[BusyBox] Kernel crashing

[Gaurav Shukla]

hi list,
I am a newbie to this list and the query I am putting across is quite abstruse.
a few days back I received the following error messages on my linux
server screen
=====
Unable to handle Kernel
NULL pointer dereference at Virtual address 00000004
Printing EIP: c014127f
*pde = 00000000
OOPS = 0002
smbfs binfrnt_misc cpqci autofs
PCmcia_core tg3 eepro100 usb_oh_ci usbcore ext3
cpu 0
EIP 0010: [<c014127f>] tainted: PF
EFLAGS: 00010286
EIP is at get_unused_fd [Kernel] 0x1f (2.4.18-3 smp)
eax 00000004 ebx f0212000: ecx 00000045 esi 00000002 edi 0808dd18
ebp 00000000 esp eededf8c
ds 0018 es 0018 ss 0018
Process (pid: 0 Spackage = (edcd000)
stack: 00000000 00000000 00000000 ffffffe8 f6212000 00000002 
0808dd18 f6212000 c01413e0 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000   00000000 00000000 00000000 00000000 00000000
00000000 00000000
Call Trace: [<c01413e0>]sys_open [Kernel] 0x20
code: f0 812800 00 00 01 0f 85 39 04 99 8b 45 1c 31 f6 89 44 <0> 
kernel panic: attempt to kill the idle task In idle task- not syncing
=============

Can someone guide me why and how I am getting this message and what
does this refer to??