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RE: [Xen-users] How do I find out why Dom0 crashes on guest startup?

from [Schober Walter] [Permanent Link][Original]
To: <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] How do I find out why Dom0 crashes on guest startup?
From: "Schober Walter" <Walter.Schober@xxxxxxxxx>
Date: Fri, 18 May 2007 12:46:54 +0200
Cc: "Petersson, Mats" <Mats.Petersson@xxxxxxx>
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Thread-topic: [Xen-users] How do I find out why Dom0 crashes on guest startup? 
I managed it via SSH to iLO2 :-) Console output, guest config below:

(XEN) (file=hvm.c, line=197) Allocated port 3 for hvm.
(XEN) (file=hvm.c, line=197) Allocated port 4 for hvm.
(XEN) (file=hvm.c, line=197) Allocated port 5 for hvm.
(XEN) (file=hvm.c, line=197) Allocated port 6 for hvm.
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c23
(pseudophys a0): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c22
(pseudophys a1): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c21
(pseudophys a2): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c20
(pseudophys a3): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c1f
(pseudophys a4): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c1e
(pseudophys a5): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c1d
(pseudophys a6): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c1c
(pseudophys a7): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c1b
(pseudophys a8): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c1a
(pseudophys a9): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c19
(pseudophys aa): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c18
(pseudophys ab): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c17
(pseudophys ac): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c16
(pseudophys ad): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c15
(pseudophys ae): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c14
(pseudophys af): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c13
(pseudophys b0): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c12
(pseudophys b1): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c11
(pseudophys b2): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c10
(pseudophys b3): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c0f
(pseudophys b4): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c0e
(pseudophys b5): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c0d
(pseudophys b6): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c0c
(pseudophys b7): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c0b
(pseudophys b8): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c0a
(pseudophys b9): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c09
(pseudophys ba): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c08
(pseudophys bb): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c07
(pseudophys bc): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c06
(pseudophys bd): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c05
(pseudophys be): count=2 type=0
(XEN) (file=memory.c, line=188) Dom1 freeing in-use page c8c04
(pseudophys bf): count=2 type=0
(XEN) vmx_do_launch(): GUEST_CR3<=0027f7a0, HOST_CR3<=4f2bf000
(XEN) (GUEST: 1) HVM Loader
(XEN) (GUEST: 1) Detected Xen v3.0.3-rc5-8.1.3.el
(XEN) (GUEST: 1) Writing SMBIOS tables ...
(XEN) (GUEST: 1) Loading ROMBIOS ...
(XEN) (GUEST: 1) Creating MP tables ...
(XEN) (GUEST: 1) Loading Cirrus VGABIOS ...
(XEN) (GUEST: 1) Loading ACPI ...
(XEN) (GUEST: 1) Loading VMXAssist ...
(XEN) (GUEST: 1) VMX go ...
(XEN) (GUEST: 1) VMXAssist (Apr  9 2007)
(XEN) (GUEST: 1) Memory size 2000 MB
(XEN) (GUEST: 1) E820 map:
(XEN) (GUEST: 1) 0000000000000000 - 000000000009F000 (RAM)
(XEN) (GUEST: 1) 000000000009F000 - 00000000000A0000 (Reserved)
(XEN) (GUEST: 1) 00000000000A0000 - 00000000000C0000 (Type 16)
(XEN) (GUEST: 1) 00000000000F0000 - 0000000000100000 (Reserved)
(XEN) (GUEST: 1) 0000000000100000 - 000000007CFF0000 (RAM)
(XEN) (GUEST: 1) 000000007CFF0000 - 000000007CFFA000 (ACPI Data)
(XEN) (GUEST: 1) 000000007CFFA000 - 000000007CFFD000 (ACPI NVS)
(XEN) (GUEST: 1) 000000007CFFD000 - 000000007CFFE000 (Type 19)
(XEN) (GUEST: 1) 000000007CFFE000 - 000000007CFFF000 (Type 18)
(XEN) (GUEST: 1) 000000007CFFF000 - 000000007D000000 (Type 17)
(XEN) (GUEST: 1) 00000000FEC00000 - 0000000100000000 (Type 16)
(XEN) (GUEST: 1)
(XEN) (GUEST: 1) Start BIOS ...
(XEN) (GUEST: 1) Starting emulated 16-bit real-mode: ip=F000:FFF0
(XEN) (GUEST: 1)  rombios.c,v 1.138 2005/05/07 15:55:26 vruppert Exp $
(XEN) (GUEST: 1) Remapping master: ICW2 0x8 -> 0x20
(XEN) (GUEST: 1) Remapping slave: ICW2 0x70 -> 0x28
(XEN) (GUEST: 1) VGABios $Id: vgabios.c,v 1.61 2005/05/24 16:50:50
vruppert Exp $
(XEN) (GUEST: 1) HVMAssist BIOS, 1 cpu, $Revision: 1.138 $ $Date:
2005/05/07 15:55:26 $
(XEN) (GUEST: 1)
(XEN) (GUEST: 1) ata0-0: PCHS=16383/16/63 translation=lba
LCHS=1024/255/63
(XEN) (GUEST: 1) ata0 master: QEMU HARDDISK ATA-7 Hard-Disk (15360
MBytes)
(XEN) (GUEST: 1) ata0  slave: Unknown device
(XEN) (GUEST: 1)
(XEN) (GUEST: 1) Booting from Hard Disk...
(XEN) (GUEST: 1) int13_harddisk: function 41, unmapped device for
ELDL=81
(XEN) (GUEST: 1) int13_harddisk: function 08, unmapped device for
ELDL=81
(XEN) (GUEST: 1) *** int 15h function AX=00C0, BX=0000 not yet
supported!
(XEN) (GUEST: 1) int13_harddisk: function 15, unmapped device for
ELDL=81
(XEN) (GUEST: 1) *** int 15h function AX=EC00, BX=0002 not yet
supported!
(XEN) (GUEST: 1) KBD: unsupported int 16h function 03
(XEN) (GUEST: 1) int13_harddisk: function 15, unmapped device for
ELDL=81
(XEN) (GUEST: 1) int13_harddisk: function 02, unmapped device for
ELDL=81
(XEN) (GUEST: 1) int13_harddisk: function 41, unmapped device for
ELDL=81
(XEN) This hvm_vlapic is for P4, no work for De-assert init
(XEN) (file=hvm.c, line=665) AP 1 bringup suceeded.
(XEN) vmx_do_launch(): GUEST_CR3<=0027d7a0, HOST_CR3<=4f28e000
(XEN) (GUEST: 1) Start AP 1 from 00006000 ...
(XEN) (GUEST: 1) Starting emulated 16-bit real-mode: ip=0600:0000
(XEN) This hvm_vlapic is for P4, no work for De-assert init
(XEN) (file=hvm.c, line=665) AP 2 bringup suceeded.
(XEN) vmx_do_launch(): GUEST_CR3<=0027b7a0, HOST_CR3<=4f28a000
(XEN) (GUEST: 1) Start AP 2 from 00006000 ...
(XEN) (GUEST: 1) Starting emulated 16-bit real-mode: ip=0600:0000
(XEN) This hvm_vlapic is for P4, no work for De-assert init
(XEN) (file=hvm.c, line=665) AP 3 bringup suceeded.
(XEN) malloc vlapic regs error for vcpu 3
(XEN) vmx_do_launch(): GUEST_CR3<=002797a0, HOST_CR3<=4f289000
(XEN) (GUEST: 1) Start AP 3 from 00006000 ...
(XEN) (GUEST: 1) Starting emulated 16-bit real-mode: ip=0600:0000
(XEN) ----[ Xen-3.0.3-rc5-8.1.3.el5  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    2
(XEN) RIP:    e010:[<ffff830000142da7>] vlapic_range+0x7/0x30
(XEN) RFLAGS: 0000000000010202   CONTEXT: hypervisor
(XEN) rax: 0000000000000001   rbx: ffff830000195b60   rcx:
0000000000000020
(XEN) rdx: 0000000000000000   rsi: 00000000fee00020   rdi:
ffff830000278080
(XEN) rbp: ffff8300001967e0   rsp: ffff83000021bae0   r8:
0000000000000000
(XEN) r9:  0000000000000001   r10: 0000000000000004   r11:
0000000000000000
(XEN) r12: ffff830000278080   r13: ffff8300110b30b0   r14:
0000000000000000
(XEN) r15: 0000000000000001   cr0: 000000008005003b   cr4:
00000000000026f0
(XEN) cr3: 000000004f287000   cr2: 0000000000000000
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 0000   cs: e010
(XEN) Xen stack trace from rsp=ffff83000021bae0:
(XEN)    ffff83000013e8b2 00000000c8abe067 0000000000000000
0000000000000000
(XEN)    ffff83000021bc58 0000000000000007 ffffffff80072f1a
0000000000000000
(XEN)    ffff8300110b30b0 ffff8300110b30a8 ffff830000278080
0000000000000004
(XEN)    0000000000000000 0000000000000001 ffff8300001402e1
00000000000c8ac2
(XEN)    00000000000c8ac0 00000001000c8abe 0000000000000000
00000000fee00020
(XEN)    01ff83000013b8c0 ffff830000278080 ffff83000021bc38
0000000000000001
(XEN)    00000000fee00020 0000000000000000 ffff83000021bc38
00000000fee00020
(XEN)    ffff8300001409d3 0000000000000000 0000000000000001
0000000000000007
(XEN)    ffff8300002796b0 0000000000000007 ffff830000141a1d
0000000000000000
(XEN)    ffff830000166115 0000000000000000 ffff83000021bf28
ffff83000021bf28
(XEN)    ffffffffff5fd020 ffff830000279690 ffff830000278080
0000000000040206
(XEN)    0000000000000000 04000002fee00000 0000000004060001
00ff5fd02025348b
(XEN)    0000000000000000 0000000000000000 00000000000fee00
00000000fee00762
(XEN)    ffff830000278080 ffff830000fdc080 00000000fee00020
00000000fee00000
(XEN)    0000000000000001 000000000004f295 ffff830000159959
ffffffffff5fd020
(XEN)    ffff81ffffffafe8 000000010000604c ffff8140ffffffd0
000000000004f296
(XEN)    000000000004f2a5 000000000004f2a8 ffffffff00000008
0000c09b00000000
(XEN)    000000000004f289 ffff830000278080 ffff830000278080
0000000000000001
(XEN)    00000000a0000003 000000000004f287 ffff83000015aa90
0000000000000282
(XEN)    000000000004f289 ffff830000278080 ffff8300001522d8
0000008b000d70c4
(XEN) Xen call trace:
(XEN)    [<ffff830000142da7>] vlapic_range+0x7/0x30
(XEN)    [<ffff83000013e8b2>] hvm_mmio_intercept+0x62/0x350
(XEN)    [<ffff8300001402e1>] send_mmio_req+0x1d1/0x250
(XEN)    [<ffff8300001409d3>] mmio_operands+0x103/0x150
(XEN)    [<ffff830000141a1d>] handle_mmio+0xffd/0x12c0
(XEN)    [<ffff830000166115>] handle_exception+0x45/0x6e
(XEN)    [<ffff830000159959>]
sh_page_fault__shadow_4_guest_4+0x1019/0x1080
(XEN)    [<ffff83000015aa90>]
sh_destroy_monitor_table__shadow_3_guest_3+0x40/0x60
(XEN)    [<ffff8300001522d8>] sh_update_paging_modes+0x3e8/0x450
(XEN)    [<ffff830000159d19>]
sh_update_cr3__shadow_4_guest_4+0x299/0x360
(XEN)    [<ffff83000014f317>] vmx_set_cr0+0x4b7/0x950
(XEN)    [<ffff83000012f77a>] smp_send_event_check_mask+0x3a/0x40
(XEN)    [<ffff830000152130>] sh_update_paging_modes+0x240/0x450
(XEN)    [<ffff83000014c6a7>] vmx_vmexit_do_cpuid+0x107/0x270
(XEN)    [<ffff83000013b1f1>] hvm_do_resume+0x121/0x1a0
(XEN)    [<ffff83000014c0fb>] vmx_do_page_fault+0x2b/0x50
(XEN)    [<ffff830000150c09>] vmx_vmexit_handler+0x339/0xf00
(XEN)    [<ffff830000142e6a>] cpu_has_pending_irq+0x2a/0x50
(XEN)    [<ffff83000014a7a8>] vmx_intr_assist+0xf8/0x400
(XEN)    [<ffff8300001517f8>] vmx_asm_vmexit_handler+0x28/0x30
(XEN)
(XEN) Pagetable walk from 0000000000000000:
(XEN)  L4[0x000] = 0000000000000000 ffffffffffffffff
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 2:
(XEN) CPU2 FATAL PAGE FAULT
(XEN) [error_code=0000]
(XEN) Faulting linear address: 0000000000000000
(XEN) ****************************************
(XEN)
(XEN) Manual reset required ('noreboot' specified)


------------------------------------------------------------------------
------


name = "vs1_1"
builder = "hvm"
memory = "2000"
disk = [ 'phy:/dev/vg00/vs1-1,hda,w', ]
vif = [ 'type=ioemu, mac=00:16:3e:51:08:1a, bridge=xenbr0', 'type=ioemu,
mac=00:16:3e:51:08:1b, bridge=xenbr1']
uuid = "ed1618df-919f-2f47-20ea-7a5bb614e094"
device_model = "/usr/lib64/xen/bin/qemu-dm"
kernel = "/usr/lib/xen/boot/hvmloader"
vnc=1
vncunused=1
apic=1
acpi=1
pae=1

vcpus=4
serial = "pty" # enable serial console
on_reboot   = 'restart'
on_crash    = 'restart'





 

-----Original Message-----
From: Petersson, Mats [mailto:Mats.Petersson@xxxxxxx] 
Sent: Friday, May 18, 2007 12:37 PM
To: Schober Walter; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] How do I find out why Dom0 crashes on guest
startup?

 

> -----Original Message-----
> From: Schober Walter [mailto:Walter.Schober@xxxxxxxxx] 
> Sent: 18 May 2007 11:35
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Cc: Petersson, Mats
> Subject: RE: [Xen-users] How do I find out why Dom0 crashes 
> on guest startup?
> 
> Thanks Mats! I can do a remote serial console via iLO2 on com2: but
> cannot cut&paste from it (Hello HP!) - so I have screenshots only (can
> send them on request) ...
> 
> Finally it tells me
> Panic on CPU 2:
> CPU2 FATAL PAGE FAULT
> [error_code=0000]
> Faulting linear address: 000000000000000
> 
> It happens on the 
> (XEN) (GUEST: 1) Starting emulated 16-bit real-mode: ip=0600:000
> 
> Stack Trace can be sent on request as JPG.

I think a stack-trace would be useful here. I suspect its' someplace in
the HVM/VMX (or SVM) code, but it's much easier to tell what's going on
from a stack-trace. 

--
Mats

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