nanog mailing list archives

Re: Potentially dangerous Pentium bug disc


From: Aaron Beck <krt () mpl net>
Date: Wed, 12 Nov 1997 13:56:25 -0800 (PST)

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@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 () mpl net
| Meridian Partners Limited. We Simply Do More. http://www.mpl.net 
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