Potentially dangerous Pentium bug disc

Aaron Beck krt at mpl.net
Wed Nov 12 21:56:25 UTC 1997


On Wed, 12 Nov 1997, Jay R. Ashworth wrote:

> On Wed, Nov 12, 1997 at 09:24:00AM -0700, Randy Bush wrote:
> > can this 'discussion' please be moved to ms-dos-weenies or something?
> 
> Right on cue.  I _told_ someone you'd be first.
> 
> You may not run any networking gear that uses Pentium CPUs, but there
> are _many_ who do.  The message was posted to NODlist as well, anyone
> who's afraid of pissing Randy off, take it there.

not to get to off topic and such.. but it feels slightly approriate
to say that linux 2.1.63 already has a bug fix for the pent F0 0F bug..

got this from a friend who's running a 2.1.x kernel..

checking for F00F bug ...<6>
Intel Pentium/[MMX] F0 0F bug detected - turning on
workaround.
moving IDT ...  ... done
[root at dilithium /]# ./pentium_lockup 
Illegal instruction (core dumped)

apparently it traps the op codes before they go on to the cpu..



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| Aaron Beck, Internetworking Engineer. E: aaronb at mpl.net
| Meridian Partners Limited. We Simply Do More. http://www.mpl.net 
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