Design flaw in intel processors...

Off topic discussion zone.

Moderators: winston, another_commander, Cody

Post Reply
User avatar
Cody
Sharp Shooter Spam Assassin
Sharp Shooter Spam Assassin
Posts: 13678
Joined: Sat Jul 04, 2009 9:31 pm
Location: Corke's Drift
Contact:

Design flaw in intel processors...

Post by Cody » Wed Jan 03, 2018 7:10 pm

... and the upcoming OS fixes may slow your machine down. Article (at El Reg) here.

Naughty intel... very naughty!

User avatar
phkb
Commodore
Commodore
Posts: 2433
Joined: Tue Jan 21, 2014 10:37 pm
Location: [p]laying [h]ard and [k]icking [b]utt somewhere in G7...

Re: Design flaw in intel processors...

Post by phkb » Thu Jan 04, 2018 2:51 am

Oh, joy. Can’t wait to explain to my CEO why all the computers are running slow.

User avatar
spud42
---- E L I T E ----
---- E L I T E ----
Posts: 1219
Joined: Wed Mar 26, 2014 10:11 am
Location: Brisbane,Australia

Re: Design flaw in intel processors...

Post by spud42 » Thu Jan 04, 2018 11:49 am

yeah read that last night on another forum.... oops!!

but not really... it affects intel processors from the last 10 years! so flaw has been around for a while .

allowing speculative reads into protected kernal space without checking permissions? big oops...
Arthur: OK. Leave this to me. I'm British. I know how to queue.
OR i could go with
Arthur Dent: I always said there was something fundamentally wrong with the universe.
or simply
42

User avatar
Cody
Sharp Shooter Spam Assassin
Sharp Shooter Spam Assassin
Posts: 13678
Joined: Sat Jul 04, 2009 9:31 pm
Location: Corke's Drift
Contact:

Re: Design flaw in intel processors...

Post by Cody » Thu Jan 04, 2018 1:02 pm

Apparently, Meltdown is the intel-specific CPU flaw - but Spectre has raised its ugly head too:
Spectre potentially has a wider reach. It affects some chips in smartphones, tablets and computers powered by Intel, ARM and AMD.
It is thought to be much harder to patch and no fix for it has yet been made widely available.
Is Ernst Stavro at it again?

User avatar
Getafix
Quite Grand Sub-Admiral
Quite Grand Sub-Admiral
Posts: 960
Joined: Tue Apr 01, 2008 12:55 pm
Location: A small ice asteroid, orbiting Oresrati in Galaxy 8 (a.k.a. northwest Armorica).
Contact:

Re: Design flaw in intel processors...

Post by Getafix » Thu Jan 04, 2018 2:53 pm

Thanks for sharing, Cody. 8)
"Any sufficiently advanced information is indistinguishable from noise." [Newman, Lachmann, Moore]

Astrobe
---- E L I T E ----
---- E L I T E ----
Posts: 596
Joined: Sun Jul 21, 2013 12:26 pm

Re: Design flaw in intel processors...

Post by Astrobe » Thu Jan 04, 2018 5:40 pm

spud42 wrote:
Thu Jan 04, 2018 11:49 am
yeah read that last night on another forum.... oops!!

but not really... it affects intel processors from the last 10 years! so flaw has been around for a while .

allowing speculative reads into protected kernal space without checking permissions? big oops...
Nope. Specter and/or Meltdown also affect AMD and ARM (i.e. your phone).

The real joke is: "It affects cloud providers mainly because they run untrusted code; I, as a desktop user, am not affected as long as I am careful on the Internet".

Then Javascript says hello.

That's code (it is compiled to machine code because of JIT) which is so NOT trusted that more and more people disable it via adblockers. Well if Javascript (that is, the Javascript abuse that has infected the Web) could take some collateral damage from this, that would be a good thing. Maybe I won't be one of those lunatics who disable Javascript by default anymore.

That said, from what I've read Specter has been known for a long time... Because it cannot be fixed by software means. So there might be some over-reaction there.

User avatar
spud42
---- E L I T E ----
---- E L I T E ----
Posts: 1219
Joined: Wed Mar 26, 2014 10:11 am
Location: Brisbane,Australia

Re: Design flaw in intel processors...

Post by spud42 » Fri Jan 05, 2018 3:11 pm

what cody said... meltdown is intel cpu specific and spectre affects all.
Arthur: OK. Leave this to me. I'm British. I know how to queue.
OR i could go with
Arthur Dent: I always said there was something fundamentally wrong with the universe.
or simply
42

UK_Eliter
---- E L I T E ----
---- E L I T E ----
Posts: 1103
Joined: Sat Sep 12, 2009 11:58 pm
Location: Essex (mainly industrial and occasionally anarchic)

Re: Design flaw in intel processors...

Post by UK_Eliter » Sun Jan 07, 2018 2:39 am

Yes, it's grim. That said: I've installed patches from the Linux kernel and from Windows (Windows 8) and the speed slow-down is that bad. Indeed, I'm unsure I've noticed one in Linux, though I do seem to have noticed one in Windows. I imagine that this vulnerability will slow down the Internet - at least unless or until companies upgrade their servers or buy more of them.

I'll be buying AMD in future. If I can wean myself off second-hand ex-business Dell computers . .

User avatar
Cody
Sharp Shooter Spam Assassin
Sharp Shooter Spam Assassin
Posts: 13678
Joined: Sat Jul 04, 2009 9:31 pm
Location: Corke's Drift
Contact:

Re: Design flaw in intel processors...

Post by Cody » Tue Jan 23, 2018 1:36 am

The ever-affable Linus Torvalds ain't too happy with intel's approach... article here.

UK_Eliter
---- E L I T E ----
---- E L I T E ----
Posts: 1103
Joined: Sat Sep 12, 2009 11:58 pm
Location: Essex (mainly industrial and occasionally anarchic)

Re: Design flaw in intel processors...

Post by UK_Eliter » Tue Jan 23, 2018 1:41 am

Cody wrote:
Tue Jan 23, 2018 1:36 am
The ever-affable Linus Torvalds ain't too happy with intel's approach... article here.
Yes, I heard about that. The following claim - about Linus - seems plausible, though. He's affable most of the time; it's just that when he's not, it gets publicised. Affable Linus ain't news.

EDIT: But, actually, I quite like it that someone can get away with talking to huge, at-the-least-fairly-far-from-perfect corporations, in that manner.

Post Reply