Public bug reported:

Binary package hint: linux-image-2.6.22-10-generic

Oops when loading bluetooth. If i do "sudo invoke-rc.d bluetooth stop"
the console hangs. Bluetooth doesn't work. The system itself is up and
working, however.

dmesg output:
--------------------------------------------8<------------------------
[   89.123630] AppArmor: Registered secondary security module: capability.
[   89.123638] Capability LSM initialized as secondary
[   89.369843] Bluetooth: Core ver 2.11
[   89.369887] BUG: unable to handle kernel paging request at virtual address 
f8e47084
[   89.369893]  printing eip:
[   89.369895] c01f9bf6
[   89.369897] *pde = 37f61067
[   89.369901] *pte = 00000000
[   89.369905] Oops: 0000 [#1]
[   89.369969] SMP
[   89.370096] Modules linked in: bluetooth capability lirc_dev ppdev ipv6 
video sbs button dock container ac battery speedstep_lib cpufreq_userspace 
cpufreq_stats cpufreq_powersave cpufreq_ondemand freq_table 
cpufreq_conservative dm_crypt fuse eeprom lm85 hwmon_vid i2c_isa i2c_i801 sbp2 
lp snd_emu10k1_synth snd_emux_synth snd_seq_virmidi snd_seq_midi_emul 
snd_emu10k1 snd_ac97_codec ac97_bus bt878 snd_pcm_oss snd_mixer_oss snd_pcm 
snd_page_alloc snd_util_mem snd_hwdep tuner snd_seq_dummy snd_seq_oss 
snd_seq_midi tvaudio snd_rawmidi bttv video_buf ir_common snd_seq_midi_event 
usbhid hid compat_ioctl32 i2c_algo_bit btcx_risc usblp tveeprom i2c_core 
snd_seq bcm43xx snd_timer snd_seq_device videodev v4l2_common v4l1_compat 
ieee80211softmac ieee80211 ieee80211_crypt parport_pc parport snd soundcore 
emu10k1_gp gameport psmouse pcspkr serio_raw intel_agp iTCO_wdt 
iTCO_vendor_support agpgart shpchp pci_hotplug evdev usb_storage ide_core ext3 
jbd mbcache libusual sg sr_mod cdrom sd_mod ata_piix floppy e100 mii ohci1394 
ieee1394 ehci_hcd ata_generic libata scsi_mod uhci_hcd usbcore raid10 raid456 
xor raid1 raid0 multipath linear md_mod dm_mirror dm_snapshot dm_mod thermal 
processor fan apparmor commoncap aamatch_pcre
[   89.375168] CPU:    0
[   89.375169] EIP:    0060:[<c01f9bf6>]    Not tainted VLI
[   89.375170] EFLAGS: 00010282   (2.6.22-10-generic #1)
[   89.375321] EIP is at kref_get+0x6/0x40
[   89.375371] eax: f8e47084   ebx: f8e47084   ecx: 00000013   edx: 00000000
[   89.375424] esi: f8e4707c   edi: f8af8a38   ebp: f8e47078   esp: f7187db0
[   89.375477] ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
[   89.375530] Process modprobe (pid: 10675, ti=f7186000 task=f7722f60 
task.ti=f7186000)
[   89.375584] Stack: f74c68a0 ffffffed f8af89dc f7187de4 f7187de4 c02f02e3 
00000000 004c68a0
[   89.375963]        00000000 f77e2af4 f77e2a08 c03c1860 c025f10d c03c1978 
c03c197c f8af8a38
[   89.376341]        f77e2a08 f77e2af4 f77e2aca ffffffea c0260016 c025ff50 
f77e2a08 c03c1860
[   89.376720] Call Trace:
[   89.376842]  [<c02f02e3>] klist_next+0x53/0xa0
[   89.376956]  [<c025f10d>] bus_for_each_drv+0x4d/0x70
[   89.377074]  [<c0260016>] device_attach+0x86/0x90
[   89.377160]  [<c025ff50>] __device_attach+0x0/0x10
[   89.377255]  [<c025f06d>] bus_attach_device+0x4d/0xa0
[   89.377343]  [<c025f4b9>] bus_add_device+0x129/0x160
[   89.377455]  [<c025dd3f>] device_add+0x49f/0x570
[   89.377606]  [<c0261ad7>] platform_device_add+0xf7/0x150
[   89.377693]  [<c01f924f>] kobject_init+0x2f/0x50
[   89.377784]  [<c025d3e3>] device_initialize+0x63/0x90
[   89.377875]  [<c0261c97>] platform_device_alloc+0x57/0x80
[   89.377979]  [<c0261d43>] platform_device_register_simple+0x33/0x80
[   89.378085]  [<f8d4a0fc>] bt_sysfs_init+0x1c/0x8d [bluetooth]
[   89.378186]  [<f8d4a01d>] bt_init+0x1d/0x60 [bluetooth]
[   89.378290]  [<c014a721>] sys_init_module+0x151/0x1a00
[   89.378387]  [<c01f9f7f>] prio_tree_insert+0x1f/0x250
[   89.378711]  [<c01041d2>] sysenter_past_esp+0x6b/0xa9
[   89.378832]  [<c013007b>] sys_capset+0x21b/0x2e0
[   89.378958]  =======================
[   89.379007] Code: 24 04 20 0e 38 c0 c7 04 24 fe 2b 37 c0 e8 23 f0 f2 ff e8 
ee c8 f0 ff eb 87 8d b6 00 00 00 00 8d bf 00 00 00 00 53 89 c3 83 ec 10 <8b> 00 
85 c0 74 08 f0 ff 03 83 c4 10 5b c3 c7 44 24 0c 69 37 30
[   89.381368] EIP: [<c01f9bf6>] kref_get+0x6/0x40 SS:ESP 0068:f7187db0
[   93.400275] NET: Registered protocol family 17
[  106.841081] eth0: no IPv6 routers present
[  692.064380] nvidia: module license 'NVIDIA' taints kernel.
[  692.316761] ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> 
IRQ 16
[  692.317444] NVRM: loading NVIDIA UNIX x86 Kernel Module  100.14.11  Wed Jun 
13 18:21:22 PDT 2007
[  701.393061] agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0.
[  701.393079] agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode
[  701.393110] agpgart: Putting AGP V3 device at 0000:01:00.0 into 8x mode
[  735.997405] bttv0: PLL can sleep, using XTAL (28636363).
[  742.483625] WARNING: at 
/build/buildd/linux-source-2.6.22-2.6.22/lib/kref.c:33 kref_get()
[  742.483669]  [<c01f9c2d>] kref_get+0x3d/0x40
[  742.483706]  [<c01f8ddf>] kobject_get+0xf/0x20
[  742.483718]  [<c01c4be2>] sysfs_follow_link+0x232/0x260
[  742.483780]  [<c018a124>] __link_path_walk+0xc84/0xe70
[  742.483828]  [<c018a375>] link_path_walk+0x65/0xc0
[  742.483917]  [<c018a355>] link_path_walk+0x45/0xc0
[  742.483991]  [<c01c43c0>] sysfs_readdir+0xc0/0x1e0
[  742.484046]  [<c018a5a3>] do_path_lookup+0x73/0x1b0
[  742.484063]  [<c0189157>] getname+0xa7/0xd0
[  742.484088]  [<c018afab>] __user_walk_fd+0x3b/0x60
[  742.484119]  [<c01839d2>] vfs_stat_fd+0x22/0x60
[  742.484194]  [<c01c43c0>] sysfs_readdir+0xc0/0x1e0
[  742.484244]  [<c0183aaf>] sys_stat64+0xf/0x30
[  742.484274]  [<c0147517>] sys_futex+0x97/0x100
[  742.484305]  [<c017e8f7>] filp_close+0x47/0x80
[  742.484352]  [<c01041d2>] sysenter_past_esp+0x6b/0xa9
[  742.484444]  =======================
[  742.484457] BUG: unable to handle kernel NULL pointer dereference at virtual 
address 00000000
[  742.484463]  printing eip:
[  742.484467] c01c4add
[  742.484469] *pde = 00000000
[  742.484474] Oops: 0000 [#2]
[  742.484477] SMP
[  742.484481] Modules linked in: nvidia(P) af_packet bluetooth capability 
lirc_dev ppdev ipv6 video sbs button dock container ac battery speedstep_lib 
cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_ondemand freq_table 
cpufreq_conservative dm_crypt fuse eeprom lm85 hwmon_vid i2c_isa i2c_i801 sbp2 
lp snd_emu10k1_synth snd_emux_synth snd_seq_virmidi snd_seq_midi_emul 
snd_emu10k1 snd_ac97_codec ac97_bus bt878 snd_pcm_oss snd_mixer_oss snd_pcm 
snd_page_alloc snd_util_mem snd_hwdep tuner snd_seq_dummy snd_seq_oss 
snd_seq_midi tvaudio snd_rawmidi bttv video_buf ir_common snd_seq_midi_event 
usbhid hid compat_ioctl32 i2c_algo_bit btcx_risc usblp tveeprom i2c_core 
snd_seq bcm43xx snd_timer snd_seq_device videodev v4l2_common v4l1_compat 
ieee80211softmac ieee80211 ieee80211_crypt parport_pc parport snd soundcore 
emu10k1_gp gameport psmouse pcspkr serio_raw intel_agp iTCO_wdt 
iTCO_vendor_support agpgart shpchp pci_hotplug evdev usb_storage ide_core ext3 
jbd mbcache libusual sg sr_mod cdrom sd_mod ata_piix floppy e100 mii ohci1394 
ieee1394 ehci_hcd ata_generic libata scsi_mod uhci_hcd usbcore raid10 raid456 
xor raid1 raid0 multipath linear md_mod dm_mirror dm_snapshot dm_mod thermal 
processor fan apparmor commoncap aamatch_pcre
[  742.484738] CPU:    1
[  742.484739] EIP:    0060:[<c01c4add>]    Tainted: P       VLI
[  742.484743] EFLAGS: 00210246   (2.6.22-10-generic #1)
[  742.484749] EIP is at sysfs_follow_link+0x12d/0x260
[  742.484755] eax: 00000000   ebx: 00000001   ecx: ffffffff   edx: ffffffff
[  742.484785] esi: 00000000   edi: 00000000   ebp: 00000003   esp: f4499dd8
[  742.484791] ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
[  742.484797] Process restricted-mana (pid: 26464, ti=f4498000 task=f44419a0 
task.ti=f4498000)
[  742.484802] Stack: f8e47024 f4499f04 f41ca000 ffffffea f7564280 f8e47024 
f41c86e8 f41c93f0
[  742.484817]        00000000 bccb37e1 f41c86e8 c018a124 0000000d f4daa016 
f4499f04 f4daa024
[  742.484831]        00000001 00000000 dfeb4100 dfc3e5d8 c018a375 f4daa000 
dfc3e5d8 00000000
[  742.484845] Call Trace:
[  742.484926]  [<c018a124>] __link_path_walk+0xc84/0xe70
[  742.484973]  [<c018a375>] link_path_walk+0x65/0xc0
[  742.485037]  [<c018a355>] link_path_walk+0x45/0xc0
[  742.485111]  [<c01c43c0>] sysfs_readdir+0xc0/0x1e0
[  742.485165]  [<c018a5a3>] do_path_lookup+0x73/0x1b0
[  742.485182]  [<c0189157>] getname+0xa7/0xd0
[  742.485207]  [<c018afab>] __user_walk_fd+0x3b/0x60
[  742.485237]  [<c01839d2>] vfs_stat_fd+0x22/0x60
[  742.485312]  [<c01c43c0>] sysfs_readdir+0xc0/0x1e0
[  742.485362]  [<c0183aaf>] sys_stat64+0xf/0x30
[  742.485392]  [<c0147517>] sys_futex+0x97/0x100
[  742.485422]  [<c017e8f7>] filp_close+0x47/0x80
[  742.485467]  [<c01041d2>] sysenter_past_esp+0x6b/0xa9
[  742.485559]  =======================
[  742.485563] Code: ff 8b 44 24 10 8b 40 24 83 c5 01 85 c0 75 f6 8b 44 24 14 
bb 01 00 00 00 31 f6 ba ff ff ff ff 89 04 24 8b 0c 24 89 f0 8b 39 89 d1 <f2> ae 
f7 d1 49 8d 5c 19 01 8b 0c 24 8b 49 24 85 c9 89 0c 24 75
[  742.485678] EIP: [<c01c4add>] sysfs_follow_link+0x12d/0x260 SS:ESP 
0068:f4499dd8
--------------------------------------------8<------------------------

** Affects: linux-source-2.6.22 (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Bluetooth Oops
https://bugs.launchpad.net/bugs/134173
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