From owner-freebsd-bugs Wed Sep 11 12:30:05 1996 Return-Path: owner-bugs Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id MAA23650 for bugs-outgoing; Wed, 11 Sep 1996 12:30:05 -0700 (PDT) Received: (from gnats@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id MAA23643; Wed, 11 Sep 1996 12:30:03 -0700 (PDT) Resent-Date: Wed, 11 Sep 1996 12:30:03 -0700 (PDT) Resent-Message-Id: <199609111930.MAA23643@freefall.freebsd.org> Resent-From: gnats (GNATS Management) Resent-To: freebsd-bugs Resent-Reply-To: FreeBSD-gnats@freefall.FreeBSD.org, jdrobina@infinet.com Received: from drobina.my.domain (cmh-p092.infinet.com [206.103.242.98]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id MAA23397 for ; Wed, 11 Sep 1996 12:23:55 -0700 (PDT) Received: (from jdrobina@localhost) by drobina.my.domain (8.7.5/8.6.12) id PAA00692; Wed, 11 Sep 1996 15:24:03 -0400 (EDT) Message-Id: <199609111924.PAA00692@drobina.my.domain> Date: Wed, 11 Sep 1996 15:24:03 -0400 (EDT) From: jdrobina@infinet.com Reply-To: jdrobina@infinet.com To: FreeBSD-gnats-submit@freebsd.org X-Send-Pr-Version: 3.2 Subject: kern/1599: panic: locking against myself Sender: owner-bugs@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >Number: 1599 >Category: kern >Synopsis: panic: locking against myself >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Sep 11 12:30:02 PDT 1996 >Last-Modified: >Originator: James Drobina >Organization: None >Release: FreeBSD 2.2-CURRENT i386 >Environment: I have a 90MZ Pentium and a Buslogic 445s SCSI card. Here is the output ftom dmesg: FreeBSD 2.2-CURRENT #2: Wed Sep 11 06:32:55 EDT 1996 jdrobina@drobina.my.domain:/home/system/sys/compile/drobina Calibrating clock(s) relative to mc146818A clock... i586 clock: 90039523 Hz, i8254 clock: 1193273 Hz CPU: Pentium (90.03-MHz 586-class CPU) Origin = "GenuineIntel" Id = 0x524 Stepping=4 Features=0x1bf real memory = 50331648 (49152K bytes) avail memory = 46473216 (45384K bytes) Probing for devices on PCI bus 0: chip0 rev 1 on pci0:16 Probing for devices on the ISA bus: sc0 at 0x60-0x6f irq 1 on motherboard sc0: VGA color <16 virtual consoles, flags=0x0> sio0 at 0x3f8-0x3ff irq 4 on isa sio0: type 16550A sio1 at 0x2f8-0x2ff irq 3 on isa sio1: type 16550A sio2: disabled, not probed. sio3: disabled, not probed. lpt0 at 0x378-0x37f irq 7 on isa lpt0: Interrupt-driven port lp0: TCP/IP capable interface pca0 on motherboard pca0: PC speaker audio driver fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa fdc0: NEC 765 fd0: 1.44MB 3.5in fd1: 1.2MB 5.25in bt0: Bt445S/ 0-(32bit) bus bt0: Your card cannot DMA above 16MB boundary. Bounce buffering enabled. bt0: reading board settings, busmastering, int=12 bt0: version 3.37, fast sync, parity, 32 mbxs, 32 ccbs bt0: targ 0 sync rate=10.00MB/s(100ns), offset=15 bt0: targ 1 async bt0: targ 2 sync rate=10.00MB/s(100ns), offset=15 bt0: targ 3 sync rate=10.00MB/s(100ns), offset=08 bt0: Using Strict Round robin scheme bt0 at 0x330 irq 12 on isa bt0 waiting for scsi devices to settle (bt0:0:0): "MICROP 2217-15MQ1001901 HQ30" type 0 fixed SCSI 2 sd0(bt0:0:0): Direct-Access 1685MB (3450902 512 byte sectors) (bt0:1:0): "ARCHIVE VIPER 150 21247 -011" type 1 removable SCSI 1 st0(bt0:1:0): Sequential-Access density code 0x0, drive empty (bt0:2:0): "IBM DORS-32160 S82C" type 0 fixed SCSI 2 sd1(bt0:2:0): Direct-Access 2063MB (4226725 512 byte sectors) (bt0:3:0): "TEAC CD-ROM CD-56S 1.0A" type 5 removable SCSI 2 cd0(bt0:3:0): CD-ROM cd present [326402 x 2048 byte records] npx0 on motherboard npx0: INT 16 interface pas0 at 0x388 irq 5 drq 3 on isa pas0: >Description: My system would reboot while I was grepping some source code on cdrom. I could't find and error messages anywhere. I re-ran what I thought would trigger the problem from the console. These messages were printed on the console: panic: locking against myself syncing disks... >How-To-Repeat: (After system reboot.) 1. login. 2. mount /cdrom 3. cd /cdrom/usr/include 4. fgrep xx *.h The error is repeatable. I was able to repeat it three times. My system seemed to panic at the same place each time. (The cdrom was the FreeBSD 2.1 live file system.) >Fix: Unknown >Audit-Trail: >Unformatted: