Date:	Thu, 19 Jul 2007 10:12:10 +0200
From:	Rok Markovic <kernel@...ardia.eu>
To:	LKML <linux-kernel@...r.kernel.org>
CC:	linux-arm-kernel@...ts.arm.linux.org.uk
Subject: Oops on arm pxa270 2.6.22

Hi

I would like to ask what could be a problem or how could I start debuging it.
My board is cm-x270 from compulab and it successfully boot until it should
start init from busysbox. I get the folowing report.

environment:
pxa270
128Mb RAM
network boot
gcc 3.4.5 softfloat


Linux image detected in memory at 0xA0100000, booting...
Kernel parameters: root=/dev/nfs ip=:::::eth0: console=ttySA1,38400N1 bpp=16 nfsroot=192.168.10.124:/cm-x270
KERNEL_PARAMS: 0xA0000100
Linux version 2.6.22-cm-x270 (rok@...alhost.localdomain) (gcc version 3.4.5) #2 Thu Jul 19 09:54:50 CEST 2007
CPU: XScale-PXA270 [69054117] revision 7 (ARMv5TE), cr=0000397f
Machine: Compulab CM-x270
ATAG_INITRD is deprecated; please update your bootloader.
Memory policy: ECC disabled, Data cache writeback
Run Mode clock: 208.00MHz (*16)
Turbo Mode clock: 520.00MHz (*2.5, active)
Memory clock: 208.00MHz (/2)
System bus clock: 208.00MHz
CPU0: D VIVT undefined 5 cache
CPU0: I cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
CPU0: D cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
Built 1 zonelists.  Total pages: 32512
Kernel command line: root=/dev/nfs ip=:::::eth0: console=ttySA1,38400N1 bpp=16 nfsroot=192.168.10.124:/cm-x270
PID hash table entries: 512 (order: 9, 2048 bytes)
Console: colour dummy device 80x30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 128MB = 128MB total
Memory: 126848KB available (2492K code, 371K data, 108K init)
SLUB: Genslabs=22, HWalign=32, Order=0-1, MinObjects=4, CPUs=1, Nodes=1
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Time: pxa_timer clocksource has been installed.
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
NetWinder Floating Point Emulator V0.97 (double precision)
io scheduler noop registered
io scheduler cfq registered (default)
pxa2xx-fb pxa2xx-fb: Invalid resolution or bit depth
pxa2xx-fb: probe of pxa2xx-fb failed with error -22
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
RAMDISK driver initialized: 4 RAM disks of 4096K size 1024 blocksize
loop: module loaded
dm9000 Ethernet Driver
eth0: dm9000 at c8802000,c8804008 IRQ 42 MAC: 00:01:c0:02:45:9a
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xdc (Micron NAND 512MiB 3,3V 8-bit)
Scanning device for bad blocks
Bad eraseblock 299 at 0x02560000
Bad eraseblock 2236 at 0x11780000
Using static partition definition
Creating 1 MTD partitions on "NAND 512MiB 3,3V 8-bit":
0x00000000-0x20000000 : "cmx270-0"
usbmon: debugfs is not available
pxa27x-ohci pxa27x-ohci: PXA27x OHCI
pxa27x-ohci pxa27x-ohci: new USB bus registered, assigned bus number 1
pxa27x-ohci pxa27x-ohci: irq 3, io mem 0x4c000000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
mice: PS/2 mouse device common for all mice
usbcore: registered new interface driver usbhid
drivers/hid/usbhid/hid-core.c: v2.6:USB HID core driver
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
XScale iWMMXt coprocessor detected.
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
Sending DHCP requests ., OK
IP-Config: Got DHCP answer from 0.0.0.0, my address is 192.168.10.76
IP-Config: Complete:
      device=eth0, addr=192.168.10.76, mask=255.255.255.0, gw=192.168.10.1,
     host=192.168.10.76, domain=spina.si, nis-domain=(none),
     bootserver=0.0.0.0, rootserver=192.168.10.124, rootpath=
Looking up port of RPC 100003/2 on 192.168.10.124
Looking up port of RPC 100005/1 on 192.168.10.124
VFS: Mounted root (nfs filesystem).
Freeing init memory: 108K
Unable to handle kernel NULL pointer dereference at virtual address 00000004
pgd = c0004000
[00000004] *pgd=00000000
Internal error: Oops: f5 [#1]
Modules linked in:
CPU: 0    Not tainted  (2.6.22-cm-x270 #2)
PC is at init_dev+0x38/0x5b8
LR is at tty_open+0xf8/0x33c
pc : [<c0135dd8>]    lr : [<c0136450>]    psr: 60000013
sp : c0423dec  ip : c0423e38  fp : c0423e34
r10: 00000000  r9 : 00000000  r8 : 00000002
r7 : 00000001  r6 : c04e2200  r5 : c04e0d20  r4 : c02e5c3c
r3 : 00000000  r2 : c0423df0  r1 : c0423e08  r0 : c04e2200
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  Segment kernel
Control: 0000397f  Table: a0004000  DAC: 00000017
Process swapper (pid: 1, stack limit = 0xc0422260)
Stack: (0xc0423dec to 0xc0424000)
3de0:                            c003ab44 00000000 c0423e3c c04e2200 00000000
3e00: 00000002 00000000 c0423e38 c02e5c3c c04e0d20 00500001 00000001 00000002
3e20: 00000000 00000000 c0423e60 c0423e38 c0136450 c0135dac 00000000 00000001
3e40: c02e5c3c c048f76c 00000000 00000000 c04e0d20 c0423e88 c0423e64 c0088600
3e60: c0136364 00000000 c04e0d20 c048f76c c00884ec c04ae364 c0531c80 c0423eb0
3e80: c0423e8c c00847d0 c00884f8 c04e0d20 c0423ed0 00000000 ffffff9c c0422000
3ea0: c0462000 c0423ec8 c0423eb4 c00848a4 c0084654 00000000 00000002 c0423f34
3ec0: c0423ecc c0084908 c008487c c0423ed0 c04ae364 c0531c80 c0423f00 c029c710
3ee0: 40000013 00000101 00000001 00000000 00000000 c041fcc0 c041fcc8 c0422000
3f00: ffffffe8 c0423f34 c0423f14 c0084a80 c009c220 00000003 00000000 c04e0d20
3f20: 00000002 00000000 c0423f60 c0423f38 c0084c48 c00848c8 c003b100 c02afed8
3f40: 00000000 00000000 c001c1f0 c0422000 00000000 c0423f70 c0423f64 c0084cfc
3f60: c0084bf8 c0423f84 c0423f74 c0023300 c0084ce4 c02afed8 c0423ff4 c0423f88
3f80: c0008c80 c00232e0 e1a00008 e1a01006 00000001 e1a0a000 00000000 00000000
3fa0: 00000000 c0423fb0 c0023f24 c0036344 00000000 00000000 c0008b24 c003c9e8
3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3fe0: 00000000 00000000 00000000 c0423ff8 c003c9e8 c0008b30 e1a01007 ebfd4ec0
Backtrace:
[<c0135da0>] (init_dev+0x0/0x5b8) from [<c0136450>] (tty_open+0xf8/0x33c)
[<c0136358>] (tty_open+0x0/0x33c) from [<c0088600>] (chrdev_open+0x114/0x174)
 r8:c04e0d20 r7:00000000 r6:00000000 r5:c048f76c r4:c02e5c3c
[<c00884ec>] (chrdev_open+0x0/0x174) from [<c00847d0>] (__dentry_open+0x188/0x228)
 r8:c0531c80 r7:c04ae364 r6:c00884ec r5:c048f76c r4:c04e0d20
[<c0084648>] (__dentry_open+0x0/0x228) from [<c00848a4>] (nameidata_to_filp+0x34/0x4c)
[<c0084870>] (nameidata_to_filp+0x0/0x4c) from [<c0084908>] (do_filp_open+0x4c/0x50)
 r4:00000002
[<c00848bc>] (do_filp_open+0x0/0x50) from [<c0084c48>] (do_sys_open+0x5c/0xec)
 r5:00000000 r4:00000002
[<c0084bec>] (do_sys_open+0x0/0xec) from [<c0084cfc>] (sys_open+0x24/0x28)
[<c0084cd8>] (sys_open+0x0/0x28) from [<c0023300>] (init_post+0x2c/0xfc)
[<c00232d4>] (init_post+0x0/0xfc) from [<c0008c80>] (kernel_init+0x15c/0x2bc)
 r4:c02afed8
[<c0008b24>] (kernel_init+0x0/0x2bc) from [<c003c9e8>] (do_exit+0x0/0x86c)
Code: e3a03000 e5823000 059030b8 e1a06000 (07935107)
Kernel panic - not syncing: Attempted to kill init!

View attachment "cmx270.config" of type "text/plain" (22709 bytes)

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