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[Xen-devel] Possible bug, dom0 crash on ubuntu


  • To: xen-devel@xxxxxxxxxxxxx
  • From: Rolu <rolu@xxxxxxxx>
  • Date: Sun, 17 Jun 2012 02:52:46 +0200
  • Delivery-date: Sun, 17 Jun 2012 00:54:44 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>

When booting a recently compiled Xen 4.2 on Ubuntu 12.04, dom0
crashes. I've included a serial console log below.

I've used:
Xen 4.2 unstable rev. 25483, compiled on the same machine. I had to
apply the AT_EMPTY_PATH patch from
http://lists.gnu.org/archive/html/qemu-devel/2012-02/msg03460.html to
get it to compile.
Linux 3.2.0-25, which is the default kernel in Ubuntu's repository right now.
Ubuntu 12.04 Precise

Booting with the default Xen 4.1 from the Ubuntu repositories works.

Using the kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/, which is
a mainline Linux kernel (and also more recent) works with my compiled
version of Xen 4.2

So,
* Is xen 4.2 not happy with the 3.2 kernel I've used?
* Is this due to something Ubuntu modified in their default kernel?
* Is this an issue with Xen?
* Did I break something?

-----

 __  __            _  _    ____                     _        _     _
 \ \/ /___ _ __   | || |  |___ \    _   _ _ __  ___| |_ __ _| |__ | | ___
  \  // _ \ '_ \  | || |_   __) |__| | | | '_ \/ __| __/ _` | '_ \| |/ _ \
  /  \  __/ | | | |__   _| / __/|__| |_| | | | \__ \ || (_| | |_) | |  __/
 /_/\_\___|_| |_|    |_|(_)_____|   \__,_|_| |_|___/\__\__,_|_.__/|_|\___|

(XEN) Xen version 4.2-unstable (root@xxxxxxxx) (gcc version 4.6.3
(Ubuntu/Linaro 4.6.3-1ubuntu5) ) Fri Jun 15 05:32:29 CEST 2012
(XEN) Latest ChangeSet: Thu Jun 14 16:05:42 2012 +0100 25483:9dffb1864f2c
(XEN) Bootloader: GRUB 1.99-21ubuntu3.1
(XEN) Command line: placeholder loglvl=all guest_loglvl=all
console_timestamps=1 noreboot com1=115200,8n1,0x3f8,4 console=com1,vga
(XEN) Video information:
(XEN)  VGA is text mode 80x25, font 8x16
(XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds
(XEN) Disc information:
(XEN)  Found 3 MBR signatures
(XEN)  Found 3 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009d800 (usable)
(XEN)  000000000009d800 - 00000000000a0000 (reserved)
(XEN)  00000000000e0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 0000000020000000 (usable)
(XEN)  0000000020000000 - 0000000020200000 (reserved)
(XEN)  0000000020200000 - 0000000040004000 (usable)
(XEN)  0000000040004000 - 0000000040005000 (reserved)
(XEN)  0000000040005000 - 00000000bd8a7000 (usable)
(XEN)  00000000bd8a7000 - 00000000bde1f000 (reserved)
(XEN)  00000000bde1f000 - 00000000be09f000 (ACPI NVS)
(XEN)  00000000be09f000 - 00000000be0a4000 (ACPI data)
(XEN)  00000000be0a4000 - 00000000be0e7000 (ACPI NVS)
(XEN)  00000000be0e7000 - 00000000beb81000 (usable)
(XEN)  00000000beb81000 - 00000000beff2000 (reserved)
(XEN)  00000000beff2000 - 00000000bf000000 (usable)
(XEN)  00000000bf800000 - 00000000cfa00000 (reserved)
(XEN)  00000000f8000000 - 00000000fc000000 (reserved)
(XEN)  00000000fec00000 - 00000000fec01000 (reserved)
(XEN)  00000000fed00000 - 00000000fed04000 (reserved)
(XEN)  00000000fed1c000 - 00000000fed20000 (reserved)
(XEN)  00000000fee00000 - 00000000fee01000 (reserved)
(XEN)  00000000ff000000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 000000042f600000 (usable)
(XEN) ACPI: RSDP 000F0450, 0024 (r2 ALASKA)
(XEN) ACPI: XSDT BE084080, 0084 (r1 ALASKA    A M I  1072009 AMI     10013)
(XEN) ACPI: FACP BE08E218, 00F4 (r4 ALASKA    A M I  1072009 AMI     10013)
(XEN) ACPI: DSDT BE0841A0, A077 (r2 ALASKA    A M I       14 INTL 20051117)
(XEN) ACPI: FACS BE09DF80, 0040
(XEN) ACPI: APIC BE08E310, 0072 (r3 ALASKA    A M I  1072009 AMI     10013)
(XEN) ACPI: ASF! BE08E388, 00A5 (r32 INTEL       HCG        1 TFSM    F4240)
(XEN) ACPI: MCFG BE08E430, 003C (r1 ALASKA    A M I  1072009 MSFT       97)
(XEN) ACPI: SSDT BE08E470, 04A6 (r1 Intel_ AoacTabl     1000 INTL 20091112)
(XEN) ACPI: AAFT BE08E918, 00C2 (r1 ALASKA OEMAAFT   1072009 MSFT       97)
(XEN) ACPI: HPET BE08E9E0, 0038 (r1 ALASKA    A M I  1072009 AMI.        5)
(XEN) ACPI: SSDT BE08EA18, 036D (r1 SataRe SataTabl     1000 INTL 20091112)
(XEN) ACPI: SSDT BE08ED88, 09AA (r1  PmRef  Cpu0Ist     3000 INTL 20051117)
(XEN) ACPI: SSDT BE08F738, 0A92 (r1  PmRef    CpuPm     3000 INTL 20051117)
(XEN) ACPI: DMAR BE0901D0, 00B8 (r1 INTEL      SNB         1 INTL        1)
(XEN) ACPI: BGRT BE090288, 003C (r0 ALASKA    A M I  1072009 AMI     10013)
(XEN) System RAM: 16086MB (16473004kB)
(XEN) No NUMA configuration found
(XEN) Faking a node at 0000000000000000-000000042f600000
(XEN) Domain heap initialised
(XEN) found SMP MP-table at 000fceb0
(XEN) DMI 2.7 present.
(XEN) Using APIC driver default
(XEN) ACPI: PM-Timer IO Port: 0x408
(XEN) ACPI: ACPI SLEEP INFO: pm1x_cnt[404,0], pm1x_evt[400,0]
(XEN) ACPI: 32/64X FACS address mismatch in FADT -
be09df80/0000000000000000, using 32
(XEN) ACPI:                  wakeup_vec[be09df8c], vec_size[20]
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
(XEN) Processor #0 7:10 APIC version 21
(XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
(XEN) Processor #2 7:10 APIC version 21
(XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled)
(XEN) Processor #4 7:10 APIC version 21
(XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x06] enabled)
(XEN) Processor #6 7:10 APIC version 21
(XEN) ACPI: LAPIC_NMI (acpi_id[0xff] high edge 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: 0x8086a701 base: 0xfed00000
(XEN) Table is not found!
(XEN) Using ACPI (MADT) for SMP configuration information
(XEN) SMP: Allowing 4 CPUs (0 hotplug CPUs)
(XEN) IRQ limits: 24 GSI, 760 MSI/MSI-X
(XEN) Switched to APIC driver x2apic_cluster.
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 3300.138 MHz processor.
(XEN) Initing memory sharing.
(XEN) xstate_init: using cntxt_size: 0x340 and states: 0x7
(XEN) mce_intel.c:1239: MCA Capability: BCAST 1 SER 0 CMCI 1 firstbank
0 extended MCE MSR 0
(XEN) Intel machine check reporting enabled
(XEN) PCI: MCFG configuration 0: base f8000000 segment 0000 buses 00 - 3f
(XEN) PCI: MCFG area at f8000000 reserved in E820
(XEN) PCI: Using MCFG for segment 0000 bus 00-3f
(XEN) Intel VT-d Snoop Control not enabled.
(XEN) Intel VT-d Dom0 DMA Passthrough not enabled.
(XEN) Intel VT-d Queued Invalidation enabled.
(XEN) Intel VT-d Interrupt Remapping enabled.
(XEN) Intel VT-d Shared EPT tables not enabled.
(XEN) I/O virtualisation enabled
(XEN)  - Dom0 mode: Relaxed
(XEN) Enabled directed EOI with ioapic_ack_old on!
(XEN) ENABLING IO-APIC IRQs
(XEN)  -> Using old ACK method
(XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
(XEN) TSC deadline timer enabled
(XEN) [2012-06-17 00:22:20] Platform timer is 14.318MHz HPET
(XEN) [2012-06-17 00:22:20] Allocated console ring of 32 KiB.
(XEN) [2012-06-17 00:22:20] VMX: Supported advanced features:
(XEN) [2012-06-17 00:22:20]  - APIC MMIO access virtualisation
(XEN) [2012-06-17 00:22:20]  - APIC TPR shadow
(XEN) [2012-06-17 00:22:20]  - Extended Page Tables (EPT)
(XEN) [2012-06-17 00:22:20]  - Virtual-Processor Identifiers (VPID)
(XEN) [2012-06-17 00:22:20]  - Virtual NMI
(XEN) [2012-06-17 00:22:20]  - MSR direct-access bitmap
(XEN) [2012-06-17 00:22:20]  - Unrestricted Guest
(XEN) [2012-06-17 00:22:20] HVM: ASIDs enabled.
(XEN) [2012-06-17 00:22:20] HVM: VMX enabled
(XEN) [2012-06-17 00:22:20] HVM: Hardware Assisted Paging (HAP) detected
(XEN) [2012-06-17 00:22:20] HVM: HAP page sizes: 4kB, 2MB
(XEN) [2012-06-17 00:22:20] Brought up 4 CPUs
(XEN) [2012-06-17 00:22:20] ACPI sleep modes: S3
(XEN) [2012-06-17 00:22:20] mcheck_poll: Machine check polling timer started.
(XEN) [2012-06-17 00:22:20] *** LOADING DOMAIN 0 ***
(XEN) [2012-06-17 00:22:20] elf_parse_binary: phdr: paddr=0x1000000
memsz=0xad5000
(XEN) [2012-06-17 00:22:20] elf_parse_binary: phdr: paddr=0x1c00000
memsz=0xe50e0
(XEN) [2012-06-17 00:22:20] elf_parse_binary: phdr: paddr=0x1ce6000
memsz=0x14480
(XEN) [2012-06-17 00:22:20] elf_parse_binary: phdr: paddr=0x1cfb000
memsz=0x364000
(XEN) [2012-06-17 00:22:20] elf_parse_binary: memory: 0x1000000 -> 0x205f000
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: GUEST_OS = "linux"
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: GUEST_VERSION = "2.6"
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: XEN_VERSION = "xen-3.0"
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: VIRT_BASE = 0xffffffff80000000
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: ENTRY = 0xffffffff81cfb200
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: HYPERCALL_PAGE =
0xffffffff81001000
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: FEATURES =
"!writable_page_tables|pae_pgdir_above_4gb"
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: PAE_MODE = "yes"
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: LOADER = "generic"
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: unknown xen elf note (0xd)
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: SUSPEND_CANCEL = 0x1
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: HV_START_LOW =
0xffff800000000000
(XEN) [2012-06-17 00:22:20] elf_xen_parse_note: PADDR_OFFSET = 0x0
(XEN) [2012-06-17 00:22:20] elf_xen_addr_calc_check: addresses:
(XEN) [2012-06-17 00:22:20]     virt_base        = 0xffffffff80000000
(XEN) [2012-06-17 00:22:20]     elf_paddr_offset = 0x0
(XEN) [2012-06-17 00:22:20]     virt_offset      = 0xffffffff80000000
(XEN) [2012-06-17 00:22:20]     virt_kstart      = 0xffffffff81000000
(XEN) [2012-06-17 00:22:20]     virt_kend        = 0xffffffff8205f000
(XEN) [2012-06-17 00:22:20]     virt_entry       = 0xffffffff81cfb200
(XEN) [2012-06-17 00:22:20]     p2m_base         = 0xffffffffffffffff
(XEN) [2012-06-17 00:22:20]  Xen  kernel: 64-bit, lsb, compat32
(XEN) [2012-06-17 00:22:20]  Dom0 kernel: 64-bit, PAE, lsb, paddr
0x1000000 -> 0x205f000
(XEN) [2012-06-17 00:22:20] PHYSICAL MEMORY ARRANGEMENT:
(XEN) [2012-06-17 00:22:20]  Dom0 alloc.:
0000000418000000->0000000420000000 (3987995 pages to be allocated)
(XEN) [2012-06-17 00:22:20]  Init. ramdisk: 000000042d02f000->000000042f5ff400
(XEN) [2012-06-17 00:22:20] VIRTUAL MEMORY ARRANGEMENT:
(XEN) [2012-06-17 00:22:20]  Loaded kernel: ffffffff81000000->ffffffff8205f000
(XEN) [2012-06-17 00:22:20]  Init. ramdisk: ffffffff8205f000->ffffffff8462f400
(XEN) [2012-06-17 00:22:20]  Phys-Mach map: ffffffff84630000->ffffffff864eff60
(XEN) [2012-06-17 00:22:20]  Start info:    ffffffff864f0000->ffffffff864f04b4
(XEN) [2012-06-17 00:22:20]  Page tables:   ffffffff864f1000->ffffffff86528000
(XEN) [2012-06-17 00:22:20]  Boot stack:    ffffffff86528000->ffffffff86529000
(XEN) [2012-06-17 00:22:20]  TOTAL:         ffffffff80000000->ffffffff86800000
(XEN) [2012-06-17 00:22:20]  ENTRY ADDRESS: ffffffff81cfb200
(XEN) [2012-06-17 00:22:20] Dom0 has maximum 4 VCPUs
(XEN) [2012-06-17 00:22:20] elf_load_binary: phdr 0 at
0xffffffff81000000 -> 0xffffffff81ad5000
(XEN) [2012-06-17 00:22:20] elf_load_binary: phdr 1 at
0xffffffff81c00000 -> 0xffffffff81ce50e0
(XEN) [2012-06-17 00:22:20] elf_load_binary: phdr 2 at
0xffffffff81ce6000 -> 0xffffffff81cfa480
(XEN) [2012-06-17 00:22:20] elf_load_binary: phdr 3 at
0xffffffff81cfb000 -> 0xffffffff81dd3000
(XEN) [2012-06-17 00:22:22] Scrubbing Free RAM: .done.
(XEN) [2012-06-17 00:22:22] Initial low memory virq threshold set at
0x4000 pages.
(XEN) [2012-06-17 00:22:22] Std. Loglevel: All
(XEN) [2012-06-17 00:22:22] Guest Loglevel: All
(XEN) [2012-06-17 00:22:22] Xen is relinquishing VGA console.
(XEN) [2012-06-17 00:22:22] *** Serial input -> DOM0 (type 'CTRL-a'
three times to switch input to Xen)
(XEN) [2012-06-17 00:22:22] Freed 244kB init memory.
mapping kernel into physical memory
Xen: setup ISA identity maps
about to get started...
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.2.0-25-generic (buildd@crested) (gcc
version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #40-Ubuntu SMP We)
[    0.000000] Command line: placeholder
root=UUID=74eca254-73dc-478d-9c20-8e0c1fa8bebe ro console=hvc0
earlyprintk=xen
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Centaur CentaurHauls
[    0.000000] Freeing  9d-100 pfn range: 99 pages freed
[    0.000000] Freeing  20000-20200 pfn range: 512 pages freed
[    0.000000] Freeing  40004-40005 pfn range: 1 pages freed
[    0.000000] Freeing  bd8a7-be0e7 pfn range: 2112 pages freed
[    0.000000] Freeing  beb81-beff2 pfn range: 1137 pages freed
[    0.000000] Freeing  bf000-100000 pfn range: 266240 pages freed
[    0.000000] Released 270101 pages of unused memory
[    0.000000] Set 270101 page(s) to 1-1 mapping
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  Xen: 0000000000000000 - 000000000009d000 (usable)
[    0.000000]  Xen: 000000000009d800 - 0000000000100000 (reserved)
[    0.000000]  Xen: 0000000000100000 - 0000000020000000 (usable)
[    0.000000]  Xen: 0000000020000000 - 0000000020200000 (reserved)
[    0.000000]  Xen: 0000000020200000 - 0000000040004000 (usable)
[    0.000000]  Xen: 0000000040004000 - 0000000040005000 (reserved)
[    0.000000]  Xen: 0000000040005000 - 00000000bd8a7000 (usable)
[    0.000000]  Xen: 00000000bd8a7000 - 00000000bde1f000 (reserved)
[    0.000000]  Xen: 00000000bde1f000 - 00000000be09f000 (ACPI NVS)
[    0.000000]  Xen: 00000000be09f000 - 00000000be0a4000 (ACPI data)
[    0.000000]  Xen: 00000000be0a4000 - 00000000be0e7000 (ACPI NVS)
[    0.000000]  Xen: 00000000be0e7000 - 00000000beb81000 (usable)
[    0.000000]  Xen: 00000000beb81000 - 00000000beff2000 (reserved)
[    0.000000]  Xen: 00000000beff2000 - 00000000bf000000 (usable)
[    0.000000]  Xen: 00000000bf800000 - 00000000cfa00000 (reserved)
[    0.000000]  Xen: 00000000f8000000 - 00000000fc000000 (reserved)
[    0.000000]  Xen: 00000000fec00000 - 00000000fec01000 (reserved)
[    0.000000]  Xen: 00000000fed00000 - 00000000fed04000 (reserved)
[    0.000000]  Xen: 00000000fed1c000 - 00000000fed20000 (reserved)
[    0.000000]  Xen: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  Xen: 00000000ff000000 - 0000000100000000 (reserved)
[    0.000000]  Xen: 0000000100000000 - 000000042f600000 (usable)
[    0.000000] bootconsole [xenboot0] enabled
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] DMI 2.7 present.
[    0.000000] No AGP bridge found
[    0.000000] last_pfn = 0x42f600 max_arch_pfn = 0x400000000
[    0.000000] x2apic enabled by BIOS, switching to x2apic ops
[    0.000000] last_pfn = 0xbf000 max_arch_pfn = 0x400000000
[    0.000000] found SMP MP-table at [ffff8800000fceb0] fceb0
[    0.000000] init_memory_mapping: 0000000000000000-00000000bf000000
[    0.000000] init_memory_mapping: 0000000100000000-000000042f600000
[    0.000000] RAMDISK: 0205f000 - 04630000
[    0.000000] ACPI: RSDP 00000000000f0450 00024 (v02 ALASKA)
[    0.000000] ACPI: XSDT 00000000be084080 00084 (v01 ALASKA    A M I
01072009 AMI  00010013)
[    0.000000] ACPI: FACP 00000000be08e218 000F4 (v04 ALASKA    A M I
01072009 AMI  00010013)
[    0.000000] ACPI: DSDT 00000000be0841a0 0A077 (v02 ALASKA    A M I
00000014 INTL 20051117)
[    0.000000] ACPI: FACS 00000000be09df80 00040
[    0.000000] ACPI: APIC 00000000be08e310 00072 (v03 ALASKA    A M I
01072009 AMI  00010013)
[    0.000000] ACPI: ASF! 00000000be08e388 000A5 (v32 INTEL       HCG
00000001 TFSM 000F4240)
[    0.000000] ACPI: MCFG 00000000be08e430 0003C (v01 ALASKA    A M I
01072009 MSFT 00000097)
[    0.000000] ACPI: SSDT 00000000be08e470 004A6 (v01 Intel_ AoacTabl
00001000 INTL 20091112)
[    0.000000] ACPI: AAFT 00000000be08e918 000C2 (v01 ALASKA OEMAAFT
01072009 MSFT 00000097)
[    0.000000] ACPI: HPET 00000000be08e9e0 00038 (v01 ALASKA    A M I
01072009 AMI. 00000005)
[    0.000000] ACPI: SSDT 00000000be08ea18 0036D (v01 SataRe SataTabl
00001000 INTL 20091112)
[    0.000000] ACPI: SSDT 00000000be08ed88 009AA (v01  PmRef  Cpu0Ist
00003000 INTL 20051117)
[    0.000000] ACPI: SSDT 00000000be08f738 00A92 (v01  PmRef    CpuPm
00003000 INTL 20051117)
[    0.000000] ACPI: XMAR 00000000be0901d0 000B8 (v01 INTEL      SNB
00000001 INTL 00000001)
[    0.000000] ACPI: BGRT 00000000be090288 0003C (v00 ALASKA    A M I
01072009 AMI  00010013)
[    0.000000] Setting APIC routing to cluster x2apic.
[    0.000000] No NUMA configuration found
[    0.000000] Faking a node at 0000000000000000-000000042f600000
[    0.000000] Initmem setup node 0 0000000000000000-000000042f600000
[    0.000000]   NODE_DATA [00000003d7fe7000 - 00000003d7febfff]
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000010 -> 0x00001000
[    0.000000]   DMA32    0x00001000 -> 0x00100000
[    0.000000]   Normal   0x00100000 -> 0x0042f600
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[7] active PFN ranges
[    0.000000]     0: 0x00000010 -> 0x0000009d
[    0.000000]     0: 0x00000100 -> 0x00020000
[    0.000000]     0: 0x00020200 -> 0x00040004
[    0.000000]     0: 0x00040005 -> 0x000bd8a7
[    0.000000]     0: 0x000be0e7 -> 0x000beb81
[    0.000000]     0: 0x000beff2 -> 0x000bf000
[    0.000000]     0: 0x00100000 -> 0x0042f600
[    0.000000] ACPI: PM-Timer IO Port: 0x408
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x06] enabled)
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] high edge lint[0x1])
[    0.000000] ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 2, version 255, address 0xfec00000, GSI 0-255
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] ACPI: HPET id: 0x8086a701 base: 0xfed00000
[    0.000000] SMP: Allowing 4 CPUs, 0 hotplug CPUs
[    0.000000] PM: Registered nosave memory: 000000000009d000 - 000000000009e000
[    0.000000] PM: Registered nosave memory: 000000000009e000 - 0000000000100000
[    0.000000] PM: Registered nosave memory: 0000000020000000 - 0000000020200000
[    0.000000] PM: Registered nosave memory: 0000000040004000 - 0000000040005000
[    0.000000] PM: Registered nosave memory: 00000000bd8a7000 - 00000000bde1f000
[    0.000000] PM: Registered nosave memory: 00000000bde1f000 - 00000000be09f000
[    0.000000] PM: Registered nosave memory: 00000000be09f000 - 00000000be0a4000
[    0.000000] PM: Registered nosave memory: 00000000be0a4000 - 00000000be0e7000
[    0.000000] PM: Registered nosave memory: 00000000beb81000 - 00000000beff2000
[    0.000000] PM: Registered nosave memory: 00000000bf000000 - 00000000bf800000
[    0.000000] PM: Registered nosave memory: 00000000bf800000 - 00000000cfa00000
[    0.000000] PM: Registered nosave memory: 00000000cfa00000 - 00000000f8000000
[    0.000000] PM: Registered nosave memory: 00000000f8000000 - 00000000fc000000
[    0.000000] PM: Registered nosave memory: 00000000fc000000 - 00000000fec00000
[    0.000000] PM: Registered nosave memory: 00000000fec00000 - 00000000fec01000
[    0.000000] PM: Registered nosave memory: 00000000fec01000 - 00000000fed00000
[    0.000000] PM: Registered nosave memory: 00000000fed00000 - 00000000fed04000
[    0.000000] PM: Registered nosave memory: 00000000fed04000 - 00000000fed1c000
[    0.000000] PM: Registered nosave memory: 00000000fed1c000 - 00000000fed20000
[    0.000000] PM: Registered nosave memory: 00000000fed20000 - 00000000fee00000
[    0.000000] PM: Registered nosave memory: 00000000fee00000 - 00000000fee01000
[    0.000000] PM: Registered nosave memory: 00000000fee01000 - 00000000ff000000
[    0.000000] PM: Registered nosave memory: 00000000ff000000 - 0000000100000000
[    0.000000] Allocating PCI resources starting at cfa00000 (gap:
cfa00000:28600000)
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.2-unstable (preserve-AD)
[    0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256
nr_cpu_ids:4 nr_node_ids:1
[    0.000000] PERCPU: Embedded 28 pages/cpu @ffff8803d7c00000 s83072
r8192 d23424 u524288
[    3.860481] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 4048188
[    3.860484] Policy zone: Normal
[    3.860487] Kernel command line: placeholder
root=UUID=74eca254-73dc-478d-9c20-8e0c1fa8bebe ro console=hvc0
earlyprintk=xen
[    3.860828] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    3.861070] invalid opcode: 0000 [#1] SMP
[    3.861073] CPU 0
[    3.861074] Modules linked in:
[    3.861076]
[    3.861078] Pid: 0, comm: swapper Not tainted 3.2.0-25-generic
#40-Ubuntu To Be Filled By O.E.M. To Be Filled By O.E.M./Z77 Extre6
[    3.861083] RIP: e030:[<ffffffff8101d82c>]  [<ffffffff8101d82c>]
xstate_enable+0x3c/0x50
[    3.861090] RSP: e02b:ffffffff81c01e58  EFLAGS: 00010046
[    3.861092] RAX: 0000000000000007 RBX: ffffffff81c01e94 RCX: 0000000000000000
[    3.861094] RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000002660
[    3.861096] RBP: ffffffff81c01e58 R08: ffffffff81c01e90 R09: ffffffff81c01e94
[    3.861098] R10: 00000000ffffffff R11: 00000000ffffffff R12: ffffffff81c01e90
[    3.861100] R13: ffffffff81c01e8c R14: ffffffff81c01e88 R15: ffff8803d7c0c480
[    3.861104] FS:  0000000000000000(0000) GS:ffff8803d7c00000(0000)
knlGS:0000000000000000
[    3.861107] CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[    3.861108] CR2: 0000000000000000 CR3: 0000000001c05000 CR4: 0000000000002660
[    3.861111] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    3.861113] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[    3.861115] Process swapper (pid: 0, threadinfo ffffffff81c00000,
task ffffffff81c0d020)
[    3.861117] Stack:
[    3.861119]  ffffffff81c01ec8 ffffffff81d04795 ffff8803d7c0b150
ffff8803d7c0b950
[    3.861123]  ffff8803d7c0b150 ffff8803d7c0b950 0000024000000007
0000000000000340
[    3.861127]  0000000000000004 0000000000000008 0000000000000004
0000000000000000
[    3.861131] Call Trace:
[    3.861136]  [<ffffffff81d04795>] xstate_enable_boot_cpu+0xa9/0x174
[    3.861141]  [<ffffffff8163660b>] xsave_init+0x26/0x28
[    3.861143]  [<ffffffff816388d1>] cpu_init+0x2bb/0x2d8
[    3.861146]  [<ffffffff81d00f92>] trap_init+0x169/0x171
[    3.861149]  [<ffffffff81cfba28>] start_kernel+0x1d5/0x3c7
[    3.861153]  [<ffffffff81cfb388>] x86_64_start_reservations+0x132/0x136
[    3.861156]  [<ffffffff81cfef27>] xen_start_kernel+0x5d9/0x5e0
[    3.861157] Code: 00 04 00 ff 14 25 90 76 c1 81 48 89 c7 48 81 cf
00 00 04 00 ff 14 25 98 76 c1 81 48 8b 05 cd 0d dc 00 31 c9 48
[    3.861191] RIP  [<ffffffff8101d82c>] xstate_enable+0x3c/0x50
[    3.861194]  RSP <ffffffff81c01e58

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