FreeBSD 6.0 Beta3 LOR (UMA lock/system map)

Patrick Dung patrick_dkt at
Sun Sep 4 06:39:05 PDT 2005

Below is the log:

Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993,
	The Regents of the University of California. All rights reserved.
FreeBSD 6.0-BETA3 #0: Mon Aug 22 22:59:46 UTC 2005
    root at
WARNING: WITNESS option enabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel Pentium III (730.81-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x683  Stepping = 3
real memory  = 1073676288 (1023 MB)
avail memory = 1041616896 (993 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
ioapic0 <Version 1.1> irqs 0-23 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <AMIINT VIA_694X> on motherboard
acpi0: Power Button (fixed)
pci_link0: <ACPI PCI Link LNKA> irq 11 on acpi0
pci_link1: <ACPI PCI Link LNKB> irq 9 on acpi0
pci_link2: <ACPI PCI Link LNKC> irq 5 on acpi0
pci_link3: <ACPI PCI Link LNKD> irq 10 on acpi0
Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <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
agp0: <VIA 82C691 (Apollo Pro) host to PCI bridge> mem
0xe0000000-0xe7ffffff at device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 82C686A UDMA66 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 7.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
uhci0: <VIA 83C572 USB controller> port 0xd800-0xd81f irq 10 at device
7.2 on pci0
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
pci0: <serial bus, SMBus> at device 7.4 (no driver attached)
dc0: <Intel 21143 10/100BaseTX> port 0xd400-0xd47f mem
0xdfffff80-0xdfffffff irq 17 at device 9.0 on pci0
miibus0: <MII bus> on dc0
dcphy0: <Intel 21143 NWAY media interface> on miibus0
dcphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
dc0: Ethernet address: 08:00:2b:c4:d5:55
dc0: if_start running deferred for Giant
bge0: <Broadcom BCM5703 Gigabit Ethernet, ASIC rev. 0x1002> mem
0xdffe0000-0xdffeffff irq 18 at device 10.0 on pci0
miibus1: <MII bus> on bge0
brgphy0: <BCM5703 10/100/1000baseTX PHY> on miibus1
brgphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
bge0: Ethernet address: 00:10:18:06:56:9c
pci0: <mass storage, SCSI> at device 11.0 (no driver attached)
pci0: <processor> at device 12.0 (no driver attached)
twe0: <3ware Storage Controller. Driver version> port
0xd000-0xd00f mem 0xdf000000-0xdf7fffff irq 17 at device 13.0 on pci0
twe0: 4 ports, Firmware FE7X, BIOS BE7X
pci0: <multimedia, audio> at device 14.0 (no driver attached)
acpi_button1: <Sleep Button> on acpi0
acpi_tz0: <Thermal Zone> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
fdc0: <floppy drive controller> port 0x3f2-0x3f5,0x3f7 irq 6 drq 2 on
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: 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 16/16/8 bytes threshold
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xccfff,0xcd000-0xcdfff on
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
ums0: vendor 0x04b4 PS/2+USB Mouse, rev 1.00/0.01, addr 2, iclass 3/1
ums0: 3 buttons and Z dir.
Timecounters tick every 1.000 msec
acd0: DVDR <PLEXTOR DVDR PX-716A/1.08> at ata0-master UDMA66
acd1: CDRW <TDK CDRW4800B/S7S9> at ata1-master UDMA33
twed0: <Unit 0, RAID10, Normal> on twe0
twed0: 152636MB (312598784 sectors)
SMP: AP CPU #1 Launched!
Trying to mount root from ufs:/dev/twed0s3a
dc0: watchdog timeout
bge0: link state changed to UP
bge0: link state changed to DOWN
bge0: link state changed to UP
lock order reversal
 1st 0xc097ca00 UMA lock (UMA lock) @ /usr/src/sys/vm/uma_core.c:1494
 2nd 0xc1060144 system map (system map) @ /usr/src/sys/vm/vm_kern.c:295
KDB: stack backtrace:
kdb_backtrace(0,ffffffff,c0931ab8,c0931bf8,c08bc1c4) at
witness_checkorder(c1060144,9,c0872597,127) at witness_checkorder+0x564
_mtx_lock_flags(c1060144,0,c0872597,127) at _mtx_lock_flags+0x5b
_vm_map_lock(c10600c0,c0872597,127) at _vm_map_lock+0x26
kmem_malloc(c10600c0,1000,1,e508dba4,c077f60d) at kmem_malloc+0x32
page_alloc(c104a960,1000,e508db97,1,c0653530) at page_alloc+0x1a
slab_zalloc(c104a960,1,c104a9a8,c104a960,c10491c8) at slab_zalloc+0xa1
uma_zone_slab(c104a960,1,1,10,32db) at uma_zone_slab+0xe8
uma_zalloc_bucket(c104a960,1) at uma_zalloc_bucket+0x12c
uma_zalloc_arg(c104a960,0,1) at uma_zalloc_arg+0x2dc
malloc(800,c08f6a60,1,109,c1044460) at malloc+0xae
hash_alloc(e508dc74,c1044468,0,c0871850,1ab) at hash_alloc+0x29
zone_timeout(c1042b40) at zone_timeout+0x7e
zone_foreach(c077ee44,e508dce8,c063d33f,0,c077ee10) at
uma_timeout(0) at uma_timeout+0x12
softclock(0) at softclock+0x1e7
ithread_loop(c232f500,e508dd38,c232f500,c061f924,0) at
fork_exit(c061f924,c232f500,e508dd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xe508dd6c, ebp = 0 ---

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