Re: Panic: ffs_umount

On Thu, 4 Mar 2004, Hywel Mallett wrote:

> Hi all,
> I got a panic while trying to umount a floppy
> I'm not a developer, but I followed the instructions in the developers
> handbook, so I've got a backtrace and a dmesg attached.

Did you remove the floppy before unmounting it? That is a known panic
trigger.

> The last security log before the crash had the following line:
> > fd0: hard error cmd=read fsbn 62 of 56-63 (ST0 44<abnrml,top_head> ST1
> 20<bad_crc> ST2 20<bad_crc> cyl 1 hd 1 sec 9)

Yeah, UFS is known to flip out in strange ways if the underlying storage
goes away.

> #0  doadump () at /usr/src/sys/kern/kern_shutdown.c:240
> #1  0xc04c3b99 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:372
> #2  0xc04c3f78 in panic () at /usr/src/sys/kern/kern_shutdown.c:550
> #3  0xc0646db6 in trap_fatal (frame=0xd1f24c08, eva=0) at
> /usr/src/sys/i386/i386/trap.c:821
> #4  0xc0646a52 in trap_pfault (frame=0xd1f24c08, usermode=0, eva=108) at
> /usr/src/sys/i386/i386/trap.c:735
> #5  0xc06465ad in trap (frame=
>       {tf_fs = 24, tf_es = 16, tf_ds = 16, tf_edi = -1009713920, tf_esi
> = -999817216, tf_ebp = -772649844, tf_isp = -772649932, tf_ebx = 0, tf_edx =
> 4, tf_ecx = -1066665592, tf_eax = 0, tf_trapno = 12, tf_err = 2, tf_eip
> = -1067565955, tf_cs = 8, tf_eflags = 66118, tf_esp = -1009713920, tf_ss =
> 1}) at /usr/src/sys/i386/i386/trap.c:420
> #6  0xc06377b8 in calltrap () at {standard input}:94
> #7  0xc051e644 in dounmount (mp=0xc30fbc00, flags=-999817216, td=0xc3d0fd00)
> at /usr/src/sys/kern/vfs_mount.c:1144
> #8  0xc051e3cb in unmount (td=0xc4645500, uap=0xd1f24d14) at
> /usr/src/sys/kern/vfs_mount.c:1083
> #9  0xc0647140 in syscall (frame=
>       {tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 134523407, tf_esi =
> 134536705, tf_ebp = -1077942936, tf_isp = -772649612, tf_ebx = -1077943024,
> tf_edx = 25, tf_ecx = 0, tf_eax = 22, tf_trapno = 12, tf_err = 2, tf_eip =
> 671874959, tf_cs = 31, tf_eflags = 518, tf_esp = -1077943124, tf_ss = 47})
> at /usr/src/sys/i386/i386/trap.c:1010
> #10 0xc063780d in Xint0x80_syscall () at {standard input}:136
> ---Can't read userspace from dump, or kernel process---
>
> (kgdb) quit
>
>
> server# dmesg
> Copyright (c) 1992-2004 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>  The Regents of the University of California. All rights reserved.
> FreeBSD 5.2.1-RELEASE #0: Wed Feb 25 01:05:40 GMT 2004
>     hywel_at_server.hmallett.co.uk:/usr/obj/usr/src/sys/server
> Preloaded elf kernel "/boot/kernel/kernel" at 0xc07b0000.
> Preloaded elf module "/boot/kernel/acpi.ko" at 0xc07b01f4.
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Pentium II/Pentium II Xeon/Celeron (267.27-MHz 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0x652  Stepping = 2
>
> Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,
> PAT,PSE36,MMX,FXSR>
> real memory  = 335478784 (319 MB)
> avail memory = 320430080 (305 MB)
> Pentium Pro MTRR support enabled
> npx0: [FAST]
> npx0: <math processor> on motherboard
> npx0: INT 16 interface
> acpi0: <QDIGRP AWRDACPI> on motherboard
> pcibios: BIOS version 2.10
> Using $PIR table, 6 entries at 0xc00fdb90
> acpi0: Power Button (fixed)
> Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
> acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
> acpi_cpu0: <CPU> on acpi0
> pcib0: <ACPI Host-PCI bridge> port 0x5000-0x500f,0x4000-0x4041,0xcf8-0xcff
> on acpi0
> pci0: <ACPI PCI bus> on pcib0
> pcib0: slot 7 INTD is routed to irq 11
> pcib0: slot 10 INTA is routed to irq 10
> agp0: <Intel 82443LX (440 LX) host to PCI bridge> mem 0xe4000000-0xe43fffff
> at device 0.0 on pci0
> pcib1: <PCI-PCI bridge> at device 1.0 on pci0
> pci1: <PCI bus> on pcib1
> isab0: <PCI-ISA bridge> at device 7.0 on pci0
> isa0: <ISA bus> on isab0
> atapci0: <Intel PIIX4 UDMA33 controller> port 0xf000-0xf00f at device 7.1 on
> pci0
> ata0: at 0x1f0 irq 14 on atapci0
> ata0: [MPSAFE]
> ata1: at 0x170 irq 15 on atapci0
> ata1: [MPSAFE]
> uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xe000-0xe01f irq 11
> at device 7.2 on pci0
> usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
> usb0: USB revision 1.0
> uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub0: 2 ports with 2 removable, self powered
> pci0: <bridge, PCI-unknown> at device 7.3 (no driver attached)
> xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xe400-0xe47f mem
> 0xe4401000-0xe440107f irq 10 at device 10.0 on pci0
> xl0: Ethernet address: 00:01:02:e3:3b:d0
> miibus0: <MII bus> on xl0
> ukphy0: <Generic IEEE 802.3u media interface> on miibus0
> ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> pci0: <display, VGA> at device 12.0 (no driver attached)
> fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port
> 0x3f7,0x3f2-0x3f5 irq 6 drq 2 on acpi0
> fdc0: FIFO enabled, 8 bytes threshold
> fd0: <1440-KB 3.5" drive> on fdc0 drive 0
> atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
> atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
> kbd0 at atkbd0
> orm0: <Option ROM> at iomem 0xc0000-0xc7fff on isa0
> pmtimer0 on isa0
> sc0: <System console> on isa0
> sc0: VGA <16 virtual consoles, flags=0x200>
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> sio0: configured irq 4 not in bitmap of probed irqs 0
> sio0: port may not be enabled
> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
> sio0: type 8250 or not responding
> sio1: configured irq 3 not in bitmap of probed irqs 0
> sio1: port may not be enabled
> Timecounter "TSC" frequency 267274051 Hz quality 800
> Timecounters tick every 10.000 msec
> acpi_cpu: throttling enabled, 8 steps (100% to 12.5%), currently 100.0%
> GEOM: create disk ad0 dp=0xc30bc960
> ad0: 8693MB <IBM-DJNA-370910> [17662/16/63] at ata0-master UDMA33
> GEOM: create disk ad1 dp=0xc30bc860
> ad1: 190782MB <WDC WD2000JB-00EVA0> [387621/16/63] at ata0-slave UDMA33
> GEOM: create disk ad2 dp=0xc30bc260
> ad2: 117800MB <IC35L120AVV207-0> [239340/16/63] at ata1-master UDMA33
> Mounting root from ufs:/dev/ad0s1a
> WARNING: / was not properly dismounted
> WARNING: /tmp was not properly dismounted
> WARNING: /usr was not properly dismounted
> WARNING: /var was not properly dismounted
> WARNING: /usr/home was not properly dismounted
> Accounting enabled
>
>
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-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite_at_gumbysoft.com          |  www.FreeBSD.org