Unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
e0a25240
*pde = 00000000
Oops: 0002 [#1]
Modules linked in: ip_in_intercept ppdev autofs4 hidp l2cap bluetooth sunrpc video button battery ac lp parport_pc parport d
CPU:    0
EIP:    0060:[<e0a25240>]    Not tainted VLI
EFLAGS: 00010282   (2.6.15-07.05-15)
EIP is at process_tcp_ack+0x40a/0x478 [ip_in_intercept]
eax: ceae9200   ebx: 00000006   ecx: 000000a0   edx: 00000001
esi: ddbcc000   edi: 00000000   ebp: de0e3600   esp: c03cde90
ds: 007b   es: 007b   ss: 0068
Process swapper (pid: 0, threadinfo=c03cd000 task=c032fb80)
Stack: 00000000 00000001 cb8c57c0 00000000 00000001 cddee200 cbe39034 cbe39020
       ceaefd60 888aeaad 888aeaad ffffffff ffffffff de0e3600 cb8c57c0 ceaef1e0
       00000001 e0a2553d 00000014 cddee200 cbe39020 cbe39034 c03177aa c03cdefc
Call Trace:
 [<e0a2553d>] process_in_pkt+0x28f/0x60c [ip_in_intercept]
 [<c02c3952>] search_sfi+0x57/0x8f
 [<e0a25a74>] ip_in_hook_filter+0x1ba/0x333 [ip_in_intercept]
 [<c0297ee5>] nf_iterate+0x30/0x61
 [<c029d0c7>] ip_rcv_finish+0x0/0x1f9
 [<c0297f50>] nf_hook_slow+0x3a/0xb3
 [<c029d0c7>] ip_rcv_finish+0x0/0x1f9
 [<c029cea7>] ip_rcv+0x1ca/0x3ea
 [<c029d0c7>] ip_rcv_finish+0x0/0x1f9
 [<c028477e>] netif_receive_skb+0x1fc/0x23e
 [<c028482d>] process_backlog+0x6d/0xd2
 [<c028490a>] net_rx_action+0x78/0x122
 [<c011ecd5>] __do_softirq+0x35/0x7f
 [<c0104863>] do_softirq+0x38/0x3f
 =======================
 [<c0104796>] do_IRQ+0x6e/0x77
 [<c010356a>] common_interrupt+0x1a/0x20
 [<c01f3d2f>] acpi_safe_halt+0x15/0x1b
 [<c01f3e6c>] acpi_processor_idle+0x137/0x2c7
 [<c01010a5>] cpu_idle+0x3a/0x4f
 [<c039d679>] start_kernel+0x17a/0x17c
Code: f9 c7 6f df a1 04 83 a2 e0 89 30 a1 04 83 a2 e0 8b 54 24 04 89 50 04 8b 4c 24 08 a1 04 83 a2 e0 8b 71 14 b9 a0 00 00
 <0>Kernel panic - not syncing: Fatal exception in interrupt