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[Xen-devel] Xen panic with if dom0 kernel bigger than 4MB

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Xen panic with if dom0 kernel bigger than 4MB
From: Frédéric VANNIÈRE <frederic@xxxxxxxxxxx>
Date: Tue, 7 Sep 2010 15:25:46 +0200
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Hello,



With kernel 2.6.32.21 (from Jeremy) :
   - System size : 3945 kB, gzip compressed kernel size  4051553 Bytes -> works 
well
   - System size : 3968 kB, gzip compressed kernel size  4074976 Bytes -> fault 
(see below)

I've attached the 2 configurations files and xen boot error.  

Attachment: config-2.6.32.21-xen0.gz
Description: GNU Zip compressed data

Attachment: config-2.6.32.21-xen0-PANIC.gz
Description: GNU Zip compressed data


 __  __            _  _    ___   _ 
 \ \/ /___ _ __   | || |  / _ \ / |
  \  // _ \ '_ \  | || |_| | | || |
  /  \  __/ | | | |__   _| |_| || |
 /_/\_\___|_| |_|    |_|(_)___(_)_|
                                   
(XEN) Xen version 4.0.1 (root@xxxxxxxxxxxxxxx) (gcc version 4.4.5 20100728 
(prerelease) (Debian 4.4.4-8) ) Tue Sep  7 09:56:45 CEST 2010
(XEN) Latest ChangeSet: unavailable
(XEN) Bootloader: GRUB 1.98+20100804-4
(XEN) Command line: /boot/xen.gz console=com2,vga dom0_mem=1024M com2=115200,8n1
(XEN) Video information:
(XEN)  VGA is text mode 80x25, font 8x16
(XEN)  VBE/DDC methods: none; EDID transfer time: 2 seconds
(XEN)  EDID info not retrieved because no DDC retrieval method detected
(XEN) Disc information:
(XEN)  Found 1 MBR signatures
(XEN)  Found 1 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 0000000000097400 (usable)
(XEN)  0000000000097400 - 00000000000a0000 (reserved)
(XEN)  00000000000f0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000e762f000 (usable)
(XEN)  00000000e762f000 - 00000000e763c000 (ACPI data)
(XEN)  00000000e763c000 - 00000000e763d000 (usable)
(XEN)  00000000e763d000 - 00000000ec000000 (reserved)
(XEN)  00000000fec00000 - 00000000fee10000 (reserved)
(XEN)  00000000ff800000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 0000000617fff000 (usable)
(XEN) ACPI: RSDP 000F4F00, 0024 (r2 HP    )
(XEN) ACPI: XSDT E7630040, 00A4 (r1 HP     ProLiant        2   ÔøΩ     162E)
(XEN) ACPI: FACP E7630140, 00F4 (r3 HP     ProLiant        2   ÔøΩ     162E)
(XEN) ACPI: DSDT E7630240, 2221 (r1 HP         DSDT        1 INTL 20030228)
(XEN) ACPI: FACS E762F100, 0040
(XEN) ACPI: SPCR E762F140, 0050 (r1 HP     SPCRRBSU        1   ÔøΩ     162E)
(XEN) ACPI: MCFG E762F1C0, 003C (r1 HP     ProLiant        1             0)
(XEN) ACPI: HPET E762F200, 0038 (r1 HP     ProLiant        2   ÔøΩ     162E)
(XEN) ACPI: FFFF E762F240, 0064 (r2 HP     ProLiant        2   ÔøΩ     162E)
(XEN) ACPI: SPMI E762F2C0, 0040 (r5 HP     ProLiant        1   ÔøΩ     162E)
(XEN) ACPI: ERST E762F300, 01D0 (r1 HP     ProLiant        1   ÔøΩ     162E)
(XEN) ACPI: APIC E762F500, 015E (r1 HP     ProLiant        2             0)
(XEN) ACPI: SRAT E762F680, 0570 (r1 HP     Proliant        1   ÔøΩ     162E)
(XEN) ACPI: FFFF E762FC00, 0176 (r1 HP     ProLiant        1   ÔøΩ     162E)
(XEN) ACPI: BERT E762FD80, 0030 (r1 HP     ProLiant        1   ÔøΩ     162E)
(XEN) ACPI: HEST E762FDC0, 00BC (r1 HP     ProLiant        1   ÔøΩ     162E)
(XEN) ACPI: DMAR E762FE80, 012E (r1 HP     ProLiant        1   ÔøΩ     162E)
(XEN) ACPI: SSDT E7632480, 0125 (r3     HP  CRSPCI0        2   HP        1)
(XEN) ACPI: SSDT E76325C0, 03BB (r1     HP      pcc        1 INTL 20090625)
(XEN) ACPI: SSDT E7632980, 0AF4 (r1  INTEL PPM RCM         1 INTL 20061109)
(XEN) System RAM: 24565MB (25155352kB)
(XEN) Domain heap initialised
(XEN) Processor #16 7:10 APIC version 21
(XEN) Processor #20 7:10 APIC version 21
(XEN) Processor #18 7:10 APIC version 21
(XEN) Processor #22 7:10 APIC version 21
(XEN) IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
(XEN) IOAPIC[1]: apic_id 0, version 32, address 0xfec80000, GSI 24-47
(XEN) Enabling APIC mode:  Flat.  Using 2 I/O APICs
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 2266.774 MHz processor.
(XEN) Initing memory sharing.
(XEN) VMX: Supported advanced features:
(XEN)  - APIC MMIO access virtualisation
(XEN)  - APIC TPR shadow
(XEN)  - Extended Page Tables (EPT)
(XEN)  - Virtual-Processor Identifiers (VPID)
(XEN)  - Virtual NMI
(XEN)  - MSR direct-access bitmap
(XEN) EPT supports 2MB super page.
(XEN) HVM: ASIDs enabled.
(XEN) HVM: VMX enabled
(XEN) HVM: Hardware Assisted Paging detected.
(XEN) Intel VT-d Snoop Control not supported.
(XEN) Intel VT-d DMA Passthrough not supported.
(XEN) Intel VT-d Queued Invalidation supported.
(XEN) Intel VT-d Interrupt Remapping supported.
(XEN) I/O virtualisation enabled
(XEN)  - Dom0 mode: Relaxed
(XEN) Total of 4 processors activated.
(XEN) ENABLING IO-APIC IRQs
(XEN)  -> Using new ACK method
(XEN) TSC is reliable, synchronization unnecessary
(XEN) Platform timer appears to have unexpectedly wrapped 10 or more times.
(XEN) Platform timer is 14.318MHz HPET
ÔøΩÔøΩ(XEN) Allocated console ring of 16 KiB.
(XEN) Brought up 4 CPUs
(XEN) *** LOADING DOMAIN 0 ***
(XEN)  Xen  kernel: 64-bit, lsb, compat32
(XEN)  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1a49000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Dom0 alloc.:   0000000604000000->0000000606000000 (253952 pages to be 
allocated)
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: ffffffff81000000->ffffffff81a49000
(XEN)  Init. ramdisk: ffffffff81a49000->ffffffff81a49000
(XEN)  Phys-Mach map: ffffffff81a49000->ffffffff81c49000
(XEN)  Start info:    ffffffff81c49000->ffffffff81c494b4
(XEN)  Page tables:   ffffffff81c4a000->ffffffff81c5d000
(XEN)  Boot stack:    ffffffff81c5d000->ffffffff81c5e000
(XEN)  TOTAL:         ffffffff80000000->ffffffff82000000
(XEN)  ENTRY ADDRESS: ffffffff81850200
(XEN) Dom0 has maximum 4 VCPUs
(XEN) Scrubbing Free RAM: 
.......................................................................................................................................................................................................................................done.
(XEN) Xen trace buffers: disabled
(XEN) Std. Loglevel: Errors and warnings
(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to 
Xen)
(XEN) Freed 176kB init memory.
mapping kernel into physical memory
Xen: setup ISA identity maps
about to get started...
(XEN) d0:v0: unhandled page fault (ec=0000)
(XEN) Pagetable walk from ffffffff81a592f0:
(XEN)  L4[0x1ff] = 0000000605003067 0000000000001003
(XEN)  L3[0x1fe] = 0000000605007067 0000000000001007
(XEN)  L2[0x00d] = 0000000000000000 ffffffffffffffff 
(XEN) domain_crash_sync called from entry.S
(XEN) Domain 0 (vcpu#0) crashed on cpu#0:
(XEN) ----[ Xen-4.0.1  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    0
(XEN) RIP:    e033:[<ffffffff8100c383>]
(XEN) RFLAGS: 0000000000000202   EM: 1   CONTEXT: pv guest
(XEN) rax: ffffffff81a59000   rbx: 000000000205e067   rcx: 0000000000000000
(XEN) rdx: ffffffff81923000   rsi: 000000000205e067   rdi: 000000000000005e
(XEN) rbp: ffff88000205e000   rsp: ffffffff817cbd90   r8:  00003ffffffff000
(XEN) r9:  ffff880000000000   r10: 0000000000000000   r11: 0000000000000000
(XEN) r12: 0000000000000000   r13: 0000000000000000   r14: ffffea00001c0000
(XEN) r15: ffff88000192b000   cr0: 000000008005003b   cr4: 00000000000026f0
(XEN) cr3: 0000000605001000   cr2: ffffffff81a592f0
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e02b   cs: e033
(XEN) Guest stack trace from rsp=ffffffff817cbd90:
(XEN)    0000000000000000 0000000000000000 0000000000000000 ffffffff8100c383
(XEN)    000000010000e030 0000000000010002 ffffffff817cbdd0 000000000000e02b
(XEN)    ffffffff8100c438 ffffffff81001ea0 ffffffff8100c475 ffffffff8100bcfb
(XEN)    0000000000000000 0000000000000000 ffff880000000000 00003ffffffff000
(XEN)    000000000205e067 000000000205e067 0000000000000000 0000000000000001
(XEN)    ffffffff815d3322 ffffffffffffffc0 ffffea0000000000 0000000000000000
(XEN)    ffffffff815d1a56 ffffea00001bffff 0000000000000000 0000000000000001
(XEN)    ffffea0000000000 0000000000000000 ffff880001c5d000 0000000000000000
(XEN)    0000000000000000 ffff88000192b000 ffffffff815d31ad 0000000000000000
(XEN)    ffffffff81865865 ffffffff8188f3e0 ffff88000205d000 0000000000000001
(XEN)    000000000192a180 0000000000000000 ffffffff817cbf90 ffffffffffffffff
(XEN)    0000000000000000 0000000000000000 ffffffff81860533 0000000000001000
(XEN)    0000000000100000 0000000000040000 0000000000000000 000000000192a180
(XEN)    ffffffff818548a7 ffffffff817cbf48 0000000000000000 0000000000000000
(XEN)    ffffffff815de020 0000000000000000 0000000000000000 ffffffff8187ff60
(XEN)    0000000000000000 0000000000000000 ffffffff818509a7 0000000000000040
(XEN)    ffffffff81881ce0 ffffffff7fffffff ffffffff81001000 0000000000000000
(XEN)    0000000000000000 0000000000000000 ffffffff81852424 0000000000000000
(XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000001
(XEN)    0000000000000000 0000000000000000 0000000001000000 0000000000000000
(XEN) Domain 0 crashed: rebooting machine in 5 seconds.


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