Comment 0 for bug 374262

WARNING: at /build/buildd/linux-2.6.30/kernel/workqueue.c:371 flush_cpu_workqueue+0x91/0xa0()
[ 94.961892] Hardware name: VGN-FW31ZJ
[ 94.961895] Modules linked in: cryptd aes_x86_64 aes_generic nfsd lockd nfs_acl auth_rpcgss sunrpc radeon drm ppdev bridge stp bnep binfmt_misc xfs exportfs sbp2 lp parport dm_crypt snd_hda_codec_atihdmi arc4 ecb snd_hda_codec_realtek joydev iwlagn iwlcore snd_pcm_oss snd_mixer_oss snd_hda_intel snd_hda_codec snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device mac80211 snd soundcore uvcvideo snd_page_alloc psmouse sdhci_pci sdhci iTCO_wdt cfg80211 video intel_agp pcspkr videodev v4l1_compat v4l2_compat_ioctl32 serio_raw led_class iTCO_vendor_support btusb sony_laptop output ohci1394 ieee1394 sky2 fbcon tileblit font bitblit softcursor
[ 94.962008] Pid: 256, comm: bluetooth Not tainted 2.6.30-4-generic #5-Ubuntu
[ 94.962013] Call Trace:
[ 94.962024] [<ffffffff80250813>] warn_slowpath+0xc3/0x120
[ 94.962036] [<ffffffff80431fc8>] ? vsnprintf+0x428/0x590
[ 94.962045] [<ffffffff802461eb>] ? dequeue_entity+0x1b/0x250
[ 94.962053] [<ffffffff80264321>] flush_cpu_workqueue+0x91/0xa0
[ 94.962062] [<ffffffff80264d7c>] flush_workqueue+0x4c/0x80
[ 94.962071] [<ffffffff806a04c0>] ? add_conn+0x0/0x50
[ 94.962078] [<ffffffff806a04d8>] add_conn+0x18/0x50
[ 94.962086] [<ffffffff80263e55>] run_workqueue+0x95/0x180
[ 94.962093] [<ffffffff80263fe4>] worker_thread+0xa4/0x130
[ 94.962103] [<ffffffff802689e0>] ? autoremove_wake_function+0x0/0x40
[ 94.962111] [<ffffffff80263f40>] ? worker_thread+0x0/0x130
[ 94.962119] [<ffffffff80268585>] kthread+0x55/0xa0
[ 94.962129] [<ffffffff802130ca>] child_rip+0xa/0x20
[ 94.962137] [<ffffffff80268530>] ? kthread+0x0/0xa0
[ 94.962145] [<ffffffff802130c0>] ? child_rip+0x0/0x20
[ 94.962151] ---[ end trace 370e17d4af25b10e ]---
[ 95.190933] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 95.193116] BUG: unable to handle kernel NULL pointer dereference at 0000000000000038
[ 95.193128] IP: [<ffffffff80358f44>] sysfs_addrm_start+0x34/0xc0