Oops in 2.2.19

[Aaron Gowatch]

This oops occurred a few days ago that is basically a very, very busy
proxy.  I'm new to kernel debugging, and I havent been on linux-kernel in 
a few years, but I thought someone here might be able to help find the 
cause.

Happy to provide any other information that might be needed...

Box is running an unpatched 2.2.21 kernel.

Thanks in advance,
Aaron

ksymoops 2.3.4 on i686 2.2.21-cpproxy-1.0.0.  Options used
     -V (specified)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.2.21-cpproxy-1.0.0/ (default)
     -m /boot/System.map-2.2.21-cpproxy-1.0.0 (specified)

Warning (compare_maps): ksyms_base symbol module_list_R__ver_module_list 
not found in System.map.  Ignoring ksyms_base entry
*pde = 00000000
Oops: 0000
CPU:    0
EIP:    0010:[<8012353c>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010082
eax: 0000003c   ebx: 81629080   ecx: 00000000   edx: f49bffbc
esi: f49bff80   edi: 00000283   ebp: 8167fd00   esp: 8162dcbc
ds: 0018   es: 0018   ss: 0018
Process swapper (pid: 0, process nr: 1, stackpage=8162d000)
Stack: 00000010 8167fd00 f49bffbc 00000010 8017492c f49bff80 0000000c 
80174bdf 
       f521fe20 8167fdb0 8167fd00 f592eb40 8167fdb0 f57a68e0 00000001 
7050e6d1 
       a88f47ca fb26c800 80160367 fb26c800 fadf58a0 f57a68e0 8016a535 
f57a68e0 
Call Trace: [<8017492c>] [<80174bdf>] [<80160367>] [<8016a535>] 
[<8016ad2e>] 
[<fc833000>] [<80164811>] 
       [<fc833000>] [<80164811>] [<80160367>] [<8016a535>] [<8016a843>] 
[<8017de11>] [<8017d2fe>] [<8017c4b2>] 
       [<80170883>] [<801754ab>] [<80175727>] [<80175787>] [<801681a6>] 
[<80168491>] [<80160701>] [<8011a46d>] 
       [<80109b6a>] [<80108b58>] [<8010631d>] [<80108b2d>] [<8011a46d>] 
[<80109b6a>] [<80108b58>] 
Code: 8b 69 08 81 fd 2b 2f c3 a5 0f 85 e5 00 00 00 8b 69 0c 85 ed 

>>EIP; 8012353c <kfree_s+94/1d8>   <=====
Trace; 8017492c <tcp_v4_or_free+20/24>
Trace; 80174bdf <tcp_v4_conn_request+2af/354>
Trace; 80160367 <dev_queue_xmit+3b/c8>
Trace; 8016a535 <ip_output+95/bc>
Trace; 8016ad2e <ip_build_xmit_slow+41e/478>
Trace; fc833000 <.data.end+347d/???
Trace; 80164811 <qdisc_restart+39/6c>
Trace; fc833000 <.data.end+347d/???
Trace; 80164811 <qdisc_restart+39/6c>
Trace; 80160367 <dev_queue_xmit+3b/c8>
Trace; 8016a535 <ip_output+95/bc>
Trace; 8016a843 <ip_queue_xmit+2e7/3b4>
Trace; 8017de11 <fn_hash_lookup+91/d4>
Trace; 8017d2fe <__fib_res_prefsrc+1a/20>
Trace; 8017c4b2 <fib_validate_source+9e/174>
Trace; 80170883 <tcp_rcv_state_process+63/860>
Trace; 801754ab <tcp_v4_do_rcv+14f/17c>
Trace; 80175727 <tcp_v4_rcv+24f/338>
Trace; 80175787 <tcp_v4_rcv+2af/338>
Trace; 801681a6 <ip_local_deliver+176/1c4>
Trace; 80168491 <ip_rcv+29d/2d0>
Trace; 80160701 <net_bh+199/1fc>
Trace; 8011a46d <do_bottom_half+81/a0>
Trace; 80109b6a <do_IRQ+52/5c>
Trace; 80108b58 <common_interrupt+18/20>
Trace; 8010631d <cpu_idle+3d/50>
Trace; 80108b2d <do_8259A_IRQ+c5/d8>
Trace; 8011a46d <do_bottom_half+81/a0>
Trace; 80109b6a <do_IRQ+52/5c>
Trace; 80108b58 <common_interrupt+18/20>
Code;  8012353c <kfree_s+94/1d8>
00000000 <_EIP>:
Code;  8012353c <kfree_s+94/1d8>   <=====
   0:   8b 69 08                  mov    0x8(%ecx),%ebp   <=====
Code;  8012353f <kfree_s+97/1d8>
   3:   81 fd 2b 2f c3 a5         cmp    $0xa5c32f2b,%ebp
Code;  80123545 <kfree_s+9d/1d8>
   9:   0f 85 e5 00 00 00         jne    f4 <_EIP+0xf4> 80123630 
<kfree_s+188/1d8>
Code;  8012354b <kfree_s+a3/1d8>
   f:   8b 69 0c                  mov    0xc(%ecx),%ebp
Code;  8012354e <kfree_s+a6/1d8>
  12:   85 ed                     test   %ebp,%ebp

Aiee, killing interrupt handler
Kernel panic: Attempted to kill the idle task!

1 warning issued.  Results may not be reliable.