Was using vpnc due to unhappiness with cipe over the weekend and got the
following oops from the tun code

general protection fault: 3cfc
tun cmpci soundcore parport_pc lp parport nfsd lockd sunrpc iptable_filter
ip_tables cipcb tulip sg sr_mod cdrom loop keybdev mousedev hid input usb-uhci usbc
CPU:    0
EIP:    0060:[<ca5515f7>]    Not tainted
EFLAGS: 00010282
                                                                                
EIP is at ___strtok_R29805c13 [] 0xa17ff7b (2.4.20-2.48)
eax: e045e02a   ebx: ca5515c0   ecx: d0d76080   edx: ca5515c0
esi: dd5f97d0   edi: d9b87b00   ebp: 00000068   esp: dd035da4
ds: 0068   es: 0068   ss: 0068
Process vpnc (pid: 3622, stackpage=dd035000)
Stack: 00000068 00c03cfe c0207db8 ca5515c0 dd5f97d0 00000000 00000068 00000000
       0207926f 00000020 00000040 c567da40 fffffff3 00000068 00000000 fce9bb42
       c02213eb ca5515c0 c0221100 dd035e2c 00000068 dd035e3c d0d76080 00000000
Call Trace:   [<c0207db8>] ip_build_xmit [kernel] 0x26c (0xdd035dac))
[<c02213eb>] raw_sendmsg [kernel] 0x20f (0xdd035de4))
[<c0221100>] raw_getrawfrag [kernel] 0x0 (0xdd035dec))
[<c0229612>] inet_sendmsg [kernel] 0x42 (0xdd035e5c))
[<c01e78c4>] sock_sendmsg [kernel] 0x78 (0xdd035e70))
[<c01e88df>] sys_sendto [kernel] 0xe3 (0xdd035eb4))
[<c019c878>] account_io_end [kernel] 0x2c (0xdd035eec))
[<c01c3291>] start_request [kernel] 0x1c5 (0xdd035f04))
[<c01c33fa>] ide_do_request [kernel] 0xa6 (0xdd035f40))
[<c01ca7b0>] ide_dma_intr [kernel] 0x0 (0xdd035f6c))
[<c01e9219>] sys_socketcall [kernel] 0x18d (0xdd035f80))
[<c01093b3>] system_call [kernel] 0x33 (0xdd035fc0))
                                                                                
Code: ca ff ff 00 00 b0 e6 ee d3 00 00 00 00 00 00 00 00 08 16 55
 <1>Unable to handle kernel NULL pointer dereference at virtual address 000000d0
printing eip:
c01ffc90
*pde = 00000000
Oops: 0000
tun cmpci soundcore parport_pc lp parport nfsd lockd sunrpc iptable_filter
ip_tables cipcb tulip sg sr_mod cdrom loop keybdev mousedev hid input usb-uhci usbc
CPU:    0
EIP:    0060:[<c01ffc90>]    Not tainted
EFLAGS: 00010206
                                                                                
EIP is at rt_run_flush [kernel] 0x60 (2.4.20-2.48)
eax: 00000000   ebx: 000000c0   ecx: 00000b5f   edx: 000000c0
esi: 00000ace   edi: 00000002   ebp: da5b1c40   esp: dd035c4c
ds: 0068   es: 0068   ss: 0068
Process vpnc (pid: 3622, stackpage=dd035000)
Stack: d0d76080 dde0bc24 dde0bc24 c022c08b 00000000 dde0bc24 00000000 c03419e0
       c022c1b7 dde0bc24 00000000 c03419e0 dde0bc24 c0127bdd c03419e0 00000002
       dde0bc24 dde0bc24 dde0bc24 cad94540 c01ef065 c033f280 00000002 dde0bc24
Call Trace:   [<c022c08b>] fib_disable_ip [kernel] 0x33 (0xdd035c58))
[<c022c1b7>] fib_netdev_event [kernel] 0x97 (0xdd035c6c))
[<c0127bdd>] notifier_call_chain [kernel] 0x31 (0xdd035c80))
[<c01ef065>] dev_close [kernel] 0xad (0xdd035c9c))
[<e0a0aa09>] tun_chr_close [tun] 0xb9 (0xdd035cb4))
[<c0144b32>] fput [kernel] 0x102 (0xdd035ccc))
[<c01431dd>] filp_close [kernel] 0x4d (0xdd035ce8))
[<c011e28c>] put_files_struct [kernel] 0x6c (0xdd035d00))
[<c011e960>] do_exit [kernel] 0x100 (0xdd035d1c))
[<c0109e24>] do_general_protection [kernel] 0x0 (0xdd035d30))
[<c0109a70>] do_divide_error [kernel] 0x0 (0xdd035d38))
[<c0109e75>] do_general_protection [kernel] 0x51 (0xdd035d4c))
[<c01094a4>] error_code [kernel] 0x34 (0xdd035d64))
[<c0207db8>] ip_build_xmit [kernel] 0x26c (0xdd035dac))
[<c02213eb>] raw_sendmsg [kernel] 0x20f (0xdd035de4))
[<c0221100>] raw_getrawfrag [kernel] 0x0 (0xdd035dec))
[<c0229612>] inet_sendmsg [kernel] 0x42 (0xdd035e5c))
[<c01e78c4>] sock_sendmsg [kernel] 0x78 (0xdd035e70))
[<c01e88df>] sys_sendto [kernel] 0xe3 (0xdd035eb4))
[<c019c878>] account_io_end [kernel] 0x2c (0xdd035eec))
[<c01c3291>] start_request [kernel] 0x1c5 (0xdd035f04))
[<c01c33fa>] ide_do_request [kernel] 0xa6 (0xdd035f40))
[<c01ca7b0>] ide_dma_intr [kernel] 0x0 (0xdd035f6c))
[<c01e9219>] sys_socketcall [kernel] 0x18d (0xdd035f80))
[<c01093b3>] system_call [kernel] 0x33 (0xdd035fc0))
                                                                                
                                                                                
Code: 83 7a 10 01 8b 1a 7e 0d 85 db 89 da 75 f2 4e 79 af 58 5b 5e