Date: Mon, 7 Apr 2003 14:07:57 -0700 From: Lamont Lucas <lamont@cluepon.com> To: stable@freebsd.org Subject: kmem_malloc crash with 4.8 Message-ID: <20030407210757.GE70647@clavin.cluepon.com>
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Hi. I've recently borrowed a SuperMicro 6013P-8 from a vendor
for the purposes of testing it to see if FreeBSD and these machines will
make a good replacements for our current flock of 11 Netra T1s running
solaris. Things are going very well with the tests, with the glaring
exception of the following crash:
While doing some significant disk operations: du, deleting a different
part of the tree and finally running "sync" the machine locked hard
with the following errors:
panic: kmem_malloc(4096): kmem_map too small: 230162432 total allocated
mp_lock = 03000001; cpuid = 3; lapic.id = 07000000
boot() called on cpu#3
Then "Synching disks" but no futher output is printed, nor is any
further progress made.
This machine was installed off of 4.8-release and was rebuilt under
-stable as of april 4th, late in the afternoon. The kernel conf file
is attached, but biggest changes I made were to enable SMP as well as
hyperthreading. It has 2 gigs of ram and 2 2.4 ghz xeon processors
capable of hyperthreading. The drive is a single <SEAGATE ST336753LC 0003>
controlled by a AIC7902 Ultra 320 scsi adapter.
I saw the previous discussion about the adaptec U320 controllers and
scott long's advice about "lower[ing] the tag depth to 32" using
camcontrol tags. I'm currently planning on removing hyperthread
support and rerunning some of my tests to see if I can reproduce the
error. I'm also going to try some bonnie tests. If I can
consistantly reproduce the error I'll report back, but I'd appreciate
knowing what additional debug info I can give back. I'm not clear
what would cause this type of error.
Attached are dmesg as well as the kernel config file.
Can anybody recommend any other steps to try and eliminate or fix
this problem?
--
- Lamont
"I am not an atomic playboy."
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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 4.8-RELEASE #1: Sat Apr 5 03:51:24 PST 2003
root@sm0test.shockwave.com:/usr/obj/usr/src/sys/SM6013P-8
Timecounter "i8254" frequency 1193182 Hz
CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2399.33-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf27 Stepping = 7
Features=0xbfebfbff<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,PBE>
Hyperthreading: 2 logical CPUs
real memory = 2146959360 (2096640K bytes)
avail memory = 2085826560 (2036940K bytes)
Programming 24 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
Programming 24 pins in IOAPIC #1
Programming 24 pins in IOAPIC #2
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 0, version: 0x00050014, at 0xfee00000
cpu1 (AP): apic id: 6, version: 0x00050014, at 0xfee00000
cpu2 (AP): apic id: 1, version: 0x00050014, at 0xfee00000
cpu3 (AP): apic id: 7, version: 0x00050014, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00178020, at 0xfec00000
io1 (APIC): apic id: 3, version: 0x00178020, at 0xfec80000
io2 (APIC): apic id: 4, version: 0x00178020, at 0xfec80400
Preloaded elf kernel "kernel" at 0xc052c000.
Pentium Pro MTRR support enabled
md0: Malloc disk
Using $PIR table, 24 entries at 0xc00fde40
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
IOAPIC #0 intpin 16 -> irq 2
IOAPIC #0 intpin 19 -> irq 10
IOAPIC #0 intpin 18 -> irq 11
pci0: <PCI bus> on pcib0
pcib1: <PCI to PCI bridge (vendor=8086 device=2543)> at device 2.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <unknown card> (vendor=0x8086, dev=0x1461) at 28.0
pcib2: <PCI to PCI bridge (vendor=8086 device=1460)> at device 29.0 on pci1
IOAPIC #2 intpin 6 -> irq 16
IOAPIC #2 intpin 7 -> irq 17
pci2: <PCI bus> on pcib2
em0: <Intel(R) PRO/1000 Network Connection, Version - 1.4.10> port 0x3000-0x303f mem 0xfc200000-0xfc21ffff irq 16 at device 3.0 on pci2
em0: Speed:100 Mbps Duplex:Full
em1: <Intel(R) PRO/1000 Network Connection, Version - 1.4.10> port 0x3040-0x307f mem 0xfc220000-0xfc23ffff irq 17 at device 3.1 on pci2
em1: Speed:N/A Duplex:N/A
pci1: <unknown card> (vendor=0x8086, dev=0x1461) at 30.0
pcib3: <PCI to PCI bridge (vendor=8086 device=1460)> at device 31.0 on pci1
IOAPIC #1 intpin 4 -> irq 18
IOAPIC #1 intpin 5 -> irq 19
pci3: <PCI bus> on pcib3
ahd0: <Adaptec AIC7902 Ultra320 SCSI adapter> port 0x4000-0x40ff,0x4400-0x44ff mem 0xfc300000-0xfc301fff irq 18 at device 2.0 on pci3
aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 101-133Mhz, 512 SCBs
ahd1: <Adaptec AIC7902 Ultra320 SCSI adapter> port 0x4800-0x48ff,0x4c00-0x4cff mem 0xfc302000-0xfc303fff irq 19 at device 2.1 on pci3
aic7902: Ultra320 Wide Channel B, SCSI Id=7, PCI-X 101-133Mhz, 512 SCBs
uhci0: <Intel 82801CA/CAM (ICH3) USB controller USB-A> port 0x2000-0x201f irq 2 at device 29.0 on pci0
usb0: <Intel 82801CA/CAM (ICH3) 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
uhci1: <Intel 82801CA/CAM (ICH3) USB controller USB-B> port 0x2020-0x203f irq 10 at device 29.1 on pci0
usb1: <Intel 82801CA/CAM (ICH3) 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 82801CA/CAM (ICH3) USB controller USB-C> port 0x2040-0x205f irq 11 at device 29.2 on pci0
usb2: <Intel 82801CA/CAM (ICH3) 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
pcib4: <Intel 82801BA/BAM (ICH2) Hub to PCI bridge> at device 30.0 on pci0
pci4: <PCI bus> on pcib4
pci4: <ATI Mach64-GR graphics accelerator> at 1.0 irq 2
isab0: <PCI to ISA bridge (vendor=8086 device=2480)> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH3 ATA100 controller> port 0x2060-0x206f,0x374-0x377,0x170-0x177,0x3f4-0x3f7,0x1f0-0x1f7 mem 0xfc000000-0xfc0003ff irq 0 at device 31.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <unknown card> (vendor=0x8086, dev=0x2483) at 31.3 irq 0
eisa0: <EISA bus> on motherboard
eisa0: unknown card @@@0000 (0x00000000) at slot 4
orm0: <Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xc8fff,0xdc000-0xdffff,0xe0000-0xe3fff 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
psm0: failed to get data.
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse, device ID 3
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 not found.
ahd1: PCI error Interrupt
>>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
ahd1: Dumping Card State at program address 0x3 Mode 0x33
Card was paused
HS_MAILBOX[0x0] INTCTL[0x0] SEQINTSTAT[0x0] SAVED_MODE[0x0]
DFFSTAT[0x30]:(CURRFIFO_0|FIFO0FREE|FIFO1FREE) SCSISIGI[0x0]:(P_DATAOUT)
SCSIPHASE[0x0] SCSIBUS[0x0] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE)
SCSISEQ0[0x0] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI)
SEQCTL0[0x10]:(FASTMODE) SEQINTCTL[0x0] SEQ_FLAGS[0x0]
SEQ_FLAGS2[0x0] SSTAT0[0x0] SSTAT1[0x8]:(BUSFREE)
SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO)
LQISTAT0[0x0] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0]
LQOSTAT1[0x0] LQOSTAT2[0x0]
SCB Count = 16 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0
qinstart = 0 qinfifonext = 0
QINFIFO:
WAITING_TID_QUEUES:
Pending list:
Total 0
Kernel Free SCB list: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Sequencer Complete DMA-inprog list:
Sequencer Complete list:
Sequencer DMA-Up and Complete list:
ahd1: FIFO0 Free, LONGJMP == 0x80ff, SCB 0x0, LJSCB 0xff00
SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
ahd1: FIFO1 Free, LONGJMP == 0x80ff, SCB 0x0, LJSCB 0xff00
SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
ahd1: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x42
ahd1: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO)
CCSCBCTL[0x0]
ahd1: REG0 == 0x3c36, SINDEX = 0x33, DINDEX = 0x0
ahd1: SCBPTR == 0x1ff, SCB_NEXT == 0xff00, SCB_NEXT2 == 0x0
CDB ff 1 0 0 0 0
STACK: 0x8 0x7 0x6 0x5 0x4 0x3 0x2e 0x1
>>>>>>>>>>>>>>>>>
ahd1: Signaled Target Abort
APIC_IO: Testing 8254 interrupt delivery
APIC_IO: routing 8254 via IOAPIC #0 intpin 2
SMP: AP CPU #2 Launched!
SMP: AP CPU #3 Launched!
acd0: CDROM <MATSHITA CR-177> at ata1-master PIO4
Waiting 15 seconds for SCSI devices to settle
SMP: AP CPU #1 Launched!
pass1 at ahd0 bus 0 target 6 lun 0
pass1: <SDR GEM318 0> Fixed Processor SCSI-2 device
pass1: 3.300MB/s transfers
da0 at ahd0 bus 0 target 0 lun 0
da0: <SEAGATE ST336753LC 0003> Fixed Direct Access SCSI-3 device
da0: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged Queueing Enabled
da0: 35003MB (71687372 512 byte sectors: 255H 63S/T 4462C)
Mounting root from ufs:/dev/da0s1a
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Content-Disposition: attachment; filename=HTKERNEL
#
# 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 ./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 1.246.2.51.2.2 2003/03/25 23:35:15 jhb Exp $
machine i386
cpu I686_CPU
ident SM6013P-8
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
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.
# To make an SMP kernel, the next two are needed
options SMP # Symmetric MultiProcessor Kernel
options APIC_IO # Symmetric (APIC) I/O
# To support HyperThreading, HTT is needed in addition to SMP and APIC_IO
options HTT # HyperThreading Technology
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 ahd # AHA39320/29320 and onboard AIC79xx devices
device amd # AMD 53C974 (Tekram DC-390(T))
device isp # Qlogic family
device mpt # LSI-Logic MPT/Fusion
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 iir # Intel Integrated RAID
device mly # Mylex AcceleRAID/eXtremeRAID
device ciss # Compaq SmartRAID 5* series
# RAID controllers
device aac # Adaptec FSA RAID, Dell PERC2/PERC3
#device aacp # SCSI passthrough for aac (requires CAM)
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
device agp # support several AGP chipsets
# 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 em # Intel PRO/1000 adapter Gigabit Ethernet Card (``Wiseman'')
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 xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
device bge # Broadcom BCM570x (``Tigon III'')
# ISA Ethernet NICs.
# 'device ed' requires 'device miibus'
device ed0 at isa? disable port 0x280 irq 10 iomem 0xd8000
device ex
device ep
device fe0 at isa? disable 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? disable port 0x300 irq 10 iomem 0xd0000
#device le0 at isa? disable port 0x300 irq 5 iomem 0xd0000
device lnc0 at isa? disable port 0x280 irq 10 drq 0
device cs0 at isa? disable port 0x300
device sn0 at isa? disable 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
--NzB8fVQJ5HfG6fxh--
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