[d-kernel] ÓÌÏ×ÉÌ oops

[Andrey Khavryuchenko <akhavr@kds.com.ua>]

Hi!

Ниже выдача ksymoops.  Какую полезную информацию я могу извлечь?
Background: опакечиваю user-space поддержку Zyxel Prestige 630 EE (630-11)
Запускаемая ручками инициализация/прибитие работает без проблем.  При
попытке запустить то же из hotplug поймал oops:

akhavr@netmaster /tmp/amedyn/scripts $ sudo /usr/sbin/ksymoops < /var/log/messages
ksymoops 2.4.9 on i686 2.4.25-std-up-alt1.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.25-std-up-alt1/ (default)
     -m /boot/System.map-2.4.25-std-up-alt1 (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_ksyms_lsmod): module ext3 is in lsmod but not in ksyms, probably no symbols exported
Mar 29 15:30:37 netmaster kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000178
Mar 29 15:30:37 netmaster kernel: dff43862
Mar 29 15:30:37 netmaster kernel: *pde = 07992067
Mar 29 15:30:37 netmaster kernel: Oops: 0000
Mar 29 15:30:37 netmaster kernel: CPU:    0
Mar 29 15:30:38 netmaster kernel: EIP:    0010:[<dff43862>]    Tainted: P 
Using defaults from ksymoops -t elf32-i386 -a i386
Mar 29 15:30:38 netmaster kernel: EFLAGS: 00010286
Mar 29 15:30:38 netmaster kernel: eax: 00000000   ebx: cb261f40   ecx: c8025f00   edx: 00000282
Mar 29 15:30:38 netmaster kernel: esi: d72c9106   edi: 00000054   ebp: 0000000e   esp: cb261efc
Mar 29 15:30:38 netmaster kernel: ds: 0018   es: 0018   ss: 0018
Mar 29 15:30:38 netmaster kernel: Process br2684ctl (pid: 31994, stackpage=cb261000)
Mar 29 15:30:38 netmaster kernel: Stack: c3da1e00 08040002 00000002 3073616e 00000000 00000000 00000000 00000000 
Mar 29 15:30:38 netmaster kernel:        00000000 00000000 00000001 00000000 00000000 00000000 00000000 00000000 
Mar 29 15:30:38 netmaster kernel:        00000108 dcf89ca0 c80259c0 0000000e dff43b44 dff234d4 400261f2 bffff530 
Mar 29 15:30:38 netmaster kernel: Call Trace:    [<dff43b44>] [<dff234d4>] [<dff1ec6a>] [sock_ioctl+30/48] [sys_ioctl+583/608]
Mar 29 15:30:38 netmaster kernel: Call Trace:    [<dff43b44>] [<dff234d4>] [<dff1ec6a>] [<c01e106e>] [<c0146a07>]
Mar 29 15:30:38 netmaster kernel:   [<c0108823>]
Mar 29 15:30:38 netmaster kernel: Code: 8b 90 78 01 00 00 29 fa 89 90 78 01 00 00 8b 41 18 8b b0 70 


>>EIP; dff43862 <[br2684]br2684_regvcc+282/2d0>   <=====

>>ebx; cb261f40 <_end+af4a5b0/1f81a6d0>
>>ecx; c8025f00 <_end+7d0e570/1f81a6d0>
>>esi; d72c9106 <_end+16fb1776/1f81a6d0>
>>esp; cb261efc <_end+af4a56c/1f81a6d0>

Trace; dff43b44 <[br2684]br2684_ioctl+44/d0>
Trace; dff234d4 <[atm]br2684_ioctl_mutex+0/10>
Trace; dff1ec6a <[atm]vcc_ioctl+9ea/a20>
Trace; dff43b44 <[br2684]br2684_ioctl+44/d0>
Trace; dff234d4 <[atm]br2684_ioctl_mutex+0/10>
Trace; dff1ec6a <[atm]vcc_ioctl+9ea/a20>
Trace; c01e106e <sock_ioctl+1e/30>
Trace; c0146a07 <sys_ioctl+247/260>
Trace; c0108823 <system_call+33/40>

Code;  dff43862 <[br2684]br2684_regvcc+282/2d0>
00000000 <_EIP>:
Code;  dff43862 <[br2684]br2684_regvcc+282/2d0>   <=====
   0:   8b 90 78 01 00 00         mov    0x178(%eax),%edx   <=====
Code;  dff43868 <[br2684]br2684_regvcc+288/2d0>
   6:   29 fa                     sub    %edi,%edx
Code;  dff4386a <[br2684]br2684_regvcc+28a/2d0>
   8:   89 90 78 01 00 00         mov    %edx,0x178(%eax)
Code;  dff43870 <[br2684]br2684_regvcc+290/2d0>
   e:   8b 41 18                  mov    0x18(%ecx),%eax
Code;  dff43873 <[br2684]br2684_regvcc+293/2d0>
  11:   8b b0 70 00 00 00         mov    0x70(%eax),%esi


2 warnings issued.  Results may not be reliable.

-- 
Andrey V Khavryuchenko            http://www.kds.com.ua/
Silver Bullet Software Solutions  http://www.kds.com.ua/training/