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[Tyson Clugg <1362538@xxxxxxxxxxxxxxxxxx>]

I was looking at the details before letting apport submit the bug and I
noticed that the stack trace I was just like the one submitted here
having no debug information available.  So I ran 'sudo apt-get install
bluez-dbg libbluetooth3-dbg', rebooted and the problem went away... it's
a hiesenbug.  :-/

I'll remove the debug packages one by one rebooting between and report
back with any more details I can find.

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https://bugs.launchpad.net/bugs/1362538

Title:
  bluetoothd crashed with SIGSEGV in server_disconnect()

Status in “bluez” package in Ubuntu:
  Confirmed

Bug description:
  at startup

  ProblemType: Crash
  DistroRelease: Ubuntu 14.10
  Package: bluez 4.101-0ubuntu19
  ProcVersionSignature: Ubuntu 3.16.0-10.15-generic 3.16.1
  Uname: Linux 3.16.0-9-generic x86_64
  ApportVersion: 2.14.6-0ubuntu2
  Architecture: amd64
  Date: Thu Aug 21 02:15:28 2014
  ExecutablePath: /usr/sbin/bluetoothd
  InterestingModules: bnep rfcomm btusb bluetooth
  MachineType: Acer Aspire V5-551
  ProcCmdline: /usr/sbin/bluetoothd
  ProcEnviron:
   PATH=(custom, no user)
   TERM=linux
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-10-generic.efi.signed root=UUID=bdba8918-495e-47cf-bc7c-8dc076ec2212 ro text nomodeset noplymouth console=tty1 radeon.dpm=1 acpi_backlight=vendor nomdmonddf nomdmonisw
  SegvAnalysis:
   Segfault happened at: 0x7fbb97d33e1c <__GI___libc_free+28>:	mov    -0x8(%rdi),%rax
   PC (0x7fbb97d33e1c) ok
   source "-0x8(%rdi)" (0x00000019) not located in a known VMA region (needed readable region)!
   destination "%rax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: bluez
  StacktraceTop:
   __GI___libc_free (mem=0x21) at malloc.c:2929
   ?? ()
   ?? ()
   ?? ()
   dbus_connection_try_register_fallback () from /lib/x86_64-linux-gnu/libdbus-1.so.3
  Title: bluetoothd crashed with SIGSEGV in __GI___libc_free()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 04/19/2013
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V2.16
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Havok
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - A01 Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.16:bd04/19/2013:svnAcer:pnAspireV5-551:pvrV2.16:rvnAcer:rnHavok:rvrType2-A01BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: Aspire V5-551
  dmi.product.version: V2.16
  dmi.sys.vendor: Acer
  hciconfig:
   hci0:	Type: BR/EDR  Bus: USB
   	BD Address: F4:B7:E2:88:01:EE  ACL MTU: 1022:8  SCO MTU: 183:5
   	UP RUNNING PSCAN ISCAN 
   	RX bytes:1224 acl:0 sco:0 events:74 errors:0
   	TX bytes:2300 acl:0 sco:0 commands:74 errors:0
  mtime.conffile..etc.bluetooth.audio.conf: 2014-06-10T23:38:40.331777

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