of Validation says something to the effect of: “We need to move faster. Validation at Intel is taking much longer than it does for our competition. We need to do whatever we can to reduce those times… we can’t live forever in the shadow of the early 90’s FDIV bug, we need to move on. Our competition is moving much faster than we are” - I’m paraphrasing. Many of the engineers in the room could remember the FDIV bug and the ensuing problems caused for Intel 20 years prior. Many of us were aghast that someone highly placed would suggest we needed to cut corners in validation - that wasn’t explicitly said, of course, but that was the implicit message. That meeting there in late 2013 signaled a sea change at Intel to many of us who were there. And it didn’t seem like it was going to be a good kind of sea change. Some of us chose to get out while the getting was good. As someone who worked in an Intel Validation group for SOCs until mid-2014 or so I can tell you, yes, you will see more CPU bugs from Intel than you have in the past from the post-FDIV-bug era until recently.