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[Chris Halse Rogers <chris@xxxxxxxxxxxxxx>]

I've tried Andy's kernels from  http://people.canonical.com/~apw
/unstable-trusty/, but I can't tell whether this is fixed in 3.13 or not
- bluetooth entirely fails to work in 3.13.

bluetoothd repeatedly spawns and crashes, with:
[   31.268389] general protection fault: 0000 [#2] SMP 
[   31.268418] Modules linked in: rfcomm bnep binfmt_misc joydev x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm nls_iso8859_1 microcode arc4 psmouse serio_raw ath9k snd_hda_codec_via snd_seq_midi ath9k_common snd_seq_midi_event ath9k_hw snd_rawmidi ath snd_hda_codec_hdmi uvcvideo mac80211 videobuf2_vmalloc snd_hda_intel videobuf2_memops videobuf2_core snd_hda_codec snd_seq videodev snd_hwdep snd_seq_device ath3k cfg80211 snd_pcm lpc_ich btusb bluetooth rtsx_pci_ms snd_page_alloc memstick snd_timer snd mei_me mei soundcore mac_hid lp parport dm_crypt usb_storage rtsx_pci_sdmmc crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 i915 lrw gf128mul glue_helper ablk_helper cryptd i2c_algo_bit e1000e drm_kms_helper ahci libahci drm rtsx_pci ptp pps_core wmi video
[   31.269003] CPU: 0 PID: 1165 Comm: bluetoothd Tainted: G      D      3.13.0-0-generic #1~unstable201311192152
[   31.269075] Hardware name: System76, Inc. Galago UltraPro/Galago UltraPro, BIOS 4.6.5 07/09/2013
[   31.269138] task: ffff880402ac6000 ti: ffff8804093e0000 task.ti: ffff8804093e0000
[   31.269195] RIP: 0010:[<ffffffffa061004b>]  [<ffffffffa061004b>] rfcomm_sock_getsockopt+0x10b/0x290 [rfcomm]
[   31.269272] RSP: 0018:ffff8804093e1f00  EFLAGS: 00010246
[   31.269309] RAX: 0000b8763f78eb76 RBX: 0000000000000012 RCX: 00007fff73fcef88
[   31.269360] RDX: 0000000000000003 RSI: 0000000000000012 RDI: ffff880404493700
[   31.269411] RBP: ffff8804093e1f38 R08: 00007fff73fcef8c R09: 00007fff73fcf208
[   31.269462] R10: ffff88040f010430 R11: 0000000000000202 R12: ffff88040932ec00
[   31.269514] R13: 00007fff73fcef88 R14: 0000000000000003 R15: ffff880404493700
[   31.269565] FS:  00007f86afcb5740(0000) GS:ffff88041fa00000(0000) knlGS:0000000000000000
[   31.269622] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.269662] CR2: 00007f86aef2bec0 CR3: 0000000406aa9000 CR4: 00000000001407f0
[   31.269707] Stack:
[   31.269720]  0000000000000246 ffff8804093e1f58 ffff880404493700 0000000000000012
[   31.269775]  0000000000000003 00007fff73fcef88 00007fff73fcef8c ffff8804093e1f78
[   31.269833]  ffffffff81614448 0000000000000000 0000000000000001 00007fff73fcf208
[   31.269896] Call Trace:
[   31.269923]  [<ffffffff81614448>] SyS_getsockopt+0x68/0xd0
[   31.269973]  [<ffffffff817355ff>] tracesys+0xe1/0xe6
[   31.270010] Code: f1 48 83 c4 10 44 89 c8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00 4d 8b 67 20 f6 05 47 6f 00 00 04 49 8b 84 24 e8 02 00 00 <48> 8b 18 0f 85 48 01 00 00 4c 89 c0 e8 f4 52 d7 e0 85 c0 49 89 
[   31.270233] RIP  [<ffffffffa061004b>] rfcomm_sock_getsockopt+0x10b/0x290 [rfcomm]
[   31.270294]  RSP <ffff8804093e1f00>
[   31.270322] ---[ end trace cd2dc7599da16d4a ]---

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https://bugs.launchpad.net/bugs/1252874

Title:
  Kernel panic shortly after pairing Apple Magic Touchpad

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  My kernel reliably panics shortly after - maybe 10 seconds or so? -
  pairing an Apple Magic Touchpad.

  Other bluetooth devices don't cause the same problem - I've tried a
  pair of bluetooth headphones, a bluetooth speaker, a bluetooth
  printer, and a Nexus 4; all of these work as expected. This would seem
  to suggest a problem in hid_magicmouse?

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.12.0-2-generic 3.12.0-2.7
  ProcVersionSignature: Ubuntu 3.12.0-2.7-generic 3.12.0
  Uname: Linux 3.12.0-2-generic x86_64
  ApportVersion: 2.12.6-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  chris      2576 F.... pulseaudio
   /dev/snd/controlC0:  chris      2576 F.... pulseaudio
  Date: Wed Nov 20 08:26:11 2013
  InstallationDate: Installed on 2013-08-06 (105 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: System76, Inc. Galago UltraPro
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.12.0-2-generic.efi.signed root=UUID=92c2fa03-f29c-4bcc-87ab-f0fe28c134f2 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.12.0-2-generic N/A
   linux-backports-modules-3.12.0-2-generic  N/A
   linux-firmware                            1.117
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2013-08-06 (105 days ago)
  dmi.bios.date: 07/09/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.5
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: Galago UltraPro
  dmi.board.vendor: System76, Inc.
  dmi.board.version: galu1
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: System76, Inc,
  dmi.chassis.version: galu1
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd07/09/2013:svnSystem76,Inc.:pnGalagoUltraPro:pvrgalu1:rvnSystem76,Inc.:rnGalagoUltraPro:rvrgalu1:cvnSystem76,Inc,:ct9:cvrgalu1:
  dmi.product.name: Galago UltraPro
  dmi.product.version: galu1
  dmi.sys.vendor: System76, Inc.

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