FC6-xen kernel panics (dom0) on boot after agpgart init

[George Shearer]

Hey All,

Attempting to run FC6-xen on my system. It's currently running 
2.6.20-1.2933.fc6.i686 happily. However, the XEN kernel panics on boot. 
I had to enable serial console in order to capture the dmesg for 
troubleshooting. I'd like your opinion of this output.

Looks to me like it has something to do with agpgart. This is on a 
Gigabyte GA-965P-DS3 motherboard (rev 1.0, bios F10), with a Conroe 
E6400 and 4GB DDR2-800. ICH8 is the main northbridge, however, there's 
also a JMB363 AHCI IDE controller as well.

A non-xen kernel agpgart section looks like this:
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected an Intel 965G Chipset.
agpgart: AGP aperture is 256M @ 0x0

However, as you will see, in the boot text below, the xen-kernel (dom0) 
seems to kernel panic right after this:
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected an Intel 965G Chipset.
BUG: unable to handle kernel NULL pointer dereference at virtual address 
00000008
 printing eip:
c04b81a0
.... cut



Thank you for your time.

 __  __            _____  ___   _____     ___    __       __
 \ \/ /___ _ __   |___ / / _ \ |___ /    / _ \  / _| ___ / /_
  \  // _ \ '_ \    |_ \| | | |  |_ \ __| | | || |_ / __| '_ \
  /  \  __/ | | |  ___) | |_| | ___) |__| |_| ||  _| (__| (_) |
 /_/\_\___|_| |_| |____(_)___(_)____/    \___(_)_|  \___|\___/

 http://www.cl.cam.ac.uk/netos/xen
 University of Cambridge Computer Laboratory

 Xen version 3.0.3-0-1.2933.fc6 (brewbuilder(a)build.redhat.com) (gcc 
version 4.1.1 20070105 (Red Hat
4.1.1-51)) Mon Mar 19 10:39:57 EDT 2007
 Latest ChangeSet: unavailable

(XEN) Command line: /boot/xen.gz-2.6.20-1.2933.fc6 noreboot com1=115200,8n1
(XEN) Physical RAM map:
(XEN)  0000000000000000 - 000000000009f800 (usable)
(XEN)  000000000009f800 - 00000000000a0000 (reserved)
(XEN)  00000000000f0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000cfee0000 (usable)
(XEN)  00000000cfee0000 - 00000000cfee3000 (ACPI NVS)
(XEN)  00000000cfee3000 - 00000000cfef0000 (ACPI data)
(XEN)  00000000cfef0000 - 00000000cff00000 (reserved)
(XEN)  00000000e0000000 - 00000000e4000000 (reserved)
(XEN)  00000000fec00000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 0000000130000000 (usable)
(XEN) System RAM: 4094MB (4192764kB)
(XEN) Xen heap: 9MB (10224kB)
(XEN) PAE enabled, limit: 16 GB
(XEN) found SMP MP-table at 000f5310
(XEN) DMI 2.4 present.
(XEN) Using APIC driver default
(XEN) ACPI: RSDP (v000 GBT                                   ) @ 0x000f6ca0
(XEN) ACPI: RSDT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 
0xcfee3040
(XEN) ACPI: FADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 
0xcfee30c0
(XEN) ACPI: HPET (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x00000098) @ 
0xcfee7cc0
(XEN) ACPI: MCFG (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 
0xcfee7d40
(XEN) ACPI: MADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 
0xcfee7bc0
(XEN) ACPI: SSDT (v001  PmRef  Cpu0Ist 0x00003000 INTL 0x20040311) @ 
0xcfee7dc0
(XEN) ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20040311) @ 
0xcfee8250
(XEN) ACPI: DSDT (v001 GBT    GBTUACPI 0x00001000 MSFT 0x0100000c) @ 
0x00000000
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
(XEN) Processor #0 6:15 APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
(XEN) Processor #1 6:15 APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
(XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
(XEN) ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
(XEN) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
(XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
(XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
(XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
(XEN) ACPI: IRQ0 used by override.
(XEN) ACPI: IRQ2 used by override.
(XEN) ACPI: IRQ9 used by override.
(XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
(XEN) ACPI: HPET id: 0x8086a201 base: 0xfed00000
(XEN) Using ACPI (MADT) for SMP configuration information
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Initializing CPU#0
(XEN) Detected 3200.037 MHz processor.
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: L2 cache: 2048K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 0
(XEN) VMXON is done
(XEN) Intel machine check architecture supported.
(XEN) Intel machine check reporting enabled on CPU#0.
(XEN) CPU0: Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz stepping 06
(XEN) Booting processor 1/1 eip 90000
(XEN) Initializing CPU#1
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: L2 cache: 2048K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 1
(XEN) VMXON is done
(XEN) Intel machine check architecture supported.
(XEN) Intel machine check reporting enabled on CPU#1.
(XEN) CPU1: Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz stepping 06
(XEN) Total of 2 processors activated.
(XEN) ENABLING IO-APIC IRQs
(XEN)  -> Using new ACK method
(XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
(XEN) checking TSC synchronization across 2 CPUs: passed.
(XEN) Platform timer is 14.318MHz HPET
(XEN) Brought up 2 CPUs
(XEN) Machine check exception polling timer started.
(XEN) mtrr: your CPUs had inconsistent variable MTRR settings
(XEN) mtrr: probably your BIOS does not setup all CPUs.
(XEN) mtrr: corrected configuration.
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Domain 0 kernel supports features = { 0000001f }.
(XEN) Domain 0 kernel requires features = { 00000000 }.
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Dom0 alloc.:   0000000007000000->0000000008000000 (999519 pages 
to be allocated)
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: c0400000->c07fe000
(XEN)  Init. ramdisk: c07fe000->c0b48200
(XEN)  Phys-Mach map: c0b49000->c0f1d17c
(XEN)  Start info:    c0f1e000->c0f1e46c
(XEN)  Page tables:   c0f1f000->c0f2c000
(XEN)  Boot stack:    c0f2c000->c0f2d000
(XEN)  TOTAL:         c0000000->c1000000
(XEN)  ENTRY ADDRESS: c0400000
(XEN) Dom0 has maximum 2 VCPUs
(XEN) Initrd len 0x34a200, start at 0xc07fe000
(XEN) Scrubbing Free RAM: 
.................................................done.
(XEN) Xen trace buffers: disabled
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch 
input to Xen).
Linux version 2.6.20-1.2933.fc6xen 
(brewbuilder(a)hs20-bc2-4.build.redhat.com) (gcc version 4.1.1 2007
0105 (Red Hat 4.1.1-51)) #1 SMP Mon Mar 19 12:00:20 EDT 2007
BIOS-provided physical RAM map:
sanitize start
sanitize bail 0
copy_e820_map() start: 0000000000000000 size: 00000000f585f000 end: 
00000000f585f000 type: 1
 Xen: 0000000000000000 - 00000000f585f000 (usable)
3200MB HIGHMEM available.
727MB LOWMEM available.
NX (Execute Disable) protection: active
Entering add_active_range(0, 0, 1005663) 0 entries of 256 used
Zone PFN ranges:
  DMA             0 ->   186366
  Normal     186366 ->   186366
  HighMem    186366 ->  1005663
early_node_map[1] active PFN ranges
    0:        0 ->  1005663
On node 0 totalpages: 1005663
  DMA zone: 1455 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 184911 pages, LIFO batch:31
  Normal zone: 0 pages used for memmap
  HighMem zone: 6400 pages used for memmap
  HighMem zone: 812897 pages, LIFO batch:31
found SMP MP-table at 000f5310
DMI 2.4 present.
ACPI: RSDP (v000 GBT                                   ) @ 0x000f6ca0
ACPI: RSDT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee3040
ACPI: FADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee30c0
ACPI: HPET (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x00000098) @ 0xcfee7cc0
ACPI: MCFG (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee7d40
ACPI: MADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee7bc0
ACPI: SSDT (v001  PmRef  Cpu0Ist 0x00003000 INTL 0x20040311) @ 0xcfee7dc0
ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20040311) @ 0xcfee8250
ACPI: DSDT (v001 GBT    GBTUACPI 0x00001000 MSFT 0x0100000c) @ 0x00000000
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Enabling APIC mode:  Flat.  Using 1 I/O APICs
Using ACPI (MADT) for SMP configuration information
Built 1 zonelists.  Total pages: 997808
Kernel command line: ro root=LABEL=/ noreboot console=ttyS0,115200n8 debug
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
CPU 0 irqstacks, hard=c0784000 soft=c0764000
PID hash table entries: 4096 (order: 12, 16384 bytes)
Xen reported: 3200.036 MHz processor.
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Software IO TLB enabled:
 Aperture:     64 megabytes
 Kernel range: 0x00000000c3396000 - 0x00000000c7396000
vmalloc area: ee000000-f4ffe000, maxmem 2d7fe000
Memory: 3901868k/4022652k available (2132k kernel code, 111384k 
reserved, 1129k data, 176k init, 327
7188k highmem)
virtual kernel memory layout:
    fixmap  : 0xf5315000 - 0xf57fe000   (5028 kB)
    pkmap   : 0xf5000000 - 0xf5200000   (2048 kB)
    vmalloc : 0xee000000 - 0xf4ffe000   ( 111 MB)
    lowmem  : 0xc0000000 - 0xed7fe000   ( 727 MB)
      .init : 0xc0734000 - 0xc0760000   ( 176 kB)
      .data : 0xc0615256 - 0xc072f794   (1129 kB)
      .text : 0xc0400000 - 0xc0615256   (2132 kB)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 8001.68 BogoMIPS 
(lpj=16003363)
Security Framework v1.0.0 initialized
SELinux:  Initializing.
SELinux:  Starting in permissive mode
selinux_register_security:  Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 512
CPU: After generic identify, caps: bfebd3f1 20100000 00000000 00000000 
0000e3bd 00000000 00000001
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 2048K
CPU: After all inits, caps: bfebd3f1 20100000 00000000 00003940 0000e3bd 
00000000 00000001
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
ACPI: Core revision 20060707
CPU 1 irqstacks, hard=c0785000 soft=c0765000
ENABLING IO-APIC IRQs
SMP alternatives: switching to SMP code
Brought up 2 CPUs
Initializing CPU#1
sizeof(vma)=88 bytes
sizeof(page)=32 bytes
sizeof(inode)=420 bytes
sizeof(dentry)=144 bytes
sizeof(ext3inode)=596 bytes
sizeof(buffer_head)=56 bytes
sizeof(skbuff)=176 bytes
sizeof(task_struct)=1408 bytes
migration_cost=10
Grant table initialized
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: BIOS Bug: MCFG area at e0000000 is not E820-reserved
PCI: Not using MMCONFIG.
PCI: Using configuration type 1
Setting up standard PCI resources
Allocating PCI resources starting at e6000000 (gap: e4000000:1ac00000)
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
PCI quirk: region 0400-047f claimed by ICH6 ACPI/GPIO/TCO
PCI quirk: region 0480-04bf claimed by ICH6 GPIO
Boot video device is 0000:01:00.0
0000:05:00.0: cannot adjust BAR2 (not I/O)
0000:05:00.0: cannot adjust BAR3 (not I/O)
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX1._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX3._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX4._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 11 12 *14 15)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 11 *12 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 11 12 14 *15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 *10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 *7 9 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, 
disabled.
ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 *5 6 7 9 10 11 12 14 15)
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
(XEN) (file=io_apic.c, line=2067)
(XEN) ioapic_guest_write: apic=0, pin=4, old_irq=4, new_irq=4
(XEN) ioapic_guest_write: old_entry=000009f1, new_entry=000109f1
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
pnp: PnP ACPI: found 13 devices
xen_mem: Initialising balloon driver.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a 
report
PCI: Cannot allocate resource region 2 of device 0000:05:00.0
PCI: Cannot allocate resource region 3 of device 0000:05:00.0
NetLabel: Initializing
NetLabel:  domain hash size = 128
NetLabel:  protocols = UNLABELED CIPSOv4
NetLabel:  unlabeled traffic allowed by default
pnp: 00:09: ioport range 0x400-0x4bf could not be reserved
PCI: Bridge: 0000:00:01.0
  IO window: disabled.
  MEM window: f2000000-f4ffffff
  PREFETCH window: d0000000-dfffffff
PCI: Bridge: 0000:00:1c.0
  IO window: 6000-6fff
  MEM window: disabled.
  PREFETCH window: disabled.
PCI: Bridge: 0000:03:00.0
  IO window: disabled.
  MEM window: f5000000-f50fffff
  PREFETCH window: disabled.
PCI: Bridge: 0000:00:1c.1
  IO window: disabled.
  MEM window: f5000000-f50fffff
  PREFETCH window: disabled.
PCI: Bridge: 0000:00:1c.3
  IO window: 7000-8fff
  MEM window: f5100000-f51fffff
  PREFETCH window: disabled.
PCI: Bridge: 0000:00:1c.4
  IO window: 9000-9fff
  MEM window: f0000000-f1ffffff
  PREFETCH window: f5300000-f53fffff
PCI: Bridge: 0000:00:1e.0
  IO window: disabled.
  MEM window: disabled.
  PREFETCH window: e4000000-efffffff
ACPI: PCI Interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 16
PCI: Setting latency timer of device 0000:00:01.0 to 64
ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 16 (level, low) -> IRQ 16
PCI: Setting latency timer of device 0000:00:1c.0 to 64
ACPI: PCI Interrupt 0000:00:1c.1[B] -> GSI 17 (level, low) -> IRQ 17
PCI: Setting latency timer of device 0000:00:1c.1 to 64
PCI: Setting latency timer of device 0000:03:00.0 to 64
ACPI: PCI Interrupt 0000:00:1c.3[D] -> GSI 19 (level, low) -> IRQ 18
PCI: Setting latency timer of device 0000:00:1c.3 to 64
ACPI: PCI Interrupt 0000:00:1c.4[A] -> GSI 16 (level, low) -> IRQ 16
PCI: Setting latency timer of device 0000:00:1c.4 to 64
PCI: Setting latency timer of device 0000:00:1e.0 to 64
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 9, 2621440 bytes)
TCP bind hash table entries: 65536 (order: 8, 1310720 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
checking if image is initramfs... it is
Freeing initrd memory: 3368k freed
IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com&gt;
audit: initializing netlink socket (disabled)
audit(1175680668.712:1): initialized
highmem bounce pool size: 64 pages
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
SELinux:  Registering netfilter hooks
ksign: Installing public key data
Loading keyring
- Added public key A99AD4F3D245F54
- User ID: Red Hat, Inc. (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
PCI: Setting latency timer of device 0000:00:01.0 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:01.0:pcie00]
PCI: Setting latency timer of device 0000:00:1c.0 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.0:pcie00]
Allocate Port Service[0000:00:1c.0:pcie02]
PCI: Setting latency timer of device 0000:00:1c.1 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.1:pcie00]
Allocate Port Service[0000:00:1c.1:pcie02]
PCI: Setting latency timer of device 0000:00:1c.3 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.3:pcie00]
Allocate Port Service[0000:00:1c.3:pcie02]
PCI: Setting latency timer of device 0000:00:1c.4 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.4:pcie00]
Allocate Port Service[0000:00:1c.4:pcie02]
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
ACPI: Processor [CPU0] (supports 2 throttling states)
ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [ 
Cpu1Ist] [20060707]
ACPI: Processor [CPU1] (supports 2 throttling states)
ACPI Exception (acpi_processor-0677): AE_NOT_FOUND, Processor Device is 
not present [20060707]
ACPI Exception (acpi_processor-0677): AE_NOT_FOUND, Processor Device is 
not present [20060707]
Real Time Clock Driver v1.12ac
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected an Intel 965G Chipset.
BUG: unable to handle kernel NULL pointer dereference at virtual address 
00000008
 printing eip:
c04b81a0
00f1f000 -> *pde = 00000000:07f20001
00f20000 -> *pme = 00000000:00000000
Oops: 0000 [#1]
SMP
last sysfs file:
Modules linked in:
CPU:    1
EIP:    0061:[<c04b81a0>]    Not tainted VLI
EFLAGS: 00010246   (2.6.20-1.2933.fc6xen #1)
EIP is at inode_has_perm+0x4c/0x63
eax: c0fd2780   ebx: c0f16d38   ecx: 00000007   edx: 00000003
esi: 00000000   edi: c0f16d70   ebp: 00100000   esp: c0f16d28
ds: 007b   es: 007b   ss: 0069
Process  (pid: 0, ti=c0f16000 task=ed7c1630 task.ti=c0f16000)
Stack: ed7c1630 c32aea88 c0fd2780 c0f16d38 00000001 00000000 00000000 
00000000
       c0b8cbfc 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
       00000000 00000000 c06f3140 00000000 c0b8cbfc 00000001 c04bc519 
00000000
Call Trace:
 [<c04bc519>] selinux_inode_permission+0x9e/0xa3
 [<c046c9bf>] permission+0xc8/0xdb
 [<c046d764>] __lookup_hash+0x1f/0xe1
 [<c046dbe5>] lookup_one_len+0x4a/0x58
 [<c049e40a>] create_dir+0x37/0x196
 [<c049ea15>] sysfs_create_dir+0x45/0x5f
 [<c04dd4f9>] kobject_add+0xd7/0x18e
 [<c04dd741>] kobject_set_name+0x2b/0x92
 [<c0542fb8>] device_add+0x8b/0x484
 [<c042dc6e>] init_waitqueue_head+0x12/0x20
 [<c054343b>] device_create+0x7a/0x9a
 [<c052c7ba>] misc_register+0x105/0x13b
 [<c0539574>] agp_frontend_initialize+0x30/0x55
 [<c0538dc5>] agp_add_bridge+0x29e/0x321
 [<c04e86f8>] __pci_enable_device+0x20/0x25
 [<c04e871a>] pci_enable_device+0x1d/0x2e
 [<c053e6c6>] agp_intel_probe+0x4f2/0x553
 [<c04ea88a>] pci_device_probe+0x36/0x57
 [<c0544b5a>] really_probe+0x7f/0x103
 [<c0544c22>] driver_probe_device+0x44/0xa5
 [<c0417716>] __might_sleep+0x21/0xc1
 [<c0544d11>] __driver_attach+0x0/0xab
 [<c0544d84>] __driver_attach+0x73/0xab
 [<c05441ac>] bus_for_each_dev+0x37/0x59
 [<c0544a14>] driver_attach+0x16/0x18
 [<c0544d11>] __driver_attach+0x0/0xab
 [<c054447d>] bus_add_driver+0x61/0x165
 [<c04ea9e6>] __pci_register_driver+0x73/0x9f
 [<c04021d5>] init+0x1c1/0x370
 [<c0404cc2>] ret_from_fork+0x6/0x1c
 [<c0402014>] init+0x0/0x370
 [<c0402014>] init+0x0/0x370
 [<c0405173>] kernel_thread_helper+0x7/0x10
 =======================
Code: 8d 44 24 10 b9 0e 00 00 00 89 44 24 0c 89 c7 89 d8 f3 ab c6 44 24 
10 01 8d 5c 24 10 89 54 24 2
0 8b 44 24 08 0f b7 48 14 8b 50 10 <8b> 46 08 89 5c 24 04 89 2c 24 e8 38 
f9 ff ff 83 c4 48 5b 5e 5f
EIP: [<c04b81a0>] inode_has_perm+0x4c/0x63 SS:ESP 0069:c0f16d28
 <1>BUG: unable to handle kernel NULL pointer dereference at virtual 
address 00000004
 printing eip:
c04248aa
00f1f000 -> *pde = 00000000:07f20001
00f20000 -> *pme = 00000000:00000000
Oops: 0002 [#2]
SMP
last sysfs file:
Modules linked in:
CPU:    1
EIP:    0061:[<c04248aa>]    Not tainted VLI
EFLAGS: 00010086   (2.6.20-1.2933.fc6xen #1)
EIP is at run_timer_softirq+0xb8/0x164
eax: 00000000   ebx: c0765fd0   ecx: ed7c45e8   edx: ed7c4600
esi: ed7c4000   edi: 0000000a   ebp: 00000001   esp: c0765fc0
ds: 007b   es: 007b   ss: 0069
Process  (pid: 0, ti=c0765000 task=ed7c1630 task.ti=c0f16000)
Stack: c06e8200 c06e8200 c042bbad c32b737c 00000000 c0765fd0 00000031 
c071b108
       0000000a 00000001 c0421c20 c0f16b74 c0f16000 00000001 ffffffff 
c04067a2
Call Trace:
 [<c042bbad>] __rcu_process_callbacks+0xe1/0x16a
 [<c0421c20>] __do_softirq+0x61/0xc2
 [<c04067a2>] do_softirq+0x5d/0xc6
 [<c041dec3>] printk+0x1f/0xa1
 [<c0441c1d>] handle_level_irq+0x0/0xdf
 [<c04068d1>] do_IRQ+0xc6/0xdd
 [<c0548cf5>] evtchn_do_upcall+0x5f/0x97
 [<c0404ff2>] hypervisor_callback+0x46/0x50
 [<c0548630>] force_evtchn_callback+0xa/0xc
 [<c0405ac3>] die+0x19e/0x22f
 [<c061326f>] do_page_fault+0xab1/0xc2e
 [<c0403f48>] __switch_to+0x34e/0x3be
 [<c0403f48>] __switch_to+0x34e/0x3be
 [<c06127be>] do_page_fault+0x0/0xc2e
 [<c061162d>] error_code+0x35/0x3c
 [<c04b81a0>] inode_has_perm+0x4c/0x63
 [<c04bc519>] selinux_inode_permission+0x9e/0xa3
 [<c046c9bf>] permission+0xc8/0xdb
 [<c046d764>] __lookup_hash+0x1f/0xe1
 [<c046dbe5>] lookup_one_len+0x4a/0x58
 [<c049e40a>] create_dir+0x37/0x196
 [<c049ea15>] sysfs_create_dir+0x45/0x5f
 [<c04dd4f9>] kobject_add+0xd7/0x18e
 [<c04dd741>] kobject_set_name+0x2b/0x92
 [<c0542fb8>] device_add+0x8b/0x484
 [<c042dc6e>] init_waitqueue_head+0x12/0x20
 [<c054343b>] device_create+0x7a/0x9a
 [<c052c7ba>] misc_register+0x105/0x13b
 [<c0539574>] agp_frontend_initialize+0x30/0x55
 [<c0538dc5>] agp_add_bridge+0x29e/0x321
 [<c04e86f8>] __pci_enable_device+0x20/0x25
 [<c04e871a>] pci_enable_device+0x1d/0x2e
 [<c053e6c6>] agp_intel_probe+0x4f2/0x553
 [<c04ea88a>] pci_device_probe+0x36/0x57
 [<c0544b5a>] really_probe+0x7f/0x103
 [<c0544c22>] driver_probe_device+0x44/0xa5
 [<c0417716>] __might_sleep+0x21/0xc1
 [<c0544d11>] __driver_attach+0x0/0xab
 [<c0544d84>] __driver_attach+0x73/0xab
 [<c05441ac>] bus_for_each_dev+0x37/0x59
 [<c0544a14>] driver_attach+0x16/0x18
 [<c0544d11>] __driver_attach+0x0/0xab
 [<c054447d>] bus_add_driver+0x61/0x165
 [<c04ea9e6>] __pci_register_driver+0x73/0x9f
 [<c04021d5>] init+0x1c1/0x370
 [<c0404cc2>] ret_from_fork+0x6/0x1c
 [<c0402014>] init+0x0/0x370
 [<c0402014>] init+0x0/0x370
 [<c0405173>] kernel_thread_helper+0x7/0x10
 =======================
Code: 85 c0 75 13 8b 4e 14 8d 96 18 0e 00 00 89 f0 c1 e9 1a e8 12 ff ff 
ff ff 46 14 8d 0c de 8b 41 1
8 8d 51 18 8d 5c 24 10 89 44 24 10 <89> 58 04 8b 42 04 89 44 24 14 89 18 
89 52 04 89 51 18 eb 66 8b
EIP: [<c04248aa>] run_timer_softirq+0xb8/0x164 SS:ESP 0069:c0765fc0
 <0>Kernel panic - not syncing: Fatal exception in interrupt
 BUG: warning at arch/i386/kernel/smp-xen.c:530/smp_call_function() (Not 
tainted)
 [<c040f1fe>] smp_call_function+0x67/0x108
 [<c040f2ba>] smp_send_stop+0x1b/0x26
 [<c041d3d5>] panic+0x4d/0x190
 [<c0405b20>] die+0x1fb/0x22f
 [<c061326f>] do_page_fault+0xab1/0xc2e
 [<c041732d>] enqueue_task+0x29/0x39
 [<c0417588>] __activate_task+0x1c/0x29
 [<c06114ff>] _spin_unlock_irqrestore+0x8/0x16
 [<c0418c85>] try_to_wake_up+0x344/0x34e
 [<c06127be>] do_page_fault+0x0/0xc2e
 [<c061162d>] error_code+0x35/0x3c
 [<c04248aa>] run_timer_softirq+0xb8/0x164
 [<c042bbad>] __rcu_process_callbacks+0xe1/0x16a
 [<c0421c20>] __do_softirq+0x61/0xc2
 [<c04067a2>] do_softirq+0x5d/0xc6
 [<c041dec3>] printk+0x1f/0xa1
 [<c0441c1d>] handle_level_irq+0x0/0xdf
 [<c04068d1>] do_IRQ+0xc6/0xdd
 [<c0548cf5>] evtchn_do_upcall+0x5f/0x97
 [<c0404ff2>] hypervisor_callback+0x46/0x50
 [<c0548630>] force_evtchn_callback+0xa/0xc
 [<c0405ac3>] die+0x19e/0x22f
 [<c061326f>] do_page_fault+0xab1/0xc2e
 [<c0403f48>] __switch_to+0x34e/0x3be
 [<c0403f48>] __switch_to+0x34e/0x3be
 [<c06127be>] do_page_fault+0x0/0xc2e
 [<c061162d>] error_code+0x35/0x3c
 [<c04b81a0>] inode_has_perm+0x4c/0x63
 [<c04bc519>] selinux_inode_permission+0x9e/0xa3
 [<c046c9bf>] permission+0xc8/0xdb
 [<c046d764>] __lookup_hash+0x1f/0xe1
 [<c046dbe5>] lookup_one_len+0x4a/0x58
 [<c049e40a>] create_dir+0x37/0x196
 [<c049ea15>] sysfs_create_dir+0x45/0x5f
 [<c04dd4f9>] kobject_add+0xd7/0x18e
 [<c04dd741>] kobject_set_name+0x2b/0x92
 [<c0542fb8>] device_add+0x8b/0x484
 [<c042dc6e>] init_waitqueue_head+0x12/0x20
 [<c054343b>] device_create+0x7a/0x9a
 [<c052c7ba>] misc_register+0x105/0x13b
 [<c0539574>] agp_frontend_initialize+0x30/0x55
 [<c0538dc5>] agp_add_bridge+0x29e/0x321
 [<c04e86f8>] __pci_enable_device+0x20/0x25
 [<c04e871a>] pci_enable_device+0x1d/0x2e
 [<c053e6c6>] agp_intel_probe+0x4f2/0x553
 [<c04ea88a>] pci_device_probe+0x36/0x57
 [<c0544b5a>] really_probe+0x7f/0x103
 [<c0544c22>] driver_probe_device+0x44/0xa5
 [<c0417716>] __might_sleep+0x21/0xc1
 [<c0544d11>] __driver_attach+0x0/0xab
 [<c0544d84>] __driver_attach+0x73/0xab
 [<c05441ac>] bus_for_each_dev+0x37/0x59
 [<c0544a14>] driver_attach+0x16/0x18
 [<c0544d11>] __driver_attach+0x0/0xab
 [<c054447d>] bus_add_driver+0x61/0x165
 [<c04ea9e6>] __pci_register_driver+0x73/0x9f
 [<c04021d5>] init+0x1c1/0x370
 [<c0404cc2>] ret_from_fork+0x6/0x1c
 [<c0402014>] init+0x0/0x370
 [<c0402014>] init+0x0/0x370
 [<c0405173>] kernel_thread_helper+0x7/0x10
 =======================
(XEN) Domain 0 crashed: 'noreboot' set - not rebooting.

[George Shearer]

I can't seem to win.. with Xen... :-/

Ok, agp=no on the kernel command gets me past the agpgart crash listed 
below. However... I am presented with another OOPS as soon as the kernel 
in dom0 gets around to looking at my firewire-attached drives.

If I unplug my external firewire chassis, it actually completes booting 
and everything seems ok.. However, the SECOND I plug my drives in, Xen 
panics.. Here's the OOPS...

kernel BUG at lib/../arch/i386/kernel/swiotlb.c:394!
invalid opcode: 0000 [#1]
SMP
last sysfs file: /devices/pci0000:00/0000:00:00.0/irq
Modules linked in: sbp2 bridge netloop netbk blktap blkbk ipv6 dm_mirror 
dm_mod raid1 raid0 video sb
s i2c_ec button battery asus_acpi ac parport_pc lp parport sg iTCO_wdt 
ahci ide_cd ohci1394 i2c_i801
 ieee1394 i2c_core cdrom serial_core pl2303 pcspkr sky2 usbserial floppy 
ata_piix libata sd_mod scsi
_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd
CPU:    0
EIP:    0061:[<c04ecaaf>]    Not tainted VLI
EFLAGS: 00010082   (2.6.19-1.2911.6.5.fc6xen #1)
EIP is at sync_single+0x46/0x72
eax: 00000043   ebx: c0aef000   ecx: c32c6700   edx: f5416000
esi: 0000ffff   edi: c1580040   ebp: 00000180   esp: ecbc8b08
ds: 007b   es: 007b   ss: 0069
Process modprobe (pid: 2680, ti=ecbc8000 task=c08729d0 task.ti=ecbc8000)
Stack: c0633172 c0647317 000007f8 c3c54800 c0aef000 0000ffff ece95c98 
ec002080
       eea6412e 00000000 00000000 00000024 c08729d0 00000000 ed6d8000 
00000220
       00011440 ec002000 c0832400 c74231f8 ecbc8b88 c061a5b2 c0832400 
00000024
Call Trace:
 [<eea6412e>] sbp2scsi_queuecommand+0x5d7/0x792 [sbp2]
 [<ee065aa1>] scsi_dispatch_cmd+0x240/0x2be [scsi_mod]
 [<ee06a4aa>] scsi_request_fn+0x27d/0x33a [scsi_mod]
 [<c04da8b6>] __generic_unplug_device+0x1d/0x1f
 [<c04da946>] blk_execute_rq_nowait+0x8e/0x9f
 [<c04daa1f>] blk_execute_rq+0xc8/0xe5
 [<ee069d75>] scsi_execute+0xdd/0xf1 [scsi_mod]
 [<ee069e40>] scsi_execute_req+0xb7/0xd5 [scsi_mod]
 [<ee06b251>] scsi_probe_and_add_lun+0x21c/0x93c [scsi_mod]
 [<ee06c626>] __scsi_add_device+0x5d/0x7e [scsi_mod]
 [<ee06c65f>] scsi_add_device+0x18/0x2a [scsi_mod]
 [<eea637c6>] sbp2_probe+0x4ea/0x54f [sbp2]
 [<c054c87c>] really_probe+0x39/0xda
 [<c054cab3>] __driver_attach+0x73/0xab
 [<c054bf8c>] bus_for_each_dev+0x37/0x59
 [<c054c79f>] driver_attach+0x16/0x18
 [<c054c25d>] bus_add_driver+0x61/0x165
 [<ee19ca40>] hpsb_register_protocol+0xd/0x2f [ieee1394]
 [<eea638aa>] sbp2_module_init+0x7f/0xa0 [sbp2]
 [<c0439d2d>] sys_init_module+0x1806/0x19b1
 [<c0404eff>] syscall_call+0x7/0xb
 [<00959402>] 0x959402
 =======================
Code: e0 03 03 05 4c 36 84 c0 8b 68 04 8b 38 8b 44 24 24 48 83 f8 01 76 
1c c7 44 24 04 17 73 64 c0 c
7 04 24 72 31 63 c0 e8 52 1e f3 ff <0f> 0b 8a 01 4a 73 64 c0 8b 44 24 24 
89 ea 8b 4c 24 0c 89 44 24
EIP: [<c04ecaaf>] sync_single+0x46/0x72 SS:ESP 0069:ecbc8b08
 <3>BUG: sleeping function called from invalid context at kernel/rwsem.c:20
in_atomic():0, irqs_disabled():1
 [<c0405703>] dump_trace+0x69/0x1b6
 [<c0405868>] show_trace_log_lvl+0x18/0x2c
 [<c0405e4f>] show_trace+0xf/0x11
 [<c0405e7e>] dump_stack+0x15/0x17
 [<c04332c2>] down_read+0x12/0x28
 [<c042ad12>] blocking_notifier_call_chain+0xe/0x29
 [<c0420dd1>] do_exit+0x1b/0x79b
 [<c0405df0>] die+0x2af/0x2d4
 [<c0406266>] do_invalid_op+0xa2/0xab
 [<c061a783>] error_code+0x2b/0x30
 [<c04ecaaf>] sync_single+0x46/0x72
 [<eea6412e>] sbp2scsi_queuecommand+0x5d7/0x792 [sbp2]
 [<ee065aa1>] scsi_dispatch_cmd+0x240/0x2be [scsi_mod]
 [<ee06a4aa>] scsi_request_fn+0x27d/0x33a [scsi_mod]
 [<c04da8b6>] __generic_unplug_device+0x1d/0x1f
 [<c04da946>] blk_execute_rq_nowait+0x8e/0x9f
 [<c04daa1f>] blk_execute_rq+0xc8/0xe5
 [<ee069d75>] scsi_execute+0xdd/0xf1 [scsi_mod]
 [<ee069e40>] scsi_execute_req+0xb7/0xd5 [scsi_mod]
 [<ee06b251>] scsi_probe_and_add_lun+0x21c/0x93c [scsi_mod]
 [<ee06c626>] __scsi_add_device+0x5d/0x7e [scsi_mod]
 [<ee06c65f>] scsi_add_device+0x18/0x2a [scsi_mod]
 [<eea637c6>] sbp2_probe+0x4ea/0x54f [sbp2]
 [<c054c87c>] really_probe+0x39/0xda
 [<c054cab3>] __driver_attach+0x73/0xab
 [<c054bf8c>] bus_for_each_dev+0x37/0x59
 [<c054c79f>] driver_attach+0x16/0x18
 [<c054c25d>] bus_add_driver+0x61/0x165
 [<ee19ca40>] hpsb_register_protocol+0xd/0x2f [ieee1394]
 [<eea638aa>] sbp2_module_init+0x7f/0xa0 [sbp2]
 [<c0439d2d>] sys_init_module+0x1806/0x19b1
 [<c0404eff>] syscall_call+0x7/0xb
 [<00959402>] 0x959402
 =======================
BUG: spinlock lockup on CPU#0, swapper/0, ed6df034 (Not tainted)
 [<c0405703>] dump_trace+0x69/0x1b6
 [<c0405868>] show_trace_log_lvl+0x18/0x2c
 [<c0405e4f>] show_trace+0xf/0x11
 [<c0405e7e>] dump_stack+0x15/0x17
 [<c04e992f>] _raw_spin_lock+0xbf/0xdc
 [<c061a5b2>] _spin_lock_irqsave+0x12/0x17
 [<ee0681ef>] scsi_eh_scmd_add+0x1f/0x78 [scsi_mod]
 [<ee068293>] scsi_times_out+0x4b/0x63 [scsi_mod]
 [<c0427bc3>] run_timer_softirq+0x105/0x16c
 [<c0422ed5>] __do_softirq+0x5e/0xc3
 [<c0406a3a>] do_softirq+0x59/0xca
 =======================



George Shearer wrote:
>  Hey All,
>
>  Attempting to run FC6-xen on my system. It's currently running 
>  2.6.20-1.2933.fc6.i686 happily. However, the XEN kernel panics on 
>  boot. I had to enable serial console in order to capture the dmesg for 
>  troubleshooting. I'd like your opinion of this output.
>
>  Looks to me like it has something to do with agpgart. This is on a 
>  Gigabyte GA-965P-DS3 motherboard (rev 1.0, bios F10), with a Conroe 
>  E6400 and 4GB DDR2-800. ICH8 is the main northbridge, however, there's 
>  also a JMB363 AHCI IDE controller as well.
>
>  A non-xen kernel agpgart section looks like this:
>  Linux agpgart interface v0.101 (c) Dave Jones
>  agpgart: Detected an Intel 965G Chipset.
>  agpgart: AGP aperture is 256M @ 0x0
>
>  However, as you will see, in the boot text below, the xen-kernel 
>  (dom0) seems to kernel panic right after this:
>  Linux agpgart interface v0.101 (c) Dave Jones
>  agpgart: Detected an Intel 965G Chipset.
>  BUG: unable to handle kernel NULL pointer dereference at virtual 
>  address 00000008
>  printing eip:
>  c04b81a0
>  .... cut
>
>
>
>  Thank you for your time.
>
>  __  __            _____  ___   _____     ___    __       __
>  \ \/ /___ _ __   |___ / / _ \ |___ /    / _ \  / _| ___ / /_
>   \  // _ \ '_ \    |_ \| | | |  |_ \ __| | | || |_ / __| '_ \
>   /  \  __/ | | |  ___) | |_| | ___) |__| |_| ||  _| (__| (_) |
>  /_/\_\___|_| |_| |____(_)___(_)____/    \___(_)_|  \___|\___/
>
>  http://www.cl.cam.ac.uk/netos/xen
>  University of Cambridge Computer Laboratory
>
>  Xen version 3.0.3-0-1.2933.fc6 (brewbuilder(a)build.redhat.com) (gcc 
>  version 4.1.1 20070105 (Red Hat
>  4.1.1-51)) Mon Mar 19 10:39:57 EDT 2007
>  Latest ChangeSet: unavailable
>
>  (XEN) Command line: /boot/xen.gz-2.6.20-1.2933.fc6 noreboot 
>  com1=115200,8n1
>  (XEN) Physical RAM map:
>  (XEN)  0000000000000000 - 000000000009f800 (usable)
>  (XEN)  000000000009f800 - 00000000000a0000 (reserved)
>  (XEN)  00000000000f0000 - 0000000000100000 (reserved)
>  (XEN)  0000000000100000 - 00000000cfee0000 (usable)
>  (XEN)  00000000cfee0000 - 00000000cfee3000 (ACPI NVS)
>  (XEN)  00000000cfee3000 - 00000000cfef0000 (ACPI data)
>  (XEN)  00000000cfef0000 - 00000000cff00000 (reserved)
>  (XEN)  00000000e0000000 - 00000000e4000000 (reserved)
>  (XEN)  00000000fec00000 - 0000000100000000 (reserved)
>  (XEN)  0000000100000000 - 0000000130000000 (usable)
>  (XEN) System RAM: 4094MB (4192764kB)
>  (XEN) Xen heap: 9MB (10224kB)
>  (XEN) PAE enabled, limit: 16 GB
>  (XEN) found SMP MP-table at 000f5310
>  (XEN) DMI 2.4 present.
>  (XEN) Using APIC driver default
>  (XEN) ACPI: RSDP (v000 GBT                                   ) @ 
>  0x000f6ca0
>  (XEN) ACPI: RSDT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 
>  0xcfee3040
>  (XEN) ACPI: FADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 
>  0xcfee30c0
>  (XEN) ACPI: HPET (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x00000098) @ 
>  0xcfee7cc0
>  (XEN) ACPI: MCFG (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 
>  0xcfee7d40
>  (XEN) ACPI: MADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 
>  0xcfee7bc0
>  (XEN) ACPI: SSDT (v001  PmRef  Cpu0Ist 0x00003000 INTL 0x20040311) @ 
>  0xcfee7dc0
>  (XEN) ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20040311) @ 
>  0xcfee8250
>  (XEN) ACPI: DSDT (v001 GBT    GBTUACPI 0x00001000 MSFT 0x0100000c) @ 
>  0x00000000
>  (XEN) ACPI: Local APIC address 0xfee00000
>  (XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>  (XEN) Processor #0 6:15 APIC version 20
>  (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
>  (XEN) Processor #1 6:15 APIC version 20
>  (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
>  (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
>  (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
>  (XEN) ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
>  (XEN) ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
>  (XEN) ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
>  (XEN) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
>  (XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
>  (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
>  (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
>  (XEN) ACPI: IRQ0 used by override.
>  (XEN) ACPI: IRQ2 used by override.
>  (XEN) ACPI: IRQ9 used by override.
>  (XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
>  (XEN) ACPI: HPET id: 0x8086a201 base: 0xfed00000
>  (XEN) Using ACPI (MADT) for SMP configuration information
>  (XEN) Using scheduler: SMP Credit Scheduler (credit)
>  (XEN) Initializing CPU#0
>  (XEN) Detected 3200.037 MHz processor.
>  (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>  (XEN) CPU: L2 cache: 2048K
>  (XEN) CPU: Physical Processor ID: 0
>  (XEN) CPU: Processor Core ID: 0
>  (XEN) VMXON is done
>  (XEN) Intel machine check architecture supported.
>  (XEN) Intel machine check reporting enabled on CPU#0.
>  (XEN) CPU0: Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz stepping 06
>  (XEN) Booting processor 1/1 eip 90000
>  (XEN) Initializing CPU#1
>  (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>  (XEN) CPU: L2 cache: 2048K
>  (XEN) CPU: Physical Processor ID: 0
>  (XEN) CPU: Processor Core ID: 1
>  (XEN) VMXON is done
>  (XEN) Intel machine check architecture supported.
>  (XEN) Intel machine check reporting enabled on CPU#1.
>  (XEN) CPU1: Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz stepping 06
>  (XEN) Total of 2 processors activated.
>  (XEN) ENABLING IO-APIC IRQs
>  (XEN)  -> Using new ACK method
>  (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
>  (XEN) checking TSC synchronization across 2 CPUs: passed.
>  (XEN) Platform timer is 14.318MHz HPET
>  (XEN) Brought up 2 CPUs
>  (XEN) Machine check exception polling timer started.
>  (XEN) mtrr: your CPUs had inconsistent variable MTRR settings
>  (XEN) mtrr: probably your BIOS does not setup all CPUs.
>  (XEN) mtrr: corrected configuration.
>  (XEN) *** LOADING DOMAIN 0 ***
>  (XEN) Domain 0 kernel supports features = { 0000001f }.
>  (XEN) Domain 0 kernel requires features = { 00000000 }.
>  (XEN) PHYSICAL MEMORY ARRANGEMENT:
>  (XEN)  Dom0 alloc.:   0000000007000000->0000000008000000 (999519 pages 
>  to be allocated)
>  (XEN) VIRTUAL MEMORY ARRANGEMENT:
>  (XEN)  Loaded kernel: c0400000->c07fe000
>  (XEN)  Init. ramdisk: c07fe000->c0b48200
>  (XEN)  Phys-Mach map: c0b49000->c0f1d17c
>  (XEN)  Start info:    c0f1e000->c0f1e46c
>  (XEN)  Page tables:   c0f1f000->c0f2c000
>  (XEN)  Boot stack:    c0f2c000->c0f2d000
>  (XEN)  TOTAL:         c0000000->c1000000
>  (XEN)  ENTRY ADDRESS: c0400000
>  (XEN) Dom0 has maximum 2 VCPUs
>  (XEN) Initrd len 0x34a200, start at 0xc07fe000
>  (XEN) Scrubbing Free RAM: 
>  .................................................done.
>  (XEN) Xen trace buffers: disabled
>  (XEN) Xen is relinquishing VGA console.
>  (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch 
>  input to Xen).
>  Linux version 2.6.20-1.2933.fc6xen 
>  (brewbuilder(a)hs20-bc2-4.build.redhat.com) (gcc version 4.1.1 2007
>  0105 (Red Hat 4.1.1-51)) #1 SMP Mon Mar 19 12:00:20 EDT 2007
>  BIOS-provided physical RAM map:
>  sanitize start
>  sanitize bail 0
>  copy_e820_map() start: 0000000000000000 size: 00000000f585f000 end: 
>  00000000f585f000 type: 1
>  Xen: 0000000000000000 - 00000000f585f000 (usable)
>  3200MB HIGHMEM available.
>  727MB LOWMEM available.
>  NX (Execute Disable) protection: active
>  Entering add_active_range(0, 0, 1005663) 0 entries of 256 used
>  Zone PFN ranges:
>   DMA             0 ->   186366
>   Normal     186366 ->   186366
>   HighMem    186366 ->  1005663
>  early_node_map[1] active PFN ranges
>     0:        0 ->  1005663
>  On node 0 totalpages: 1005663
>   DMA zone: 1455 pages used for memmap
>   DMA zone: 0 pages reserved
>   DMA zone: 184911 pages, LIFO batch:31
>   Normal zone: 0 pages used for memmap
>   HighMem zone: 6400 pages used for memmap
>   HighMem zone: 812897 pages, LIFO batch:31
>  found SMP MP-table at 000f5310
>  DMI 2.4 present.
>  ACPI: RSDP (v000 GBT                                   ) @ 0x000f6ca0
>  ACPI: RSDT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee3040
>  ACPI: FADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee30c0
>  ACPI: HPET (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x00000098) @ 0xcfee7cc0
>  ACPI: MCFG (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee7d40
>  ACPI: MADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee7bc0
>  ACPI: SSDT (v001  PmRef  Cpu0Ist 0x00003000 INTL 0x20040311) @ 0xcfee7dc0
>  ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20040311) @ 0xcfee8250
>  ACPI: DSDT (v001 GBT    GBTUACPI 0x00001000 MSFT 0x0100000c) @ 0x00000000
>  ACPI: Local APIC address 0xfee00000
>  ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>  ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
>  ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
>  ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
>  ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
>  ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
>  ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
>  ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
>  ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
>  IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
>  ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
>  ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
>  ACPI: IRQ0 used by override.
>  ACPI: IRQ2 used by override.
>  ACPI: IRQ9 used by override.
>  Enabling APIC mode:  Flat.  Using 1 I/O APICs
>  Using ACPI (MADT) for SMP configuration information
>  Built 1 zonelists.  Total pages: 997808
>  Kernel command line: ro root=LABEL=/ noreboot console=ttyS0,115200n8 
>  debug
>  Enabling fast FPU save and restore... done.
>  Enabling unmasked SIMD FPU exception support... done.
>  Initializing CPU#0
>  CPU 0 irqstacks, hard=c0784000 soft=c0764000
>  PID hash table entries: 4096 (order: 12, 16384 bytes)
>  Xen reported: 3200.036 MHz processor.
>  Console: colour VGA+ 80x25
>  Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
>  Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
>  Software IO TLB enabled:
>  Aperture:     64 megabytes
>  Kernel range: 0x00000000c3396000 - 0x00000000c7396000
>  vmalloc area: ee000000-f4ffe000, maxmem 2d7fe000
>  Memory: 3901868k/4022652k available (2132k kernel code, 111384k 
>  reserved, 1129k data, 176k init, 327
>  7188k highmem)
>  virtual kernel memory layout:
>     fixmap  : 0xf5315000 - 0xf57fe000   (5028 kB)
>     pkmap   : 0xf5000000 - 0xf5200000   (2048 kB)
>     vmalloc : 0xee000000 - 0xf4ffe000   ( 111 MB)
>     lowmem  : 0xc0000000 - 0xed7fe000   ( 727 MB)
>       .init : 0xc0734000 - 0xc0760000   ( 176 kB)
>       .data : 0xc0615256 - 0xc072f794   (1129 kB)
>       .text : 0xc0400000 - 0xc0615256   (2132 kB)
>  Checking if this processor honours the WP bit even in supervisor 
>  mode... Ok.
>  Calibrating delay using timer specific routine.. 8001.68 BogoMIPS 
>  (lpj=16003363)
>  Security Framework v1.0.0 initialized
>  SELinux:  Initializing.
>  SELinux:  Starting in permissive mode
>  selinux_register_security:  Registering secondary module capability
>  Capability LSM initialized as secondary
>  Mount-cache hash table entries: 512
>  CPU: After generic identify, caps: bfebd3f1 20100000 00000000 00000000 
>  0000e3bd 00000000 00000001
>  CPU: L1 I cache: 32K, L1 D cache: 32K
>  CPU: L2 cache: 2048K
>  CPU: After all inits, caps: bfebd3f1 20100000 00000000 00003940 
>  0000e3bd 00000000 00000001
>  Checking 'hlt' instruction... OK.
>  SMP alternatives: switching to UP code
>  ACPI: Core revision 20060707
>  CPU 1 irqstacks, hard=c0785000 soft=c0765000
>  ENABLING IO-APIC IRQs
>  SMP alternatives: switching to SMP code
>  Brought up 2 CPUs
>  Initializing CPU#1
>  sizeof(vma)=88 bytes
>  sizeof(page)=32 bytes
>  sizeof(inode)=420 bytes
>  sizeof(dentry)=144 bytes
>  sizeof(ext3inode)=596 bytes
>  sizeof(buffer_head)=56 bytes
>  sizeof(skbuff)=176 bytes
>  sizeof(task_struct)=1408 bytes
>  migration_cost=10
>  Grant table initialized
>  NET: Registered protocol family 16
>  ACPI: bus type pci registered
>  PCI: BIOS Bug: MCFG area at e0000000 is not E820-reserved
>  PCI: Not using MMCONFIG.
>  PCI: Using configuration type 1
>  Setting up standard PCI resources
>  Allocating PCI resources starting at e6000000 (gap: e4000000:1ac00000)
>  ACPI: Interpreter enabled
>  ACPI: Using IOAPIC for interrupt routing
>  ACPI: PCI Root Bridge [PCI0] (0000:00)
>  PCI: Probing PCI hardware (bus 00)
>  PCI quirk: region 0400-047f claimed by ICH6 ACPI/GPIO/TCO
>  PCI quirk: region 0480-04bf claimed by ICH6 GPIO
>  Boot video device is 0000:01:00.0
>  0000:05:00.0: cannot adjust BAR2 (not I/O)
>  0000:05:00.0: cannot adjust BAR3 (not I/O)
>  PCI: Transparent bridge - 0000:00:1e.0
>  ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
>  ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX0._PRT]
>  ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX1._PRT]
>  ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX3._PRT]
>  ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX4._PRT]
>  ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT]
>  ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
>  ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 11 12 *14 15)
>  ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 11 *12 14 15)
>  ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 11 12 14 *15)
>  ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 *10 11 12 14 15)
>  ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 *7 9 10 11 12 14 15)
>  ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, 
>  disabled.
>  ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 *5 6 7 9 10 11 12 14 15)
>  Linux Plug and Play Support v0.97 (c) Adam Belay
>  pnp: PnP ACPI init
>  (XEN) (file=io_apic.c, line=2067)
>  (XEN) ioapic_guest_write: apic=0, pin=4, old_irq=4, new_irq=4
>  (XEN) ioapic_guest_write: old_entry=000009f1, new_entry=000109f1
>  (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
>  pnp: PnP ACPI: found 13 devices
>  xen_mem: Initialising balloon driver.
>  usbcore: registered new interface driver usbfs
>  usbcore: registered new interface driver hub
>  usbcore: registered new device driver usb
>  PCI: Using ACPI for IRQ routing
>  PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post 
>  a report
>  PCI: Cannot allocate resource region 2 of device 0000:05:00.0
>  PCI: Cannot allocate resource region 3 of device 0000:05:00.0
>  NetLabel: Initializing
>  NetLabel:  domain hash size = 128
>  NetLabel:  protocols = UNLABELED CIPSOv4
>  NetLabel:  unlabeled traffic allowed by default
>  pnp: 00:09: ioport range 0x400-0x4bf could not be reserved
>  PCI: Bridge: 0000:00:01.0
>   IO window: disabled.
>   MEM window: f2000000-f4ffffff
>   PREFETCH window: d0000000-dfffffff
>  PCI: Bridge: 0000:00:1c.0
>   IO window: 6000-6fff
>   MEM window: disabled.
>   PREFETCH window: disabled.
>  PCI: Bridge: 0000:03:00.0
>   IO window: disabled.
>   MEM window: f5000000-f50fffff
>   PREFETCH window: disabled.
>  PCI: Bridge: 0000:00:1c.1
>   IO window: disabled.
>   MEM window: f5000000-f50fffff
>   PREFETCH window: disabled.
>  PCI: Bridge: 0000:00:1c.3
>   IO window: 7000-8fff
>   MEM window: f5100000-f51fffff
>   PREFETCH window: disabled.
>  PCI: Bridge: 0000:00:1c.4
>   IO window: 9000-9fff
>   MEM window: f0000000-f1ffffff
>   PREFETCH window: f5300000-f53fffff
>  PCI: Bridge: 0000:00:1e.0
>   IO window: disabled.
>   MEM window: disabled.
>   PREFETCH window: e4000000-efffffff
>  ACPI: PCI Interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 16
>  PCI: Setting latency timer of device 0000:00:01.0 to 64
>  ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 16 (level, low) -> IRQ 16
>  PCI: Setting latency timer of device 0000:00:1c.0 to 64
>  ACPI: PCI Interrupt 0000:00:1c.1[B] -> GSI 17 (level, low) -> IRQ 17
>  PCI: Setting latency timer of device 0000:00:1c.1 to 64
>  PCI: Setting latency timer of device 0000:03:00.0 to 64
>  ACPI: PCI Interrupt 0000:00:1c.3[D] -> GSI 19 (level, low) -> IRQ 18
>  PCI: Setting latency timer of device 0000:00:1c.3 to 64
>  ACPI: PCI Interrupt 0000:00:1c.4[A] -> GSI 16 (level, low) -> IRQ 16
>  PCI: Setting latency timer of device 0000:00:1c.4 to 64
>  PCI: Setting latency timer of device 0000:00:1e.0 to 64
>  NET: Registered protocol family 2
>  IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
>  TCP established hash table entries: 131072 (order: 9, 2621440 bytes)
>  TCP bind hash table entries: 65536 (order: 8, 1310720 bytes)
>  TCP: Hash tables configured (established 131072 bind 65536)
>  TCP reno registered
>  checking if image is initramfs... it is
>  Freeing initrd memory: 3368k freed
>  IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com&gt;
>  audit: initializing netlink socket (disabled)
>  audit(1175680668.712:1): initialized
>  highmem bounce pool size: 64 pages
>  VFS: Disk quotas dquot_6.5.1
>  Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
>  SELinux:  Registering netfilter hooks
>  ksign: Installing public key data
>  Loading keyring
>  - Added public key A99AD4F3D245F54
>  - User ID: Red Hat, Inc. (Kernel Module GPG key)
>  io scheduler noop registered
>  io scheduler anticipatory registered
>  io scheduler deadline registered
>  io scheduler cfq registered (default)
>  PCI: Setting latency timer of device 0000:00:01.0 to 64
>  assign_interrupt_mode Found MSI capability
>  Allocate Port Service[0000:00:01.0:pcie00]
>  PCI: Setting latency timer of device 0000:00:1c.0 to 64
>  assign_interrupt_mode Found MSI capability
>  Allocate Port Service[0000:00:1c.0:pcie00]
>  Allocate Port Service[0000:00:1c.0:pcie02]
>  PCI: Setting latency timer of device 0000:00:1c.1 to 64
>  assign_interrupt_mode Found MSI capability
>  Allocate Port Service[0000:00:1c.1:pcie00]
>  Allocate Port Service[0000:00:1c.1:pcie02]
>  PCI: Setting latency timer of device 0000:00:1c.3 to 64
>  assign_interrupt_mode Found MSI capability
>  Allocate Port Service[0000:00:1c.3:pcie00]
>  Allocate Port Service[0000:00:1c.3:pcie02]
>  PCI: Setting latency timer of device 0000:00:1c.4 to 64
>  assign_interrupt_mode Found MSI capability
>  Allocate Port Service[0000:00:1c.4:pcie00]
>  Allocate Port Service[0000:00:1c.4:pcie02]
>  pci_hotplug: PCI Hot Plug PCI Core version: 0.5
>  ACPI: Processor [CPU0] (supports 2 throttling states)
>  ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [ 
>  Cpu1Ist] [20060707]
>  ACPI: Processor [CPU1] (supports 2 throttling states)
>  ACPI Exception (acpi_processor-0677): AE_NOT_FOUND, Processor Device 
>  is not present [20060707]
>  ACPI Exception (acpi_processor-0677): AE_NOT_FOUND, Processor Device 
>  is not present [20060707]
>  Real Time Clock Driver v1.12ac
>  Non-volatile memory driver v1.2
>  Linux agpgart interface v0.101 (c) Dave Jones
>  agpgart: Detected an Intel 965G Chipset.
>  BUG: unable to handle kernel NULL pointer dereference at virtual 
>  address 00000008
>  printing eip:
>  c04b81a0
>  00f1f000 -> *pde = 00000000:07f20001
>  00f20000 -> *pme = 00000000:00000000
>  Oops: 0000 [#1]
>  SMP
>  last sysfs file:
>  Modules linked in:
>  CPU:    1
>  EIP:    0061:[<c04b81a0>]    Not tainted VLI
>  EFLAGS: 00010246   (2.6.20-1.2933.fc6xen #1)
>  EIP is at inode_has_perm+0x4c/0x63
>  eax: c0fd2780   ebx: c0f16d38   ecx: 00000007   edx: 00000003
>  esi: 00000000   edi: c0f16d70   ebp: 00100000   esp: c0f16d28
>  ds: 007b   es: 007b   ss: 0069
>  Process  (pid: 0, ti=c0f16000 task=ed7c1630 task.ti=c0f16000)
>  Stack: ed7c1630 c32aea88 c0fd2780 c0f16d38 00000001 00000000 00000000 
>  00000000
>        c0b8cbfc 00000000 00000000 00000000 00000000 00000000 00000000 
>  00000000
>        00000000 00000000 c06f3140 00000000 c0b8cbfc 00000001 c04bc519 
>  00000000
>  Call Trace:
>  [<c04bc519>] selinux_inode_permission+0x9e/0xa3
>  [<c046c9bf>] permission+0xc8/0xdb
>  [<c046d764>] __lookup_hash+0x1f/0xe1
>  [<c046dbe5>] lookup_one_len+0x4a/0x58
>  [<c049e40a>] create_dir+0x37/0x196
>  [<c049ea15>] sysfs_create_dir+0x45/0x5f
>  [<c04dd4f9>] kobject_add+0xd7/0x18e
>  [<c04dd741>] kobject_set_name+0x2b/0x92
>  [<c0542fb8>] device_add+0x8b/0x484
>  [<c042dc6e>] init_waitqueue_head+0x12/0x20
>  [<c054343b>] device_create+0x7a/0x9a
>  [<c052c7ba>] misc_register+0x105/0x13b
>  [<c0539574>] agp_frontend_initialize+0x30/0x55
>  [<c0538dc5>] agp_add_bridge+0x29e/0x321
>  [<c04e86f8>] __pci_enable_device+0x20/0x25
>  [<c04e871a>] pci_enable_device+0x1d/0x2e
>  [<c053e6c6>] agp_intel_probe+0x4f2/0x553
>  [<c04ea88a>] pci_device_probe+0x36/0x57
>  [<c0544b5a>] really_probe+0x7f/0x103
>  [<c0544c22>] driver_probe_device+0x44/0xa5
>  [<c0417716>] __might_sleep+0x21/0xc1
>  [<c0544d11>] __driver_attach+0x0/0xab
>  [<c0544d84>] __driver_attach+0x73/0xab
>  [<c05441ac>] bus_for_each_dev+0x37/0x59
>  [<c0544a14>] driver_attach+0x16/0x18
>  [<c0544d11>] __driver_attach+0x0/0xab
>  [<c054447d>] bus_add_driver+0x61/0x165
>  [<c04ea9e6>] __pci_register_driver+0x73/0x9f
>  [<c04021d5>] init+0x1c1/0x370
>  [<c0404cc2>] ret_from_fork+0x6/0x1c
>  [<c0402014>] init+0x0/0x370
>  [<c0402014>] init+0x0/0x370
>  [<c0405173>] kernel_thread_helper+0x7/0x10
>  =======================
>  Code: 8d 44 24 10 b9 0e 00 00 00 89 44 24 0c 89 c7 89 d8 f3 ab c6 44 
>  24 10 01 8d 5c 24 10 89 54 24 2
>  0 8b 44 24 08 0f b7 48 14 8b 50 10 <8b> 46 08 89 5c 24 04 89 2c 24 e8 
>  38 f9 ff ff 83 c4 48 5b 5e 5f
>  EIP: [<c04b81a0>] inode_has_perm+0x4c/0x63 SS:ESP 0069:c0f16d28
>  <1>BUG: unable to handle kernel NULL pointer dereference at virtual 
>  address 00000004
>  printing eip:
>  c04248aa
>  00f1f000 -> *pde = 00000000:07f20001
>  00f20000 -> *pme = 00000000:00000000
>  Oops: 0002 [#2]
>  SMP
>  last sysfs file:
>  Modules linked in:
>  CPU:    1
>  EIP:    0061:[<c04248aa>]    Not tainted VLI
>  EFLAGS: 00010086   (2.6.20-1.2933.fc6xen #1)
>  EIP is at run_timer_softirq+0xb8/0x164
>  eax: 00000000   ebx: c0765fd0   ecx: ed7c45e8   edx: ed7c4600
>  esi: ed7c4000   edi: 0000000a   ebp: 00000001   esp: c0765fc0
>  ds: 007b   es: 007b   ss: 0069
>  Process  (pid: 0, ti=c0765000 task=ed7c1630 task.ti=c0f16000)
>  Stack: c06e8200 c06e8200 c042bbad c32b737c 00000000 c0765fd0 00000031 
>  c071b108
>        0000000a 00000001 c0421c20 c0f16b74 c0f16000 00000001 ffffffff 
>  c04067a2
>  Call Trace:
>  [<c042bbad>] __rcu_process_callbacks+0xe1/0x16a
>  [<c0421c20>] __do_softirq+0x61/0xc2
>  [<c04067a2>] do_softirq+0x5d/0xc6
>  [<c041dec3>] printk+0x1f/0xa1
>  [<c0441c1d>] handle_level_irq+0x0/0xdf
>  [<c04068d1>] do_IRQ+0xc6/0xdd
>  [<c0548cf5>] evtchn_do_upcall+0x5f/0x97
>  [<c0404ff2>] hypervisor_callback+0x46/0x50
>  [<c0548630>] force_evtchn_callback+0xa/0xc
>  [<c0405ac3>] die+0x19e/0x22f
>  [<c061326f>] do_page_fault+0xab1/0xc2e
>  [<c0403f48>] __switch_to+0x34e/0x3be
>  [<c0403f48>] __switch_to+0x34e/0x3be
>  [<c06127be>] do_page_fault+0x0/0xc2e
>  [<c061162d>] error_code+0x35/0x3c
>  [<c04b81a0>] inode_has_perm+0x4c/0x63
>  [<c04bc519>] selinux_inode_permission+0x9e/0xa3
>  [<c046c9bf>] permission+0xc8/0xdb
>  [<c046d764>] __lookup_hash+0x1f/0xe1
>  [<c046dbe5>] lookup_one_len+0x4a/0x58
>  [<c049e40a>] create_dir+0x37/0x196
>  [<c049ea15>] sysfs_create_dir+0x45/0x5f
>  [<c04dd4f9>] kobject_add+0xd7/0x18e
>  [<c04dd741>] kobject_set_name+0x2b/0x92
>  [<c0542fb8>] device_add+0x8b/0x484
>  [<c042dc6e>] init_waitqueue_head+0x12/0x20
>  [<c054343b>] device_create+0x7a/0x9a
>  [<c052c7ba>] misc_register+0x105/0x13b
>  [<c0539574>] agp_frontend_initialize+0x30/0x55
>  [<c0538dc5>] agp_add_bridge+0x29e/0x321
>  [<c04e86f8>] __pci_enable_device+0x20/0x25
>  [<c04e871a>] pci_enable_device+0x1d/0x2e
>  [<c053e6c6>] agp_intel_probe+0x4f2/0x553
>  [<c04ea88a>] pci_device_probe+0x36/0x57
>  [<c0544b5a>] really_probe+0x7f/0x103
>  [<c0544c22>] driver_probe_device+0x44/0xa5
>  [<c0417716>] __might_sleep+0x21/0xc1
>  [<c0544d11>] __driver_attach+0x0/0xab
>  [<c0544d84>] __driver_attach+0x73/0xab
>  [<c05441ac>] bus_for_each_dev+0x37/0x59
>  [<c0544a14>] driver_attach+0x16/0x18
>  [<c0544d11>] __driver_attach+0x0/0xab
>  [<c054447d>] bus_add_driver+0x61/0x165
>  [<c04ea9e6>] __pci_register_driver+0x73/0x9f
>  [<c04021d5>] init+0x1c1/0x370
>  [<c0404cc2>] ret_from_fork+0x6/0x1c
>  [<c0402014>] init+0x0/0x370
>  [<c0402014>] init+0x0/0x370
>  [<c0405173>] kernel_thread_helper+0x7/0x10
>  =======================
>  Code: 85 c0 75 13 8b 4e 14 8d 96 18 0e 00 00 89 f0 c1 e9 1a e8 12 ff 
>  ff ff ff 46 14 8d 0c de 8b 41 1
>  8 8d 51 18 8d 5c 24 10 89 44 24 10 <89> 58 04 8b 42 04 89 44 24 14 89 
>  18 89 52 04 89 51 18 eb 66 8b
>  EIP: [<c04248aa>] run_timer_softirq+0xb8/0x164 SS:ESP 0069:c0765fc0
>  <0>Kernel panic - not syncing: Fatal exception in interrupt
>  BUG: warning at arch/i386/kernel/smp-xen.c:530/smp_call_function() 
>  (Not tainted)
>  [<c040f1fe>] smp_call_function+0x67/0x108
>  [<c040f2ba>] smp_send_stop+0x1b/0x26
>  [<c041d3d5>] panic+0x4d/0x190
>  [<c0405b20>] die+0x1fb/0x22f
>  [<c061326f>] do_page_fault+0xab1/0xc2e
>  [<c041732d>] enqueue_task+0x29/0x39
>  [<c0417588>] __activate_task+0x1c/0x29
>  [<c06114ff>] _spin_unlock_irqrestore+0x8/0x16
>  [<c0418c85>] try_to_wake_up+0x344/0x34e
>  [<c06127be>] do_page_fault+0x0/0xc2e
>  [<c061162d>] error_code+0x35/0x3c
>  [<c04248aa>] run_timer_softirq+0xb8/0x164
>  [<c042bbad>] __rcu_process_callbacks+0xe1/0x16a
>  [<c0421c20>] __do_softirq+0x61/0xc2
>  [<c04067a2>] do_softirq+0x5d/0xc6
>  [<c041dec3>] printk+0x1f/0xa1
>  [<c0441c1d>] handle_level_irq+0x0/0xdf
>  [<c04068d1>] do_IRQ+0xc6/0xdd
>  [<c0548cf5>] evtchn_do_upcall+0x5f/0x97
>  [<c0404ff2>] hypervisor_callback+0x46/0x50
>  [<c0548630>] force_evtchn_callback+0xa/0xc
>  [<c0405ac3>] die+0x19e/0x22f
>  [<c061326f>] do_page_fault+0xab1/0xc2e
>  [<c0403f48>] __switch_to+0x34e/0x3be
>  [<c0403f48>] __switch_to+0x34e/0x3be
>  [<c06127be>] do_page_fault+0x0/0xc2e
>  [<c061162d>] error_code+0x35/0x3c
>  [<c04b81a0>] inode_has_perm+0x4c/0x63
>  [<c04bc519>] selinux_inode_permission+0x9e/0xa3
>  [<c046c9bf>] permission+0xc8/0xdb
>  [<c046d764>] __lookup_hash+0x1f/0xe1
>  [<c046dbe5>] lookup_one_len+0x4a/0x58
>  [<c049e40a>] create_dir+0x37/0x196
>  [<c049ea15>] sysfs_create_dir+0x45/0x5f
>  [<c04dd4f9>] kobject_add+0xd7/0x18e
>  [<c04dd741>] kobject_set_name+0x2b/0x92
>  [<c0542fb8>] device_add+0x8b/0x484
>  [<c042dc6e>] init_waitqueue_head+0x12/0x20
>  [<c054343b>] device_create+0x7a/0x9a
>  [<c052c7ba>] misc_register+0x105/0x13b
>  [<c0539574>] agp_frontend_initialize+0x30/0x55
>  [<c0538dc5>] agp_add_bridge+0x29e/0x321
>  [<c04e86f8>] __pci_enable_device+0x20/0x25
>  [<c04e871a>] pci_enable_device+0x1d/0x2e
>  [<c053e6c6>] agp_intel_probe+0x4f2/0x553
>  [<c04ea88a>] pci_device_probe+0x36/0x57
>  [<c0544b5a>] really_probe+0x7f/0x103
>  [<c0544c22>] driver_probe_device+0x44/0xa5
>  [<c0417716>] __might_sleep+0x21/0xc1
>  [<c0544d11>] __driver_attach+0x0/0xab
>  [<c0544d84>] __driver_attach+0x73/0xab
>  [<c05441ac>] bus_for_each_dev+0x37/0x59
>  [<c0544a14>] driver_attach+0x16/0x18
>  [<c0544d11>] __driver_attach+0x0/0xab
>  [<c054447d>] bus_add_driver+0x61/0x165
>  [<c04ea9e6>] __pci_register_driver+0x73/0x9f
>  [<c04021d5>] init+0x1c1/0x370
>  [<c0404cc2>] ret_from_fork+0x6/0x1c
>  [<c0402014>] init+0x0/0x370
>  [<c0402014>] init+0x0/0x370
>  [<c0405173>] kernel_thread_helper+0x7/0x10
>  =======================
>  (XEN) Domain 0 crashed: 'noreboot' set - not rebooting.
>
>  -- 
>  Fedora-xen mailing list
>  Fedora-xen(a)redhat.com
>  https://www.redhat.com/mailman/listinfo/fedora-xen

[Frank Rosendahl]

Did you get the same results with the kernel 2.6.19.6.5?

Try to use this one because it seems the 2.6.20 is allways crashing (also on 
my AMD 1000)

Am Donnerstag April 5 2007 schrieb George Shearer:
>  I can't seem to win.. with Xen... :-/
>
>  Ok, agp=no on the kernel command gets me past the agpgart crash listed
>  below. However... I am presented with another OOPS as soon as the kernel
>  in dom0 gets around to looking at my firewire-attached drives.
>
>  If I unplug my external firewire chassis, it actually completes booting
>  and everything seems ok.. However, the SECOND I plug my drives in, Xen
>  panics.. Here's the OOPS...
>
>  kernel BUG at lib/../arch/i386/kernel/swiotlb.c:394!
>  invalid opcode: 0000 [#1]
>  SMP
>  last sysfs file: /devices/pci0000:00/0000:00:00.0/irq
>  Modules linked in: sbp2 bridge netloop netbk blktap blkbk ipv6 dm_mirror
>  dm_mod raid1 raid0 video sb
>  s i2c_ec button battery asus_acpi ac parport_pc lp parport sg iTCO_wdt
>  ahci ide_cd ohci1394 i2c_i801
>   ieee1394 i2c_core cdrom serial_core pl2303 pcspkr sky2 usbserial floppy
>  ata_piix libata sd_mod scsi
>  _mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd
>  CPU:    0
>  EIP:    0061:[<c04ecaaf>]    Not tainted VLI
>  EFLAGS: 00010082   (2.6.19-1.2911.6.5.fc6xen #1)
>  EIP is at sync_single+0x46/0x72
>  eax: 00000043   ebx: c0aef000   ecx: c32c6700   edx: f5416000
>  esi: 0000ffff   edi: c1580040   ebp: 00000180   esp: ecbc8b08
>  ds: 007b   es: 007b   ss: 0069
>  Process modprobe (pid: 2680, ti=ecbc8000 task=c08729d0 task.ti=ecbc8000)
>  Stack: c0633172 c0647317 000007f8 c3c54800 c0aef000 0000ffff ece95c98
>  ec002080
>         eea6412e 00000000 00000000 00000024 c08729d0 00000000 ed6d8000
>  00000220
>         00011440 ec002000 c0832400 c74231f8 ecbc8b88 c061a5b2 c0832400
>  00000024
>  Call Trace:
>   [<eea6412e>] sbp2scsi_queuecommand+0x5d7/0x792 [sbp2]
>   [<ee065aa1>] scsi_dispatch_cmd+0x240/0x2be [scsi_mod]
>   [<ee06a4aa>] scsi_request_fn+0x27d/0x33a [scsi_mod]
>   [<c04da8b6>] __generic_unplug_device+0x1d/0x1f
>   [<c04da946>] blk_execute_rq_nowait+0x8e/0x9f
>   [<c04daa1f>] blk_execute_rq+0xc8/0xe5
>   [<ee069d75>] scsi_execute+0xdd/0xf1 [scsi_mod]
>   [<ee069e40>] scsi_execute_req+0xb7/0xd5 [scsi_mod]
>   [<ee06b251>] scsi_probe_and_add_lun+0x21c/0x93c [scsi_mod]
>   [<ee06c626>] __scsi_add_device+0x5d/0x7e [scsi_mod]
>   [<ee06c65f>] scsi_add_device+0x18/0x2a [scsi_mod]
>   [<eea637c6>] sbp2_probe+0x4ea/0x54f [sbp2]
>   [<c054c87c>] really_probe+0x39/0xda
>   [<c054cab3>] __driver_attach+0x73/0xab
>   [<c054bf8c>] bus_for_each_dev+0x37/0x59
>   [<c054c79f>] driver_attach+0x16/0x18
>   [<c054c25d>] bus_add_driver+0x61/0x165
>   [<ee19ca40>] hpsb_register_protocol+0xd/0x2f [ieee1394]
>   [<eea638aa>] sbp2_module_init+0x7f/0xa0 [sbp2]
>   [<c0439d2d>] sys_init_module+0x1806/0x19b1
>   [<c0404eff>] syscall_call+0x7/0xb
>   [<00959402>] 0x959402
>   =======================
>  Code: e0 03 03 05 4c 36 84 c0 8b 68 04 8b 38 8b 44 24 24 48 83 f8 01 76
>  1c c7 44 24 04 17 73 64 c0 c
>  7 04 24 72 31 63 c0 e8 52 1e f3 ff <0f> 0b 8a 01 4a 73 64 c0 8b 44 24 24
>  89 ea 8b 4c 24 0c 89 44 24
>  EIP: [<c04ecaaf>] sync_single+0x46/0x72 SS:ESP 0069:ecbc8b08
>   <3>BUG: sleeping function called from invalid context at kernel/rwsem.c:20
>  in_atomic():0, irqs_disabled():1
>   [<c0405703>] dump_trace+0x69/0x1b6
>   [<c0405868>] show_trace_log_lvl+0x18/0x2c
>   [<c0405e4f>] show_trace+0xf/0x11
>   [<c0405e7e>] dump_stack+0x15/0x17
>   [<c04332c2>] down_read+0x12/0x28
>   [<c042ad12>] blocking_notifier_call_chain+0xe/0x29
>   [<c0420dd1>] do_exit+0x1b/0x79b
>   [<c0405df0>] die+0x2af/0x2d4
>   [<c0406266>] do_invalid_op+0xa2/0xab
>   [<c061a783>] error_code+0x2b/0x30
>   [<c04ecaaf>] sync_single+0x46/0x72
>   [<eea6412e>] sbp2scsi_queuecommand+0x5d7/0x792 [sbp2]
>   [<ee065aa1>] scsi_dispatch_cmd+0x240/0x2be [scsi_mod]
>   [<ee06a4aa>] scsi_request_fn+0x27d/0x33a [scsi_mod]
>   [<c04da8b6>] __generic_unplug_device+0x1d/0x1f
>   [<c04da946>] blk_execute_rq_nowait+0x8e/0x9f
>   [<c04daa1f>] blk_execute_rq+0xc8/0xe5
>   [<ee069d75>] scsi_execute+0xdd/0xf1 [scsi_mod]
>   [<ee069e40>] scsi_execute_req+0xb7/0xd5 [scsi_mod]
>   [<ee06b251>] scsi_probe_and_add_lun+0x21c/0x93c [scsi_mod]
>   [<ee06c626>] __scsi_add_device+0x5d/0x7e [scsi_mod]
>   [<ee06c65f>] scsi_add_device+0x18/0x2a [scsi_mod]
>   [<eea637c6>] sbp2_probe+0x4ea/0x54f [sbp2]
>   [<c054c87c>] really_probe+0x39/0xda
>   [<c054cab3>] __driver_attach+0x73/0xab
>   [<c054bf8c>] bus_for_each_dev+0x37/0x59
>   [<c054c79f>] driver_attach+0x16/0x18
>   [<c054c25d>] bus_add_driver+0x61/0x165
>   [<ee19ca40>] hpsb_register_protocol+0xd/0x2f [ieee1394]
>   [<eea638aa>] sbp2_module_init+0x7f/0xa0 [sbp2]
>   [<c0439d2d>] sys_init_module+0x1806/0x19b1
>   [<c0404eff>] syscall_call+0x7/0xb
>   [<00959402>] 0x959402
>   =======================
>  BUG: spinlock lockup on CPU#0, swapper/0, ed6df034 (Not tainted)
>   [<c0405703>] dump_trace+0x69/0x1b6
>   [<c0405868>] show_trace_log_lvl+0x18/0x2c
>   [<c0405e4f>] show_trace+0xf/0x11
>   [<c0405e7e>] dump_stack+0x15/0x17
>   [<c04e992f>] _raw_spin_lock+0xbf/0xdc
>   [<c061a5b2>] _spin_lock_irqsave+0x12/0x17
>   [<ee0681ef>] scsi_eh_scmd_add+0x1f/0x78 [scsi_mod]
>   [<ee068293>] scsi_times_out+0x4b/0x63 [scsi_mod]
>   [<c0427bc3>] run_timer_softirq+0x105/0x16c
>   [<c0422ed5>] __do_softirq+0x5e/0xc3
>   [<c0406a3a>] do_softirq+0x59/0xca
>   =======================
>
>  George Shearer wrote:
>  > Hey All,
>  >
>  > Attempting to run FC6-xen on my system. It's currently running
>  > 2.6.20-1.2933.fc6.i686 happily. However, the XEN kernel panics on
>  > boot. I had to enable serial console in order to capture the dmesg for
>  > troubleshooting. I'd like your opinion of this output.
>  >
>  > Looks to me like it has something to do with agpgart. This is on a
>  > Gigabyte GA-965P-DS3 motherboard (rev 1.0, bios F10), with a Conroe
>  > E6400 and 4GB DDR2-800. ICH8 is the main northbridge, however, there's
>  > also a JMB363 AHCI IDE controller as well.
>  >
>  > A non-xen kernel agpgart section looks like this:
>  > Linux agpgart interface v0.101 (c) Dave Jones
>  > agpgart: Detected an Intel 965G Chipset.
>  > agpgart: AGP aperture is 256M @ 0x0
>  >
>  > However, as you will see, in the boot text below, the xen-kernel
>  > (dom0) seems to kernel panic right after this:
>  > Linux agpgart interface v0.101 (c) Dave Jones
>  > agpgart: Detected an Intel 965G Chipset.
>  > BUG: unable to handle kernel NULL pointer dereference at virtual
>  > address 00000008
>  > printing eip:
>  > c04b81a0
>  > .... cut
>  >
>  >
>  >
>  > Thank you for your time.
>  >
>  > __  __            _____  ___   _____     ___    __       __
>  > \ \/ /___ _ __   |___ / / _ \ |___ /    / _ \  / _| ___ / /_
>  >  \  // _ \ '_ \    |_ \| | | |  |_ \ __| | | || |_ / __| '_ \
>  >  /  \  __/ | | |  ___) | |_| | ___) |__| |_| ||  _| (__| (_) |
>  > /_/\_\___|_| |_| |____(_)___(_)____/    \___(_)_|  \___|\___/
>  >
>  > http://www.cl.cam.ac.uk/netos/xen
>  > University of Cambridge Computer Laboratory
>  >
>  > Xen version 3.0.3-0-1.2933.fc6 (brewbuilder(a)build.redhat.com) (gcc
>  > version 4.1.1 20070105 (Red Hat
>  > 4.1.1-51)) Mon Mar 19 10:39:57 EDT 2007
>  > Latest ChangeSet: unavailable
>  >
>  > (XEN) Command line: /boot/xen.gz-2.6.20-1.2933.fc6 noreboot
>  > com1=115200,8n1
>  > (XEN) Physical RAM map:
>  > (XEN)  0000000000000000 - 000000000009f800 (usable)
>  > (XEN)  000000000009f800 - 00000000000a0000 (reserved)
>  > (XEN)  00000000000f0000 - 0000000000100000 (reserved)
>  > (XEN)  0000000000100000 - 00000000cfee0000 (usable)
>  > (XEN)  00000000cfee0000 - 00000000cfee3000 (ACPI NVS)
>  > (XEN)  00000000cfee3000 - 00000000cfef0000 (ACPI data)
>  > (XEN)  00000000cfef0000 - 00000000cff00000 (reserved)
>  > (XEN)  00000000e0000000 - 00000000e4000000 (reserved)
>  > (XEN)  00000000fec00000 - 0000000100000000 (reserved)
>  > (XEN)  0000000100000000 - 0000000130000000 (usable)
>  > (XEN) System RAM: 4094MB (4192764kB)
>  > (XEN) Xen heap: 9MB (10224kB)
>  > (XEN) PAE enabled, limit: 16 GB
>  > (XEN) found SMP MP-table at 000f5310
>  > (XEN) DMI 2.4 present.
>  > (XEN) Using APIC driver default
>  > (XEN) ACPI: RSDP (v000 GBT                                   ) @
>  > 0x000f6ca0
>  > (XEN) ACPI: RSDT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @
>  > 0xcfee3040
>  > (XEN) ACPI: FADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @
>  > 0xcfee30c0
>  > (XEN) ACPI: HPET (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x00000098) @
>  > 0xcfee7cc0
>  > (XEN) ACPI: MCFG (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @
>  > 0xcfee7d40
>  > (XEN) ACPI: MADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @
>  > 0xcfee7bc0
>  > (XEN) ACPI: SSDT (v001  PmRef  Cpu0Ist 0x00003000 INTL 0x20040311) @
>  > 0xcfee7dc0
>  > (XEN) ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20040311) @
>  > 0xcfee8250
>  > (XEN) ACPI: DSDT (v001 GBT    GBTUACPI 0x00001000 MSFT 0x0100000c) @
>  > 0x00000000
>  > (XEN) ACPI: Local APIC address 0xfee00000
>  > (XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>  > (XEN) Processor #0 6:15 APIC version 20
>  > (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
>  > (XEN) Processor #1 6:15 APIC version 20
>  > (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
>  > (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
>  > (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
>  > (XEN) ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
>  > (XEN) ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
>  > (XEN) ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
>  > (XEN) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
>  > (XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
>  > (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
>  > (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
>  > (XEN) ACPI: IRQ0 used by override.
>  > (XEN) ACPI: IRQ2 used by override.
>  > (XEN) ACPI: IRQ9 used by override.
>  > (XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
>  > (XEN) ACPI: HPET id: 0x8086a201 base: 0xfed00000
>  > (XEN) Using ACPI (MADT) for SMP configuration information
>  > (XEN) Using scheduler: SMP Credit Scheduler (credit)
>  > (XEN) Initializing CPU#0
>  > (XEN) Detected 3200.037 MHz processor.
>  > (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>  > (XEN) CPU: L2 cache: 2048K
>  > (XEN) CPU: Physical Processor ID: 0
>  > (XEN) CPU: Processor Core ID: 0
>  > (XEN) VMXON is done
>  > (XEN) Intel machine check architecture supported.
>  > (XEN) Intel machine check reporting enabled on CPU#0.
>  > (XEN) CPU0: Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz stepping 06
>  > (XEN) Booting processor 1/1 eip 90000
>  > (XEN) Initializing CPU#1
>  > (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>  > (XEN) CPU: L2 cache: 2048K
>  > (XEN) CPU: Physical Processor ID: 0
>  > (XEN) CPU: Processor Core ID: 1
>  > (XEN) VMXON is done
>  > (XEN) Intel machine check architecture supported.
>  > (XEN) Intel machine check reporting enabled on CPU#1.
>  > (XEN) CPU1: Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz stepping 06
>  > (XEN) Total of 2 processors activated.
>  > (XEN) ENABLING IO-APIC IRQs
>  > (XEN)  -> Using new ACK method
>  > (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
>  > (XEN) checking TSC synchronization across 2 CPUs: passed.
>  > (XEN) Platform timer is 14.318MHz HPET
>  > (XEN) Brought up 2 CPUs
>  > (XEN) Machine check exception polling timer started.
>  > (XEN) mtrr: your CPUs had inconsistent variable MTRR settings
>  > (XEN) mtrr: probably your BIOS does not setup all CPUs.
>  > (XEN) mtrr: corrected configuration.
>  > (XEN) *** LOADING DOMAIN 0 ***
>  > (XEN) Domain 0 kernel supports features = { 0000001f }.
>  > (XEN) Domain 0 kernel requires features = { 00000000 }.
>  > (XEN) PHYSICAL MEMORY ARRANGEMENT:
>  > (XEN)  Dom0 alloc.:   0000000007000000->0000000008000000 (999519 pages
>  > to be allocated)
>  > (XEN) VIRTUAL MEMORY ARRANGEMENT:
>  > (XEN)  Loaded kernel: c0400000->c07fe000
>  > (XEN)  Init. ramdisk: c07fe000->c0b48200
>  > (XEN)  Phys-Mach map: c0b49000->c0f1d17c
>  > (XEN)  Start info:    c0f1e000->c0f1e46c
>  > (XEN)  Page tables:   c0f1f000->c0f2c000
>  > (XEN)  Boot stack:    c0f2c000->c0f2d000
>  > (XEN)  TOTAL:         c0000000->c1000000
>  > (XEN)  ENTRY ADDRESS: c0400000
>  > (XEN) Dom0 has maximum 2 VCPUs
>  > (XEN) Initrd len 0x34a200, start at 0xc07fe000
>  > (XEN) Scrubbing Free RAM:
>  > .................................................done.
>  > (XEN) Xen trace buffers: disabled
>  > (XEN) Xen is relinquishing VGA console.
>  > (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
>  > input to Xen).
>  > Linux version 2.6.20-1.2933.fc6xen
>  > (brewbuilder(a)hs20-bc2-4.build.redhat.com) (gcc version 4.1.1 2007
>  > 0105 (Red Hat 4.1.1-51)) #1 SMP Mon Mar 19 12:00:20 EDT 2007
>  > BIOS-provided physical RAM map:
>  > sanitize start
>  > sanitize bail 0
>  > copy_e820_map() start: 0000000000000000 size: 00000000f585f000 end:
>  > 00000000f585f000 type: 1
>  > Xen: 0000000000000000 - 00000000f585f000 (usable)
>  > 3200MB HIGHMEM available.
>  > 727MB LOWMEM available.
>  > NX (Execute Disable) protection: active
>  > Entering add_active_range(0, 0, 1005663) 0 entries of 256 used
>  > Zone PFN ranges:
>  >  DMA             0 ->   186366
>  >  Normal     186366 ->   186366
>  >  HighMem    186366 ->  1005663
>  > early_node_map[1] active PFN ranges
>  >    0:        0 ->  1005663
>  > On node 0 totalpages: 1005663
>  >  DMA zone: 1455 pages used for memmap
>  >  DMA zone: 0 pages reserved
>  >  DMA zone: 184911 pages, LIFO batch:31
>  >  Normal zone: 0 pages used for memmap
>  >  HighMem zone: 6400 pages used for memmap
>  >  HighMem zone: 812897 pages, LIFO batch:31
>  > found SMP MP-table at 000f5310
>  > DMI 2.4 present.
>  > ACPI: RSDP (v000 GBT                                   ) @ 0x000f6ca0
>  > ACPI: RSDT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee3040
>  > ACPI: FADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee30c0
>  > ACPI: HPET (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x00000098) @ 0xcfee7cc0
>  > ACPI: MCFG (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee7d40
>  > ACPI: MADT (v001 GBT    GBTUACPI 0x42302e31 GBTU 0x01010101) @ 0xcfee7bc0
>  > ACPI: SSDT (v001  PmRef  Cpu0Ist 0x00003000 INTL 0x20040311) @ 0xcfee7dc0
>  > ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20040311) @ 0xcfee8250
>  > ACPI: DSDT (v001 GBT    GBTUACPI 0x00001000 MSFT 0x0100000c) @ 0x00000000
>  > ACPI: Local APIC address 0xfee00000
>  > ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>  > ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
>  > ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
>  > ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
>  > ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
>  > ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
>  > ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
>  > ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
>  > ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
>  > IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
>  > ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
>  > ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
>  > ACPI: IRQ0 used by override.
>  > ACPI: IRQ2 used by override.
>  > ACPI: IRQ9 used by override.
>  > Enabling APIC mode:  Flat.  Using 1 I/O APICs
>  > Using ACPI (MADT) for SMP configuration information
>  > Built 1 zonelists.  Total pages: 997808
>  > Kernel command line: ro root=LABEL=/ noreboot console=ttyS0,115200n8
>  > debug
>  > Enabling fast FPU save and restore... done.
>  > Enabling unmasked SIMD FPU exception support... done.
>  > Initializing CPU#0
>  > CPU 0 irqstacks, hard=c0784000 soft=c0764000
>  > PID hash table entries: 4096 (order: 12, 16384 bytes)
>  > Xen reported: 3200.036 MHz processor.
>  > Console: colour VGA+ 80x25
>  > Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
>  > Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
>  > Software IO TLB enabled:
>  > Aperture:     64 megabytes
>  > Kernel range: 0x00000000c3396000 - 0x00000000c7396000
>  > vmalloc area: ee000000-f4ffe000, maxmem 2d7fe000
>  > Memory: 3901868k/4022652k available (2132k kernel code, 111384k
>  > reserved, 1129k data, 176k init, 327
>  > 7188k highmem)
>  > virtual kernel memory layout:
>  >    fixmap  : 0xf5315000 - 0xf57fe000   (5028 kB)
>  >    pkmap   : 0xf5000000 - 0xf5200000   (2048 kB)
>  >    vmalloc : 0xee000000 - 0xf4ffe000   ( 111 MB)
>  >    lowmem  : 0xc0000000 - 0xed7fe000   ( 727 MB)
>  >      .init : 0xc0734000 - 0xc0760000   ( 176 kB)
>  >      .data : 0xc0615256 - 0xc072f794   (1129 kB)
>  >      .text : 0xc0400000 - 0xc0615256   (2132 kB)
>  > Checking if this processor honours the WP bit even in supervisor
>  > mode... Ok.
>  > Calibrating delay using timer specific routine.. 8001.68 BogoMIPS
>  > (lpj=16003363)
>  > Security Framework v1.0.0 initialized
>  > SELinux:  Initializing.
>  > SELinux:  Starting in permissive mode
>  > selinux_register_security:  Registering secondary module capability
>  > Capability LSM initialized as secondary
>  > Mount-cache hash table entries: 512
>  > CPU: After generic identify, caps: bfebd3f1 20100000 00000000 00000000
>  > 0000e3bd 00000000 00000001
>  > CPU: L1 I cache: 32K, L1 D cache: 32K
>  > CPU: L2 cache: 2048K
>  > CPU: After all inits, caps: bfebd3f1 20100000 00000000 00003940
>  > 0000e3bd 00000000 00000001
>  > Checking 'hlt' instruction... OK.
>  > SMP alternatives: switching to UP code
>  > ACPI: Core revision 20060707
>  > CPU 1 irqstacks, hard=c0785000 soft=c0765000
>  > ENABLING IO-APIC IRQs
>  > SMP alternatives: switching to SMP code
>  > Brought up 2 CPUs
>  > Initializing CPU#1
>  > sizeof(vma)=88 bytes
>  > sizeof(page)=32 bytes
>  > sizeof(inode)=420 bytes
>  > sizeof(dentry)=144 bytes
>  > sizeof(ext3inode)=596 bytes
>  > sizeof(buffer_head)=56 bytes
>  > sizeof(skbuff)=176 bytes
>  > sizeof(task_struct)=1408 bytes
>  > migration_cost=10
>  > Grant table initialized
>  > NET: Registered protocol family 16
>  > ACPI: bus type pci registered
>  > PCI: BIOS Bug: MCFG area at e0000000 is not E820-reserved
>  > PCI: Not using MMCONFIG.
>  > PCI: Using configuration type 1
>  > Setting up standard PCI resources
>  > Allocating PCI resources starting at e6000000 (gap: e4000000:1ac00000)
>  > ACPI: Interpreter enabled
>  > ACPI: Using IOAPIC for interrupt routing
>  > ACPI: PCI Root Bridge [PCI0] (0000:00)
>  > PCI: Probing PCI hardware (bus 00)
>  > PCI quirk: region 0400-047f claimed by ICH6 ACPI/GPIO/TCO
>  > PCI quirk: region 0480-04bf claimed by ICH6 GPIO
>  > Boot video device is 0000:01:00.0
>  > 0000:05:00.0: cannot adjust BAR2 (not I/O)
>  > 0000:05:00.0: cannot adjust BAR3 (not I/O)
>  > PCI: Transparent bridge - 0000:00:1e.0
>  > ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
>  > ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX0._PRT]
>  > ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX1._PRT]
>  > ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX3._PRT]
>  > ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX4._PRT]
>  > ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT]
>  > ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
>  > ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 11 12 *14 15)
>  > ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 11 *12 14 15)
>  > ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 11 12 14 *15)
>  > ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 *10 11 12 14 15)
>  > ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 *7 9 10 11 12 14 15)
>  > ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0,
>  > disabled.
>  > ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 *5 6 7 9 10 11 12 14 15)
>  > Linux Plug and Play Support v0.97 (c) Adam Belay
>  > pnp: PnP ACPI init
>  > (XEN) (file=io_apic.c, line=2067)
>  > (XEN) ioapic_guest_write: apic=0, pin=4, old_irq=4, new_irq=4
>  > (XEN) ioapic_guest_write: old_entry=000009f1, new_entry=000109f1
>  > (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
>  > pnp: PnP ACPI: found 13 devices
>  > xen_mem: Initialising balloon driver.
>  > usbcore: registered new interface driver usbfs
>  > usbcore: registered new interface driver hub
>  > usbcore: registered new device driver usb
>  > PCI: Using ACPI for IRQ routing
>  > PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post
>  > a report
>  > PCI: Cannot allocate resource region 2 of device 0000:05:00.0
>  > PCI: Cannot allocate resource region 3 of device 0000:05:00.0
>  > NetLabel: Initializing
>  > NetLabel:  domain hash size = 128
>  > NetLabel:  protocols = UNLABELED CIPSOv4
>  > NetLabel:  unlabeled traffic allowed by default
>  > pnp: 00:09: ioport range 0x400-0x4bf could not be reserved
>  > PCI: Bridge: 0000:00:01.0
>  >  IO window: disabled.
>  >  MEM window: f2000000-f4ffffff
>  >  PREFETCH window: d0000000-dfffffff
>  > PCI: Bridge: 0000:00:1c.0
>  >  IO window: 6000-6fff
>  >  MEM window: disabled.
>  >  PREFETCH window: disabled.
>  > PCI: Bridge: 0000:03:00.0
>  >  IO window: disabled.
>  >  MEM window: f5000000-f50fffff
>  >  PREFETCH window: disabled.
>  > PCI: Bridge: 0000:00:1c.1
>  >  IO window: disabled.
>  >  MEM window: f5000000-f50fffff
>  >  PREFETCH window: disabled.
>  > PCI: Bridge: 0000:00:1c.3
>  >  IO window: 7000-8fff
>  >  MEM window: f5100000-f51fffff
>  >  PREFETCH window: disabled.
>  > PCI: Bridge: 0000:00:1c.4
>  >  IO window: 9000-9fff
>  >  MEM window: f0000000-f1ffffff
>  >  PREFETCH window: f5300000-f53fffff
>  > PCI: Bridge: 0000:00:1e.0
>  >  IO window: disabled.
>  >  MEM window: disabled.
>  >  PREFETCH window: e4000000-efffffff
>  > ACPI: PCI Interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 16
>  > PCI: Setting latency timer of device 0000:00:01.0 to 64
>  > ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 16 (level, low) -> IRQ 16
>  > PCI: Setting latency timer of device 0000:00:1c.0 to 64
>  > ACPI: PCI Interrupt 0000:00:1c.1[B] -> GSI 17 (level, low) -> IRQ 17
>  > PCI: Setting latency timer of device 0000:00:1c.1 to 64
>  > PCI: Setting latency timer of device 0000:03:00.0 to 64
>  > ACPI: PCI Interrupt 0000:00:1c.3[D] -> GSI 19 (level, low) -> IRQ 18
>  > PCI: Setting latency timer of device 0000:00:1c.3 to 64
>  > ACPI: PCI Interrupt 0000:00:1c.4[A] -> GSI 16 (level, low) -> IRQ 16
>  > PCI: Setting latency timer of device 0000:00:1c.4 to 64
>  > PCI: Setting latency timer of device 0000:00:1e.0 to 64
>  > NET: Registered protocol family 2
>  > IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
>  > TCP established hash table entries: 131072 (order: 9, 2621440 bytes)
>  > TCP bind hash table entries: 65536 (order: 8, 1310720 bytes)
>  > TCP: Hash tables configured (established 131072 bind 65536)
>  > TCP reno registered
>  > checking if image is initramfs... it is
>  > Freeing initrd memory: 3368k freed
>  > IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com&gt;
>  > audit: initializing netlink socket (disabled)
>  > audit(1175680668.712:1): initialized
>  > highmem bounce pool size: 64 pages
>  > VFS: Disk quotas dquot_6.5.1
>  > Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
>  > SELinux:  Registering netfilter hooks
>  > ksign: Installing public key data
>  > Loading keyring
>  > - Added public key A99AD4F3D245F54
>  > - User ID: Red Hat, Inc. (Kernel Module GPG key)
>  > io scheduler noop registered
>  > io scheduler anticipatory registered
>  > io scheduler deadline registered
>  > io scheduler cfq registered (default)
>  > PCI: Setting latency timer of device 0000:00:01.0 to 64
>  > assign_interrupt_mode Found MSI capability
>  > Allocate Port Service[0000:00:01.0:pcie00]
>  > PCI: Setting latency timer of device 0000:00:1c.0 to 64
>  > assign_interrupt_mode Found MSI capability
>  > Allocate Port Service[0000:00:1c.0:pcie00]
>  > Allocate Port Service[0000:00:1c.0:pcie02]
>  > PCI: Setting latency timer of device 0000:00:1c.1 to 64
>  > assign_interrupt_mode Found MSI capability
>  > Allocate Port Service[0000:00:1c.1:pcie00]
>  > Allocate Port Service[0000:00:1c.1:pcie02]
>  > PCI: Setting latency timer of device 0000:00:1c.3 to 64
>  > assign_interrupt_mode Found MSI capability
>  > Allocate Port Service[0000:00:1c.3:pcie00]
>  > Allocate Port Service[0000:00:1c.3:pcie02]
>  > PCI: Setting latency timer of device 0000:00:1c.4 to 64
>  > assign_interrupt_mode Found MSI capability
>  > Allocate Port Service[0000:00:1c.4:pcie00]
>  > Allocate Port Service[0000:00:1c.4:pcie02]
>  > pci_hotplug: PCI Hot Plug PCI Core version: 0.5
>  > ACPI: Processor [CPU0] (supports 2 throttling states)
>  > ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [
>  > Cpu1Ist] [20060707]
>  > ACPI: Processor [CPU1] (supports 2 throttling states)
>  > ACPI Exception (acpi_processor-0677): AE_NOT_FOUND, Processor Device
>  > is not present [20060707]
>  > ACPI Exception (acpi_processor-0677): AE_NOT_FOUND, Processor Device
>  > is not present [20060707]
>  > Real Time Clock Driver v1.12ac
>  > Non-volatile memory driver v1.2
>  > Linux agpgart interface v0.101 (c) Dave Jones
>  > agpgart: Detected an Intel 965G Chipset.
>  > BUG: unable to handle kernel NULL pointer dereference at virtual
>  > address 00000008
>  > printing eip:
>  > c04b81a0
>  > 00f1f000 -> *pde = 00000000:07f20001
>  > 00f20000 -> *pme = 00000000:00000000
>  > Oops: 0000 [#1]
>  > SMP
>  > last sysfs file:
>  > Modules linked in:
>  > CPU:    1
>  > EIP:    0061:[<c04b81a0>]    Not tainted VLI
>  > EFLAGS: 00010246   (2.6.20-1.2933.fc6xen #1)
>  > EIP is at inode_has_perm+0x4c/0x63
>  > eax: c0fd2780   ebx: c0f16d38   ecx: 00000007   edx: 00000003
>  > esi: 00000000   edi: c0f16d70   ebp: 00100000   esp: c0f16d28
>  > ds: 007b   es: 007b   ss: 0069
>  > Process  (pid: 0, ti=c0f16000 task=ed7c1630 task.ti=c0f16000)
>  > Stack: ed7c1630 c32aea88 c0fd2780 c0f16d38 00000001 00000000 00000000
>  > 00000000
>  >       c0b8cbfc 00000000 00000000 00000000 00000000 00000000 00000000
>  > 00000000
>  >       00000000 00000000 c06f3140 00000000 c0b8cbfc 00000001 c04bc519
>  > 00000000
>  > Call Trace:
>  > [<c04bc519>] selinux_inode_permission+0x9e/0xa3
>  > [<c046c9bf>] permission+0xc8/0xdb
>  > [<c046d764>] __lookup_hash+0x1f/0xe1
>  > [<c046dbe5>] lookup_one_len+0x4a/0x58
>  > [<c049e40a>] create_dir+0x37/0x196
>  > [<c049ea15>] sysfs_create_dir+0x45/0x5f
>  > [<c04dd4f9>] kobject_add+0xd7/0x18e
>  > [<c04dd741>] kobject_set_name+0x2b/0x92
>  > [<c0542fb8>] device_add+0x8b/0x484
>  > [<c042dc6e>] init_waitqueue_head+0x12/0x20
>  > [<c054343b>] device_create+0x7a/0x9a
>  > [<c052c7ba>] misc_register+0x105/0x13b
>  > [<c0539574>] agp_frontend_initialize+0x30/0x55
>  > [<c0538dc5>] agp_add_bridge+0x29e/0x321
>  > [<c04e86f8>] __pci_enable_device+0x20/0x25
>  > [<c04e871a>] pci_enable_device+0x1d/0x2e
>  > [<c053e6c6>] agp_intel_probe+0x4f2/0x553
>  > [<c04ea88a>] pci_device_probe+0x36/0x57
>  > [<c0544b5a>] really_probe+0x7f/0x103
>  > [<c0544c22>] driver_probe_device+0x44/0xa5
>  > [<c0417716>] __might_sleep+0x21/0xc1
>  > [<c0544d11>] __driver_attach+0x0/0xab
>  > [<c0544d84>] __driver_attach+0x73/0xab
>  > [<c05441ac>] bus_for_each_dev+0x37/0x59
>  > [<c0544a14>] driver_attach+0x16/0x18
>  > [<c0544d11>] __driver_attach+0x0/0xab
>  > [<c054447d>] bus_add_driver+0x61/0x165
>  > [<c04ea9e6>] __pci_register_driver+0x73/0x9f
>  > [<c04021d5>] init+0x1c1/0x370
>  > [<c0404cc2>] ret_from_fork+0x6/0x1c
>  > [<c0402014>] init+0x0/0x370
>  > [<c0402014>] init+0x0/0x370
>  > [<c0405173>] kernel_thread_helper+0x7/0x10
>  > =======================
>  > Code: 8d 44 24 10 b9 0e 00 00 00 89 44 24 0c 89 c7 89 d8 f3 ab c6 44
>  > 24 10 01 8d 5c 24 10 89 54 24 2
>  > 0 8b 44 24 08 0f b7 48 14 8b 50 10 <8b> 46 08 89 5c 24 04 89 2c 24 e8
>  > 38 f9 ff ff 83 c4 48 5b 5e 5f
>  > EIP: [<c04b81a0>] inode_has_perm+0x4c/0x63 SS:ESP 0069:c0f16d28
>  > <1>BUG: unable to handle kernel NULL pointer dereference at virtual
>  > address 00000004
>  > printing eip:
>  > c04248aa
>  > 00f1f000 -> *pde = 00000000:07f20001
>  > 00f20000 -> *pme = 00000000:00000000
>  > Oops: 0002 [#2]
>  > SMP
>  > last sysfs file:
>  > Modules linked in:
>  > CPU:    1
>  > EIP:    0061:[<c04248aa>]    Not tainted VLI
>  > EFLAGS: 00010086   (2.6.20-1.2933.fc6xen #1)
>  > EIP is at run_timer_softirq+0xb8/0x164
>  > eax: 00000000   ebx: c0765fd0   ecx: ed7c45e8   edx: ed7c4600
>  > esi: ed7c4000   edi: 0000000a   ebp: 00000001   esp: c0765fc0
>  > ds: 007b   es: 007b   ss: 0069
>  > Process  (pid: 0, ti=c0765000 task=ed7c1630 task.ti=c0f16000)
>  > Stack: c06e8200 c06e8200 c042bbad c32b737c 00000000 c0765fd0 00000031
>  > c071b108
>  >       0000000a 00000001 c0421c20 c0f16b74 c0f16000 00000001 ffffffff
>  > c04067a2
>  > Call Trace:
>  > [<c042bbad>] __rcu_process_callbacks+0xe1/0x16a
>  > [<c0421c20>] __do_softirq+0x61/0xc2
>  > [<c04067a2>] do_softirq+0x5d/0xc6
>  > [<c041dec3>] printk+0x1f/0xa1
>  > [<c0441c1d>] handle_level_irq+0x0/0xdf
>  > [<c04068d1>] do_IRQ+0xc6/0xdd
>  > [<c0548cf5>] evtchn_do_upcall+0x5f/0x97
>  > [<c0404ff2>] hypervisor_callback+0x46/0x50
>  > [<c0548630>] force_evtchn_callback+0xa/0xc
>  > [<c0405ac3>] die+0x19e/0x22f
>  > [<c061326f>] do_page_fault+0xab1/0xc2e
>  > [<c0403f48>] __switch_to+0x34e/0x3be
>  > [<c0403f48>] __switch_to+0x34e/0x3be
>  > [<c06127be>] do_page_fault+0x0/0xc2e
>  > [<c061162d>] error_code+0x35/0x3c
>  > [<c04b81a0>] inode_has_perm+0x4c/0x63
>  > [<c04bc519>] selinux_inode_permission+0x9e/0xa3
>  > [<c046c9bf>] permission+0xc8/0xdb
>  > [<c046d764>] __lookup_hash+0x1f/0xe1
>  > [<c046dbe5>] lookup_one_len+0x4a/0x58
>  > [<c049e40a>] create_dir+0x37/0x196
>  > [<c049ea15>] sysfs_create_dir+0x45/0x5f
>  > [<c04dd4f9>] kobject_add+0xd7/0x18e
>  > [<c04dd741>] kobject_set_name+0x2b/0x92
>  > [<c0542fb8>] device_add+0x8b/0x484
>  > [<c042dc6e>] init_waitqueue_head+0x12/0x20
>  > [<c054343b>] device_create+0x7a/0x9a
>  > [<c052c7ba>] misc_register+0x105/0x13b
>  > [<c0539574>] agp_frontend_initialize+0x30/0x55
>  > [<c0538dc5>] agp_add_bridge+0x29e/0x321
>  > [<c04e86f8>] __pci_enable_device+0x20/0x25
>  > [<c04e871a>] pci_enable_device+0x1d/0x2e
>  > [<c053e6c6>] agp_intel_probe+0x4f2/0x553
>  > [<c04ea88a>] pci_device_probe+0x36/0x57
>  > [<c0544b5a>] really_probe+0x7f/0x103
>  > [<c0544c22>] driver_probe_device+0x44/0xa5
>  > [<c0417716>] __might_sleep+0x21/0xc1
>  > [<c0544d11>] __driver_attach+0x0/0xab
>  > [<c0544d84>] __driver_attach+0x73/0xab
>  > [<c05441ac>] bus_for_each_dev+0x37/0x59
>  > [<c0544a14>] driver_attach+0x16/0x18
>  > [<c0544d11>] __driver_attach+0x0/0xab
>  > [<c054447d>] bus_add_driver+0x61/0x165
>  > [<c04ea9e6>] __pci_register_driver+0x73/0x9f
>  > [<c04021d5>] init+0x1c1/0x370
>  > [<c0404cc2>] ret_from_fork+0x6/0x1c
>  > [<c0402014>] init+0x0/0x370
>  > [<c0402014>] init+0x0/0x370
>  > [<c0405173>] kernel_thread_helper+0x7/0x10
>  > =======================
>  > Code: 85 c0 75 13 8b 4e 14 8d 96 18 0e 00 00 89 f0 c1 e9 1a e8 12 ff
>  > ff ff ff 46 14 8d 0c de 8b 41 1
>  > 8 8d 51 18 8d 5c 24 10 89 44 24 10 <89> 58 04 8b 42 04 89 44 24 14 89
>  > 18 89 52 04 89 51 18 eb 66 8b
>  > EIP: [<c04248aa>] run_timer_softirq+0xb8/0x164 SS:ESP 0069:c0765fc0
>  > <0>Kernel panic - not syncing: Fatal exception in interrupt
>  > BUG: warning at arch/i386/kernel/smp-xen.c:530/smp_call_function()
>  > (Not tainted)
>  > [<c040f1fe>] smp_call_function+0x67/0x108
>  > [<c040f2ba>] smp_send_stop+0x1b/0x26
>  > [<c041d3d5>] panic+0x4d/0x190
>  > [<c0405b20>] die+0x1fb/0x22f
>  > [<c061326f>] do_page_fault+0xab1/0xc2e
>  > [<c041732d>] enqueue_task+0x29/0x39
>  > [<c0417588>] __activate_task+0x1c/0x29
>  > [<c06114ff>] _spin_unlock_irqrestore+0x8/0x16
>  > [<c0418c85>] try_to_wake_up+0x344/0x34e
>  > [<c06127be>] do_page_fault+0x0/0xc2e
>  > [<c061162d>] error_code+0x35/0x3c
>  > [<c04248aa>] run_timer_softirq+0xb8/0x164
>  > [<c042bbad>] __rcu_process_callbacks+0xe1/0x16a
>  > [<c0421c20>] __do_softirq+0x61/0xc2
>  > [<c04067a2>] do_softirq+0x5d/0xc6
>  > [<c041dec3>] printk+0x1f/0xa1
>  > [<c0441c1d>] handle_level_irq+0x0/0xdf
>  > [<c04068d1>] do_IRQ+0xc6/0xdd
>  > [<c0548cf5>] evtchn_do_upcall+0x5f/0x97
>  > [<c0404ff2>] hypervisor_callback+0x46/0x50
>  > [<c0548630>] force_evtchn_callback+0xa/0xc
>  > [<c0405ac3>] die+0x19e/0x22f
>  > [<c061326f>] do_page_fault+0xab1/0xc2e
>  > [<c0403f48>] __switch_to+0x34e/0x3be
>  > [<c0403f48>] __switch_to+0x34e/0x3be
>  > [<c06127be>] do_page_fault+0x0/0xc2e
>  > [<c061162d>] error_code+0x35/0x3c
>  > [<c04b81a0>] inode_has_perm+0x4c/0x63
>  > [<c04bc519>] selinux_inode_permission+0x9e/0xa3
>  > [<c046c9bf>] permission+0xc8/0xdb
>  > [<c046d764>] __lookup_hash+0x1f/0xe1
>  > [<c046dbe5>] lookup_one_len+0x4a/0x58
>  > [<c049e40a>] create_dir+0x37/0x196
>  > [<c049ea15>] sysfs_create_dir+0x45/0x5f
>  > [<c04dd4f9>] kobject_add+0xd7/0x18e
>  > [<c04dd741>] kobject_set_name+0x2b/0x92
>  > [<c0542fb8>] device_add+0x8b/0x484
>  > [<c042dc6e>] init_waitqueue_head+0x12/0x20
>  > [<c054343b>] device_create+0x7a/0x9a
>  > [<c052c7ba>] misc_register+0x105/0x13b
>  > [<c0539574>] agp_frontend_initialize+0x30/0x55
>  > [<c0538dc5>] agp_add_bridge+0x29e/0x321
>  > [<c04e86f8>] __pci_enable_device+0x20/0x25
>  > [<c04e871a>] pci_enable_device+0x1d/0x2e
>  > [<c053e6c6>] agp_intel_probe+0x4f2/0x553
>  > [<c04ea88a>] pci_device_probe+0x36/0x57
>  > [<c0544b5a>] really_probe+0x7f/0x103
>  > [<c0544c22>] driver_probe_device+0x44/0xa5
>  > [<c0417716>] __might_sleep+0x21/0xc1
>  > [<c0544d11>] __driver_attach+0x0/0xab
>  > [<c0544d84>] __driver_attach+0x73/0xab
>  > [<c05441ac>] bus_for_each_dev+0x37/0x59
>  > [<c0544a14>] driver_attach+0x16/0x18
>  > [<c0544d11>] __driver_attach+0x0/0xab
>  > [<c054447d>] bus_add_driver+0x61/0x165
>  > [<c04ea9e6>] __pci_register_driver+0x73/0x9f
>  > [<c04021d5>] init+0x1c1/0x370
>  > [<c0404cc2>] ret_from_fork+0x6/0x1c
>  > [<c0402014>] init+0x0/0x370
>  > [<c0402014>] init+0x0/0x370
>  > [<c0405173>] kernel_thread_helper+0x7/0x10
>  > =======================
>  > (XEN) Domain 0 crashed: 'noreboot' set - not rebooting.
>  >
>  > --
>  > Fedora-xen mailing list
>  > Fedora-xen(a)redhat.com
>  > https://www.redhat.com/mailman/listinfo/fedora-xen
>
>  --
>  Fedora-xen mailing list
>  Fedora-xen(a)redhat.com
>  https://www.redhat.com/mailman/listinfo/fedora-xen 


-- 
Gruß

Frank Rosendahl

Fingerprint: 7506 6D0F 2C79 09A6 A8CF E51D BEF0 0279 A989 8450

[Daniel P. Berrange]

On Thu, Apr 05, 2007 at 06:42:24AM +0200, Frank Rosendahl wrote:
>  Did you get the same results with the kernel 2.6.19.6.5?
>  
>  Try to use this one because it seems the 2.6.20 is allways crashing (also on 
>  my AMD 1000) 
Yes, as many people have pointed out on list & bz there's been some rather
bad instability issues with 2.6.20  based Xen. We're trying to track down
the problems & resolve them so we can get back a stable Xen kernel again.
If anyone captures kernel panic dumps please report in BZ so we can track
them.

Regards,
Dan.
-- 
|=- Red Hat, Engineering, Emerging Technologies, Boston.  [phone] -=|
|=-           Perl modules: http://search.cpan.org/~danberr/              -=|
|=-               Projects: http://freshmeat.net/~danielpb/               -=|
|=-  GnuPG: 7D3B9505   F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505  -=|

[Adrian Chadd]

On Thu, Apr 05, 2007, Daniel P. Berrange wrote:
>  On Thu, Apr 05, 2007 at 06:42:24AM +0200, Frank Rosendahl wrote:
>  > Did you get the same results with the kernel 2.6.19.6.5?
>  > 
>  > Try to use this one because it seems the 2.6.20 is allways crashing (also on 
>  > my AMD 1000)
>  
>  Yes, as many people have pointed out on list & bz there's been some rather
>  bad instability issues with 2.6.20  based Xen. We're trying to track down
>  the problems & resolve them so we can get back a stable Xen kernel again.
>  If anyone captures kernel panic dumps please report in BZ so we can track
>  them. 
How's this? Happens at startup in dom0; can't even fire up xend.
This is on a FC5 setup.

Linux hosting-2 2.6.20-1.2307.fc5xen0 #1 SMP Sun Mar 18 21:59:42 EDT 2007 i686 athlon i386
GNU/Linux

[snip rest of stuff]
All bugs added by David S. Miller <davem(a)redhat.com&gt;
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
eth1.4: add 33:33:00:00:00:01 mcast address to master interface
eth1.4: add 33:33:ff:07:91:f7 mcast address to master interface
Mobile IPv6
list_del corruption. prev->next should be c1877000, but was 00000000
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:67!
invalid opcode: 0000 [#1]
SMP 
last sysfs file: /class/xen/blktap0/dev
Modules linked in: blktap ipv6 autofs4 sunrpc 8021q nf_conntrack_netbios_ns ipt_REJECT
nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables
x_tables video sbs i2c_ec dock button battery asus_acpi backlight ac lp parport_pc parport
floppy ohci1394 ieee1394 ehci_hcd ohci_hcd sata_nv sata_sil libata snd_intel8x0
snd_ac97_codec scsi_mod ac97_bus snd_seq_dummy snd_seq_oss e100 e1000 snd_seq_midi_event
snd_seq mii snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore
snd_page_alloc pcspkr forcedeth i2c_nforce2 i2c_core dm_snapshot dm_zero dm_mirror dm_mod
raid1 ext3 jbd
CPU:    0
EIP:    0061:[<c10df139>]    Not tainted VLI
EFLAGS: 00010092   (2.6.20-1.2307.fc5xen0 #1)
EIP is at list_del+0x21/0x5d
eax: 00000048   ebx: c1877c94   ecx: c12b2150   edx: fbc16000
esi: c1877000   edi: c1ffb720   ebp: c1879de0   esp: f3fc3ef4
ds: 007b   es: 007b   ss: 0069
Process events/0 (pid: 5, ti=f3fc3000 task=f3fc0030 task.ti=f3fc3000)
Stack: c126e53d c1877000 00000000 c1877c94 c106043f 00000005 00000000 00000018 
       00000000 f3fe1620 f3fe1620 00000018 f3fe1600 00000000 c106054f 00000000 
       00000000 c1879de0 c1ffb744 c1ffb720 c1879de0 00000000 c17915c0 c10617b5 
Call Trace:
 [<c106043f>] free_block+0x5f/0xe5
 [<c106054f>] drain_array+0x8a/0xb5
 [<c10617b5>] cache_reap+0x61/0x124
 [<c102de72>] run_workqueue+0x85/0x125
 [<c121523a>] _spin_lock_irqsave+0x12/0x17
 [<c1061754>] cache_reap+0x0/0x124
 [<c102e7c4>] worker_thread+0xd9/0x105
 [<c101b3b6>] default_wake_function+0x0/0xc
 [<c102e6eb>] worker_thread+0x0/0x105
 [<c1030e0b>] kthread+0xb0/0xd9
 [<c1030d5b>] kthread+0x0/0xd9
 [<c1005113>] kernel_thread_helper+0x7/0x10
 =======================
Code: 63 00 00 00 89 c3 eb e8 90 90 53 83 ec 0c 8b 48 04 8b 11 39 c2 74 18 89 54 24 08 89
44 24 04 c7 04 24 3d e5 26 c1 e8 0b 15 f4 ff <0f> 0b eb fe 8b 10 8b 5a 04 39 c3 74
18 89 5c 24 08 89 44 24 04 
EIP: [<c10df139>] list_del+0x21/0x5d SS:ESP 0069:f3fc3ef4
 <7>eth1.4: no IPv6 routers present
eth0: no IPv6 routers present
eth1: no IPv6 routers present
[root@hosting-2 ~]# dmesg | less

list_del corruption. prev->next should be c1877000, but was 00000000
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:67!
invalid opcode: 0000 [#1]
SMP 
last sysfs file: /class/xen/blktap0/dev
Modules linked in: blktap ipv6 autofs4 sunrpc 8021q nf_conntrack_netbios_ns ipt_REJECT
nf_conntrack_ipv4
 xt_state nf_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables x_tables video sbs
i2c_ec dock butto
n battery asus_acpi backlight ac lp parport_pc parport floppy ohci1394 ieee1394 ehci_hcd
ohci_hcd sata_n
v sata_sil libata snd_intel8x0 snd_ac97_codec scsi_mod ac97_bus snd_seq_dummy snd_seq_oss
e100 e1000 snd
_seq_midi_event snd_seq mii snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd
soundcore snd
_page_alloc pcspkr forcedeth i2c_nforce2 i2c_core dm_snapshot dm_zero dm_mirror dm_mod
raid1 ext3 jbd
CPU:    0
EIP:    0061:[<c10df139>]    Not tainted VLI
EFLAGS: 00010092   (2.6.20-1.2307.fc5xen0 #1)
EIP is at list_del+0x21/0x5d
eax: 00000048   ebx: c1877c94   ecx: c12b2150   edx: fbc16000
esi: c1877000   edi: c1ffb720   ebp: c1879de0   esp: f3fc3ef4
ds: 007b   es: 007b   ss: 0069
Process events/0 (pid: 5, ti=f3fc3000 task=f3fc0030 task.ti=f3fc3000)
Stack: c126e53d c1877000 00000000 c1877c94 c106043f 00000005 00000000 00000018 
       00000000 f3fe1620 f3fe1620 00000018 f3fe1600 00000000 c106054f 00000000 
       00000000 c1879de0 c1ffb744 c1ffb720 c1879de0 00000000 c17915c0 c10617b5 
Call Trace:
 [<c106043f>] free_block+0x5f/0xe5
 [<c106054f>] drain_array+0x8a/0xb5
 [<c10617b5>] cache_reap+0x61/0x124
 [<c102de72>] run_workqueue+0x85/0x125
 [<c121523a>] _spin_lock_irqsave+0x12/0x17
 [<c1061754>] cache_reap+0x0/0x124
 [<c102e7c4>] worker_thread+0xd9/0x105
 [<c101b3b6>] default_wake_function+0x0/0xc
 [<c102e6eb>] worker_thread+0x0/0x105
 [<c1030e0b>] kthread+0xb0/0xd9
 [<c1030d5b>] kthread+0x0/0xd9
 [<c1005113>] kernel_thread_helper+0x7/0x10
 =======================
Code: 63 00 00 00 89 c3 eb e8 90 90 53 83 ec 0c 8b 48 04 8b 11 39 c2 74 18 89 54 24 08 89
44 24 04 c7 04
 24 3d e5 26 c1 e8 0b 15 f4 ff <0f> 0b eb fe 8b 10 8b 5a 04 39 c3 74 18 89 5c 24 08
89 44 24 04 
EIP: [<c10df139>] list_del+0x21/0x5d SS:ESP 0069:f3fc3ef4