求助！！

finger

Jul 18 11:47:03 rn12 kernel: Unable to handle kernel NULL pointer dereference at
virtual address 00000000
Jul 18 11:47:03 rn12 kernel:  printing eip:
Jul 18 11:47:03 rn12 kernel: c012e440
Jul 18 11:47:03 rn12 kernel: *pde = 00000000
Jul 18 11:47:03 rn12 kernel: Oops: 0000
Jul 18 11:47:03 rn12 kernel: mercd ctimod nfsd lockd sunrpc eepro100 linear usb-
uhci usbcore ext3 jbd raid1
Jul 18 11:47:03 rn12 kernel: CPU:    0
Jul 18 11:47:03 rn12 kernel: EIP:    0010:[<c012e440>;]    Tainted: PF
Jul 18 11:47:03 rn12 kernel: EFLAGS: 00010003
Jul 18 11:47:03 rn12 kernel:
Jul 18 11:47:03 rn12 kernel: EIP is at kmem_cache_reap [kernel] 0xd0 (2.4.18-5)
Jul 18 11:47:03 rn12 kernel: eax: 00000000   ebx: 00000000   ecx: c17055e0   edx
: c17055f0
Jul 18 11:47:03 rn12 kernel: esi: 0000003f   edi: 00000000   ebp: 00000009   esp
: dfd69f78
Jul 18 11:47:03 rn12 kernel: ds: 0018   es: 0018   ss: 0018
Jul 18 11:47:03 rn12 kernel: Process kswapd (pid: 5, stackpage=dfd69000)
Jul 18 11:47:03 rn12 kernel: Stack: c17055e0 00000000 00000000 00000000 000001d0
00000174 00000000 00000000
Jul 18 11:47:03 rn12 kernel:        c013065e c17070c0 000001d0 c17071a0 000001d0
c1707130 000001d0 000001d0
Jul 18 11:47:03 rn12 kernel:        dfd68000 00000000 00000000 00000000 c02c7220
0000012f 00000000 c0130931
Jul 18 11:47:03 rn12 kernel: Call Trace: [<c013065e>;] do_try_to_free_pages [kern
el] 0x3e
Jul 18 11:47:03 rn12 kernel: [<c0130931>;] kswapd [kernel] 0x101
Jul 18 11:47:03 rn12 kernel: [<c0105000>;] stext [kernel] 0x0
Jul 18 11:47:03 rn12 kernel: [<c0107136>;] kernel_thread [kernel] 0x26
Jul 18 11:47:03 rn12 kernel: [<c0130830>;] kswapd [kernel] 0x0
Jul 18 11:47:03 rn12 kernel:
Jul 18 11:47:03 rn12 kernel:
Jul 18 11:47:03 rn12 kernel: Code: 8b 00 46 39 d0 75 f9 8b 04 24 89 f2 8b 58 28
8b 40 48 88 d9
Jul 18 13:07:23 rn12 kernel:  <6>;md: md0: sync done.

机器有些故障！请帮忙分析一下messages日志，谢谢！！