From owner-freebsd-hackers Fri Mar 13 06:22:50 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id GAA28273 for freebsd-hackers-outgoing; Fri, 13 Mar 1998 06:22:50 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from Kitten.mcs.com (Kitten.mcs.com [192.160.127.90]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id GAA28265 for ; Fri, 13 Mar 1998 06:22:47 -0800 (PST) (envelope-from karl@Mars.mcs.net) Received: from Mars.mcs.net (karl@Mars.mcs.net [192.160.127.85]) by Kitten.mcs.com (8.8.7/8.8.2) with ESMTP id IAA01176 for ; Fri, 13 Mar 1998 08:22:34 -0600 (CST) Received: (from karl@localhost) by Mars.mcs.net (8.8.7/8.8.2) id IAA11827; Fri, 13 Mar 1998 08:22:34 -0600 (CST) Message-ID: <19980313082234.32450@mcs.net> Date: Fri, 13 Mar 1998 08:22:34 -0600 From: Karl Denninger To: hackers@FreeBSD.ORG Subject: System hang (!) with -CURRENT Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.84 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I have seen an odd problem twice this morning. -CURRENT, current as of last night :-) dmesg is: Copyright (c) 1992-1998 FreeBSD Inc. Copyright (c) 1982, 1986, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. FreeBSD 3.0-CURRENT #1: Fri Mar 13 06:56:09 CST 1998 karl@Codebase.mcs.net:/usr/src/sys/compile/MCS_WEB Timecounter "i8254" frequency 1193182 Hz cost 3493 ns Timecounter "TSC" frequency 199432942 Hz cost 288 ns CPU: Pentium Pro (199.43-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x619 Stepping=9 Features=0xfbff real memory = 134217728 (131072K bytes) avail memory = 127594496 (124604K bytes) Probing for devices on PCI bus 0: Correcting Natoma config for non-SMP chip0: rev 0x02 on pci0.0.0 chip1: rev 0x01 on pci0.7.0 ide_pci0: rev 0x00 on pci0.7.1 de0: rev 0x22 int a irq 10 on pci0.10.0 de0: SMC 9332BDT 21140A [10-100Mb/s] pass 2.2 de0: address 00:e0:29:09:9b:05 de1: rev 0x22 int a irq 11 on pci0.11.0 de1: SMC 9332BDT 21140A [10-100Mb/s] pass 2.2 de1: address 00:e0:29:09:96:da ahc0: rev 0x00 int a irq 15 on pci0.12.0 ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs ahc0: waiting for scsi devices to settle scbus0 at ahc0 bus 0 ahc0: target 0 Tagged Queuing Device sd0 at scbus0 target 0 lun 0 sd0: type 0 fixed SCSI 2 sd0: Direct-Access 2170MB (4445380 512 byte sectors) sd0: with 5899 cyls, 5 heads, and an average 150 sectors/track vga0: rev 0x00 on pci0.14.0 Probing for devices on the ISA bus: sc0 at 0x60-0x6f irq 1 on motherboard sc0: VGA color <16 virtual consoles, flags=0x0> ed0 not found at 0x280 ed1 not found at 0x300 sio0 not found at 0x3f8 sio1 not found at 0x2f8 lpt0 not found lpt1 not found fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa fdc0: FIFO enabled, 8 bytes threshold fd0: 1.44MB 3.5in wdc0 not found at 0x1f0 aha0 not found at 0x330 aic0 not found at 0x340 npx0 on motherboard npx0: INT 16 interface ccd0-3: Concatenated disk drivers changing root device to sd0s2a WARNING: / was not properly dismounted. de0: enabling 10baseT port de1: enabling 10baseT port This machine is one five running the same kernel and same software base (in a fault-resistant environment). It has been running with a kernel circa March 11th without incident for more than two days. Twice now in the last three hours it has locked up hard. Keyboard input is not accepted (not even the NUM LOCK!) so dropping to DDB to find out where it is hanging up is impossible. Nothing else has changed at all. I suspect an external "packet of death". One of our other systems was hit with a sustained LAND attack attempt (which failed to kill it) minutes before the first lockup incident on this system. The commit logs say that the LAND attack vulnerability in -CURRENT was fixed in January. I don't know... this particular sequence of events, one out of five machines hit, and a different one on the same network hit (and logged) minutes before this one locks up? I'm suspicious. Is there anything outstanding in this area against -CURRENT? -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message