DomU's qemu crashed with "Bad ram offset" using xen stable-4.6

DomU's qemu crashed with "Bad ram offset" using xen stable-4.6

[Fabio Fantoni]

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Dom0: Squeeze 64 bit with kernel 4.1.6 and xen stable-4.6 based on 
commit 70d63e48077f8fee8eda6d8d95eeda52a34d9077
DomU W7 pro 64 bit with new pv drivers, xl cfg in attachment.

Qemu crash on windows boot with this line in log:
> Bad ram offset 805b1000

xl dmesg about the domU:
> (d4) HVM Loader
> (d4) Detected Xen v4.6.0-rc
> (d4) Xenbus rings @0xfeffc000, event channel 1
> (d4) System requested SeaBIOS
> (d4) CPU speed is 2660 MHz
> (d4) Relocating guest memory for lowmem MMIO space disabled
> (XEN) irq.c:275: Dom4 PCI link 0 changed 0 -> 5
> (d4) PCI-ISA link 0 routed to IRQ5
> (XEN) irq.c:275: Dom4 PCI link 1 changed 0 -> 10
> (d4) PCI-ISA link 1 routed to IRQ10
> (XEN) irq.c:275: Dom4 PCI link 2 changed 0 -> 11
> (d4) PCI-ISA link 2 routed to IRQ11
> (XEN) irq.c:275: Dom4 PCI link 3 changed 0 -> 5
> (d4) PCI-ISA link 3 routed to IRQ5
> (d4) pci dev 01:3 INTA->IRQ10
> (d4) pci dev 02:0 INTA->IRQ11
> (d4) pci dev 03:0 INTA->IRQ5
> (d4) pci dev 04:0 INTA->IRQ5
> (d4) pci dev 05:0 INTA->IRQ10
> (d4) pci dev 06:0 INTA->IRQ11
> (d4) pci dev 07:0 INTA->IRQ5
> (d4) No RAM in high memory; setting high_mem resource base to 100000000
> (d4) pci dev 05:0 bar 10 size 004000000: 0f0000000
> (d4) pci dev 05:0 bar 14 size 004000000: 0f4000000
> (d4) pci dev 02:0 bar 14 size 001000000: 0f8000008
> (d4) pci dev 06:0 bar 30 size 000040000: 0f9000000
> (d4) pci dev 05:0 bar 30 size 000010000: 0f9040000
> (d4) pci dev 03:0 bar 10 size 000004000: 0f9050000
> (d4) pci dev 05:0 bar 18 size 000002000: 0f9054000
> (d4) pci dev 04:0 bar 14 size 000001000: 0f9056000
> (d4) pci dev 07:0 bar 24 size 000001000: 0f9057000
> (d4) pci dev 02:0 bar 10 size 000000100: 00000c001
> (d4) pci dev 06:0 bar 10 size 000000100: 00000c101
> (d4) pci dev 06:0 bar 14 size 000000100: 0f9058000
> (d4) pci dev 04:0 bar 10 size 000000020: 00000c201
> (d4) pci dev 05:0 bar 1c size 000000020: 00000c221
> (d4) pci dev 07:0 bar 20 size 000000020: 00000c241
> (d4) pci dev 01:1 bar 20 size 000000010: 00000c261
> (d4) Multiprocessor initialisation:
> (d4)  - CPU0 ... 36-bit phys ... fixed MTRRs ... var MTRRs [1/8] ... done.
> (d4)  - CPU1 ... 36-bit phys ... fixed MTRRs ... var MTRRs [1/8] ... done.
> (d4) Writing SMBIOS tables ...
> (d4) Loading SeaBIOS ...
> (d4) Creating MP tables ...
> (d4) Loading ACPI ...
> (d4) S3 disabled
> (d4) S4 disabled
> (d4) vm86 TSS at fc00a100
> (d4) BIOS map:
> (d4)  10000-100d3: Scratch space
> (d4)  c0000-fffff: Main BIOS
> (d4) E820 table:
> (d4)  [00]: 00000000:00000000 - 00000000:000a0000: RAM
> (d4)  HOLE: 00000000:000a0000 - 00000000:000c0000
> (d4)  [01]: 00000000:000c0000 - 00000000:00100000: RESERVED
> (d4)  [02]: 00000000:00100000 - 00000000:78000000: RAM
> (d4)  HOLE: 00000000:78000000 - 00000000:fc000000
> (d4)  [03]: 00000000:fc000000 - 00000001:00000000: RESERVED
> (d4) Invoking SeaBIOS ...
> (d4) SeaBIOS (version Debian-1.8.2-1)
> (d4)
> (d4) Found Xen hypervisor signature at 40000100
> (d4) Running on QEMU (i440fx)
> (d4) xen: copy e820...
> (d4) Relocating init from 0x000df450 to 0x77faf480 (size 68288)
> (d4) CPU Mhz=2661
> (d4) Found 10 PCI devices (max PCI bus is 00)
> (d4) Allocated Xen hypercall page at 77fff000
> (d4) Detected Xen v4.6.0-rc
> (d4) xen: copy BIOS tables...
> (d4) Copying SMBIOS entry point from 0x00010010 to 0x000f6780
> (d4) Copying MPTABLE from 0xfc001160/fc001170 to 0x000f6680
> (d4) Copying PIR from 0x00010030 to 0x000f6600
> (d4) Copying ACPI RSDP from 0x000100b0 to 0x000f65d0
> (d4) Using pmtimer, ioport 0xb008
> (d4) Scan for VGA option rom
> (d4) Running option rom at c000:0003
> (XEN) stdvga.c:147:d4v0 entering stdvga and caching modes
> (d4) pmm call arg1=0
> (d4) Turning on vga text mode console
> (XEN) stdvga.c:520:d4v0 leaving caching mode
> (d4) SeaBIOS (version Debian-1.8.2-1)
> (d4) Machine UUID 295a3edd-3e4a-4b40-b3a1-22da17f487d5
> (d4) All threads complete.
> (d4) Found 0 lpt ports
> (d4) Found 0 serial ports
> (d4) ATA controller 1 at 1f0/3f4/0 (irq 14 dev 9)
> (d4) ATA controller 2 at 170/374/0 (irq 15 dev 9)
> (d4) AHCI controller at 07.0, iobase f9057000, irq 5
> (d4) Searching bootorder for: /pci@i0cf8/*@7/drive@0/disk@0
> (d4) AHCI/0: registering: "AHCI/0: QEMU HARDDISK ATA-7 Hard-Disk 
> (50000 MiBytes)"
> (d4) DVD/CD [ata0-1: QEMU DVD-ROM ATAPI-4 DVD/CD]
> (d4) Searching bootorder for: /pci@i0cf8/*@1,1/drive@0/disk@1
> (d4) PS2 keyboard initialized
> (d4) All threads complete.
> (d4) Scan for option roms
> (d4) Running option rom at c980:0003
> (d4) pmm call arg1=1
> (d4) pmm call arg1=0
> (d4) pmm call arg1=1
> (d4) pmm call arg1=0
> (d4) Searching bootorder for: /pci@i0cf8/*@6
> (d4)
> (d4) Press F12 for boot menu.
> (d4)
> (d4) Searching bootorder for: HALT
> (d4) drive 0x000f6540: PCHS=16383/16/63 translation=lba 
> LCHS=1024/255/63 s=102400000
> (d4)
> (d4) Space available for UMB: ca800-ee800, f5fa0-f64e0
> (d4) Returned 253952 bytes of ZoneHigh
> (d4) e820 map has 6 items:
> (d4)   0: 0000000000000000 - 000000000009fc00 = 1 RAM
> (d4)   1: 000000000009fc00 - 00000000000a0000 = 2 RESERVED
> (d4)   2: 00000000000f0000 - 0000000000100000 = 2 RESERVED
> (d4)   3: 0000000000100000 - 0000000077ffe000 = 1 RAM
> (d4)   4: 0000000077ffe000 - 0000000078000000 = 2 RESERVED
> (d4)   5: 00000000fc000000 - 0000000100000000 = 2 RESERVED
> (d4) enter handle_19:
> (d4)   NULL
> (d4) Booting from Hard Disk...
> (d4) Booting from 0000:7c00
> (XEN) d4: VIRIDIAN GUEST_OS_ID: vendor: 1 os: 4 major: 6 minor: 1 sp: 
> 1 build: 1db1
> (XEN) d4: VIRIDIAN HYPERCALL: enabled: 1 pfn: 3ffff
> (XEN) d4v0: VIRIDIAN APIC_ASSIST: enabled: 1 pfn: 3fffe
> (XEN) d4v1: VIRIDIAN APIC_ASSIST: enabled: 1 pfn: 3fffd
> (XEN) irq.c:275: Dom4 PCI link 0 changed 5 -> 0
> (XEN) irq.c:275: Dom4 PCI link 1 changed 10 -> 0
> (XEN) irq.c:275: Dom4 PCI link 2 changed 11 -> 0
> (XEN) irq.c:275: Dom4 PCI link 3 changed 5 -> 0
> (XEN) d4v0: upcall vector b0
> (XEN) d4v1: upcall vector b0
> (XEN) irq.c:385: Dom4 callback via changed to GSI 24

If you need more informations or tests tell me and I'll post them.

Thanks for any reply and sorry for my bad english.



[-- Attachment #2: W7.cfg --]
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name='W7'
builder="hvm"
memory=2048
vcpus=2
acpi_s3=0
acpi_s4=0
hdtype="ahci"
vif=['bridge=xenbr0,mac=00:16:3e:42:ae:8f']
disk=['/mnt/vm2/W7.disk1.xm,raw,hda,rw',',raw,hdb,ro,cdrom']
boot='cd'
device_model_version="qemu-xen"
viridian=1
vnc=0
#vncunused=1
#vnclisten="0.0.0.0"
keymap="it"
on_crash="destroy"
vga="qxl"
spice=1
spicehost='0.0.0.0'
spiceport=6002
spicedisable_ticketing=1
spicevdagent=1
spice_clipboard_sharing=0
#spiceusbredirection=4
soundhw="hda"
localtime=1

device_model_args=["-trace","events=/etc/xen/qemu-trace-options"]

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