Date: Mon, 10 Nov 1997 00:50:40 -0600 (CST) From: Jim Bryant <jbryant@unix.tfs.net> To: plm@xs4all.nl (Peter Mutsaers) Cc: freebsd-hackers@freebsd.org Subject: Re: Newest Pentium bug (fatal) Message-ID: <199711100650.AAA07487@argus.tfs.net> In-Reply-To: <87k9ehzpq4.fsf@muon.xs4all.nl> from Peter Mutsaers at "Nov 9, 97 11:06:59 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
In reply:
> CPU: Pentium (200.46-MHz 586-class CPU)
> Origin = "GenuineIntel" Id = 0x544 Stepping=4
> Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX>
>
> Also crashes.
>
> How do I get a replacement from Intel?
access to the press... we have to counter the paid ass-covering
robert collins is giving for intel in the press...
he is claiming to have another instruction sequence that he calls an
"invalid opcode" that can crash a pentium in a similar way, and is
apparently holding back and telling people not to "stir up the pot" in
another recent usenet posting...
research proves that the currently discussed bug is NOT an invalid
opcode as he claims but in fact is an infinitely useful documented
instruction.
LOCK CMPXCHG8B EDX:EAX, ECX:EBX ; crash... pp 25-72 to
; 25-73 of intel's arch & prog
; manual for the pentium
jim
--
All opinions expressed are mine, if you | "I will not be pushed, stamped,
think otherwise, then go jump into turbid | briefed, debriefed, indexed, or
radioactive waters and yell WAHOO !!! | numbered!" - #1, "The Prisoner"
------------------------------------------------------------------------------
Inet: jbryant@tfs.net AX.25: kc5vdj@wv0t.#neks.ks.usa.noam grid: EM28pw
voice: KC5VDJ - 6 & 2 Meters AM/FM/SSB, 70cm FM. http://www.tfs.net/~jbryant
------------------------------------------------------------------------------
HF/6M/2M: IC-706-MkII, 2M: HTX-212, 2M: HTX-202, 70cm: HTX-404, Packet: KPC-3+
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199711100650.AAA07487>