Date: Mon, 10 Mar 2003 09:51:42 -0800 (PST) From: Martin Machacek <m@m3a.net> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/49079: panic: bwrite: buffer is not busy Message-ID: <20030310175142.B2BAB431A@pivo.mm.lab>
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>Number: 49079
>Category: kern
>Synopsis: panic: bwrite: buffer is not busy
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Mar 10 10:00:24 PST 2003
>Closed-Date:
>Last-Modified:
>Originator: Martin Machacek
>Release: FreeBSD 5.0-RELEASE i386
>Organization:
>Environment:
System: FreeBSD pivo.mm.lab 5.0-RELEASE FreeBSD 5.0-RELEASE #0: Fri Mar 7 09:15:41 PST 2003 root@pivo.mm.lab:/usr/src/sys/i386/compile/PIVO i386
>Description:
The system panics with "panic: bwrite: buffer is not busy" after random time
after boot if X server is running (although this is not verified to be
necessary) and there is lot of disk activity. It has repeatedly happend during
daily periodic check (I'm using xdm, so X server is running all the time).
Note: I had to use "DISABLE_PSE" and "DISABLE_PG_G" to prevent applications
being killed by SIGILL on this machine. Stack backtrace taken from latest
crashdump follows:
mm@pivo:/var/crash# gdb -k -c vmcore.1 /sys/i386/compile/PIVO/kernel.debug
GNU gdb 5.2.1 (FreeBSD)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-undermydesk-freebsd"...
panic: bwrite: buffer is not busy???
panic messages:
---
panic: ufs_dirbad: bad dir
syncing disks, buffers remaining... panic: bwrite: buffer is not busy???
Uptime: 2d23h32m45s
Dumping 511 MB
ata0: resetting devices ..
done
16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 352 368 384 400 416 432 448 464 480 496
---
#0 doadump () at ../../../kern/kern_shutdown.c:232
232 dumping++;
(kgdb) bt
#0 doadump () at ../../../kern/kern_shutdown.c:232
#1 0xc0237e60 in boot (howto=260) at ../../../kern/kern_shutdown.c:364
#2 0xc023806d in poweroff_wait (junk=0xc03d27e3, howto=-834382628)
at ../../../kern/kern_shutdown.c:517
#3 0xc0273237 in bwrite (bp=0x104) at ../../../kern/vfs_bio.c:796
#4 0xc027470c in vfs_bio_awrite (bp=0xce445430)
at ../../../kern/vfs_bio.c:1643
#5 0xc0343872 in ffs_fsync (ap=0xe0b45860) at ../../../ufs/ffs/ffs_vnops.c:258
#6 0xc0342aff in ffs_sync (mp=0xc3dff800, waitfor=2, cred=0xc1293e80,
td=0xc0424200) at vnode_if.h:612
#7 0xc0285669 in sync (td=0xc0424200, uap=0x0)
at ../../../kern/vfs_syscalls.c:138
#8 0xc0237acc in boot (howto=256) at ../../../kern/kern_shutdown.c:273
#9 0xc023806d in poweroff_wait (junk=0xc03df15d, howto=-1007009616)
at ../../../kern/kern_shutdown.c:517
#10 0xc034a499 in ufs_dirbad (ip=0x0, offset=0, how=0x0)
at ../../../ufs/ufs/ufs_lookup.c:631
#11 0xc03499eb in ufs_lookup (ap=0xe0b45ac0)
at ../../../ufs/ufs/ufs_lookup.c:294
#12 0xc0350cba in ufs_vnoperate (ap=0x0) at ../../../ufs/ufs/ufs_vnops.c:2796
#13 0xc0277e23 in vfs_cache_lookup (ap=0x0) at vnode_if.h:82
#14 0xc0350cba in ufs_vnoperate (ap=0x0) at ../../../ufs/ufs/ufs_vnops.c:2796
#15 0xc027bebe in lookup (ndp=0xe0b45c28) at vnode_if.h:52
#16 0xc027b8d7 in namei (ndp=0xe0b45c28) at ../../../kern/vfs_lookup.c:181
#17 0xc02880ba in lstat (td=0xc40b38c0, uap=0xe0b45d14)
at ../../../kern/vfs_syscalls.c:1699
#18 0xc0393807 in syscall (frame=
{tf_fs = 134938671, tf_es = 134873135, tf_ds = 136052783, tf_edi = 135978656, tf_esi = 134876304, tf_ebp = 135977844, tf_isp = -525050508, tf_ebx = 136346664, tf_edx = 0, tf_ecx = 0, tf_eax = 190, tf_trapno = 22, tf_err = 2, tf_eip = 672664659, tf_cs = 31, tf_eflags = 582, tf_esp = 135977708, tf_ss = 47})
at ../../../i386/i386/trap.c:1033
#19 0xc03849fd in Xint0x80_syscall () at {standard input}:140
---Can't read userspace from dump, or kernel process---
dmesg:
mm@pivo:/var/crash# cat /var/run/dmesg.boot
Copyright (c) 1992-2003 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 5.0-RELEASE #0: Fri Mar 7 09:15:41 PST 2003
root@pivo.mm.lab:/usr/src/sys/i386/compile/PIVO
Preloaded elf kernel "/boot/kernel/kernel" at 0xc0565000.
Preloaded elf module "/boot/kernel/acpi.ko" at 0xc05650a8.
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 1793363468 Hz
CPU: Pentium 4 (1793.36-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf24 Stepping = 4
Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM>
real memory = 536285184 (511 MB)
avail memory = 515149824 (491 MB)
Initializing GEOMetry subsystem
Pentium Pro MTRR support enabled
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <DELL GX260 > on motherboard
ACPI-0625: *** Info: GPE Block0 defined as GPE0 to GPE31
Using $PIR table, 9 entries at 0xc00feae0
acpi0: power button is handled as a fixed feature programming model.
Timecounter "ACPI-fast" frequency 3579545 Hz
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
acpi_cpu0: <CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel Generic host to PCI bridge> mem 0xe8000000-0xefffffff at device 0.0 on pci0
pcib1: <PCIBIOS PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
drm0: <ATI Radeon QY VE (AGP)> port 0xec00-0xecff mem 0xff8f0000-0xff8fffff,0xf0000000-0xf7ffffff irq 11 at device 0.0 on pci1
info: [drm] AGP at 0xe8000000 128MB
info: [drm] Initialized radeon 1.1.1 20010405 on minor 0
uhci0: <Intel 82801DB (ICH4) USB controller USB-A> port 0xff80-0xff9f irq 11 at device 29.0 on pci0
usb0: <Intel 82801DB (ICH4) USB controller USB-A> 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
ums0: Logitech USB Optical Mouse, rev 1.10/21.10, addr 2, iclass 3/1
ums0: 3 buttons and Z dir.
uhci1: <Intel 82801DB (ICH4) USB controller USB-B> port 0xff60-0xff7f irq 10 at device 29.1 on pci0
usb1: <Intel 82801DB (ICH4) USB controller USB-B> on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2: <Intel 82801DB (ICH4) USB controller USB-C> port 0xff40-0xff5f irq 9 at device 29.2 on pci0
usb2: <Intel 82801DB (ICH4) USB controller USB-C> on uhci2
usb2: USB revision 1.0
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
pci0: <serial bus, USB> at device 29.7 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci2: <ACPI PCI bus> on pcib2
xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xdc80-0xdcff mem 0xff6ffc00-0xff6ffc7f irq 9 at device 9.0 on pci2
xl0: Ethernet address: 00:01:02:2e:46:78
miibus0: <MII bus> on xl0
xlphy0: <3c905C 10/100 internal PHY> on miibus0
xlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
em0: <Intel(R) PRO/1000 Network Connection, Version - 1.4.7> port 0xdc40-0xdc7f mem 0xff6c0000-0xff6dffff irq 9 at device 12.0 on pci2
em0: Speed:100 Mbps Duplex:Full
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH4 ATA100 controller> port 0xffa0-0xffaf,0-0x3,0-0x7,0-0x3,0-0x7 at device 31.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
pcm0: <Intel 82801DB (ICH4)> port 0xcc40-0xcc7f,0xc800-0xc8ff mem 0xffa20000-0xffa200ff,0xffa20400-0xffa205ff irq 11 at device 31.5 on pci0
speaker0 port 0x61 on acpi0
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port 0x3f7,0x3f0-0x3f5 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
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A
orm0: <Option ROMs> at iomem 0xcb800-0xcbfff,0xcb000-0xcb7ff,0xc0000-0xcafff on isa0
pmtimer0 on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounters tick every 10.000 msec
ad0: 19595MB <MAXTOR 6L020J1> [39813/16/63] at ata0-master UDMA100
acd0: CDROM <SAMSUNG CD-ROM SC-148C> at ata1-master PIO4
Mounting root from ufs:/dev/ad0s3a
WARNING: / was not properly dismounted
WARNING: /usr was not properly dismounted
/usr: mount pending error: blocks 12 files 3
/usr: superblock summary recomputed
kernel config:
machine i386
cpu I686_CPU
ident PIVO
maxusers 0
makeoptions DEBUG=-g
options INET #InterNETworking
options INET6 #IPv6 communications protocols
options FFS #Berkeley Fast Filesystem
options SOFTUPDATES #Enable FFS soft updates support
options UFS_ACL #Support for access control lists
options UFS_DIRHASH #Improve performance on big directories
options MD_ROOT #MD is a potential root device
options NFSCLIENT #Network Filesystem Client
options NFSSERVER #Network Filesystem Server
options NFS_ROOT #NFS usable as root device, requires NFSCLIENT
options MSDOSFS #MSDOS Filesystem
options CD9660 #ISO 9660 Filesystem
options PROCFS #Process filesystem (requires PSEUDOFS)
options PSEUDOFS #Pseudo-filesystem framework
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4 #Compatible with FreeBSD4
options KTRACE #ktrace(1) support
options SYSVSHM #SYSV-style shared memory
options SYSVMSG #SYSV-style message queues
options SYSVSEM #SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options DISABLE_PSE
options DISABLE_PG_G
# Debugging for use in -current
options DDB #Enable the kernel debugger
#options INVARIANTS #Enable calls of extra sanity checking
options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS
#options WITNESS #Enable checks to detect deadlocks and cycles
#options WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed
device isa
device pci
# Floppy drives
device fdc
# ATA and ATAPI devices
device ata
device atadisk # ATA disk drives
device atapicd # ATAPI CDROM drives
device atapifd # ATAPI floppy drives
device atapist # ATAPI tape drives
options ATA_STATIC_ID #Static device numbering
# SCSI peripherals
device scbus # SCSI bus (required)
device ch # SCSI media changers
device da # Direct Access (disks)
device sa # Sequential Access (tape etc)
device cd # CD
device pass # Passthrough device (direct SCSI access)
device ses # SCSI Environmental Services (and SAF-TE)
# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc # AT keyboard controller
device atkbd # AT keyboard
device psm # PS/2 mouse
device vga # VGA video card driver
device sc
device agp # support several AGP chipsets
device npx
device radeondrm
# Power management support (see NOTES for more options)
#device apm
# Add suspend/resume support for the i8254.
device pmtimer
# Serial (COM) ports
device sio # 8250, 16[45]50 based serial ports
device pcm
# PCI Ethernet NICs.
device de # DEC/Intel DC21x4x (``Tulip'')
device em # Intel PRO/1000 adapter Gigabit Ethernet Card
device txp # 3Com 3cR990 (``Typhoon'')
device vx # 3Com 3c590, 3c595 (``Vortex'')
# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device miibus # MII bus support
device dc # DEC/Intel 21143 and various workalikes
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device pcn # AMD Am79C97x PCI 10/100 (precedence over 'lnc')
device rl # RealTek 8129/8139
device sf # Adaptec AIC-6915 (``Starfire'')
device sis # Silicon Integrated Systems SiS 900/SiS 7016
device ste # Sundance ST201 (D-Link DFE-550TX)
device tl # Texas Instruments ThunderLAN
device tx # SMC EtherPower II (83c170 ``EPIC'')
device vr # VIA Rhine, Rhine II
device wb # Winbond W89C840F
device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
device bge # Broadcom BCM570xx Gigabit Ethernet
# Pseudo devices - the number indicates how many units to allocate.
device random # Entropy device
device loop # Network loopback
device ether # Ethernet support
device tun # Packet tunnel.
device pty # Pseudo-ttys (telnet etc)
device md # Memory "disks"
device gif # IPv6 and IPv4 tunneling
device faith # IPv6-to-IPv4 relaying (translation)
device bpf # Berkeley packet filter
device speaker
# USB support
device uhci # UHCI PCI->USB interface
device ohci # OHCI PCI->USB interface
device usb # USB Bus (required)
device ugen # Generic
device uhid # "Human Interface Devices"
device ukbd # Keyboard
device ulpt # Printer
device umass # Disks/Mass storage - Requires scbus and da
device ums # Mouse
device urio # Diamond Rio 500 MP3 player
device uscanner # Scanners
# USB Ethernet, requires mii
device aue # ADMtek USB ethernet
device cue # CATC USB ethernet
device kue # Kawasaki LSI USB ethernet
The kernel was compiled with following options in /etc/make.conf:
# -- use.perl generated deltas -- #
# Created: Wed Feb 12 18:58:20 2003
# Setting to use base perl from ports:
CPUTYPE=p4
PERL_VER=5.6.1
PERL_VERSION=5.6.1
PERL_ARCH=mach
NOPERL=yo
NO_PERL=yo
NO_PERL_WRAPPER=yo
SUP_UPDATE=yo
KERNCONF=PIVO GENERIC
NO_BIND=yo
NO_SENDMAIL=yo
XFree version:
XFree86 Version 4.2.1 / X Window System
(protocol Version 11, revision 0, vendor release 6600)
Release Date: 3 September 2002
If the server is older than 6-12 months, or if your card is
newer than the above date, look for a newer version before
reporting problems. (See http://www.XFree86.Org/)
Build Operating System: FreeBSD 5.0-RC i386 [ELF]
Module Loader present
XF86Config:
Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
ModulePath "/usr/X11R6/lib/modules"
FontPath "/usr/X11R6/lib/X11/fonts/TTF/"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection
Section "Module"
Load "dbe"
Load "dri"
Load "extmod"
Load "glx"
Load "pex5"
Load "record"
Load "xie"
Load "xtrap"
Load "speedo"
Load "type1"
Load "freetype"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "XkbModel" "pc104"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/sysmouse"
Option "Buttons" "5"
Option "ZAxisMapping" "4 5"
EndSection
Section "Monitor"
#DisplaySize 400 300 # mm
Identifier "Monitor0"
VendorName "VSC"
ModelName "G810-3"
HorizSync 30-97
VertRefresh 50-180
Option "DPMS"
EndSection
Section "Device"
Identifier "Card0"
Driver "ati"
VendorName "ATI"
BoardName "Radeon VE QY"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 16
Modes "1280x1024"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024"
EndSubSection
EndSection
>How-To-Repeat:
Run 5.0-RELEASE Kernel and XFree86 Version 4.2.1 X server, induce lot of disk
activity (such as deep find, filesystem dump, etc. ..). The problem is not
deterministically repeatable but occurs pretty frequently (once an hour - once in 3 days).
>Fix:
Would love to have one :-).
>Release-Note:
>Audit-Trail:
>Unformatted:
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