移植内核的问题。

移植内核的时候终端出现以下信息是什么问题啊？

Start Linux ...
Copy linux kernel from 0x00200000 to 0x30008000, size = 0x00200000 ... Copy Kernel to SDRAM done,NOW, Booting Linux......
Uncompressing Linux....................................................................... done, booting the kernel.
Linux version 2.6.25Android (root@zrf-ubuntu) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #17 Tue May 3 11:25:01 CST 2011
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
Machine: SMDK2440
ATAG_INITRD is deprecated; please update your bootloader.
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C244X: core 400.000 MHz, memory 100.000 MHz, peripheral 50.000 MHz
S3C24XX Clocks, (c) 2004 Simtec Electronics
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
Kernel command line: noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0
irq: clearing pending ext status 00080000
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
PID hash table entries: 256 (order: 8, 1024 bytes)
timer tcon=00500000, tcnt a2c1, tcfg 00000200,00000000, usec 00001eb8
Console: colour dummy device 80x30
console [ttySAC0] enabled
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 5 [#1]
Modules linked in:
CPU: 0    Not tainted  (2.6.25Android #17)
PC is at kmem_cache_alloc+0x20/0x88
LR is at init_rs_internal+0x11c/0x4a4
pc : [<c0077694>]    lr : [<c0131a8c>]    psr: 600000d3
sp : c0213e88  ip : c0213ea8  fp : c0213ea4
r10: 30019ed0  r9 : 00000100  r8 : 00000000
r7 : 00000000  r6 : 000000d0  r5 : 60000053  r4 : 00000000
r3 : 600000d3  r2 : c021e808  r1 : 000000d0  r0 : 00000000