I'm having this bug now as well since a couple of weeks. Had it just resulting
in a kernel panic a view minutes ago on my fully updated 12.04 running
3.2.0-25-generic. Moreover I've seen it before in 3.2.0-24-generic.
Below the end of kern.log at the latest panic on 3.2.0-25:
Jun 23 11:51:38 gron kernel: [376644.536088] ------------[ cut here
]------------
Jun 23 11:51:38 gron kernel: [376644.536105] WARNING: at
/build/buildd/linux-3.2.0/fs/sysfs/dir.c:481 sysfs_add_one+0xc0/0xf0()
Jun 23 11:51:38 gron kernel: [376644.536111] Hardware name: 12942NG
Jun 23 11:51:38 gron kernel: [376644.536114] sysfs: cannot create duplicate
filename '/class/bluetooth/hci0:11'
Jun 23 11:51:38 gron kernel: [376644.536119] Modules linked in: vboxpci(O)
vboxnetadp(O) vboxnetflt(O) vboxdrv(O) usbhid pci_stub lrw gf128mul hid_apple
hidp hid xt_tcpudp iptable_filter ip_tables x_tables rfcomm bnep nfsd nfs lockd
binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt snd_hda_codec_hdmi
snd_hda_codec_conexant arc4 joydev uvcvideo videodev v4l2_compat_ioctl32
cdc_ncm usbnet cdc_wdm cdc_acm btusb bluetooth psmouse serio_raw iwlwifi
snd_hda_intel snd_hda_codec snd_hwdep snd_pcm mac80211 cfg80211 mei(C)
snd_page_alloc tpm_tis mac_hid thinkpad_acpi snd_seq_midi snd_rawmidi
snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore nvram
hdaps(O) tp_smapi(O) thinkpad_ec(O) lp parport wmi i915 drm_kms_helper drm
i2c_algo_bit video e1000e sdhci_pci sdhci [last unloaded: vboxdrv]
Jun 23 11:51:38 gron kernel: [376644.536250] Pid: 2841, comm: kworker/u:3
Tainted: G WC O 3.2.0-25-generic #40-Ubuntu
Jun 23 11:51:38 gron kernel: [376644.536255] Call Trace:
Jun 23 11:51:38 gron kernel: [376644.536269] [<ffffffff810672af>]
warn_slowpath_common+0x7f/0xc0
Jun 23 11:51:38 gron kernel: [376644.536277] [<ffffffff810673a6>]
warn_slowpath_fmt+0x46/0x50
Jun 23 11:51:38 gron kernel: [376644.536286] [<ffffffff811edbd0>]
sysfs_add_one+0xc0/0xf0
Jun 23 11:51:38 gron kernel: [376644.536295] [<ffffffff811ee555>]
sysfs_do_create_link+0x125/0x210
Jun 23 11:51:38 gron kernel: [376644.536304] [<ffffffff811ee653>]
sysfs_create_link+0x13/0x20
Jun 23 11:51:38 gron kernel: [376644.536316] [<ffffffff813f1249>]
device_add_class_symlinks+0x89/0xe0
Jun 23 11:51:38 gron kernel: [376644.536325] [<ffffffff811ecc16>] ?
sysfs_create_file+0x26/0x30
Jun 23 11:51:38 gron kernel: [376644.536334] [<ffffffff813f2b68>]
device_add+0x228/0x3e0
Jun 23 11:51:38 gron kernel: [376644.536343] [<ffffffff813f291b>] ?
device_private_init+0x5b/0x80
Jun 23 11:51:38 gron kernel: [376644.536365] [<ffffffffa0355a30>] ?
__match_tty+0x40/0x40 [bluetooth]
Jun 23 11:51:38 gron kernel: [376644.536382] [<ffffffffa0355a93>]
add_conn+0x63/0x120 [bluetooth]
Jun 23 11:51:38 gron kernel: [376644.536397] [<ffffffffa0355a30>] ?
__match_tty+0x40/0x40 [bluetooth]
Jun 23 11:51:38 gron kernel: [376644.536408] [<ffffffff81084f9a>]
process_one_work+0x11a/0x480
Let me know if I should provide more info!
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/976288
Title:
Bluetooth adapter fails to work after resume
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