Comment 0 for bug 1924217

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