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Date:      Sat, 24 May 2008 21:54:06 +0400 (MSD)
From:      "Lev A. Serebryakov" <lev@FreeBSD.org>
To:        FreeBSD-gnats-submit@FreeBSD.org
Subject:   bin/123962: gjournal (455Gb data, 8Gb journal), options INVARIANTS, files written via samba3, remove = panic ffs_truncate3
Message-ID:  <20080524175406.B547A13DF4B@ftp.translate.ru>
Resent-Message-ID: <200805241800.m4OI0Af2015018@freefall.freebsd.org>

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>Number:         123962
>Category:       bin
>Synopsis:       gjournal (455Gb data, 8Gb journal), options INVARIANTS, files written via samba3, remove = panic ffs_truncate3
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat May 24 18:00:10 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Lev A. Serebryakov
>Release:        FreeBSD 7.0-STABLE amd64
>Organization:
>Environment:
System: FreeBSD blob.home.serebryakov.spb.ru 7.0-STABLE FreeBSD 7.0-STABLE #0: Sat May 24 17:25:59 MSD 2008 lev@blob.home.serebryakov.spb.ru:/usr/obj/usr/src/sys/BLOB amd64

================================ KERNEL CONFIG
cpu		HAMMER
ident		BLOB

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

options		DDB
options		KDB
options		KDB_UNATTENDED
options		INVARIANTS
options		INVARIANT_SUPPORT
options		WITNESS
options		DEBUG_MEMGUARD
options		WITNESS_KDB
options		MUTEX_DEBUG

options 	SCHED_ULE		# ULE scheduler
options 	PREEMPTION		# Enable kernel thread preemption
options 	INET			# InterNETworking
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		UFS_GJOURNAL	# Enable gjournal-based UFS journaling
options 	MD_ROOT			# MD is a potential root device
options 	NFSCLIENT		# Network Filesystem Client
options 	NFSSERVER		# Network Filesystem Server
options 	NFSLOCKD		# Network Lock Manager
options 	PROCFS			# Process filesystem (requires PSEUDOFS)
options 	PSEUDOFS		# Pseudo-filesystem framework
options 	GEOM_LABEL		# Provides labelization
options 	COMPAT_43TTY		# BSD 4.3 TTY compat [KEEP THIS!]
options 	COMPAT_IA32		# Compatible with i386 binaries
options 	COMPAT_FREEBSD4		# Compatible with FreeBSD4
options 	COMPAT_FREEBSD5		# Compatible with FreeBSD5
options 	COMPAT_FREEBSD6		# Compatible with FreeBSD6
options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
options 	KTRACE			# ktrace(1) support
options 	STACK			# stack(9) 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.
options 	STOP_NMI		# Stop CPUS using NMI instead of IPI
options 	AUDIT			# Security event auditing

# Make an SMP-capable kernel by default
options 	SMP			# Symmetric MultiProcessor Kernel

# CPU frequency control
device		cpufreq
device		coretemp

device		smb
device		smbus
device		ichsmb

device		iicbus
device		iicsmb
device		iic

# Bus support.
device		acpi
device		pci

# ATA and ATAPI devices
device		ata
device		atadisk		# ATA disk drives
options 	ATA_STATIC_ID	# Static device numbering

# 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

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

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

# Parallel port
device		ppc
device		ppbus		# Parallel port bus (required)

device		em		# Intel PRO/1000 adapter Gigabit Ethernet Card

# Pseudo devices.
device		loop		# Network loopback
device		random		# Entropy device
device		ether		# Ethernet support
device		tun		# Packet tunnel.
device		pty		# Pseudo-ttys (telnet etc)
device		md		# Memory "disks"
device		firmware	# firmware assist module

# 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		ehci		# EHCI PCI->USB interface (USB 2.0)
device		usb		# USB Bus (required)

# FireWire support
device		firewire	# FireWire bus code
================================ KERNEL CONFIG

=================================== dmesg.boot
Copyright (c) 1992-2008 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 7.0-STABLE #0: Sat May 24 17:25:59 MSD 2008
    lev@blob.home.serebryakov.spb.ru:/usr/obj/usr/src/sys/BLOB
WARNING: WITNESS option enabled, expect reduced performance.
MEMGUARD DEBUGGING ALLOCATOR INITIALIZED:
	MEMGUARD map base: 0xffffffff80a22000
	MEMGUARD map limit: 0xffffffff83223000
	MEMGUARD map size: 41947136 (Bytes)
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Core(TM)2 Duo CPU     E4500  @ 2.20GHz (2200.10-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x6fd  Stepping = 13
  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>
  Features2=0xe39d<SSE3,RSVD2,MON,DS_CPL,EST,TM2,SSSE3,CX16,xTPR,PDCM>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  Cores per package: 2
usable memory = 4217020416 (4021 MB)
avail memory  = 4057751552 (3869 MB)
ACPI APIC Table: <A_M_I_ OEMAPIC >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
WITNESS: spin lock intrcnt not in order list
ioapic0 <Version 2.0> irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0: <A_M_I_ OEMXSDT> on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
acpi0: reservation of 0, a0000 (3) failed
acpi0: reservation of 100000, cfd00000 (3) failed
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 900
cpu0: <ACPI CPU> on acpi0
ACPI Warning (tbutils-0243): Incorrect checksum in table [OEMB] -  51, should be 4C [20070320]
coretemp0: <CPU On-Die Thermal Sensors> on cpu0
est0: <Enhanced SpeedStep Frequency Control> on cpu0
est0: Setting 2200 MHz
p4tcc0: <CPU Frequency Thermal Control> on cpu0
cpu1: <ACPI CPU> on acpi0
coretemp1: <CPU On-Die Thermal Sensors> on cpu1
est1: <Enhanced SpeedStep Frequency Control> on cpu1
est1: Setting 2200 MHz
p4tcc1: <CPU Frequency Thermal Control> on cpu1
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
vgapci0: <VGA-compatible display> port 0xec00-0xec07 mem 0xfea80000-0xfeafffff,0xd0000000-0xdfffffff,0xfe900000-0xfe9fffff irq 16 at device 2.0 on pci0
pci0: <simple comms> at device 3.0 (no driver attached)
em0: <Intel(R) PRO/1000 Network Connection 6.9.5> port 0xe880-0xe89f mem 0xfea40000-0xfea5ffff,0xfea7a000-0xfea7afff irq 20 at device 25.0 on pci0
em0: [FILTER]
em0: Ethernet address: 00:1e:8c:75:03:0d
uhci0: <UHCI (generic) USB controller> port 0xe400-0xe41f irq 16 at device 26.0 on pci0
uhci0: [GIANT-LOCKED]
uhci0: [ITHREAD]
usb0: <UHCI (generic) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
uhub0: 2 ports with 2 removable, self powered
uhci1: <UHCI (generic) USB controller> port 0xe480-0xe49f irq 21 at device 26.1 on pci0
uhci1: [GIANT-LOCKED]
uhci1: [ITHREAD]
usb1: <UHCI (generic) USB controller> on uhci1
usb1: USB revision 1.0
uhub1: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
uhub1: 2 ports with 2 removable, self powered
uhci2: <UHCI (generic) USB controller> port 0xe800-0xe81f irq 18 at device 26.2 on pci0
uhci2: [GIANT-LOCKED]
uhci2: [ITHREAD]
usb2: <UHCI (generic) USB controller> on uhci2
usb2: USB revision 1.0
uhub2: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb2
uhub2: 2 ports with 2 removable, self powered
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xfea7b800-0xfea7bbff irq 18 at device 26.7 on pci0
ehci0: [GIANT-LOCKED]
ehci0: [ITHREAD]
usb3: EHCI version 1.0
usb3: companion controllers, 2 ports each: usb0 usb1 usb2
usb3: <EHCI (generic) USB 2.0 controller> on ehci0
usb3: USB revision 2.0
uhub3: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb3
uhub3: 6 ports with 6 removable, self powered
uhci3: <UHCI (generic) USB controller> port 0xdc00-0xdc1f irq 23 at device 29.0 on pci0
uhci3: [GIANT-LOCKED]
uhci3: [ITHREAD]
usb4: <UHCI (generic) USB controller> on uhci3
usb4: USB revision 1.0
uhub4: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb4
uhub4: 2 ports with 2 removable, self powered
uhci4: <UHCI (generic) USB controller> port 0xe000-0xe01f irq 19 at device 29.1 on pci0
uhci4: [GIANT-LOCKED]
uhci4: [ITHREAD]
usb5: <UHCI (generic) USB controller> on uhci4
usb5: USB revision 1.0
uhub5: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb5
uhub5: 2 ports with 2 removable, self powered
uhci5: <UHCI (generic) USB controller> port 0xe080-0xe09f irq 18 at device 29.2 on pci0
uhci5: [GIANT-LOCKED]
uhci5: [ITHREAD]
usb6: <UHCI (generic) USB controller> on uhci5
usb6: USB revision 1.0
uhub6: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb6
uhub6: 2 ports with 2 removable, self powered
ehci1: <EHCI (generic) USB 2.0 controller> mem 0xfea7b400-0xfea7b7ff irq 23 at device 29.7 on pci0
ehci1: [GIANT-LOCKED]
ehci1: [ITHREAD]
usb7: EHCI version 1.0
usb7: companion controllers, 2 ports each: usb4 usb5 usb6
usb7: <EHCI (generic) USB 2.0 controller> on ehci1
usb7: USB revision 2.0
uhub7: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb7
uhub7: 6 ports with 6 removable, self powered
pcib1: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci1: <ACPI PCI bus> on pcib1
fwohci0: <Lucent FW322/323> mem 0xfebff000-0xfebfffff irq 20 at device 2.0 on pci1
fwohci0: [FILTER]
fwohci0: OHCI version 1.0 (ROM=1)
fwohci0: No. of Isochronous channels is 8.
fwohci0: EUI64 00:1e:8c:00:00:1a:5f:da
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
fwohci0: Initiate bus reset
fwohci0: BUS reset
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel AHCI controller> port 0xd800-0xd807,0xd480-0xd483,0xd400-0xd407,0xd080-0xd083,0xd000-0xd01f mem 0xfea79800-0xfea79fff irq 22 at device 31.2 on pci0
atapci0: [ITHREAD]
atapci0: AHCI Version 01.20 controller with 6 ports detected
ata2: <ATA channel 0> on atapci0
ata2: [ITHREAD]
ata3: <ATA channel 1> on atapci0
ata3: [ITHREAD]
ata4: <ATA channel 2> on atapci0
ata4: [ITHREAD]
ata5: <ATA channel 3> on atapci0
ata5: [ITHREAD]
ata6: <ATA channel 4> on atapci0
ata6: [ITHREAD]
ata7: <ATA channel 5> on atapci0
ata7: [ITHREAD]
ichsmb0: <SMBus controller> port 0x400-0x41f mem 0xfea7b000-0xfea7b0ff irq 18 at device 31.3 on pci0
ichsmb0: [GIANT-LOCKED]
ichsmb0: [ITHREAD]
smbus0: <System Management Bus> on ichsmb0
smb0: <SMBus generic I/O> on smbus0
pci0: <dasp> at device 31.6 (no driver attached)
acpi_button0: <Power Button> on acpi0
ppc0: <Parallel port> port 0x378-0x37f,0x778-0x77f irq 7 drq 3 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppbus0: <Parallel port bus> on ppc0
ppbus0: [ITHREAD]
ppc0: [GIANT-LOCKED]
ppc0: [ITHREAD]
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio0: [FILTER]
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
orm0: <ISA Option ROM> at iomem 0xcb800-0xcc7ff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounters tick every 1.000 msec
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
ad4: 305245MB <SAMSUNG HD321KJ CP100-10> at ata2-master SATA300
ad6: 476940MB <WDC WD5000AAKS-00YGA0 12.01C02> at ata3-master SATA300
ad10: 476940MB <WDC WD5000AAKS-00YGA0 12.01C02> at ata5-master SATA300
ad12: 476940MB <WDC WD5000AAKS-00YGA0 12.01C02> at ata6-master SATA300
ad14: 476940MB <WDC WD5000AAKS-00YGA0 12.01C02> at ata7-master SATA300
SMP: AP CPU #1 Launched!
WARNING: WITNESS option enabled, expect reduced performance.
Trying to mount root from ufs:/dev/ad4s1a
WARNING: / was not properly dismounted
WARNING: /tmp was not properly dismounted
WARNING: /usr was not properly dismounted
WARNING: /var was not properly dismounted
/var: mount pending error: blocks 12 files 1
=================================== dmesg.boot

>Description:

  Kernel is prepared to hunt bugs: invariants, witness, etc. is enables (see kernel config).

  gjournal created on raw 500Gb disk with 8Gb journal on partition of system disk.
  Filesystem with default options is created on jourrnalled volume (-J is used, of course).
  New filesystem is mounted as /usr/home/storage
  /usr/home storage is shared with samba3 from ports (default options) as R/W.
  1-8Gb files (16Mb each) copied from worksation to share.
  `rm *' is issued locally (deleting via samba "works" too), and `ffs_truncate3' invariant is triggered!
  
  Copying files from local filesystems doesn't trigger bug.
  
  100% reproducable.

>How-To-Repeat:
Script started on Sat May 24 21:21:31 2008
blob# kldstat
Id Refs Address            Size     Name
 1    1 0xffffffff80100000 640258   kernel
blob# gjournal load
blob# gjournal label /dev/ad6 /dev/ad2s1g 
blob# gjournal status
       Name  Status  Components
ad6.journal     N/A  ad6
blob# gjournal list
Geom name: gjournal 1954268551
ID: 1954268551
Providers:
1. Name: ad6.journal
   Mediasize: 500107861504 (466G)
   Sectorsize: 512
   Mode: r0w0e0
Consumers:
1. Name: ad6
   Mediasize: 500107862016 (466G)
   Sectorsize: 512
   Mode: r1w1e1
   Role: Data
2. Name: ad4s1g
   Mediasize: 8590787584 (8.0G)
   Sectorsize: 512
   Mode: r1w1e1
   Jend: 8590787072
   Jstart: 0
   Role: Journal
blob#newfs -O2 -J /dev/ad6.journal
/dev/ad6.journal: 476940.0MB (976773164 sectors) block size 16384, fragment size 2048
	using 2597 cylinder groups of 183.72MB, 11758 blks, 23552 inodes.
super-block backups (for fsck -b #) at:
 160, 376416, 752672, 1128928, 1505184, 1881440, 2257696, 2633952, 3010208, 3386464, 3762720, 4138976, 4515232, 4891488, 5267744, 5644000, 6020256, 6396512, 6772768, 7149024,
[...SKIPPED...]
 970364384, 970740640, 971116896, 971493152, 971869408, 972245664, 972621920, 972998176, 973374432, 973750688, 974126944, 974503200, 974879456, 975255712, 975631968, 976008224,
 976384480, 976760736
blob# gjournal sync
blob# mount /dev/ad6.journal /usr/home/storage
blob# cd /usr/home/storage
blob# ls
.snap
blob# df -h
Filesystem            Size    Used   Avail Capacity  Mounted on
/dev/ad4s1a           989M    567M    343M    62%    /
devfs                 1.0K    1.0K      0B   100%    /dev
/dev/ad4s1e           989M     16K    910M     0%    /tmp
/dev/ad4s1f           267G    5.7G    240G     2%    /usr
/dev/ad4s1d           7.7G    482M    6.7G     7%    /var
gateway:/usr/ports     68G     62G    490M    99%    /usr/ports
/dev/ad6.journal      451G    4.0K    415G     0%    /usr/home/storage
[...FILES ARE COPIED HERE...]
blob# ls
_IGP0006.DNG    _IGP0015.DNG    _IGP0036.DNG    _IGP0064.DNG    _IGP0070.DNG    _IGP0077.DNG    _IGP0081.DNG    _IGP0095.DNG    _IGP0099.DNG    _IGP0111.DNG    _IGP0123.DNG
_IGP0008.DNG    _IGP0020.DNG    _IGP0061.DNG    _IGP0065.DNG    _IGP0071.DNG    _IGP0078.DNG    _IGP0082.DNG    _IGP0096.DNG    _IGP0100.DNG    _IGP0113.DNG
_IGP0010.DNG    _IGP0026.DNG    _IGP0062.DNG    _IGP0067.DNG    _IGP0072.DNG    _IGP0079.DNG    _IGP0083.DNG    _IGP0097.DNG    _IGP0104.DNG    _IGP0114.DNG
_IGP0014.DNG    _IGP0033.DNG    _IGP0063.DNG    _IGP0069.DNG    _IGP0076.DNG    _IGP0080.DNG    _IGP0084.DNG    _IGP0098.DNG    _IGP0108.DNG    _IGP0116.DNG
blob# rm *
panic: ffs_truncate3

================================ kernel backtrace
Unread portion of the kernel message buffer:
panic: ffs_truncate3
cpuid = 0
Uptime: 17m33s
Physical memory: 4021 MB
Dumping 474 MB: 459 443 427 411 395 379 363 347 331 315 299 283 267 251 235 219 203 187 171 155 139 123 107 91 75 59 43 27 11

Reading symbols from /boot/kernel/geom_raid5.ko...Reading symbols from /boot/kernel/geom_raid5.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/geom_raid5.ko
Reading symbols from /boot/kernel/geom_journal.ko...Reading symbols from /boot/kernel/geom_journal.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/geom_journal.ko
#0  doadump () at pcpu.h:194
194             __asm __volatile("movq %%gs:0,%0" : "=r" (td));
(kgdb) bt
#0  doadump () at pcpu.h:194
#1  0xffffffff8025bf68 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#2  0xffffffff8025c3ef in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:572
#3  0xffffffff8036efae in ffs_truncate (vp=0xffffff0007376000, length=0, flags=Variable "flags" is not available.
) at /usr/src/sys/ufs/ffs/ffs_inode.c:494
#4  0xffffffff8038a52f in ufs_inactive (ap=Variable "ap" is not available.
) at /usr/src/sys/ufs/ufs/ufs_inode.c:132
#5  0xffffffff802d4bce in vinactive (vp=0xffffff0007376000, td=0xffffff0004ede000) at vnode_if.h:796
#6  0xffffffff802d6f16 in vput (vp=0xffffff0007376000) at /usr/src/sys/kern/vfs_subr.c:2224
#7  0xffffffff802dc297 in kern_unlink (td=0xffffff0004ede000, path=0x90a550 <Address 0x90a550 out of bounds>, pathseg=UIO_USERSPACE) at /usr/src/sys/kern/vfs_syscalls.c:1713
#8  0xffffffff803d4c7f in syscall (frame=0xffffffffb1c38c70) at /usr/src/sys/amd64/amd64/trap.c:852
#9  0xffffffff803bbc2b in Xfast_syscall () at /usr/src/sys/amd64/amd64/exception.S:290
#10 0x0000000801152adc in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb)
================================ kernel backtrace

>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:



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