ksymoops 2.4.1 on i686 2.4.5.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.5/ (default)
     -m /boot/System.map-2.4.5 (default)

Warning: You did not tell me where to find symbol information.  I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc.  ksymoops -h explains the options.

Warning (compare_maps): snd symbol pm_register not found in /usr/lib/alsa-modules/2.4.5/0.5/snd.o.  Ignoring /usr/lib/alsa-modules/2.4.5/0.5/snd.o entry
Warning (compare_maps): snd symbol pm_send not found in /usr/lib/alsa-modules/2.4.5/0.5/snd.o.  Ignoring /usr/lib/alsa-modules/2.4.5/0.5/snd.o entry
Warning (compare_maps): snd symbol pm_unregister not found in /usr/lib/alsa-modules/2.4.5/0.5/snd.o.  Ignoring /usr/lib/alsa-modules/2.4.5/0.5/snd.o entry
WARNING: USB Mass Storage data integrity not assured
kernel BUG at inode.c:486!
invalid operand: 0000
CPU:    0
EIP:    0010:[<c013f9bb>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286
eax: 0000001b   ebx: dd3df820   ecx: d9406000   edx: ddd3e560
esi: c022f280   edi: c022f280   ebp: 08054008   esp: d9407f04
ds: 0018   es: 0018   ss: 0018
Process umount (pid: 1551, stackpage=d9407000)
Stack: c01f79ac c01f7a0b 000001e6 dd3df820 c0140387 dd3df820 c326a7c0 dd3df820 
       c015399a dd3df820 c013df96 c326a7c0 dd3df820 de260c00 c326a7c0 c013227c 
       c326a7c0 c326a7c0 c3264e20 de260c00 c022e040 08054008 de260c34 c022f30c 
Call Trace: [<c0140387>] [<c015399a>] [<c013df96>] [<c013227c>] [<c01316d4>] [<c0136baf>] [<c01326a8>] 
       [<c01326e0>] [<c0106a7b>] [<c010002b>] 
Code: 0f 0b 83 c4 0c f6 83 f4 00 00 00 10 75 19 68 e8 01 00 00 68 

>>EIP; c013f9bb <clear_inode+33/f4>   <=====
Trace; c0140387 <iput+137/14c>
Trace; c015399a <nfs_dentry_iput+22/28>
Trace; c013df96 <dput+d6/144>
Trace; c013227c <kill_super+64/12c>
Trace; c01316d4 <__mntput+3c/44>
Trace; c0136baf <path_release+27/2c>
Trace; c01326a8 <sys_umount+c0/ec>
Trace; c01326e0 <sys_oldumount+c/10>
Trace; c0106a7b <system_call+33/38>
Trace; c010002b <startup_32+2b/a5>
Code;  c013f9bb <clear_inode+33/f4>
00000000 <_EIP>:
Code;  c013f9bb <clear_inode+33/f4>   <=====
   0:   0f 0b                     ud2a      <=====
Code;  c013f9bd <clear_inode+35/f4>
   2:   83 c4 0c                  add    $0xc,%esp
Code;  c013f9c0 <clear_inode+38/f4>
   5:   f6 83 f4 00 00 00 10      testb  $0x10,0xf4(%ebx)
Code;  c013f9c7 <clear_inode+3f/f4>
   c:   75 19                     jne    27 <_EIP+0x27> c013f9e2 <clear_inode+5a/f4>
Code;  c013f9c9 <clear_inode+41/f4>
   e:   68 e8 01 00 00            push   $0x1e8
Code;  c013f9ce <clear_inode+46/f4>
  13:   68 00 00 00 00            push   $0x0


4 warnings issued.  Results may not be reliable.