管理提醒： 本帖被 qq2440 从 micro2440技术交流专区 移动到本区(2013-11-18)
最近基于Micro2440的核心板自己做了一个模块，网卡用的是DM9000A的，将自己做的模块与Micro2440开发板用网线连起来后，在超级终端观看自己做的模块系统（uboot采用的是友善之臂的supervivi-64M，内核是我自己编译的，根文件系统采用的是友善之臂的rootfs_qtopia_qt4.img）启动后，显示一会Link up一会Link down，互相ping对方的IP地址，出现丢包，并且ping不了一会，就出现死机情况。死机提示错误如下：
Unable to handle kernel NULL pointer dereference at virtual address 000003f2
pgd = c3ab0000
[000003f2] *pgd=33aa7031, *pte=00000000, *ppte=00000000
Internal error: Oops: 813 [#1]
last sysfs file: /sys/devices/virtual/vc/vcsa2/dev
Modules linked in:
CPU: 0 Not tainted (2.6.32.2-FriendlyARM #45)
PC is at vsnprintf+0x894/0xa10
LR is at 0x656e696c
pc : [<c014bf9c>] lr : [<656e696c>] psr: a0000093
sp : c043fd20 ip : c047bba4 fp : c043fdac
r10: ffffffff r9 : ffffffff r8 : c047bfa4
r7 : c047bbb5 r6 : c03f5077 r5 : c043fe74 r4 : c03f5075
r3 : 000003f2 r2 : 00000011 r1 : 00000002 r0 : c047bbb5
Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: c000717f Table: 33ab0000 DAC: 00000017
Process swapper (pid: 0, stack limit = 0xc043e270)
Stack: (0xc043fd20 to 0xc0440000)
fd20: 000000c1 c3a86300 0000000d 0000000e 00000000 c3a86300 c043fd68 c043fd6c
fd40: c043fd5c c043fd50 c00450cc c0044f68 c043fd6c 00000400 c047bba4 00000000
fd60: ffffffff c043fe74 c0053d58 c0053a5c 00000001 c3aa61e0 c3aa61f4 c3a86300
fd80: 0000000e 00000400 c0445534 00000000 60000093 c043fe74 fffffff0 00000004
fda0: c043fdc4 c043fdb0 c014c1ec c014b718 c03f5064 c0445534 c043fe54 c043fdc8
fdc0: c004847c c014c1e8 c043fdfc c043fdd8 c00552cc c0054570 60000093 a0000093
fde0: 0000000e c3a86300 00000001 c049d530 c043fe1c c043fe00 c0055598 c0055290
fe00: c043fe34 c043fe10 c0070110 c00384d4 c043fe3c c043fe20 c00555d4 00000000
fe20: 00000001 00000033 c043fe54 c38c22c0 c38c2000 00000000 00000066 00000001
fe40: fffffff0 a0000013 c043fe6c c043fe58 c0325320 c0048410 ffffffff c043fe74
fe60: c043febc c043fe80 c01a3cbc c032530c c03f5064 000003f2 00000001 00000801
fe80: 00000000 00000002 c390e480 00660801 c049e7dc c390e480 00000000 00000000
fea0: 00000033 3001de94 41129200 3001de60 c043fedc c043fec0 c006e4e0 c01a3aa8
fec0: c0448084 00000033 c049e7dc c0442428 c043ff04 c043fee0 c0070048 c006e490
fee0: 00000009 0000000a 3001de94 00000000 00000001 00000033 c043ff24 c043ff08
ff00: c0038c80 c006ffb0 c0454244 00000014 00000000 c0442428 c043ff44 c043ff28
ff20: c002e044 c0038bfc ffffffff f4000000 00000010 c0442428 c043ff9c c043ff48
ff40: c002eac4 c002e010 00f97ff4 f4100000 f4100000 60000013 c043e000 c047b0a4
ff60: c0442430 c0442428 3001de94 41129200 3001de60 c043ff9c c043ffa0 c043ff90
ff80: c00305fc c00300a4 60000013 ffffffff c043ffbc c043ffa0 c00305fc c0030028
ffa0: c049e85c c001fca0 c001fc9c c0442428 c043ffcc c043ffc0 c0323c1c c0030594
ffc0: c043fff4 c043
上面信息什么意思？？？还请哪位大侠帮忙解释下！！！！！！
