[Qemu-ppc] ERROR: Unable to handle kernel paging request for data ...

[Luisa Posani]

Hi guys

I have some problems with qemu-system-ppc.
I tried if someone else had the same problem in the community but nothing...

I try to explain the problem..

I make a disk image (disk.img) and a kernel (vmlinux) using a buildroot ( Buildroot 2012.11.1).
with the following command tries to run the virtual machine..

qemu-system-ppc -hda disk.img -kernel vmlinux -append "rw root=/dev/hda console=ttyS0" -nographic

In a PC whit debian qemu work correctly and in another pc I have the follow error

>> =============================================================
>> OpenBIOS 1.0 [Feb 27 2010 23:01]
>> Configuration device id QEMU version 1 machine id 2
>> CPUs: 1
>> Memory: 128M
>> UUID: 00000000-0000-0000-0000-000000000000
>> CPU type PowerPC,750
Welcome to OpenBIOS v1.0 built on Feb 27 2010 23:01

>> [ppc] Kernel already loaded (0x01000000 + 0x003df43c) (initrd 0x00000000 + 0x00000000)
>> [ppc] Kernel command line: rw root=/dev/hda console=ttyS0
OF stdout device is: /address@hidden/address@hidden/address@hidden/address@hidden
Preparing to boot Linux version 2.6.32.5-g9f61c45 (address@hidden) (gcc version 4.6.3 (Buildroot 2012.11.1-g182dc4d-dirty) ) #12 Mon Jun 10 18:14:19 CEST 2013
command line: rw root=/dev/hda console=ttyS0
memory layout at init:
  memory_limit : 00000000 (16 MB aligned)
  alloc_bottom : 013e4000
  alloc_top    : 08000000
  alloc_top_hi : 08000000
  rmo_top      : 08000000
  ram_top      : 08000000
found display   : /address@hidden/QEMU,address@hidden, opening... done
copying OF device tree...
Building dt strings...
Building dt structure...
Device tree strings 0x013e5000 -> 0x013e5383
Device tree struct  0x013e6000 -> 0x013e8000
Calling quiesce...
returning from prom_init
console [ttyS0] enabled, bootconsole disabled
Mount-cache hash table entries: 512
NET: Registered protocol family 16
PCI: Probing PCI hardware
bio: create slab <bio-0> at 0
vgaarb: device added: PCI:0000:00:01.0,decodes=io+mem,owns=mem,locks=none
vgaarb: loaded
SCSI subsystem initialized
Switching to clocksource timebase
Switched to NOHz mode on CPU #0
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
NET: Registered protocol family 1
squashfs: version 4.0 (2009/01/31) Phillip Lougher
msgmni has been set to 245
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pmac_zilog: 0.6 (Benjamin Herrenschmidt <address@hidden>)
ttyS0 at MMIO 0x80893020 (irq = 16) is a Z85c30 ESCC - Serial port
ttyS1 at MMIO 0x80893000 (irq = 17) is a Z85c30 ESCC - Serial port
loop: module loaded
MacIO PCI driver attached to Heathrow chipset
Uniform Multi-Platform E-IDE driver
ide-pmac: Found Apple Heathrow ATA controller (macio), bus ID 0, irq 19
hda: QEMU HARDDISK, ATA DISK drive
hda: MWDMA2 mode selected
ide0 at 0xc9010000-0xc9010070,0xc9010160 on irq 19
ide-gd driver 1.18
hda: max request size: 512KiB
hda: 262144 sectors (134 MB) w/256KiB Cache, CHS=260/255/63
hda: cache flushes supported
 hda: unknown partition table
Intel(R) PRO/1000 Network Driver - version 7.3.21-k5-NAPI
Copyright (c) 1999-2006 Intel Corporation.
e1000e: Intel(R) PRO/1000 Network Driver - 1.0.2-k2
e1000e: Copyright (c) 1999-2008 Intel Corporation.
ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver - version 2.0.44-k2
ixgbe: Copyright (c) 1999-2009 Intel Corporation.
Intel(R) PRO/10GbE Network Driver - version 1.0.135-k2-NAPI
Copyright (c) 1999-2008 Intel Corporation.
mice: PS/2 mouse device common for all mice
TCP cubic registered
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
kjournald starting.  Commit interval 5 seconds
EXT3 FS on hda, internal journal
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) on device 3:0.
Freeing unused kernel memory: 176k init
/sbin/initUnable to handle kernel paging request for data at address 0x00000084
Faulting instruction address: 0xc0143f60
Oops: Kernel access of bad area, sig: 11 [#1]
PowerMac
NIP: c0143f60 LR: c015fed0 CTR: c015febc
REGS: c7827be0 TRAP: 0300   Not tainted  (2.6.32.5-g9f61c45)
MSR: 00009032 <EE,ME,IR,DR>  CR: 42004082  XER: 00000000
DAR: 00000084, DSISR: 40000000
TASK = c7825930[1] 'init' THREAD: c7826000
GPR00: c015fed0 c7827c90 c7825930 00000000 c7825930 19bd03e6 ffffffff ffd9da60
GPR08: 00000000 c7874268 00000000 00000001 22004082 100c15a4 05483248 00000020
GPR16: 0138076c 0131c0ac 0131bc3c 0138070c 0131bbb8 00000006 c031faa8 c0382d78
GPR24: 00000000 c0382bf8 c03cca60 00000000 00000000 00000001 c03d0000 00000000
NIP [c0143f60] tty_wakeup+0x14/0xa0
LR [c015fed0] uart_tasklet_action+0x14/0x24
Call Trace:
[c7827ca0] [c015fed0] uart_tasklet_action+0x14/0x24
[c7827cb0] [c00328b8] tasklet_action+0xec/0xf0
[c7827cd0] [c0032e50] __do_softirq+0xb4/0x138
[c7827d10] [c0006100] do_softirq+0x58/0x5c
[c7827d20] [c0032fc4] irq_exit+0x84/0x88
[c7827d30] [c0006090] do_IRQ+0x98/0xb0
[c7827d50] [c0014c44] ret_from_except+0x0/0x1c
--- Exception: 501 at uart_start+0x7c/0x90
    LR = uart_start+0x78/0x90
[c7827e20] [c0161194] uart_write+0xb8/0xdc
[c7827e50] [c014979c] n_tty_write+0x1c8/0x45c
[c7827eb0] [c01443c0] tty_write+0x140/0x274
[c7827ef0] [c00867d8] vfs_write+0xa8/0x158
[c7827f10] [c0086964] sys_write+0x4c/0x90
[c7827f40] [c0014578] ret_from_syscall+0x0/0x40
--- Exception: c01 at 0x48002314
    LR = 0x480031c4
Instruction dump:
4bffff64 3c60c033 3863ea64 4817c731 7fe00124 38000000 4bffff4c 9421fff0
7c0802a6 bfc10008 7c7f1b78 90010014 <80030084> 70090020 4082002c 387f00e0
Kernel panic - not syncing: Fatal exception in interrupt
Call Trace:
[c7827b10] [c0009420] show_stack+0x48/0x168 (unreliable)
[c7827b50] [c02c05a0] panic+0x8c/0x158
[c7827ba0] [c0011e60] die+0xfc/0x158
[c7827bc0] [c00187d0] bad_page_fault+0x90/0xc8
[c7827bd0] [c0014a30] handle_page_fault+0x7c/0x80
--- Exception: 300 at tty_wakeup+0x14/0xa0
    LR = uart_tasklet_action+0x14/0x24
[c7827c90] [00000000] (null) (unreliable)
[c7827ca0] [c015fed0] uart_tasklet_action+0x14/0x24
[c7827cb0] [c00328b8] tasklet_action+0xec/0xf0
[c7827cd0] [c0032e50] __do_softirq+0xb4/0x138
[c7827d10] [c0006100] do_softirq+0x58/0x5c
[c7827d20] [c0032fc4] irq_exit+0x84/0x88
[c7827d30] [c0006090] do_IRQ+0x98/0xb0
[c7827d50] [c0014c44] ret_from_except+0x0/0x1c
--- Exception: 501 at uart_start+0x7c/0x90
    LR = uart_start+0x78/0x90
[c7827e20] [c0161194] uart_write+0xb8/0xdc
[c7827e50] [c014979c] n_tty_write+0x1c8/0x45c
[c7827eb0] [c01443c0] tty_write+0x140/0x274
[c7827ef0] [c00867d8] vfs_write+0xa8/0x158
[c7827f10] [c0086964] sys_write+0x4c/0x90
[c7827f40] [c0014578] ret_from_syscall+0x0/0x40
--- Exception: c01 at 0x48002314
    LR = 0x480031c4
Rebooting in 180 seconds..


I do not understand where I'm wrong.

I tried to change options (such as-cpu-machine-M) but can't find proper documentation.

Can someone give me some suggestions?

qemu version is different :
on pc that work fine I have
QEMU emulator version 1.1.2 (Debian 1.1.2+dfsg-6a)

on pc that work bad I have
QEMU PC emulator version 0.12.5 (Debian 0.12.5+dfsg-3squeeze3)

PC are update

Help me please

Luisa