1997-11-09 - Re: WARNING: Serious Pentium Bug

Header Data

From: Anonymous <nobody@REPLAY.COM>
To: cypherpunks@Algebra.COM
Message Hash: b66961195b83f0233eeefafd40855b60fe31ef10ed11157c179a30e5461b0368
Message ID: <199711091855.TAA23477@basement.replay.com>
Reply To: N/A
UTC Datetime: 1997-11-09 19:00:37 UTC
Raw Date: Mon, 10 Nov 1997 03:00:37 +0800

Raw message

From: Anonymous <nobody@REPLAY.COM>
Date: Mon, 10 Nov 1997 03:00:37 +0800
To: cypherpunks@Algebra.COM
Subject: Re: WARNING: Serious Pentium Bug
Message-ID: <199711091855.TAA23477@basement.replay.com>
MIME-Version: 1.0
Content-Type: text/plain



>Anonymous <anon@anon.efga.org> wrote:
>>There is a SERIOUS bug in all pentium CPUs. The following
>>code will crash any machine running on a pentium CPU, MMX or no
>>MMX, any speed, regardless of OS (crash as in instant seize, hard
>>reboot the only cure):
>>
>>char x [5] = { 0xf0, 0x0f, 0xc7, 0xc8 };
>>
>>main ()
>>{
>>       void (*f)() = x;
>>       f();
>>}
>>
>>This require no special permissions to run, it works fine with
>>average-joe-userspace permissions. I have verified this, it works.
>>Demand a new CPU from Intel.
>
>This didn't crash my Pentium.  Hoax?

Absolutely not. It crashed mine and is a major bug. It doesn't seem to
affect the PPro, though, and not the P2 due to its relation to the PPro. It
might be fixed in later Pentiums, which begs the question of why Intel
didn't issue a recall back then. Supposidly they were informed about it
months ago.

Read comp.sys.intel.






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