Date: Sun, 14 Apr 2002 09:18:49 +1000 (EST) From: Steven Goodwin <steve@cit.gu.edu.au> To: freebsd-hackers@freebsd.org Subject: Kernel panic (fwd) Message-ID: <Pine.GSO.3.96.1020414085023.14716C-400000@kurango.cit.gu.edu.au>
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[-- Attachment #1 --]
Hi guys. I am getting some kernel panics and haven't been able to work
out a solution from posting to questions. I have tried disabling
soft-updates and DMA to no avail. I have also tried a hack with
/sys/i386/i386/i686_mem.c (i686_mrstoreone() function) without success. I
have the latest source which includes a fix for the AMD 760 chipset
(something to do with agp). One thing I have noticed is that some people
with the 82C686 ATA100 controller get a message that doesn't appear for
me.
atapci0: <VIA 82C686 ATA100 controller> port 0xd000-0xd00f at device 7.1
pci0atapci0: Correcting VIA config for southbridge data corruption bug
My chipset uses the 82C686(b) chip. The function that corrects the
VIA config is ata_via_southbridge_fixup(d2evice_t dev) in the
/sys/dev/ata/ata-pci.c file. Anyway, here is my original post and
attachments. Any help would be greatly appreciated.
Thanks,
Steve
---------- Forwarded message ----------
Date: Mon, 1 Apr 2002 09:22:31 +1000 (EST)
From: Steven Goodwin <steve@kurango.cit.gu.edu.au>
To: freebsd-questions@freebsd.org
Subject: Kernel panic
Hello. I have a problem with my home machine. I get a kernel panic
during cvsup and some other filesystem intensive operations such us
extracting large tarballs. I can, however, build and install world
without problems (so far). I have tried building the kernel with all
compiler optimisations off as well as removing all unnecessary devices
from the kernel. I have included as attachments the panic output and gdb
session (panic.txt), kernel configuration (NOISY), and dmesg output
(dmesg.txt). My machine is an Athlon @ 1.4 GHz running on an ASUS A7M266
motherboard (AMD760 chipset). Can anyone help me here?
Thanks,
Steve
[-- Attachment #2 --]
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xc4b4641e
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc025eca5
stack pointer = 0x10:0xcdcc5bf8
frame pointer = 0x10:0xcdcc5bf8
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 = 302 (tar)
interrupt mask = none
trap number = 12
panic: page fault
syncing disks... 124 92 28 23 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
giving up on 3 buffers
Uptime: 5m52s
dumping to dev #ad/0x20001, offset 1573024
dump ata0: resetting devices .. done
255 254 253 252 251 250 249 248 247 246 245 244 243 242 241 240 239 238 237 236
235 234 233 232 231 230 229 228 227 226 225 224 223 222 221 220 219 218 217 216
215 214 213 212 211 210 209 208 207 206 205 204 203 202 201 200 199 198 197 196
195 194 193 192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176
175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156
155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136
135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116
115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 9
4 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68
67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1
4 13 12 11 10 9 8 7 6 5 4 3 2 1 0
---
#0 0xc01529ee in dumpsys ()
And from gdb ...
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
487 if (dumping++) {
(kgdb) where
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc01527bf in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc0152be4 in poweroff_wait (junk=0xc02bc98c, howto=-1070873425)
at /usr/src/sys/kern/kern_shutdown.c:595
#3 0xc027e65e in trap_fatal (frame=0xcdcc5bb8, eva=3300156446)
at /usr/src/sys/i386/i386/trap.c:966
#4 0xc027e331 in trap_pfault (frame=0xcdcc5bb8, usermode=0, eva=3300156446)
at /usr/src/sys/i386/i386/trap.c:859
#5 0xc027df1b in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16,
tf_edi = -962740224, tf_esi = -1054033920, tf_ebp = -842245128,
tf_isp = -842245148, tf_ebx = 32072295, tf_edx = -962738555,
tf_ecx = 255, tf_eax = -994810850, tf_trapno = 12, tf_err = 0,
tf_eip = -1071256411, tf_cs = 8, tf_eflags = 66183, tf_esp = -842245084,
tf_ss = -1071603280}) at /usr/src/sys/i386/i386/trap.c:458
#6 0xc025eca5 in skpc (mask0=255, size=32072295,
cp0=0xc4b4641e <Address 0xc4b4641e out of bounds>)
at /usr/src/sys/libkern/skpc.c:50
#7 0xc020a1b0 in ffs_nodealloccg (ip=0xc147d000, cg=39, ipref=426816,
mode=33188) at /usr/src/sys/ufs/ffs/ffs_alloc.c:1347
#8 0xc020937b in ffs_hashalloc (ip=0xc147d000, cg=39, pref=426816,
size=33188, allocator=0xc020a070 <ffs_nodealloccg>)
at /usr/src/sys/ufs/ffs/ffs_alloc.c:863
#9 0xc0208e1c in ffs_valloc (pvp=0xcdd222c0, mode=33188, cred=0xc1357a80,
vpp=0xcdcc5ca0) at /usr/src/sys/ufs/ffs/ffs_alloc.c:607
#10 0xc021bdcb in ufs_makeinode (mode=33188, dvp=0xcdd222c0, vpp=0xcdcc5edc,
cnp=0xcdcc5ef0) at /usr/src/sys/ufs/ufs/ufs_vnops.c:2115
#11 0xc0219750 in ufs_create (ap=0xcdcc5dfc)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:195
#12 0xc021c0c1 in ufs_vnoperate (ap=0xcdcc5dfc)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:2422
#13 0xc0186541 in vn_open (ndp=0xcdcc5ec8, fmode=1550, cmode=420)
at vnode_if.h:106
#14 0xc018272c in open (p=0xcbfb2d40, uap=0xcdcc5f80)
at /usr/src/sys/kern/vfs_syscalls.c:1021
#15 0xc027e90d in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
tf_edi = 134824417, tf_esi = 1, tf_ebp = -1077937512,
tf_isp = -842244140, tf_ebx = 1549, tf_edx = 0, tf_ecx = 33, tf_eax = 5,
tf_trapno = 7, tf_err = 2, tf_eip = 134681040, tf_cs = 31,
tf_eflags = 518, tf_esp = -1077937876, tf_ss = 47})
at /usr/src/sys/i386/i386/trap.c:1167
#16 0xc0272ec5 in Xint0x80_syscall ()
#17 0x80507dd in ?? ()
#18 0x8052bb2 in ?? ()
#19 0x8048137 in ?? ()
(kgdb) up 5
#5 0xc027df1b in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16,
tf_edi = -962740224, tf_esi = -1054033920, tf_ebp = -842245128,
tf_isp = -842245148, tf_ebx = 32072295, tf_edx = -962738555,
tf_ecx = 255, tf_eax = -994810850, tf_trapno = 12, tf_err = 0,
tf_eip = -1071256411, tf_cs = 8, tf_eflags = 66183, tf_esp = -842245084,
tf_ss = -1071603280}) at /usr/src/sys/i386/i386/trap.c:458
458 (void) trap_pfault(&frame, FALSE, eva);
(kgdb) frame frame->tf_ebp frame->tf_eip
#0 0xc025eca5 in skpc (mask0=255, size=32072295,
cp0=0xc4b4641e <Address 0xc4b4641e out of bounds>)
at /usr/src/sys/libkern/skpc.c:50
50 for (end = &cp[size]; cp < end && *cp == mask; ++cp);
(kgdb) list
45 {
46 register u_char *cp, *end, mask;
47
48 mask = mask0;
49 cp = (u_char *)cp0;
50 for (end = &cp[size]; cp < end && *cp == mask; ++cp);
51 return (end - cp);
52 }
(kgdb) print cp
$1 = (u_char *) 0x0
(kgdb) print end
$2 = (u_char *) 0x0
(kgdb) print mask
$3 = 0 '\000'
[-- Attachment #3 --]
#
# GENERIC -- Generic kernel configuration file for FreeBSD/i386
#
# For more information on this file, please read the handbook section on
# Kernel Configuration Files:
#
# http://www.FreeBSD.org/handbook/kernelconfig-config.html
#
# The handbook is also available locally in /usr/share/doc/handbook
# if you've installed the doc distribution, otherwise always see the
# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
# latest information.
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ./LINT configuration file. If you are
# in doubt as to the purpose or necessity of a line, check first in LINT.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.246.2.38 2002/01/25 17:41:40 murray Exp $
machine i386
cpu I686_CPU
ident NOISY
maxusers 0
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
#options MATH_EMULATE #Support for x87 emulation
options INET #InterNETworking
options INET6 #IPv6 communications protocols
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options SOFTUPDATES #Enable FFS soft updates support
options UFS_DIRHASH #Improve performance on big directories
#options MFS #Memory Filesystem
#options MD_ROOT #MD is a potential root device
options NFS #Network Filesystem
options NFS_ROOT #NFS usable as root device, NFS required
options MSDOSFS #MSDOS Filesystem
options CD9660 #ISO 9660 Filesystem
#options CD9660_ROOT #CD-ROM usable as root, CD9660 required
options PROCFS #Process filesystem
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
#options SCSI_DELAY=15000 #Delay (in ms) before probing SCSI
options UCONSOLE #Allow users to grab the console
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
options KTRACE #ktrace(1) support
options SYSVSHM #SYSV-style shared memory
options SYSVMSG #SYSV-style message queues
options SYSVSEM #SYSV-style semaphores
options P1003_1B #Posix P1003_1B real-time extensions
options _KPOSIX_PRIORITY_SCHEDULING
options ICMP_BANDLIM #Rate limit bad replies
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
# To make an SMP kernel, the next two are needed
#options SMP # Symmetric MultiProcessor Kernel
#options APIC_IO # Symmetric (APIC) I/O
device isa
device eisa
device pci
# Floppy drives
device fdc0 at isa? port IO_FD1 irq 6 drq 2
device fd0 at fdc0 drive 0
#device fd1 at fdc0 drive 1
#
# If you have a Toshiba Libretto with its Y-E Data PCMCIA floppy,
# don't use the above line for fdc0 but the following one:
#device fdc0
# ATA and ATAPI devices
#device ata0 at isa? port IO_WD1 irq 14
#device ata1 at isa? port IO_WD2 irq 15
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 Controllers
#device ahb # EISA AHA1742 family
#device ahc # AHA2940 and onboard AIC7xxx devices
#device amd # AMD 53C974 (Tekram DC-390(T))
#device isp # Qlogic family
#device ncr # NCR/Symbios Logic
#device sym # NCR/Symbios Logic (newer chipsets)
#options SYM_SETUP_LP_PROBE_MAP=0x40
# Allow ncr to attach legacy NCR devices when
# both sym and ncr are configured
#device adv0 at isa?
#device adw
#device bt0 at isa?
#device aha0 at isa?
#device aic0 at isa?
#device ncv # NCR 53C500
#device nsp # Workbit Ninja SCSI-3
#device stg # TMC 18C30/18C50
# SCSI peripherals
#device scbus # SCSI bus (required)
#device da # Direct Access (disks)
#device sa # Sequential Access (tape etc)
#device cd # CD
#device pass # Passthrough device (direct SCSI access)
# RAID controllers interfaced to the SCSI subsystem
#device asr # DPT SmartRAID V, VI and Adaptec SCSI RAID
#device dpt # DPT Smartcache - See LINT for options!
#device mly # Mylex AcceleRAID/eXtremeRAID
# RAID controllers
#device aac # Adaptec FSA RAID, Dell PERC2/PERC3
#device ida # Compaq Smart RAID
#device amr # AMI MegaRAID
#device mlx # Mylex DAC960 family
#device twe # 3ware Escalade
# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1 flags 0x1
device psm0 at atkbdc? irq 12
device vga0 at isa?
# splash screen/screen saver
pseudo-device splash
# syscons is the default console driver, resembling an SCO console
device sc0 at isa? flags 0x100
# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
#device vt0 at isa?
#options XSERVER # support for X server on a vt console
#options FAT_CURSOR # start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines
#options PCVT_SCANSET=2 # IBM keyboards are non-std
# Floating point support - do not disable.
device npx0 at nexus? port IO_NPX irq 13
# Power management support (see LINT for more options)
#device apm0 at nexus? disable flags 0x20 # Advanced Power Management
# PCCARD (PCMCIA) support
#device card
#device pcic0 at isa? irq 0 port 0x3e0 iomem 0xd0000
#device pcic1 at isa? irq 0 port 0x3e2 iomem 0xd4000 disable
# Serial (COM) ports
device sio0 at isa? port IO_COM1 flags 0x10 irq 4
device sio1 at isa? port IO_COM2 irq 3
#device sio2 at isa? disable port IO_COM3 irq 5
#device sio3 at isa? disable port IO_COM4 irq 9
# Parallel port
device ppc0 at isa? irq 7
device ppbus # Parallel port bus (required)
device lpt # Printer
#device plip # TCP/IP over parallel
device ppi # Parallel port interface device
#device vpo # Requires scbus and da
# PCI Ethernet NICs.
#device de # DEC/Intel DC21x4x (``Tulip'')
#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 NICs
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 wx # Intel Gigabit Ethernet Card (``Wiseman'')
#device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
#device bge # Broadcom BCM570x (``Tigon III'')
# ISA Ethernet NICs.
# 'device ed' requires 'device miibus'
#device ed0 at isa? port 0x280 irq 10 iomem 0xd8000
#device ex
#device ep
#device fe0 at isa? port 0x300
# Xircom Ethernet
#device xe
# PRISM I IEEE 802.11b wireless NIC.
#device awi
# WaveLAN/IEEE 802.11 wireless NICs. Note: the WaveLAN/IEEE really
# exists only as a PCMCIA device, so there is no ISA attachment needed
# and resources will always be dynamically assigned by the pccard code.
#device wi
# Aironet 4500/4800 802.11 wireless NICs. Note: the declaration below will
# work for PCMCIA and PCI cards, as well as ISA cards set to ISA PnP
# mode (the factory default). If you set the switches on your ISA
# card for a manually chosen I/O address and IRQ, you must specify
# those parameters here.
#device an
# The probe order of these is presently determined by i386/isa/isa_compat.c.
#device ie0 at isa? port 0x300 irq 10 iomem 0xd0000
#device le0 at isa? port 0x300 irq 5 iomem 0xd0000
#device lnc0 at isa? port 0x280 irq 10 drq 0
#device cs0 at isa? port 0x300
#device sn0 at isa? port 0x300 irq 10
# Pseudo devices - the number indicates how many units to allocate.
pseudo-device loop # Network loopback
pseudo-device ether # Ethernet support
#pseudo-device sl 1 # Kernel SLIP
#pseudo-device ppp 1 # Kernel PPP
pseudo-device tun # Packet tunnel.
pseudo-device pty # Pseudo-ttys (telnet etc)
#pseudo-device md # Memory "disks"
pseudo-device gif # IPv6 and IPv4 tunneling
pseudo-device faith 1 # IPv6-to-IPv4 relaying (translation)
# The `bpf' pseudo-device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
pseudo-device bpf #Berkeley packet filter
# 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 uscanner # Scanners
#device urio # Diamond Rio MP3 Player
# USB Ethernet, requires mii
#device aue # ADMtek USB ethernet
#device cue # CATC USB ethernet
#device kue # Kawasaki LSI USB ethernet
# From LINT
# SOUNDCARD support
device pcm
#
# TCP_DROP_SYNFIN adds support for ignoring TCP packets with SYN+FIN. This
# prevents nmap et al. from identifying the TCP/IP stack, but breaks support
# for RFC1644 extensions and is not recommended for web servers.
#
options TCP_DROP_SYNFIN #drop TCP packets with SYN+FIN
# RANDOM_IP_ID causes the ID field in IP packets to be randomized
options RANDOM_IP_ID
#
# Enable the kernel debugger.
#
options DDB
[-- Attachment #4 --]
Copyright (c) 1992-2002 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 4.5-STABLE #15: Sat Mar 30 23:47:42 GMT 2002
root@noisy:/usr/obj/usr/src/sys/NOISY
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 1400063646 Hz
CPU: AMD Athlon(tm) Processor (1400.06-MHz 686-class CPU)
Origin = "AuthenticAMD" Id = 0x644 Stepping = 4
Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
AMD Features=0xc0440000<<b18>,AMIE,DSP,3DNow!>
real memory = 268353536 (262064K bytes)
avail memory = 257536000 (251500K bytes)
Preloaded elf kernel "kernel" at 0xc038a000.
Pentium Pro MTRR support enabled
Using $PIR table, 9 entries at 0xc00f12f0
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <AMD-761 host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib1: <AMD-761 PCI-PCI (4x AGP) bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <NVidia GeForce2 GTS graphics accelerator> at 5.0 irq 11
isab0: <VIA 82C686 PCI-ISA bridge> at device 4.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 82C686 ATA100 controller> port 0xd800-0xd80f at device 4.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
uhci0: <VIA 83C572 USB controller> port 0xd400-0xd41f irq 9 at device 4.2 on pci0
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
ums0: Microsoft Microsoft Wheel Mouse Optical\M-., rev 1.10/1.21, addr 2, iclass 3/1
ums0: 3 buttons and Z dir.
uhci1: <VIA 83C572 USB controller> port 0xd000-0xd01f irq 9 at device 4.3 on pci0
usb1: <VIA 83C572 USB controller> on uhci1
usb1: USB revision 1.0
uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
chip1: <VIA 82C686 ACPI interface> at device 4.4 on pci0
pcm0: <CMedia CMI8738> port 0xa400-0xa4ff irq 10 at device 5.0 on pci0
rl0: <RealTek 8139 10/100BaseTX> port 0xa000-0xa0ff mem 0xe5800000-0xe58000ff irq 9 at device 9.0 on pci0
rl0: Ethernet address: 00:40:f4:28:bf:cd
miibus0: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus0
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pcm1: <Creative EMU10K1> port 0x9800-0x981f irq 5 at device 10.0 on pci0
orm0: <Option ROMs> at iomem 0xc0000-0xcafff,0xcc000-0xcffff on isa0
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 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 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
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 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
ppi0: <Parallel I/O> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ad0: 39266MB <IC35L040AVER07-0> [79780/16/63] at ata0-master UDMA100
ad1: 14652MB <ST315323A> [29770/16/63] at ata0-slave UDMA66
acd0: DVD-ROM <Pioneer DVD-ROM ATAPIModel DVD-116 0109> at ata1-master PIO4
acd1: CD-RW <SONY CD-RW CRX1611> at ata1-slave PIO4
Mounting root from ufs:/dev/ad0s1a
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