Fw: LOR:vfs_bio.c and ufs_dirhash.c

--- On Mon, 15/6/09, Ivailo Bonev <ibb27_at_yahoo.co.uk> wrote:

> From: Ivailo Bonev <ibb27_at_yahoo.co.uk>
> Subject: LOR:vfs_bio.c and ufs_dirhash.c
> To: freebsd-current_at_freebsd.org
> Date: Monday, 15 June, 2009, 7:20 PM
> I've installed 8-CURRENT on my HP
> laptop, snapshot from pub.allbsd.org with HEAD sources from
> yesterday, but on first startup I see LOR. Everything works
> ok, though... 
> Here is log from messages:
> kernel: Copyright (c) 1992-2009 The FreeBSD Project.
> kernel: Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989,
> 1991, 1992, 1993, 1994
> kernel: The Regents of the University of California. All
> rights reserved.
> kernel: FreeBSD is a registered trademark of The FreeBSD
> Foundation.
> kernel: FreeBSD 8.0-HEAD-20090615-JPSNAP #0: Mon Jun 15
> 02:22:17 UTC 2009
> kernel: root_at_build-i386-fbsd-2.allbsd.org:/usr/obj/i386/usr/src/sys/GENERIC
> kernel: WARNING: WITNESS option enabled, expect reduced
> performance.
> kernel: Timecounter "i8254" frequency 1193182 Hz quality 0
> Jun 15 17:42:22 ibb kernel: CPU: Pentium(R) Dual-Core
> CPU       T4200  _at_ 2.00GHz
> (1995.25-MHz 686-class CPU)
> Jun 15 17:42:22 ibb kernel: Origin = "GenuineIntel" 
> Id = 0x1067a  Stepping = 10
> Jun 15 17:42:22 ibb kernel:
> 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>
> Jun 15 17:42:22 ibb kernel:
> Features2=0x400e39d<SSE3,DTES64,MON,DS_CPL,EST,TM2,SSSE3,CX16,xTPR,PDCM,XSAVE>
> Jun 15 17:42:22 ibb kernel: AMD
> Features=0x20100000<NX,LM>
> Jun 15 17:42:22 ibb kernel: AMD Features2=0x1<LAHF>
> Jun 15 17:42:22 ibb kernel: TSC: P-state invariant
> Jun 15 17:42:22 ibb kernel: real memory  = 2147483648
> (2048 MB)
> Jun 15 17:42:22 ibb kernel: avail memory = 2083385344 (1986
> MB)
> Jun 15 17:42:22 ibb kernel: ACPI APIC Table: <HPQOEM
> 30E9    >
> Jun 15 17:42:22 ibb kernel: FreeBSD/SMP: Multiprocessor
> System Detected: 2 CPUs
> Jun 15 17:42:22 ibb kernel: FreeBSD/SMP: 1 package(s) x 2
> core(s)
> Jun 15 17:42:22 ibb kernel: cpu0 (BSP): APIC ID:  0
> Jun 15 17:42:22 ibb kernel: cpu1 (AP): APIC ID:  1
> Jun 15 17:42:22 ibb kernel: ioapic0: Changing APIC ID to 1
> Jun 15 17:42:22 ibb kernel: ioapic0 <Version 2.0>
> irqs 0-23 on motherboard
> Jun 15 17:42:22 ibb kernel: kbd1 at kbdmux0
> Jun 15 17:42:22 ibb kernel: acpi0: <HPQOEM SLIC-MPC>
> on motherboard
> Jun 15 17:42:22 ibb kernel: acpi0: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: acpi0: Power Button (fixed)
> Jun 15 17:42:22 ibb kernel: Timecounter "HPET" frequency
> 14318180 Hz quality 900
> Jun 15 17:42:22 ibb kernel: Timecounter "ACPI-fast"
> frequency 3579545 Hz quality 1000
> Jun 15 17:42:22 ibb kernel: acpi_timer0: <24-bit timer
> at 3.579545MHz> port 0x408-0x40b on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_ec0: <Embedded
> Controller: GPE 0x16> port 0x62,0x66 on acpi0
> Jun 15 17:42:22 ibb kernel: pcib0: <ACPI Host-PCI
> bridge> port 0xcf8-0xcff on acpi0
> Jun 15 17:42:22 ibb kernel: pci0: <ACPI PCI bus> on
> pcib0
> Jun 15 17:42:22 ibb kernel: pcib1: <ACPI PCI-PCI
> bridge> irq 16 at device 1.0 on pci0
> Jun 15 17:42:22 ibb kernel: pci1: <ACPI PCI bus> on
> pcib1
> Jun 15 17:42:22 ibb kernel: vgapci0: <VGA-compatible
> display> port 0x7000-0x70ff mem
> 0x80000000-0x8fffffff,0x98400000-0x9840ffff irq 16 at device
> 0.0 on pci1
> Jun 15 17:42:22 ibb kernel: uhci0: <Intel 82801I (ICH9)
> USB controller> port 0x80c0-0x80df irq 16 at device 26.0
> on pci0
> Jun 15 17:42:22 ibb kernel: uhci0: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: uhci0: LegSup = 0x0f00
> Jun 15 17:42:22 ibb kernel: usbus0: <Intel 82801I (ICH9)
> USB controller> on uhci0
> Jun 15 17:42:22 ibb kernel: uhci1: <Intel 82801I (ICH9)
> USB controller> port 0x80a0-0x80bf irq 17 at device 26.1
> on pci0
> Jun 15 17:42:22 ibb kernel: uhci1: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: uhci1: LegSup = 0x0f00
> Jun 15 17:42:22 ibb kernel: usbus1: <Intel 82801I (ICH9)
> USB controller> on uhci1
> Jun 15 17:42:22 ibb kernel: uhci2: <Intel 82801I (ICH9)
> USB controller> port 0x8080-0x809f irq 18 at device 26.2
> on pci0
> Jun 15 17:42:22 ibb kernel: uhci2: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: uhci2: LegSup = 0x0f00
> Jun 15 17:42:22 ibb kernel: usbus2: <Intel 82801I (ICH9)
> USB controller> on uhci2
> Jun 15 17:42:22 ibb kernel: ehci0: <Intel 82801I (ICH9)
> USB 2.0 controller> mem 0x98504c00-0x98504fff irq 19 at
> device 26.7 on pci0
> Jun 15 17:42:22 ibb kernel: ehci0: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: usbus3: EHCI version 1.0
> Jun 15 17:42:22 ibb kernel: usbus3: <Intel 82801I (ICH9)
> USB 2.0 controller> on ehci0
> Jun 15 17:42:22 ibb kernel: pci0: <multimedia, HDA>
> at device 27.0 (no driver attached)
> Jun 15 17:42:22 ibb kernel: pcib2: <ACPI PCI-PCI
> bridge> irq 16 at device 28.0 on pci0
> Jun 15 17:42:22 ibb kernel: pci2: <ACPI PCI bus> on
> pcib2
> Jun 15 17:42:22 ibb kernel: pcib3: <ACPI PCI-PCI
> bridge> irq 17 at device 28.1 on pci0
> Jun 15 17:42:22 ibb kernel: pci3: <ACPI PCI bus> on
> pcib3
> Jun 15 17:42:22 ibb kernel: pci3: <network> at device
> 0.0 (no driver attached)
> Jun 15 17:42:22 ibb kernel: pcib4: <ACPI PCI-PCI
> bridge> irq 18 at device 28.2 on pci0
> Jun 15 17:42:22 ibb kernel: pci4: <ACPI PCI bus> on
> pcib4
> Jun 15 17:42:22 ibb kernel: pcib5: <ACPI PCI-PCI
> bridge> irq 16 at device 28.4 on pci0
> Jun 15 17:42:22 ibb kernel: pci69: <ACPI PCI bus> on
> pcib5
> Jun 15 17:42:22 ibb kernel: pcib6: <ACPI PCI-PCI
> bridge> irq 17 at device 28.5 on pci0
> Jun 15 17:42:22 ibb kernel: pci134: <ACPI PCI bus> on
> pcib6
> Jun 15 17:42:22 ibb kernel: mskc0: <Marvell Yukon
> 88E8072 Gigabit Ethernet> port 0x2000-0x20ff mem
> 0x90100000-0x90103fff irq 17 at device 0.0 on pci134
> Jun 15 17:42:22 ibb kernel: msk0: <Marvell Technology
> Group Ltd. Yukon EX Id 0xb5 Rev 0x02> on mskc0
> Jun 15 17:42:22 ibb kernel: msk0: Ethernet address:
> 00:24:81:47:09:c0
> Jun 15 17:42:22 ibb kernel: miibus0: <MII bus> on
> msk0
> Jun 15 17:42:22 ibb kernel: e1000phy0: <Marvell 88E1149
> Gigabit PHY> PHY 0 on miibus0
> Jun 15 17:42:22 ibb kernel: e1000phy0:  10baseT,
> 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT,
> 1000baseT-FDX, auto
> Jun 15 17:42:22 ibb kernel: mskc0: [FILTER]
> Jun 15 17:42:22 ibb kernel: uhci3: <Intel 82801I (ICH9)
> USB controller> port 0x8060-0x807f irq 20 at device 29.0
> on pci0
> Jun 15 17:42:22 ibb kernel: uhci3: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: uhci3: LegSup = 0x0f00
> Jun 15 17:42:22 ibb kernel: usbus4: <Intel 82801I (ICH9)
> USB controller> on uhci3
> Jun 15 17:42:22 ibb kernel: uhci4: <Intel 82801I (ICH9)
> USB controller> port 0x8040-0x805f irq 22 at device 29.1
> on pci0
> Jun 15 17:42:22 ibb kernel: uhci4: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: uhci4: LegSup = 0x0f00
> Jun 15 17:42:22 ibb kernel: usbus5: <Intel 82801I (ICH9)
> USB controller> on uhci4
> Jun 15 17:42:22 ibb kernel: uhci5: <Intel 82801I (ICH9)
> USB controller> port 0x8020-0x803f irq 18 at device 29.2
> on pci0
> Jun 15 17:42:22 ibb kernel: uhci5: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: uhci5: LegSup = 0x0f00
> Jun 15 17:42:22 ibb kernel: usbus6: <Intel 82801I (ICH9)
> USB controller> on uhci5
> Jun 15 17:42:22 ibb kernel: ehci1: <Intel 82801I (ICH9)
> USB 2.0 controller> mem 0x98504800-0x98504bff irq 20 at
> device 29.7 on pci0
> Jun 15 17:42:22 ibb kernel: ehci1: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: usbus7: EHCI version 1.0
> Jun 15 17:42:22 ibb kernel: usbus7: <Intel 82801I (ICH9)
> USB 2.0 controller> on ehci1
> Jun 15 17:42:22 ibb kernel: pcib7: <ACPI PCI-PCI
> bridge> at device 30.0 on pci0
> Jun 15 17:42:22 ibb kernel: pci135: <ACPI PCI bus> on
> pcib7
> Jun 15 17:42:22 ibb kernel: isab0: <PCI-ISA bridge>
> at device 31.0 on pci0
> Jun 15 17:42:22 ibb kernel: isa0: <ISA bus> on isab0
> Jun 15 17:42:22 ibb kernel: atapci0: <Intel AHCI
> controller> port
> 0x80e8-0x80ef,0x80f4-0x80f7,0x80e0-0x80e7,0x80f0-0x80f3,0x8000-0x801f
> mem 0x98504000-0x985047ff irq 21 at device 31.2 on pci0
> Jun 15 17:42:22 ibb kernel: atapci0: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: atapci0: AHCI v1.20 controller
> with 4 3Gbps ports, PM not supported
> Jun 15 17:42:22 ibb kernel: ata2: <ATA channel 0> on
> atapci0
> Jun 15 17:42:22 ibb kernel: ata2: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: ata3: <ATA channel 1> on
> atapci0
> Jun 15 17:42:22 ibb kernel: ata3: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: ata4: <ATA channel 5> on
> atapci0
> Jun 15 17:42:22 ibb kernel: ata4: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: battery0: <ACPI Control
> Method Battery> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_acad0: <AC Adapter>
> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_button0: <Sleep
> Button> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_lid0: <Control Method
> Lid Switch> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_tz0: <Thermal Zone>
> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_tz1: <Thermal Zone>
> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_tz1: _CRT value is absurd,
> ignored (256.0C)
> Jun 15 17:42:22 ibb kernel: acpi_tz2: <Thermal Zone>
> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_tz3: <Thermal Zone>
> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_tz4: <Thermal Zone>
> on acpi0
> Jun 15 17:42:22 ibb kernel: acpi_tz5: <Thermal Zone>
> on acpi0
> Jun 15 17:42:22 ibb kernel: atrtc0: <AT realtime
> clock> port 0x70-0x77 irq 8 on acpi0
> Jun 15 17:42:22 ibb kernel: atrtc0: Warning: Couldn't map
> I/O.
> Jun 15 17:42:22 ibb kernel: atkbdc0: <Keyboard
> controller (i8042)> port 0x60,0x64 irq 1 on acpi0
> Jun 15 17:42:22 ibb kernel: atkbd0: <AT Keyboard> irq
> 1 on atkbdc0
> Jun 15 17:42:22 ibb kernel: kbd0 at atkbd0
> Jun 15 17:42:22 ibb kernel: atkbd0: [GIANT-LOCKED]
> Jun 15 17:42:22 ibb kernel: atkbd0: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: psm0: <PS/2 Mouse> irq 12
> on atkbdc0
> Jun 15 17:42:22 ibb kernel: psm0: [GIANT-LOCKED]
> Jun 15 17:42:22 ibb kernel: psm0: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: psm0: model IntelliMouse,
> device ID 3
> Jun 15 17:42:22 ibb kernel: cpu0: <ACPI CPU> on
> acpi0
> Jun 15 17:42:22 ibb kernel: est0: <Enhanced SpeedStep
> Frequency Control> on cpu0
> Jun 15 17:42:22 ibb kernel: p4tcc0: <CPU Frequency
> Thermal Control> on cpu0
> Jun 15 17:42:22 ibb kernel: cpu1: <ACPI CPU> on
> acpi0
> Jun 15 17:42:22 ibb kernel: est1: <Enhanced SpeedStep
> Frequency Control> on cpu1
> Jun 15 17:42:22 ibb kernel: p4tcc1: <CPU Frequency
> Thermal Control> on cpu1
> Jun 15 17:42:22 ibb kernel: pmtimer0 on isa0
> Jun 15 17:42:22 ibb kernel: sc0: <System console> at
> flags 0x100 on isa0
> Jun 15 17:42:22 ibb kernel: sc0: VGA <16 virtual
> consoles, flags=0x300>
> Jun 15 17:42:22 ibb kernel: vga0: <Generic ISA VGA>
> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> Jun 15 17:42:22 ibb kernel: ata0 at port 0x1f0-0x1f7,0x3f6
> irq 14 on isa0
> Jun 15 17:42:22 ibb kernel: ata0: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: ata1 at port 0x170-0x177,0x376
> irq 15 on isa0
> Jun 15 17:42:22 ibb kernel: ata1: [ITHREAD]
> Jun 15 17:42:22 ibb kernel: Timecounters tick every 1.000
> msec
> Jun 15 17:42:22 ibb kernel: usbus1: 12Mbps Full Speed USB
> v1.0
> Jun 15 17:42:22 ibb kernel: usbus2: 12Mbps Full Speed USB
> v1.0
> Jun 15 17:42:22 ibb kernel: usbus3: 480Mbps High Speed USB
> v2.0
> Jun 15 17:42:22 ibb kernel: usbus4: 12Mbps Full Speed USB
> v1.0
> Jun 15 17:42:22 ibb kernel: usbus5: 12Mbps Full Speed USB
> v1.0
> Jun 15 17:42:22 ibb kernel: usbus6: 12Mbps Full Speed USB
> v1.0
> Jun 15 17:42:22 ibb kernel: usbus7: 480Mbps High Speed USB
> v2.0
> Jun 15 17:42:22 ibb kernel: usbus0: 12Mbps Full Speed USB
> v1.0
> Jun 15 17:42:22 ibb kernel: ugen1.1: <Intel> at
> usbus1
> Jun 15 17:42:22 ibb kernel: uhub0: <Intel UHCI root HUB,
> class 9/0, rev 1.00/1.00, addr 1> on usbus1
> Jun 15 17:42:22 ibb kernel: ugen2.1: <Intel> at
> usbus2
> Jun 15 17:42:22 ibb kernel: uhub1: <Intel UHCI root HUB,
> class 9/0, rev 1.00/1.00, addr 1> on usbus2
> Jun 15 17:42:22 ibb kernel: ugen3.1: <Intel> at
> usbus3
> Jun 15 17:42:22 ibb kernel: uhub2: <Intel EHCI root HUB,
> class 9/0, rev 2.00/1.00, addr 1> on usbus3
> Jun 15 17:42:22 ibb kernel: ugen4.1: <Intel> at
> usbus4
> Jun 15 17:42:22 ibb kernel: uhub3: <Intel UHCI root HUB,
> class 9/0, rev 1.00/1.00, addr 1> on usbus4
> Jun 15 17:42:22 ibb kernel: ugen5.1: <Intel> at
> usbus5
> Jun 15 17:42:22 ibb kernel: uhub4: <Intel UHCI root HUB,
> class 9/0, rev 1.00/1.00, addr 1> on usbus5
> Jun 15 17:42:22 ibb kernel: ugen6.1: <Intel> at
> usbus6
> Jun 15 17:42:22 ibb kernel: uhub5: <Intel UHCI root HUB,
> class 9/0, rev 1.00/1.00, addr 1> on usbus6
> Jun 15 17:42:22 ibb kernel: ugen7.1: <Intel> at
> usbus7
> Jun 15 17:42:22 ibb kernel: uhub6: <Intel EHCI root HUB,
> class 9/0, rev 2.00/1.00, addr 1> on usbus7
> Jun 15 17:42:22 ibb kernel: ugen0.1: <Intel> at
> usbus0
> Jun 15 17:42:22 ibb kernel: uhub7: <Intel UHCI root HUB,
> class 9/0, rev 1.00/1.00, addr 1> on usbus0
> Jun 15 17:42:22 ibb kernel: ad4: 238475MB <Hitachi
> HTS543225L9A300 FBEOC40F> at ata2-master SATA300
> Jun 15 17:42:22 ibb kernel: acpi_tz1: _CRT value is absurd,
> ignored (256.0C)
> Jun 15 17:42:22 ibb kernel: acd0: DVDR <Optiarc DVD RW
> AD-7561S/AH03> at ata3-master SATA150
> Jun 15 17:42:22 ibb kernel: SMP: AP CPU #1 Launched!
> Jun 15 17:42:22 ibb kernel: WARNING: WITNESS option
> enabled, expect reduced performance.
> Jun 15 17:42:22 ibb kernel: uhub0: 2 ports with 2
> removable, self powered
> Jun 15 17:42:22 ibb kernel: uhub1: 2 ports with 2
> removable, self powered
> Jun 15 17:42:22 ibb kernel: uhub3: 2 ports with 2
> removable, self powered
> Jun 15 17:42:22 ibb kernel: uhub4: 2 ports with 2
> removable, self powered
> Jun 15 17:42:22 ibb kernel: uhub5: 2 ports with 2
> removable, self powered
> Jun 15 17:42:22 ibb kernel: uhub7: 2 ports with 2
> removable, self powered
> Jun 15 17:42:22 ibb kernel: GEOM: ad4s2: geometry does not
> match label (255h,63s != 16h,63s).
> Jun 15 17:42:22 ibb kernel: Root mount waiting for: usbus7
> usbus3
> Jun 15 17:42:22 ibb last message repeated 2 times
> Jun 15 17:42:22 ibb kernel: uhub2: 6 ports with 6
> removable, self powered
> Jun 15 17:42:22 ibb kernel: uhub6: 6 ports with 6
> removable, self powered
> Jun 15 17:42:22 ibb kernel: ugen3.2: <Chicony
> Electronics Co., Ltd.> at usbus3
> Jun 15 17:42:22 ibb kernel: Trying to mount root from
> ufs:/dev/ad4s2a
> Jun 15 17:42:23 ibb kernel: msk0: link state changed to UP
> Jun 15 17:42:38 ibb login: ROOT LOGIN (root) ON ttyv0
> Jun 15 17:46:53 ibb kernel: lock order reversal:
> Jun 15 17:46:53 ibb kernel: 1st 0xd9537bb0 bufwait
> (bufwait) _at_ /usr/src/sys/kern/vfs_bio.c:2558
> Jun 15 17:46:53 ibb kernel: 2nd 0xc5efd000 dirhash
> (dirhash) _at_ /usr/src/sys/ufs/ufs/ufs_dirhash.c:285
> Jun 15 17:46:53 ibb kernel: KDB: stack backtrace:
> Jun 15 17:46:53 ibb kernel:
> db_trace_self_wrapper(c0c5e1c8,e813a87c,c08b15d5,c08a250b,c0c6100b,...)
> at db_trace_self_wrapper+0x26
> Jun 15 17:46:53 ibb kernel:
> kdb_backtrace(c08a250b,c0c6100b,c552acf0,c5530c00,e813a8d8,...)
> at kdb_backtrace+0x29
> Jun 15 17:46:53 ibb kernel:
> _witness_debugger(c0c6100b,c5efd000,c0c810bd,c5530c00,c0c80d56,...)
> at _witness_debugger+0x25
> Jun 15 17:46:53 ibb kernel:
> witness_checkorder(c5efd000,9,c0c80d56,11d,0,...) at
> witness_checkorder+0x839
> Jun 15 17:46:53 ibb kernel:
> _sx_xlock(c5efd000,0,c0c80d56,11d,c6015c3c,...) at
> _sx_xlock+0x85
> Jun 15 17:46:53 ibb kernel:
> ufsdirhash_acquire(d9537b50,da6db800,200,da6db81c,e813a9a8,...)
> at ufsdirhash_acquire+0x35
> Jun 15 17:46:53 ibb kernel:
> ufsdirhash_add(c6015c3c,e813aa20,81c,e813a994,e813a998,...)
> at ufsdirhash_add+0x13
> Jun 15 17:46:53 ibb kernel:
> ufs_direnter(c5ff596c,c6139218,e813aa20,e813ac04,d956c200,...)
> at ufs_direnter+0x729
> Jun 15 17:46:53 ibb kernel:
> ufs_mkdir(e813ac28,ead,0,0,e813ab70,...) at ufs_mkdir+0x897
> Jun 15 17:46:53 ibb kernel:
> VOP_MKDIR_APV(c0d5eec0,e813ac28,e813ac04,e813ab70,0,...) at
> VOP_MKDIR_APV+0xa5
> Jun 15 17:46:53 ibb kernel:
> kern_mkdirat(c5cda480,ffffff9c,28528f80,0,1ed,...) at
> kern_mkdirat+0x268
> Jun 15 17:46:53 ibb kernel:
> kern_mkdir(c5cda480,28528f80,0,1ed,e813ad2c,...) at
> kern_mkdir+0x2e
> Jun 15 17:46:53 ibb kernel:
> mkdir(c5cda480,e813acf8,8,c0c5e284,c0d3f240,...) at
> mkdir+0x29
> Jun 15 17:46:53 ibb kernel: syscall(e813ad38) at
> syscall+0x2a3
> Jun 15 17:46:53 ibb kernel: Xint0x80_syscall() at
> Xint0x80_syscall+0x20
> Jun 15 17:46:53 ibb kernel: --- syscall (136, FreeBSD
> ELF32, mkdir), eip = 0x283063c3, esp = 0xbf4f9d1c, ebp =
> 0xbf4f9d48 ---
> 
> Mail me, if I can help with anything else...
> 

More precisely, I see this LOR when I try to configure custom kernel with:
#config MYKERN