From owner-freebsd-bugs Fri Oct 9 11:50:07 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA24359 for freebsd-bugs-outgoing; Fri, 9 Oct 1998 11:50:07 -0700 (PDT) (envelope-from owner-freebsd-bugs@FreeBSD.ORG) Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.21]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA24340 for ; Fri, 9 Oct 1998 11:50:03 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.8.8/8.8.5) id LAA26990; Fri, 9 Oct 1998 11:50:02 -0700 (PDT) Received: (from nobody@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA23002; Fri, 9 Oct 1998 11:41:24 -0700 (PDT) (envelope-from nobody) Message-Id: <199810091841.LAA23002@hub.freebsd.org> Date: Fri, 9 Oct 1998 11:41:24 -0700 (PDT) From: ben@rosengart.com To: freebsd-gnats-submit@FreeBSD.ORG X-Send-Pr-Version: www-1.0 Subject: kern/8235: kernel refuses to dump core Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >Number: 8235 >Category: kern >Synopsis: kernel refuses to dump core >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Oct 9 11:50:01 PDT 1998 >Last-Modified: >Originator: Ben Rosengart >Organization: Icon CMT Corp. >Release: 3.0-beta >Environment: FreeBSD narcissus.net 3.0-BETA FreeBSD 3.0-BETA #0: Tue Oct 6 00:07:56 EDT 1998 root@narcissus.net:/usr/src/sys/compile/DSUEVEN i386 >Description: At DES' suggestion, I compiled up a DDB kernel, booted the system with it, dropped to the debugger, and called panic. The result: syncing disks... Fatal trap 12: page fault while in kernel mode fault virtual address = 0x30 fault code = supervisor read, page not present instruction pointer = 0x8:0xf017af00 stack pointer = 0x10:0xf01d1cdc frame pointer = 0x10:0xf01d1ce0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = Idle interrupt mask = tty bio kernel: type 12 trap, code=0 Stopped at _Debugger+0x35: movb $0,_in_Debugger.98 When I called panic again, the system printed a "dumping" message, but simply hung, and eventually printed an I/O error message and offered to reboot. Since the output of nm /kernel | sort is about 175K, rather than spam the list with it, I put it at http://www.interport.net/~float/nm.out. Here is my dmesg.boot: 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-BETA #0: Tue Oct 6 00:07:56 EDT 1998 root@narcissus.net:/usr/src/sys/compile/DSUEVEN Timecounter "i8254" frequency 1193182 Hz cost 3499 ns Timecounter "TSC" frequency 199433076 Hz cost 252 ns CPU: Pentium Pro (199.43-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x617 Stepping=7 Features=0xf9ff real memory = 100663296 (98304K bytes) avail memory = 95535104 (93296K bytes) Probing for devices on PCI bus 0: chip0: rev 0x02 on pci0.0.0 chip1: rev 0x01 on pci0.7.0 vga0: rev 0x06 int a irq 11 on pci0.11.0 bt0: rev 0x08 int a irq 9 on pci0.15.0 bt0: BT-948 FW Rev. 5.05R Ultra Narrow SCSI Host Adapter, SCSI ID 7, 192 CCBs Probing for devices on the ISA bus: sc0 at 0x60-0x6f irq 1 on motherboard sc0: VGA color <16 virtual consoles, flags=0x0> ed0 at 0x300-0x31f irq 10 on isa ed0: address 00:40:05:1e:df:32, type NE2000 (16 bit) sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa sio0: type 16550A sio1 at 0x2f8-0x2ff irq 3 on isa sio1: type 16550A lpt0 at 0x378-0x37f irq 7 on isa lpt0: Interrupt-driven port lp0: TCP/IP capable interface pcm0 at 0x220 irq 5 drq 1 on isa WARNING: sb: misconfigured secondary DMA channel fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa fdc0: FIFO enabled, 8 bytes threshold fd0: 1.44MB 3.5in bt: unit number (1) too high bt1 not found npx0 on motherboard npx0: INT 16 interface changing root device to da0s1a da0 at bt0 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI2 device da0: 3.300MB/s transfers, Tagged Queueing Enabled da0: 2048MB (4194304 512 byte sectors: 255H 63S/T 261C) da1 at bt0 bus 0 target 6 lun 0 da1: Fixed Direct Access SCSI2 device da1: 3.300MB/s transfers, Tagged Queueing Enabled da1: 3067MB (6281856 512 byte sectors: 255H 63S/T 391C) WARNING: / was not properly dismounted cd0 at bt0 bus 0 target 2 lun 0 cd0: Removable CD-ROM SCSI2 device cd0: 3.300MB/s transfers cd0: cd present [193127 x 2048 byte records] ffs_mountfs: superblock updated ffs_mountfs: superblock updated >How-To-Repeat: Boot with DDB, drop to debugger, call panic. As far as I can tell, no one else is experiencing this problem. >Fix: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message