Date: Sat, 17 May 2003 02:21:01 +0200 From: Stacy Olivas <olivas@digiflux.org> To: hackers@freebsd.org Subject: MFS and Kernel panics (5.0-RELEASE-p7) Message-ID: <200305170221.01711.olivas@digiflux.org>
next in thread | raw e-mail | index | archive | help
I've been playing with various MFS file sizes in a kernel and have come across
some issues. Either I'm doing something wrong, or there possibly is a bug
somewhere.
Background:
OS: FreeBSD 5.0-RELEASE-p7
When building a kernel with an MFS_ROOT size => 8000 bytes (~7.8 megs), after
the kernel has successfully loaded, if you subsequently try mounting a floppy
disk (to a mount point on the MFS) (doesn't matter if it's fresh floppy or
has some files on it) the kernel panics with the following message:
panic: isa_dmastart: bad bounce buffer
syncing disks, buffers remaining... panic: bwrite: buffer is not busy???
But, for an MFS that is 7000 (~6.8 megs) it works with out a hitch.
This behavior has been reproducable on two different systems with more than
plenty of memort available.
--
dmesg output of kernel that panics (MD_ROOT_SIZE=8000)
(thank god dmesg is saved between warm boots):
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-p7 #1: Fri May 16 15:18:39 CEST 2003
olivas@thos.digiflux.org:/usr/src/release/picobsd/warbsd/build_dir-warbsd/PICOBSD-warbsd
Preloaded elf kernel "/kernel" at 0xc0f86000.
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 360790606 Hz
CPU: AMD-K6(tm) 3D+ Processor (360.79-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x591 Stepping = 1
Features=0x8021bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE,MMX>
AMD Features=0xffffffff80000800<SYSCALL,3DNow!>
real memory = 167772160 (160 MB)
avail memory = 146579456 (139 MB)
Initializing GEOMetry subsystem
K6-family MTRR support enabled (2 registers)
ACPI-0159: *** Error: AcpiLoadTables: Could not get RSDP,
AE_NO_ACPI_TABLES
ACPI-0213: *** Error: AcpiLoadTables: Could not load tables:
AE_NO_ACPI_TABLES
ACPI: table load failed: AE_NO_ACPI_TABLES
npx0: <math processor> on motherboard
npx0: INT 16 interface
Using $PIR table, 4 entries at 0xc00fdf70
pcib0: <OPTi 82C700 host to PCI bridge> at pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
isab0: <PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
cbb0: <TI1131 PCI-CardBus Bridge> at device 10.0 on pci0
cardbus0: <CardBus bus> on cbb0
pccard0: <16-bit PCCard bus> on cbb0
pci_cfgintr: 0:10 INTA routed to irq 11
cbb1: <TI1131 PCI-CardBus Bridge> at device 10.1 on pci0
cardbus1: <CardBus bus> on cbb1
pccard1: <16-bit PCCard bus> on cbb1
pci_cfgintr: 0:10 INTB routed to irq 11
pci0: <display, VGA> at device 18.0 (no driver attached)
ohci0: <OPTi 82C861 (FireLink) USB controller> mem 0xfecff000-0xfecfffff irq
10 at device 19.0 on pci0
usb0: OHCI version 1.0, legacy support
usb0: <OPTi 82C861 (FireLink) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: OPTi OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
atapci0: <Generic PCI ATA controller> port 0xfcf0-0xfcff at device 20.0 on
pci0
atapci0: Busmastering DMA not supported
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
orm0: <Option ROM> at iomem 0xc0000-0xcbfff on isa0
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> at port
0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
isa_dmainit(2, 1024) failed
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> at port 0x64,0x60 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model Generic PS/2 mouse, device ID 0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
unknown: <PNP0303> can't assign resources (port)
speaker0: <PC speaker> at port 0x61 on isa0
psmcpnp0: irq resource info is missing; assuming irq 12
unknown: <PNP0501> can't assign resources (port)
unknown: <PNP0700> can't assign resources (port)
Timecounters tick every 10.000 msec
ipfw2 initialized, divert enabled, rule-based forwarding enabled, default to
accept, logging limited to 100 packets/entry by default
wi0: <WaveLAN/IEEE> at port 0x100-0x13f irq 11 function 0 config 1 on pccard0
wi0: 802.11 address: 00:90:d1:07:60:ee
wi0: using RF:PRISM2 MAC:HFA3841 CARD:HWB3163 rev.A
wi0: Intersil Firmware: Primary 0.03.00, Station 0.07.06
ad0: 19077MB <IBM-DJSA-220> [38760/16/63] at ata0-master BIOSPIO
acd0: CDROM <TOSHIBA CD-ROM XM-1902B> at ata1-master BIOSPIO
Mounting root from ufs:/dev/md0
<118>May 17 01:37:02 init: /etc/pwd.db: No such file or directory
<118>Enter full pathname of shell or RETURN for /bin/sh:
<118>#
Waiting (max 60 seconds) for system process `vnlru' to stop...stopped
Waiting (max 60 seconds) for system process `bufdaemon' to stop...stopped
Waiting (max 60 seconds) for system process `syncer' to stop...stopped
syncing disks, buffers remaining...
done
Uptime: 34s
Rebooting...
----------------
dmesg output of kernel that mounts a floppy disk with no problems
(MD_ROOTSIZE=7000):
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-p7 #2: Fri May 16 15:56:53 CEST 2003
olivas@thos.digiflux.org:/usr/src/release/picobsd/warbsd/build_dir-warbsd/PICOBSD-warbsd
Preloaded elf kernel "/kernel" at 0xc0e90000.
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 360790865 Hz
CPU: AMD-K6(tm) 3D+ Processor (360.79-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x591 Stepping = 1
Features=0x8021bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE,MMX>
AMD Features=0xffffffff80000800<SYSCALL,3DNow!>
real memory = 167772160 (160 MB)
avail memory = 147582976 (140 MB)
Initializing GEOMetry subsystem
K6-family MTRR support enabled (2 registers)
ACPI-0159: *** Error: AcpiLoadTables: Could not get RSDP,
AE_NO_ACPI_TABLES
ACPI-0213: *** Error: AcpiLoadTables: Could not load tables:
AE_NO_ACPI_TABLES
ACPI: table load failed: AE_NO_ACPI_TABLES
npx0: <math processor> on motherboard
npx0: INT 16 interface
Using $PIR table, 4 entries at 0xc00fdf70
pcib0: <OPTi 82C700 host to PCI bridge> at pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
isab0: <PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
cbb0: <TI1131 PCI-CardBus Bridge> at device 10.0 on pci0
cardbus0: <CardBus bus> on cbb0
pccard0: <16-bit PCCard bus> on cbb0
pci_cfgintr: 0:10 INTA routed to irq 11
cbb1: <TI1131 PCI-CardBus Bridge> at device 10.1 on pci0
cardbus1: <CardBus bus> on cbb1
pccard1: <16-bit PCCard bus> on cbb1
pci_cfgintr: 0:10 INTB routed to irq 11
pci0: <display, VGA> at device 18.0 (no driver attached)
ohci0: <OPTi 82C861 (FireLink) USB controller> mem 0xfecff000-0xfecfffff irq
10 at device 19.0 on pci0
usb0: OHCI version 1.0, legacy support
usb0: <OPTi 82C861 (FireLink) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: OPTi OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
atapci0: <Generic PCI ATA controller> port 0xfcf0-0xfcff at device 20.0 on
pci0
atapci0: Busmastering DMA not supported
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
orm0: <Option ROM> at iomem 0xc0000-0xcbfff on isa0
pmtimer0 on isa0
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> at port
0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> at port 0x64,0x60 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model Generic PS/2 mouse, device ID 0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
unknown: <PNP0303> can't assign resources (port)
speaker0: <PC speaker> at port 0x61 on isa0
psmcpnp0: irq resource info is missing; assuming irq 12
unknown: <PNP0501> can't assign resources (port)
unknown: <PNP0700> can't assign resources (port)
Timecounters tick every 10.000 msec
WARNING: apm_saver module requires apm enabled
ipfw2 initialized, divert enabled, rule-based forwarding enabled, default to
accept, logging limited to 100 packets/entry by default
wi0: <WaveLAN/IEEE> at port 0x100-0x13f irq 11 function 0 config 1 on pccard0
wi0: 802.11 address: 00:90:d1:07:60:ee
wi0: using RF:PRISM2 MAC:HFA3841 CARD:HWB3163 rev.A
wi0: Intersil Firmware: Primary 0.03.00, Station 0.07.06
ad0: 19077MB <IBM-DJSA-220> [38760/16/63] at ata0-master BIOSPIO
acd0: CDROM <TOSHIBA CD-ROM XM-1902B> at ata1-master BIOSPIO
Mounting root from ufs:/dev/md0
<118>May 17 01:38:24 init: /etc/pwd.db: No such file or directory
<118>Enter full pathname of shell or RETURN for /bin/sh:
<118>#
<118>
--------------
A diff of the two dmesg outputs:
diff dmesg2 dmesg1
dmesg1=kernel that panics
dmesg2=kernel that does not panic
4c4
< FreeBSD 5.0-RELEASE-p7 #1: Fri May 16 15:18:39 CEST 2003
---
> FreeBSD 5.0-RELEASE-p7 #2: Fri May 16 15:56:53 CEST 2003
6c6
< Preloaded elf kernel "/kernel" at 0xc0f86000.
---
> Preloaded elf kernel "/kernel" at 0xc0e90000.
8c8
< Timecounter "TSC" frequency 360790606 Hz
---
> Timecounter "TSC" frequency 360790865 Hz
14c14
< avail memory = 146579456 (139 MB)
---
> avail memory = 147582976 (140 MB)
46a47
> pmtimer0 on isa0
48d48
< isa_dmainit(2, 1024) failed
68a69
> WARNING: apm_saver module requires apm enabled
77c78
< <118>May 17 01:37:02 init: /etc/pwd.db: No such file or directory
---
> <118>May 17 01:38:24 init: /etc/pwd.db: No such file or directory
80,87c81
< Waiting (max 60 seconds) for system process `vnlru' to stop...stopped
< Waiting (max 60 seconds) for system process `bufdaemon' to stop...stopped
< Waiting (max 60 seconds) for system process `syncer' to stop...stopped
<
< syncing disks, buffers remaining...
< done
< Uptime: 34s
< Rebooting...
---
> <118>
As you can see, in the kernel that panics, isa_dmainit gives an error.
My current test kernel config file follows:
#
# $FreeBSD: src/release/picobsd/net/PICOBSD,v 1.14 2002/03/15 08:46:18 luigi
Exp $
#
#Line starting with #PicoBSD contains PicoBSD build parameters
#marker def_sz init MFS_inodes floppy_inodes
#PicoBSD 7000 init 4096 32768
options MD_ROOT_SIZE=7000 # same as def_sz
hints "PICOBSD.hints"
machine i386
#cpu I386_CPU
cpu I486_CPU
cpu I586_CPU
cpu I686_CPU
ident WarBSD
maxusers 0
options INET #InterNETworking
#options INET6
#options SOFTUPDATES
#options UFS_DIRHASH
#options UFS_ACL
options MSDOSFS
options MD_ROOT
options SYSVSHM
options SYSVMSG
options SYSVSEM
options _KPOSIX_PRIORITY_SCHEDULING
options KBD_INSTALL_CDEV
options FFS #Berkeley Fast Filesystem
options NFSCLIENT #Network Filesystem
options MD_ROOT #MFS as root
options MSDOSFS #MSDOS Filesystem
options NTFS
options CD9660 #ISO 9660 Filesystem
options PSEUDOFS
options PROCFS
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4
#options COMPAT_OLDISA #Use ISA shims and glue for old drivers
# Support for bridging and bandwidth limiting
#options DUMMYNET
#options BRIDGE
#options INVARIANTS
#options INVARIANT_SUPPORT
#options WITNESS
#options WITNESS_SKIPSPIN
device isa
device eisa
device pci
device mca
device acpi
device fdc
#options FDC_DEBUG
device ata
device atadisk
device atapicd
device atapifd
options ATA_STATIC_ID #Static device numbering
# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc
device atkbd
device psm
device vga
device splash
device blank_saver
device agp
device apm
device pmtimer
# syscons is the default console driver, resembling an SCO console
device sc
device npx
device sio
device scbus
device da
device ppbus
#device ppc
device lpt
#device plip
#device ppi
device uhci
device ohci
device usb
device ugen
#device uhid
device ukbd
#device ulpt
device umass
#device ums
#device aue
#device cue
#device kue
#PCCARD (PCMCIA) Support
device cbb
device pccard
device cardbus
#oldcard pcmcia bus
#device card 2
#device pcic
#Serial ports
device sio
# 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
# ISA Ethernet NICs. pccard nics included.
device cs # Crystal Semiconductor CS89x0 NIC
# 'device ed' requires 'device miibus'
device ed # NE[12]000, SMC Ultra, 3c503, DS8390 cards
device ex # Intel EtherExpress Pro/10 and Pro/10+
#device ep # Etherlink III based cards
device fe # Fujitsu MB8696x based cards
device lnc # NE2100, NE32-VL Lance Ethernet cards
device sn # SMC's 9000 series of ethernet chips
device xe # Xircom pccard ethernet
# ISA devices that use the old ISA shims
#device le
# Wireless NIC cards
device an # Aironet 4500/4800 802.11 wireless NICs.
device awi # BayStack 660 and others
device wi # WaveLAN/Intersil/Symbol 802.11 wireless
NICs.
#device wl # Older non 802.11 Wavelan wireless NIC.
device random
device loop
device ether
device sl
device tun
#device vn
device pty
device md
#device gzip # Exec gzipped a.out's
device bpf
device speaker
#device gif
#device faith
options IPFIREWALL
options IPFIREWALL_VERBOSE
options IPFIREWALL_FORWARD
options IPFIREWALL_VERBOSE_LIMIT=100
options IPFIREWALL_DEFAULT_TO_ACCEPT
options IPDIVERT
#options IPFILTER
#options IPFILTER_LOG
#options IPSTEALTH
options RANDOM_IP_ID
#options ACCEPT_FILTER_DATA
options POWERFAIL_NMI
device apm_saver
--
My question is, is this a bug in the kernel, or am I doing something to cause
it to act screwy?
This same bug occurs on both machines that I've tested it on.
Any help you can give is greatly appreciated.
-Stacy
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200305170221.01711.olivas>