Private is the default state for crashes because those bugs could
potentially contain personal information in crash data.

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https://bugs.launchpad.net/bugs/1924217

Title:
  bluetoothd 5.56 segfaults when keyboard connects [SIGSEGV in
  get_report_cb() from notify_handler() from notify_handler() from
  queue_foreach() from queue_foreach()]

Status in Bluez Utilities:
  Fix Released
Status in bluez package in Ubuntu:
  Fix Committed

Bug description:
  https://errors.ubuntu.com/problem/e93420b383ce737e9a5dd894617135836bd75eb8

  ---

  bluetoothd crashes when my Lenovo Trackpoint II keyboard connects. I see this 
in dmesg:
  [   58.257605] input: TrackPoint Keyboard II Keyboard as 
/devices/virtual/misc/uhid/0005:17EF:60E1.0005/input/input26
  [   58.258542] input: TrackPoint Keyboard II Mouse as 
/devices/virtual/misc/uhid/0005:17EF:60E1.0005/input/input27
  [   58.259561] input: TrackPoint Keyboard II Consumer Control as 
/devices/virtual/misc/uhid/0005:17EF:60E1.0005/input
  /input28
  [   58.259661] input: TrackPoint Keyboard II System Control as 
/devices/virtual/misc/uhid/0005:17EF:60E1.0005/input/i
  nput29
  [   58.260151] input: TrackPoint Keyboard II as 
/devices/virtual/misc/uhid/0005:17EF:60E1.0005/input/input31
  [   58.260267] hid-generic 0005:17EF:60E1.0005: input,hidraw4: BLUETOOTH HID 
v0.47 Keyboard [TrackPoint Keyboard II]
  on 10:4a:7d:01:8d:7f
  [   58.263556] bluetoothd[685]: segfault at 59 ip 00005574d1d10683 sp 
00007ffd03bd7570 error 6 in bluetoothd[5574d1ce5000+a9000]
  [   58.263568] Code: 00 00 4c 8b 21 64 48 8b 04 25 28 00 00 00 48 89 84 24 38 
11 00 00 31 c0 48 8d 6c 24 10 89 fb 49 89 c9 48 89 ef b9 23 02 00 00 <41> c7 44 
24 58 00 00 00 00 f3 48 ab c7 44 24 10 0a 00 00 00 c7 07

  This segfault is with bluez 5.56-0ubuntu3 in Ubuntu 21.04 (up-to-date as of 
today). It did not happen in 20.10.
  When I downgraded bluez to 5.55-0ubuntu1.1 the problem went away.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: bluez 5.56-0ubuntu3
  Uname: Linux 5.11.0-051100-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu62
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: GNOME
  Date: Wed Apr 14 21:03:29 2021
  InstallationDate: Installed on 2021-02-26 (47 days ago)
  InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  InterestingModules: rfcomm bnep btusb bluetooth
  MachineType: LENOVO 20AW0006US
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/zsh
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-051100-generic 
root=UUID=d3f49081-f2cd-43ca-b9ed-bd8157d94ee3 ro quiet splash vt.handoff=7
  SourcePackage: bluez
  UpgradeStatus: Upgraded to hirsute on 2021-04-14 (0 days ago)
  dmi.bios.date: 01/27/2015
  dmi.bios.release: 2.31
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GLET77WW (2.31 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AW0006US
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98401 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.ec.firmware.release: 1.8
  dmi.modalias: 
dmi:bvnLENOVO:bvrGLET77WW(2.31):bd01/27/2015:br2.31:efr1.8:svnLENOVO:pn20AW0006US:pvrThinkPadT440p:rvnLENOVO:rn20AW0006US:rvr0B98401WIN:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.family: ThinkPad T440p
  dmi.product.name: 20AW0006US
  dmi.product.sku: LENOVO_MT_20AW_BU_Think_FM_ThinkPad T440p
  dmi.product.version: ThinkPad T440p
  dmi.sys.vendor: LENOVO
  hciconfig:
   hci0:        Type: Primary  Bus: USB
    BD Address: 10:4A:7D:01:8D:7F  ACL MTU: 1021:5  SCO MTU: 96:5
    UP RUNNING
    RX bytes:267050 acl:16636 sco:0 events:966 errors:0
    TX bytes:28087 acl:371 sco:0 commands:388 errors:0

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