Unable to handle kernel NULL pointer dereference at virtual address 00000018
 printing eip:
f89e3f6a
*pde = 00000000
Oops: 0000
soundcore wct4xxp zaptel parport_pc lp parport autofs e1000 ipt_REJECT iptable_filter ip_tables microcode keybdev mousedev hid input usb-uhci usbcore ext3 jbd
CPU:    0
EIP:    0060:[<f89e3f6a>]    Not tainted
EFLAGS: 00010082

EIP is at __zt_getbuf_chunk [zaptel] 0x14e (2.4.20-28.9smp)
eax: 00000000   ebx: f52777a8   ecx: 00000001   edx: f6552000
esi: f5277834   edi: f65d11e8   ebp: f52777a8   esp: f5213b80
ds: 0068   es: 0068   ss: 0068
Process sshd (pid: 3377, stackpage=f5213000)
Stack: 0000cd08 0000cd08 00000008 f52777a8 f5277834 f65d11e8 00006f1c f89df885 
       f52777a8 f5277834 f5a2c480 00000087 0000779a 0000779a 0000779a 0000779a 
       0000779a 0000779a 00000087 0000000e 00000000 1cd27388 00000082 0000c494 
Call Trace:   [<f89df885>] zt_transmit [zaptel] 0x1ad (0xf5213b9c))
[<f8a15cd6>] t4_transmitprep [wct4xxp] 0x21e (0xf5213bfc))
[<f8a11631>] t4_interrupt [wct4xxp] 0x191 (0xf5213c4c))
[<c010b359>] handle_IRQ_event [kernel] 0x69 (0xf5213c7c))
[<c010b589>] do_IRQ [kernel] 0xa9 (0xf5213c9c))
[<c022cf60>] ip_queue_xmit2 [kernel] 0x0 (0xf5213cb4))
[<c010e568>] call_do_IRQ [kernel] 0x5 (0xf5213cc0))
[<c022cf60>] ip_queue_xmit2 [kernel] 0x0 (0xf5213cd0))
[<f898c910>] packet_filter [iptable_filter] 0x30 (0xf5213cdc))
[<f8987131>] ipt_do_table_Rsmp_c95919bf [ip_tables] 0xa1 (0xf5213cec))
[<c021bc9f>] qdisc_restart [kernel] 0x1f (0xf5213d00))
[<c0210350>] dev_queue_xmit [kernel] 0x290 (0xf5213d18))
[<f8989c50>] nulldevname.1 [ip_tables] 0x0 (0xf5213d24))
[<c022cf60>] ip_queue_xmit2 [kernel] 0x0 (0xf5213d44))
[<f898c112>] ipt_local_out_hook [iptable_filter] 0x72 (0xf5213d50))
[<f898c8e0>] packet_filter [iptable_filter] 0x0 (0xf5213d64))
[<c0217da4>] nf_iterate [kernel] 0x54 (0xf5213d6c))
[<c022cf60>] ip_queue_xmit2 [kernel] 0x0 (0xf5213d80))
[<c022cf60>] ip_queue_xmit2 [kernel] 0x0 (0xf5213d90))
[<c021810c>] nf_hook_slow [kernel] 0x9c (0xf5213d94))
[<c022cf60>] ip_queue_xmit2 [kernel] 0x0 (0xf5213db0))
[<f898c950>] ipt_ops [iptable_filter] 0x30 (0xf5213db8))
[<c022bca8>] ip_queue_xmit [kernel] 0x248 (0xf5213dcc))
[<c022cf60>] ip_queue_xmit2 [kernel] 0x0 (0xf5213de4))
[<c02286c3>] ip_local_deliver [kernel] 0x53 (0xf5213dec))
[<c024226d>] tcp_v4_send_check [kernel] 0x4d (0xf5213dfc))
[<c023c987>] tcp_transmit_skb [kernel] 0x2c7 (0xf5213e1c))
[<c023d544>] tcp_write_xmit [kernel] 0x184 (0xf5213e5c))
[<c020b834>] alloc_skb [kernel] 0xc4 (0xf5213e6c))
[<c02315be>] tcp_sendmsg [kernel] 0x57e (0xf5213e84))
[<c0149a7d>] __alloc_pages [kernel] 0x7d (0xf5213eb4))
[<c0251cb2>] inet_sendmsg [kernel] 0x42 (0xf5213efc))
[<c0207b08>] sock_sendmsg [kernel] 0x78 (0xf5213f10))
[<c0207d9e>] sock_write [kernel] 0xae (0xf5213f54))
[<c0153017>] sys_write [kernel] 0x97 (0xf5213f94))
[<c01098cf>] system_call [kernel] 0x33 (0xf5213fc0))


Code: 8b 48 18 85 c9 0f 84 bc 01 00 00 8b 95 2c 05 00 00 85 d2 0f 
 <0>Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing