[   85.868123] BUG: unable to handle kernel NULL pointer dereference at virtual address 000000bf
[   85.868149] printing eip: c0133034 *pde = 00000000 
[   85.868171] Oops: 0002 [#1] 
[   85.868184] Modules linked in: netconsole i915 drm configfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_timer snd snd_page_alloc ipw2200 e1000
[   85.868282] 
[   85.868290] Pid: 4973, comm: ipcs Not tainted (2.6.24.3test-dirty #19)
[   85.868302] EIP: 0060:[<c0133034>] EFLAGS: 00010086 CPU: 0
[   85.868315] EIP is at __lock_acquire+0x319/0xc20
[   85.868323] EAX: 00000002 EBX: 00000246 ECX: def4e4d4 EDX: 00000002
[   85.868331] ESI: ffffffff EDI: 00000000 EBP: d8fcfe7c ESP: d8fcfe20
[   85.868339]  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
[   85.868347] Process ipcs (pid: 4973, ti=d8fce000 task=dd96d0d0 task.ti=d8fce000)
[   85.868354] Stack: c01338f4 d8fcfe88 c01338f4 d8fcfe4c 00000347 00000000 00000002 00000000 
[   85.868421]        00000000 def4e4d4 00000000 dd96d0d0 00000001 dd96d728 d8fcfebc c01338f4 
[   85.868491]        00000000 dd96d728 00000347 00000000 00000246 00000000 00000000 d8fcfea4 
[   85.868553] Call Trace:
[   85.868565]  [<c0103e9f>] show_trace_log_lvl+0x1a/0x2f
[   85.868582]  [<c0103f51>] show_stack_log_lvl+0x9d/0xa5
[   85.868606]  [<c0104006>] show_registers+0xad/0x17c
[   85.868620]  [<c01041cc>] die+0xf7/0x1c8
[   85.868633]  [<c0110e31>] do_page_fault+0x464/0x54b
[   85.868648]  [<c036259a>] error_code+0x6a/0x70
[   85.868667]  [<c01339b3>] lock_acquire+0x78/0x91
[   85.868680]  [<c0361f65>] _spin_lock+0x2e/0x58
[   85.868693]  [<c01dc5a6>] sys_shmctl+0x6f8/0x776
[   85.868713]  [<c0106d33>] sys_ipc+0x19f/0x1b5
[   85.868727]  [<c0102fa6>] syscall_call+0x7/0xb
[   85.868740]  =======================
[   85.868747] Code: 00 85 c0 0f 84 1d 09 00 00 83 3d 20 b4 78 c0 00 0f 85 10 09 00 00 c7 44 24 0c c8 ad 36 c0 c7 44 24 08 26 03 00 00 e9 8b 07 00 00 <ff> 86 c0 00 00 00 8b 45 d0 8b 80 54 06 00 00 83 f8 1d 89 45 cc 
[   85.869152] EIP: [<c0133034>] __lock_acquire+0x319/0xc20 SS:ESP 0068:d8fcfe20
[   85.869179] ---[ end trace 807f13dee3166302 ]---