Public bug reported:
I have a Dell mini 9 with a usb bluetooth adapter and a bluetooth
headset. For the last while (possibly since the 3.8 kernel has been in
raring) I can pair the headset, but within a minute bluetooth stops
working and a black screen with white text flashes up briefly. Hereafter
the sound indicator --> sound settings no longer shows any audio
devices. /var/log/kern.log for this session is attached. Please let me
know if you need any additional info.
Feb 3 19:15:36 fourish kernel: [23400.481233] BUG: unable to handle kernel
NULL pointer dereference at 00000280
Feb 3 19:15:36 fourish kernel: [23400.481454] IP: [<f8646774>]
hci_send_sco+0x14/0x80 [bluetooth]
Feb 3 19:15:36 fourish kernel: [23400.481646] *pdpt = 00000000217fc001 *pde =
0000000000000000
Feb 3 19:15:36 fourish kernel: [23400.481821] Oops: 0000 [#1] SMP
Feb 3 19:15:36 fourish kernel: [23400.481933] Modules linked in: btusb ath3k
coretemp joydev(F) hid_logitech ff_memless arc4(F) b43 snd_hda_codec_realtek
bcma mac80211 dell_laptop compal_laptop dcdbas snd_hda_intel i915 cfg80211
snd_hda_codec snd_hwdep(F) microcode(F) snd_pcm(F) uvcvideo snd_page_alloc(F)
videobuf2_vmalloc videobuf2_memops videobuf2_core snd_seq_midi(F)
snd_seq_midi_event(F) drm_kms_helper videodev jmb38x_ms snd_rawmidi(F) usbhid
hid drm lpc_ich psmouse(F) serio_raw(F) snd_seq(F) i2c_algo_bit memstick
snd_seq_device(F) snd_timer(F) snd(F) soundcore(F) rfcomm bnep bluetooth
parport_pc(F) ppdev(F) video(F) mac_hid binfmt_misc(F) lp(F) parport(F) r8169
ssb sdhci_pci sdhci
Feb 3 19:15:36 fourish kernel: [23400.484012] Pid: 5066, comm: bluetooth
Tainted: GF 3.8.0-4-generic #8-Ubuntu Dell Inc. Inspiron 910/
Feb 3 19:15:36 fourish kernel: [23400.484025] EIP: 0060:[<f8646774>] EFLAGS:
00010286 CPU: 0
Feb 3 19:15:36 fourish kernel: [23400.484025] EIP is at hci_send_sco+0x14/0x80
[bluetooth]
Feb 3 19:15:36 fourish kernel: [23400.484025] EAX: 00000000 EBX: f6abca00 ECX:
e14183e0 EDX: f3f5e500
Feb 3 19:15:36 fourish kernel: [23400.484025] ESI: 00000030 EDI: f3f3fe98 EBP:
f3f3fd88 ESP: f3f3fd74
Feb 3 19:15:36 fourish kernel: [23400.484025] DS: 007b ES: 007b FS: 00d8 GS:
00e0 SS: 0068
Feb 3 19:15:36 fourish kernel: [23400.484025] CR0: 80050033 CR2: 00000280 CR3:
1edcc000 CR4: 000007e0
Feb 3 19:15:36 fourish kernel: [23400.484025] DR0: 00000000 DR1: 00000000 DR2:
00000000 DR3: 00000000
Feb 3 19:15:36 fourish kernel: [23400.484025] DR6: ffff0ff0 DR7: 00000400
Feb 3 19:15:36 fourish kernel: [23400.484025] Process bluetooth (pid: 5066,
ti=f3f3e000 task=c1c08cd0 task.ti=f3f3e000)
Feb 3 19:15:36 fourish kernel: [23400.484025] Stack:
Feb 3 19:15:36 fourish kernel: [23400.484025] c152560f f3f5e438 f6abca00
00000030 f3f3fe98 f3f3fdac f86646aa f3f3fd9c
Feb 3 19:15:36 fourish kernel: [23400.484025] e14183e0 f3f5e500 00000000
e86fd980 00000030 f8668d00 f3f3fe84 c151abbc
Feb 3 19:15:36 fourish kernel: [23400.484025] 00000030 f3f3fea0 f3f3fe00
f3f3fe18 c108446b f73f3710 00000030 e86fd980
Feb 3 19:15:36 fourish kernel: [23400.484025] Call Trace:
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c152560f>] ?
memcpy_fromiovec+0x3f/0x70
Feb 3 19:15:36 fourish kernel: [23400.484025] [<f86646aa>]
sco_sock_sendmsg+0xfa/0x180 [bluetooth]
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c151abbc>]
sock_sendmsg+0x9c/0xd0
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c108446b>] ?
enqueue_entity+0x4db/0xd40
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c151bc8d>]
sys_sendto+0xfd/0x140
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c107c56f>] ?
wake_up_state+0xf/0x20
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c10a3945>] ?
wake_futex+0x65/0x80
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c10a3a4e>] ?
futex_wake+0xee/0x110
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c10a5bbb>] ?
do_futex+0xeb/0x550
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c151bd0b>] sys_send+0x3b/0x40
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c151c655>]
sys_socketcall+0x185/0x2d0
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c12f2091>] ?
copy_to_user+0x41/0x60
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c106af28>] ?
sys_clock_gettime+0x48/0x70
Feb 3 19:15:36 fourish kernel: [23400.484025] [<c161758d>]
sysenter_do_call+0x12/0x28
Feb 3 19:15:36 fourish kernel: [23400.484025] Code: ff e9 19 ff ff ff 90 89 fa
89 f0 e8 77 bc ed c8 eb 9a 90 8d 74 26 00 55 89 e5 83 ec 14 89 5d f4 89 75 f8
89 7d fc 3e 8d 74 26 00 <8b> b0 80 02 00 00 0f b7 48 14 89 c7 8b 42 50 89 d3 ba
03 00 00
Feb 3 19:15:36 fourish kernel: [23400.484025] EIP: [<f8646774>]
hci_send_sco+0x14/0x80 [bluetooth] SS:ESP 0068:f3f3fd74
Feb 3 19:15:36 fourish kernel: [23400.484025] CR2: 0000000000000280
Feb 3 19:15:36 fourish kernel: [23400.543629] ---[ end trace f521fe079a905b72
]---
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "bt_kernel.log"
https://bugs.launchpad.net/bugs/1114516/+attachment/3513490/+files/bt_kernel.log
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1114516
Title:
bluetooth headset stops working
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1114516/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
