I get "Fatal double fault" error when writing to a filesystem
mounted from NFS server.

        Both NFS server and client are running 6.2-RELEASE-p7.

        I've attached dmesg from client and kernel config from server
and client.

        Both have same these NFS options in /etc/rc.conf

rpcbind_enable="YES"
nfs_server_enable="YES"
nfs_client_enable="YES"
nfs_reserved_port_only="YES"
rpc_lockd_enable="YES"
rpc_statd_enable="YES" 

        I have three kernel crash dumps available.

        The panic message is same in vmcore.0 and .1 

Fatal double fault:
eip = 0xc0608015
esp = 0xe3955000
ebp = 0xe3955020
panic: double fault

        Panic message in vmcore.2 has different eip and ebp values.

Fatal double fault:
eip = 0xc063242a
esp = 0xe3955000
ebp = 0xe3955008
panic: double fault

        And here is backtrace from vmcore.2, which is identical to
backtrace found in vmcore.0 and vmcore.1.

# kgdb kernel.debug /home/crash/vmcore.2 
Fatal double fault:
eip = 0xc063242a
esp = 0xe3955000
ebp = 0xe3955008
panic: double fault
Uptime: 14m41s
Dumping 1023 MB (2 chunks)
  chunk 0: 1MB (159 pages) ... ok
  chunk 1: 1023MB (261872 pages) 1007 991 975 959 943 927 911 895 879
863 847 831 815 799 783 767 751 735 719 703 687 671 655 639 623 607 591
575 559 543 527 511 495 479 463 447 431 415 399 383 367 351 335 319 303
287 271 255 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15

#0  doadump () at pcpu.h:165
165             __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) bt 
#0  doadump () at pcpu.h:165
#1  0xc04edf2a in boot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:409
#2  0xc04ee1c0 in panic (fmt=0xc069618e "double fault")
    at /usr/src/sys/kern/kern_shutdown.c:565
#3  0xc0658fde in dblfault_handler () at /usr/src/sys/i386/i386/trap.c:866
#4  0x00000000 in ?? ()

Copyright (c) 1992-2007 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 is a registered trademark of The FreeBSD Foundation.
FreeBSD 6.2-RELEASE-p7 #81: Thu Aug  2 17:50:20 EEST 2007
    [EMAIL PROTECTED]:/usr/obj/usr/src/sys/THUNDERBOLT
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm) XP 2600+ (2088.08-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x681  Stepping = 1
  
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
  AMD Features=0xc0400800<SYSCALL,MMX+,3DNow+,3DNow>
real memory  = 1073676288 (1023 MB)
avail memory = 1037500416 (989 MB)
acpi0: <XPC AWRDACPI> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
cpu0: <ACPI 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
pci0: <memory, RAM> at device 0.1 (no driver attached)
pci0: <memory, RAM> at device 0.2 (no driver attached)
pci0: <memory, RAM> at device 0.3 (no driver attached)
pci0: <memory, RAM> at device 0.4 (no driver attached)
pci0: <memory, RAM> at device 0.5 (no driver attached)
isab0: <PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
pci0: <serial bus, SMBus> at device 1.1 (no driver attached)
ohci0: <OHCI (generic) USB controller> mem 0xe8080000-0xe8080fff irq 3 at 
device 2.0 on pci0
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1: <OHCI (generic) USB controller> mem 0xe8083000-0xe8083fff irq 5 at 
device 2.1 on pci0
ohci1: [GIANT-LOCKED]
usb1: OHCI version 1.0, legacy support
usb1: SMM does not respond, resetting
usb1: <OHCI (generic) USB controller> on ohci1
usb1: USB revision 1.0
uhub1: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
ehci0: <NVIDIA nForce2 USB 2.0 controller> mem 0xe8086000-0xe80860ff irq 10 at 
device 2.2 on pci0
ehci0: [GIANT-LOCKED]
usb2: EHCI version 1.0
usb2: companion controllers, 4 ports each: usb0 usb1
usb2: <NVIDIA nForce2 USB 2.0 controller> on ehci0
usb2: USB revision 2.0
uhub2: nVidia EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2: 6 ports with 6 removable, self powered
uhub3: vendor 0x050d product 0x0237, class 9/0, rev 2.00/0.00, addr 2
uhub3: multiple transaction translators
uhub3: 7 ports with 7 removable, self powered
ucom0: Prolific Technology Inc. USB-Serial Controller, rev 1.10/3.00, addr 3
ugen0: SCM Microsystems Inc. SCR3310 USB Smart Card Reader, rev 2.00/5.21, addr 
4
nve0: <NVIDIA nForce MCP2 Networking Adapter> port 0xd000-0xd007 mem 
0xe8087000-0xe8087fff irq 11 at device 4.0 on pci0
nve0: Ethernet address 00:30:1b:af:7d:cc
miibus0: <MII bus> on nve0
rlphy0: <RTL8201L 10/100 media interface> on miibus0
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
nve0: Ethernet address: 00:30:1b:af:7d:cc
pci0: <multimedia, audio> at device 5.0 (no driver attached)
pcm0: <nVidia nForce2> port 0xd400-0xd4ff,0xd800-0xd87f mem 
0xe8081000-0xe8081fff irq 5 at device 6.0 on pci0
pcm0: <Avance Logic ALC650 AC97 Codec>
pcib1: <ACPI PCI-PCI bridge> at device 8.0 on pci0
pci1: <ACPI PCI bus> on pcib1
atapci0: <nVidia nForce2 UDMA133 controller> port 
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f at device 9.0 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
fwohci0: <1394 Open Host Controller Interface> mem 
0xe8084000-0xe80847ff,0xe8085000-0xe808503f irq 11 at device 13.0 on pci0
fwohci0: OHCI version 1.10 (ROM=0)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:30:1b:30:1b:af:7e:30
fwohci0: Phy 1394a available S400, 3 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
sbp0: <SBP-2/SCSI over FireWire> on firewire0
fwohci0: Initiate bus reset
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
pcib2: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci3: <ACPI PCI bus> on pcib2
nvidia0: <GeForce4 Ti 4400> mem 
0xe4000000-0xe4ffffff,0xd0000000-0xd7ffffff,0xd8000000-0xd807ffff irq 10 at 
device 0.0 on pci3
nvidia0: [GIANT-LOCKED]
acpi_tz0: <Thermal Zone> on acpi0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
ppc0: <ECP parallel printer port> port 0x378-0x37f,0x778-0x77b irq 7 drq 3 on 
acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/16 bytes threshold
ppbus0: <Parallel port bus> on ppc0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model IntelliMouse Explorer, device ID 4
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xd0000-0xd3fff,0xd4000-0xd57ff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 2088076745 Hz quality 800
Timecounters tick every 1.000 msec
ad0: 114473MB <Seagate ST3120026A 3.54> at ata0-master UDMA100
acd0: CDRW <PLEXTOR CD-R PX-320A/1.06> at ata1-master PIO4
Trying to mount root from ufs:/dev/ad0s3a
WARNING: / was not properly dismounted
WARNING: /tmp was not properly dismounted
WARNING: /var was not properly dismounted
WARNING: /usr was not properly dismounted
WARNING: /home was not properly dismounted
WARNING: /scratch was not properly dismounted
All threads purged from ugen0.1
All threads purged from ugen0.2
All threads purged from ugen0.3
#
# 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/doc/en_US.ISO8859-1/books/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 ../../conf/NOTES and NOTES files.
# If you are in doubt as to the purpose or necessity of a line, check first
# in NOTES.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.429.2.1 2005/07/18 12:23:41 kensmith 
Exp $

machine         i386
#cpu            I486_CPU
#cpu            I586_CPU
cpu             I686_CPU
ident           THUNDERBOLT

# To statically compile in device wiring instead of /boot/device.hints
#hints          "GENERIC.hints"         # Default places to look for devices.

makeoptions     DEBUG=-g                # Build kernel with gdb(1) debug symbols

#options        SCHED_ULE               # ULE scheduler
options         SCHED_4BSD              # 4BSD scheduler
options         PREEMPTION              # Enable kernel thread preemption
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 /, requires NFSCLIENT
options         MSDOSFS                 # MSDOS Filesystem
options         CD9660                  # ISO 9660 Filesystem
options         PROCFS                  # Process filesystem (requires PSEUDOFS)
options         PSEUDOFS                # Pseudo-filesystem framework
options         GEOM_GPT                # GUID Partition Tables.
options         COMPAT_43               # Compatible with BSD 4.3 [KEEP THIS!]
options         COMPAT_FREEBSD4         # Compatible with FreeBSD4
options         COMPAT_FREEBSD5         # Compatible with FreeBSD5
options         SCSI_DELAY=5000         # Delay (in ms) before probing SCSI
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        AHC_REG_PRETTY_PRINT    # Print register bitfields in debug
                                        # output.  Adds ~128k to driver.
#options        AHD_REG_PRETTY_PRINT    # Print register bitfields in debug
                                        # output.  Adds ~215k to driver.
options         ADAPTIVE_GIANT          # Giant mutex is adaptive.

#device         apic                    # I/O APIC

# Bus support.
#device         eisa
device          pci

# Floppy drives
#device         fdc

# ATA and ATAPI devices
device          ata
device          atadisk         # ATA disk drives
#device         ataraid         # ATA RAID 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         ahd             # AHA39320/29320 and onboard AIC79xx devices
#device         amd             # AMD 53C974 (Tekram DC-390(T))
#device         isp             # Qlogic family
#device         ispfw           # Firmware for QLogic HBAs- normally a module
#device         mpt             # LSI-Logic MPT-Fusion
#device         ncr             # NCR/Symbios Logic
#device         sym             # NCR/Symbios Logic (newer chipsets + those of 
`ncr')
#device         trm             # Tekram DC395U/UW/F DC315U adapters

#device         adv             # Advansys SCSI adapters
#device         adw             # Advansys wide SCSI adapters
#device         aha             # Adaptec 154x SCSI adapters
#device         aic             # Adaptec 15[012]x SCSI adapters, AIC-6[23]60.
#device         bt              # Buslogic/Mylex MultiMaster SCSI adapters

#device         ncv             # NCR 53C500
#device         nsp             # Workbit Ninja SCSI-3
#device         stg             # TMC 18C30/18C50

# SCSI peripherals
device          scbus           # SCSI bus (required for SCSI)
#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)

# RAID controllers interfaced to the SCSI subsystem
#device         amr             # AMI MegaRAID
#device         arcmsr          # Areca SATA II RAID
#device         asr             # DPT SmartRAID V, VI and Adaptec SCSI RAID
#device         ciss            # Compaq Smart RAID 5*
#device         dpt             # DPT Smartcache III, IV - See NOTES for options
#device         hptmv           # Highpoint RocketRAID 182x
#device         iir             # Intel Integrated RAID
#device         ips             # IBM (Adaptec) ServeRAID
#device         mly             # Mylex AcceleRAID/eXtremeRAID
#device         twa             # 3ware 9000 series PATA/SATA RAID

# RAID controllers
#device         aac             # Adaptec FSA RAID
#device         aacp            # SCSI passthrough for aac (requires CAM)
#device         ida             # Compaq Smart RAID
#device         mlx             # Mylex DAC960 family
#device         pst             # Promise Supertrak SX6000
#device         twe             # 3ware ATA RAID

# 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          splash          # Splash screen and screen saver support

# syscons is the default console driver, resembling an SCO console
device          sc

# Enable this for the pcvt (VT220 compatible) console driver
#device         vt
#options        XSERVER         # support for X server on a vt console
#options        FAT_CURSOR      # start with block cursor

#device         agp             # support several AGP chipsets

# Power management support (see NOTES for more options)
#device         apm
# Add suspend/resume support for the i8254.
device          pmtimer

# PCCARD (PCMCIA) support
# PCMCIA and cardbus bridge support
#device         cbb             # cardbus (yenta) bridge
#device         pccard          # PC Card (16-bit) bus
#device         cardbus         # CardBus (32-bit) bus

# Serial (COM) ports
device          sio             # 8250, 16[45]50 based serial ports

# Parallel port
device          ppc
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

# If you've got a "dumb" serial or parallel PCI card that is
# supported by the puc(4) glue driver, uncomment the following
# line to enable it (connects to the sio and/or ppc drivers):
#device         puc

# PCI Ethernet NICs.
#device         de              # DEC/Intel DC21x4x (``Tulip'')
#device         em              # Intel PRO/1000 adapter Gigabit Ethernet Card
#device         ixgb            # Intel PRO/10GbE 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         bfe             # Broadcom BCM440x 10/100 Ethernet
#device         bge             # Broadcom BCM570xx Gigabit Ethernet
#device         dc              # DEC/Intel 21143 and various workalikes
#device         fxp             # Intel EtherExpress PRO/100B (82557, 82558)
#device         lge             # Level 1 LXT1001 gigabit Ethernet
#device         nge             # NatSemi DP83820 gigabit Ethernet
device          nve             # nVidia nForce MCP on-board Ethernet Networking
#device         pcn             # AMD Am79C97x PCI 10/100(precedence over 'lnc')
#device         re              # RealTek 8139C+/8169/8169S/8110S
#device         rl              # RealTek 8129/8139
#device         sf              # Adaptec AIC-6915 (``Starfire'')
#device         sis             # Silicon Integrated Systems SiS 900/SiS 7016
#device         sk              # SysKonnect SK-984x & SK-982x gigabit Ethernet
#device         ste             # Sundance ST201 (D-Link DFE-550TX)
#device         ti              # Alteon Networks Tigon I/II gigabit Ethernet
#device         tl              # Texas Instruments ThunderLAN
#device         tx              # SMC EtherPower II (83c170 ``EPIC'')
#device         vge             # VIA VT612x gigabit Ethernet
#device         vr              # VIA Rhine, Rhine II
#device         wb              # Winbond W89C840F
#device         xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')

# 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         ie              # EtherExpress 8/16, 3C507, StarLAN 10 etc.
#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         wlan            # 802.11 support
#device         an              # Aironet 4500/4800 802.11 wireless NICs.
#device         awi             # BayStack 660 and others
#device         ral             # Ralink Technology RT2500 wireless NICs.
#device         wi              # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
#device         wl              # Older non 802.11 Wavelan wireless NIC.

# Pseudo devices.
device          loop            # Network loopback
device          random          # Entropy device
device          ether           # Ethernet support
#device         sl              # Kernel SLIP
#device         ppp             # Kernel PPP
#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)

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
# Note that 'bpf' is required for DHCP.
device          bpf             # Berkeley packet filter

# USB support
#device         uhci            # UHCI PCI->USB interface
device          ohci            # OHCI PCI->USB interface
device          ehci            # EHCI PCI->USB interface (USB 2.0)
device          usb             # USB Bus (required)
#device         udbp            # USB Double Bulk Pipe devices
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         ural            # Ralink Technology RT2500USB wireless NICs
#device         urio            # Diamond Rio 500 MP3 player
#device         uscanner        # Scanners
# USB Ethernet, requires miibus
#device         aue             # ADMtek USB Ethernet
#device         axe             # ASIX Electronics USB Ethernet
#device         cdce            # Generic USB over Ethernet
#device         cue             # CATC USB Ethernet
#device         kue             # Kawasaki LSI USB Ethernet
#device         rue             # RealTek RTL8150 USB Ethernet

# FireWire support
device          firewire        # FireWire bus code
device          sbp             # SCSI over FireWire (Requires scbus and da)
#device         fwe             # Ethernet over FireWire (non-standard!)

# Omat saadot
options         INCLUDE_CONFIG_FILE     # Include this file in kernel
device          uplcom
device          ucom
#
# 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/doc/en_US.ISO8859-1/books/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 ../../conf/NOTES and NOTES files.
# If you are in doubt as to the purpose or necessity of a line, check first
# in NOTES.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.429.2.2 2005/09/18 03:37:58 scottl 
Exp $

machine         i386
cpu             I486_CPU
cpu             I586_CPU
cpu             I686_CPU
ident           LIGHTNING

# To statically compile in device wiring instead of /boot/device.hints
#hints          "GENERIC.hints"         # Default places to look for devices.

makeoptions     DEBUG=-g                # Build kernel with gdb(1) debug symbols

#options        SCHED_ULE               # ULE scheduler
options         SCHED_4BSD              # 4BSD scheduler
options         PREEMPTION              # Enable kernel thread preemption
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 /, requires NFSCLIENT
#options        MSDOSFS                 # MSDOS Filesystem
options         CD9660                  # ISO 9660 Filesystem
options         PROCFS                  # Process filesystem (requires PSEUDOFS)
options         PSEUDOFS                # Pseudo-filesystem framework
options         GEOM_GPT                # GUID Partition Tables.
options         COMPAT_43               # Compatible with BSD 4.3 [KEEP THIS!]
options         COMPAT_FREEBSD4         # Compatible with FreeBSD4
options         COMPAT_FREEBSD5         # Compatible with FreeBSD5
options         SCSI_DELAY=5000         # Delay (in ms) before probing SCSI
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        AHC_REG_PRETTY_PRINT    # Print register bitfields in debug
                                        # output.  Adds ~128k to driver.
#options        AHD_REG_PRETTY_PRINT    # Print register bitfields in debug
                                        # output.  Adds ~215k to driver.
options         ADAPTIVE_GIANT          # Giant mutex is adaptive.

device          apic                    # I/O APIC

# Bus support.
#device         eisa
device          pci

# Floppy drives
device          fdc

# ATA and ATAPI devices
device          ata
device          atadisk         # ATA disk drives
#device         ataraid         # ATA RAID 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         ahd             # AHA39320/29320 and onboard AIC79xx devices
#device         amd             # AMD 53C974 (Tekram DC-390(T))
#device         isp             # Qlogic family
#device         ispfw           # Firmware for QLogic HBAs- normally a module
#device         mpt             # LSI-Logic MPT-Fusion
#device         ncr             # NCR/Symbios Logic
device          sym             # NCR/Symbios Logic (newer chipsets + those of 
`ncr')
device          trm             # Tekram DC395U/UW/F DC315U adapters

#device         adv             # Advansys SCSI adapters
#device         adw             # Advansys wide SCSI adapters
#device         aha             # Adaptec 154x SCSI adapters
#device         aic             # Adaptec 15[012]x SCSI adapters, AIC-6[23]60.
#device         bt              # Buslogic/Mylex MultiMaster SCSI adapters

#device         ncv             # NCR 53C500
#device         nsp             # Workbit Ninja SCSI-3
#device         stg             # TMC 18C30/18C50

# SCSI peripherals
device          scbus           # SCSI bus (required for SCSI)
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)

# RAID controllers interfaced to the SCSI subsystem
#device         amr             # AMI MegaRAID
#device         arcmsr          # Areca SATA II RAID
#device         asr             # DPT SmartRAID V, VI and Adaptec SCSI RAID
#device         ciss            # Compaq Smart RAID 5*
#device         dpt             # DPT Smartcache III, IV - See NOTES for options
#device         hptmv           # Highpoint RocketRAID 182x
#device         iir             # Intel Integrated RAID
#device         ips             # IBM (Adaptec) ServeRAID
#device         mly             # Mylex AcceleRAID/eXtremeRAID
#device         twa             # 3ware 9000 series PATA/SATA RAID

# RAID controllers
#device         aac             # Adaptec FSA RAID
#device         aacp            # SCSI passthrough for aac (requires CAM)
#device         ida             # Compaq Smart RAID
#device         mlx             # Mylex DAC960 family
#device         pst             # Promise Supertrak SX6000
#device         twe             # 3ware ATA RAID

# 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          splash          # Splash screen and screen saver support

# syscons is the default console driver, resembling an SCO console
device          sc

# Enable this for the pcvt (VT220 compatible) console driver
#device         vt
#options        XSERVER         # support for X server on a vt console
#options        FAT_CURSOR      # start with block cursor

device          agp             # support several AGP chipsets

# Power management support (see NOTES for more options)
#device         apm
# Add suspend/resume support for the i8254.
device          pmtimer

# PCCARD (PCMCIA) support
# PCMCIA and cardbus bridge support
#device         cbb             # cardbus (yenta) bridge
#device         pccard          # PC Card (16-bit) bus
#device         cardbus         # CardBus (32-bit) bus

# Serial (COM) ports
device          sio             # 8250, 16[45]50 based serial ports

# Parallel port
device          ppc
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

# If you've got a "dumb" serial or parallel PCI card that is
# supported by the puc(4) glue driver, uncomment the following
# line to enable it (connects to the sio and/or ppc drivers):
#device         puc

# PCI Ethernet NICs.
#device         de              # DEC/Intel DC21x4x (``Tulip'')
#device         em              # Intel PRO/1000 adapter Gigabit Ethernet Card
#device         ixgb            # Intel PRO/10GbE 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         bfe             # Broadcom BCM440x 10/100 Ethernet
#device         bge             # Broadcom BCM570xx Gigabit Ethernet
#device         dc              # DEC/Intel 21143 and various workalikes
device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
#device         lge             # Level 1 LXT1001 gigabit Ethernet
#device         nge             # NatSemi DP83820 gigabit Ethernet
#device         nve             # nVidia nForce MCP on-board Ethernet Networking
#device         pcn             # AMD Am79C97x PCI 10/100(precedence over 'lnc')
#device         re              # RealTek 8139C+/8169/8169S/8110S
#device         rl              # RealTek 8129/8139
#device         sf              # Adaptec AIC-6915 (``Starfire'')
#device         sis             # Silicon Integrated Systems SiS 900/SiS 7016
#device         sk              # SysKonnect SK-984x & SK-982x gigabit Ethernet
#device         ste             # Sundance ST201 (D-Link DFE-550TX)
#device         ti              # Alteon Networks Tigon I/II gigabit Ethernet
#device         tl              # Texas Instruments ThunderLAN
#device         tx              # SMC EtherPower II (83c170 ``EPIC'')
#device         vge             # VIA VT612x gigabit Ethernet
#device         vr              # VIA Rhine, Rhine II
#device         wb              # Winbond W89C840F
#device         xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')

# 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         ie              # EtherExpress 8/16, 3C507, StarLAN 10 etc.
#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         wlan            # 802.11 support
#device         an              # Aironet 4500/4800 802.11 wireless NICs.
#device         awi             # BayStack 660 and others
#device         ral             # Ralink Technology RT2500 wireless NICs.
#device         wi              # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
#device         wl              # Older non 802.11 Wavelan wireless NIC.

# Pseudo devices.
device          loop            # Network loopback
device          random          # Entropy device
device          ether           # Ethernet support
#device         sl              # Kernel SLIP
#device         ppp             # Kernel PPP
#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)

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
# Note that 'bpf' is required for DHCP.
device          bpf             # Berkeley packet filter

# USB support
#device         uhci            # UHCI PCI->USB interface
#device         ohci            # OHCI PCI->USB interface
#device         ehci            # EHCI PCI->USB interface (USB 2.0)
#device         usb             # USB Bus (required)
#device         udbp            # USB Double Bulk Pipe devices
#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         ural            # Ralink Technology RT2500USB wireless NICs
#device         urio            # Diamond Rio 500 MP3 player
#device         uscanner        # Scanners
# USB Ethernet, requires miibus
#device         aue             # ADMtek USB Ethernet
#device         axe             # ASIX Electronics USB Ethernet
#device         cdce            # Generic USB over Ethernet
#device         cue             # CATC USB Ethernet
#device         kue             # Kawasaki LSI USB Ethernet
#device         rue             # RealTek RTL8150 USB Ethernet

# FireWire support
#device         firewire        # FireWire bus code
#device         sbp             # SCSI over FireWire (Requires scbus and da)
#device         fwe             # Ethernet over FireWire (non-standard!)

# Omat saadot
options         INCLUDE_CONFIG_FILE
options         SMP             # Symmetric MultiProcessor Kernel
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