Date: Sun, 6 May 2007 02:20:43 GMT From: Wesha<freebsd-bugs2@wesha.name> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/112456: Kernel panics with sbdrop (2) Message-ID: <200705060220.l462Khak044028@www.freebsd.org> Resent-Message-ID: <200705060230.l462U46J046841@freefall.freebsd.org>
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>Number: 112456
>Category: kern
>Synopsis: Kernel panics with sbdrop (2)
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun May 06 02:30:04 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator: Wesha
>Release: 6.2-RELEASE
>Organization:
>Environment:
FreeBSD wesha.dyndns.org 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Wed Apr 18 15:40:21 CDT 2007 wesha@wesha.dyndns.org:/usr/src/sys/i386/compile/NIMBLE i386
>Description:
This might sound weird, but my server crashes after a friend with his laptop spends some time on one of my LANs (wireless or wired, doesn't matter). I attempted to isolate the problem, but I couldn't get any further: we changed network cards, used different hubs, etc, but to no avail: after his laptop spends a few hours on my network, my server panics.
Unread portion of the kernel message buffer:
panic: sbdrop
Uptime: 4d17h15m5s
Dumping 495 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 495MB (126704 pages) 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
#1 0xc05145c6 in boot (howto=260) at ../../../kern/kern_shutdown.c:409
#2 0xc051485c in panic (fmt=0xc06cb116 "sbdrop")
at ../../../kern/kern_shutdown.c:565
#3 0xc05515f0 in sbdrop_locked (sb=0xc39d822c, len=1412)
at ../../../kern/uipc_socket2.c:1103
#4 0xc05c29d1 in tcp_input (m=0xc3a15d00, off0=20)
at ../../../netinet/tcp_input.c:2149
#5 0xc05b9f0d in ip_input (m=0xc3a15d00) at ../../../netinet/ip_input.c:785
#6 0xc05ad333 in div_output (so=0xc3434c84, m=0xc3a15d00, sin=0xc46c58a0,
control=0x0) at ../../../netinet/ip_divert.c:390
#7 0xc05ad94b in div_send (so=0xc3434c84, flags=0, m=0x0, nam=0xc46c58a0,
control=0x0, td=0xc3390900) at ../../../netinet/ip_divert.c:515
#8 0xc054d6bb in sosend (so=0xc3434c84, addr=0xc46c58a0, uio=0xdceb1c40,
top=0xc3a15d00, control=0x0, flags=0, td=0xc3390900)
at ../../../kern/uipc_socket.c:836
#9 0xc0553059 in kern_sendit (td=0xc3390900, s=3, mp=0xdceb1cbc, flags=0,
control=0x0, segflg=UIO_USERSPACE) at ../../../kern/uipc_syscalls.c:772
#10 0xc0552f13 in sendit (td=0xc3390900, s=3, mp=0xdceb1cbc, flags=0)
at ../../../kern/uipc_syscalls.c:712
#11 0xc0553201 in sendto (td=0xc3390900, uap=0x0)
at ../../../kern/uipc_syscalls.c:830
#12 0xc068676b in syscall (frame=
{tf_fs = 59, tf_es = 59, tf_ds = 59, tf_edi = 1, tf_esi = 40, tf_ebp = -1078007224, tf_isp = -588571292, tf_ebx = -1078072784, tf_edx = -1078132736, tf_ecx = -1078072784, tf_eax = 133, tf_trapno = 0, tf_err = 2, tf_eip = 672329539, tf_cs = 51, tf_eflags = 662, tf_esp = -1078072932, tf_ss = 59})
at ../../../i386/i386/trap.c:983
#13 0xc067451f in Xint0x80_syscall () at ../../../i386/i386/exception.s:200
#14 0x00000033 in ?? ()
The code around the line where it panics:
while (len > 0) {
if (m == 0) {
if (next == 0)
panic("sbdrop");
Config:
machine i386
cpu I486_CPU
cpu I586_CPU
cpu I686_CPU
ident NIMBLE
# 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_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 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
#options AHC_REG_PRETTY_PRINT # Print register bitfields in debug
# # output. Adds ~128k to driver.
#device ahd # AHA39320/29320 and onboard AIC79xx devices
#options AHD_REG_PRETTY_PRINT # Print register bitfields in debug
# # output. Adds ~215k to driver.
#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 rr232x # Highpoint RocketRAID 232x
#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 mfi # LSI MegaRAID SAS
#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 kbdmux # keyboard multiplexer
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 bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
#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 stge # Sundance/Tamarack TC9021 gigabit Ethernet
#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
# Wireless NIC cards
device wlan # 802.11 support
device wlan_wep # 802.11 WEP support
device wlan_ccmp # 802.11 CCMP support
device wlan_tkip # 802.11 TKIP support
#device an # Aironet 4500/4800 802.11 wireless NICs.
device ath # Atheros pci/cardbus NIC's
device ath_hal # Atheros HAL (Hardware Access Layer)
#device ath_rate_sample # SampleRate tx rate control for ath
#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
###--disabled as requested by apcupsd
#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!)
# -----------------------
maxusers 0
device speaker
#device apm_saver
device snp
device sound
device snd_sbc
options IPFIREWALL
options IPFIREWALL_FORWARD
options IPDIVERT
options DUMMYNET
#device ath_rate_onoe #or ath_rate_amrr, whichever works better
device ath_rate_amrr
device uftdi
device ucom
options USB_DEBUG
options ACCEPT_FILTER_HTTP
>How-To-Repeat:
Unfortunately I don't know how to reproduce it anywhere else, but I certainly can reproduce it on my network over and over again. (And I'm willing to try patches when they're available).
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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