oops in kernel 2.6.15-rc7

[Mathias Klein <ma_klein@gmx.de>]

Hello,

i recently got another oops. As suggested by Pekka Enberg I've enabled
CONFIG_DEBUG_SLAB and CONFIG_DEBUG_PAGEALLOC.

If you need more informations please let me know.

regards
Mathias

Dec 30 20:12:11 sidney kernel: [31895.552562] Unable to handle kernel NULL pointer dereference at virtual address 00000020
Dec 30 20:12:11 sidney kernel: [31895.552699]  printing eip:
Dec 30 20:12:11 sidney kernel: [31895.552914] c0136b90
Dec 30 20:12:11 sidney kernel: [31895.552933] *pde = 00000000
Dec 30 20:12:11 sidney kernel: [31895.553014] Oops: 0000 [#1]
Dec 30 20:12:11 sidney kernel: [31895.553065] PREEMPT 
Dec 30 20:12:11 sidney kernel: [31895.553147] Modules linked in: sd_mod usb_storage scsi_mod md5 ipv6 lp capi kernelcapi capifs nls_iso8859_15 nls_cp437 vfat fat parport_pc parport joydev evdev nvidiafb 8139too mii rivafb crc32 tuner tvaudio msp3400 bttv video_buf firmware_class snd_ens1370 gameport i2c_algo_bit snd_rawmidi snd_seq_device snd_bt87x v4l2_common btcx_risc tveeprom videodev snd_pcm snd_ak4531_codec snd_timer snd_page_alloc snd soundcore i2c_viapro i2c_core uhci_hcd usbcore ide_cd cdrom
Dec 30 20:12:11 sidney kernel: [31895.554927] CPU:    0
Dec 30 20:12:11 sidney kernel: [31895.554933] EIP:    0060:[mempool_free+4/104]    Not tainted VLI
Dec 30 20:12:11 sidney kernel: [31895.554942] EFLAGS: 00010282   (2.6.15-rc7.sidney.11) 
Dec 30 20:12:11 sidney kernel: [31895.555106] EIP is at mempool_free+0x4/0x68
Dec 30 20:12:11 sidney kernel: [31895.555168] eax: 00011200   ebx: 00000010   ecx: c11490c0   edx: c11490c0
Dec 30 20:12:11 sidney kernel: [31895.555236] esi: c132b7dc   edi: c132b7dc   ebp: c3e71c28   esp: c3e71bfc
Dec 30 20:12:11 sidney kernel: [31895.555301] ds: 007b   es: 007b   ss: 0068
Dec 30 20:12:11 sidney kernel: [31895.555361] Process pdflush (pid: 31177, threadinfo=c3e70000 task=c3469000)
Dec 30 20:12:11 sidney kernel: [31895.555413] Stack: c639ab64 c132b7dc 00011210 00000160 00000008 c3e71c24 c01b78c1 c1338c14 
Dec 30 20:12:11 sidney kernel: [31895.555773]        00000008 c1338c14 c3353460 c3e71c4c c01b996c c132b7dc 00000010 c1338c24 
Dec 30 20:12:11 sidney kernel: [31895.556130]        00000001 00000008 c1338c14 c1338c14 c3e71c88 c01b9aad c1338c14 00000001 
Dec 30 20:12:11 sidney kernel: [31895.556488] Call Trace:
Dec 30 20:12:11 sidney kernel: [31895.556582]  [show_stack+120/131] show_stack+0x78/0x83
Dec 30 20:12:11 sidney kernel: [31895.556712]  [show_registers+306/415] show_registers+0x132/0x19f
Dec 30 20:12:11 sidney kernel: [31895.556840]  [die+201/318] die+0xc9/0x13e
Dec 30 20:12:11 sidney kernel: [31895.556964]  [do_page_fault+924/1239] do_page_fault+0x39c/0x4d7
Dec 30 20:12:11 sidney kernel: [31895.557095]  [error_code+79/96] error_code+0x4f/0x60
Dec 30 20:12:11 sidney kernel: [31895.557219]  [get_request+330/625] get_request+0x14a/0x271
Dec 30 20:12:11 sidney kernel: [31895.557353]  [get_request_wait+26/205] get_request_wait+0x1a/0xcd
Dec 30 20:12:11 sidney kernel: [31895.557480]  [__make_request+643/998] __make_request+0x283/0x3e6
Dec 30 20:12:11 sidney kernel: [31895.557608]  [generic_make_request+244/262] generic_make_request+0xf4/0x106
Dec 30 20:12:11 sidney kernel: [31895.557736]  [submit_bio+169/178] submit_bio+0xa9/0xb2
Dec 30 20:12:11 sidney kernel: [31895.557863]  [submit_bh+192/226] submit_bh+0xc0/0xe2
Dec 30 20:12:11 sidney kernel: [31895.557998]  [__block_write_full_page+425/671] __block_write_full_page+0x1a9/0x29f
Dec 30 20:12:11 sidney kernel: [31895.558130]  [block_write_full_page+198/209] block_write_full_page+0xc6/0xd1
Dec 30 20:12:11 sidney kernel: [31895.558259]  [blkdev_writepage+19/21] blkdev_writepage+0x13/0x15
Dec 30 20:12:11 sidney kernel: [31895.558387]  [mpage_writepages+390/737] mpage_writepages+0x186/0x2e1
Dec 30 20:12:11 sidney kernel: [31895.558521]  [generic_writepages+16/18] generic_writepages+0x10/0x12
Dec 30 20:12:11 sidney kernel: [31895.558649]  [do_writepages+33/51] do_writepages+0x21/0x33
Dec 30 20:12:11 sidney kernel: [31895.558779]  [__sync_single_inode+97/441] __sync_single_inode+0x61/0x1b9
Dec 30 20:12:11 sidney kernel: [31895.558906]  [__writeback_single_inode+292/302] __writeback_single_inode+0x124/0x12e
Dec 30 20:12:11 sidney kernel: [31895.559037]  [sync_sb_inodes+423/626] sync_sb_inodes+0x1a7/0x272
Dec 30 20:12:11 sidney kernel: [31895.559163]  [writeback_inodes+134/224] writeback_inodes+0x86/0xe0
Dec 30 20:12:11 sidney kernel: [31895.559291]  [wb_kupdate+121/218] wb_kupdate+0x79/0xda
Dec 30 20:12:11 sidney kernel: [31895.559415]  [__pdflush+218/396] __pdflush+0xda/0x18c
Dec 30 20:12:11 sidney kernel: [31895.559540]  [pdflush+31/33] pdflush+0x1f/0x21
Dec 30 20:12:11 sidney kernel: [31895.559665]  [kthread+110/156] kthread+0x6e/0x9c
Dec 30 20:12:11 sidney kernel: [31895.559797]  [kernel_thread_helper+5/11] kernel_thread_helper+0x5/0xb
Dec 30 20:12:11 sidney kernel: [31895.559922] Code: 7e 14 00 75 05 e8 46 d2 16 00 89 d8 89 fa e8 8b 32 ff ff 8b 45 dc e9 6f ff ff ff 31 db 8d 65 f4 89 d8 5b 5e 5f c9 c3 55 89 e5 57 <56> 8b 7d 08 53 8b 5d 0c 8b 43 10 39 43 14 7d 43 89 d8 e8 89 da

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