[Pkg-bluetooth-maintainers] Bug#878181: bluez: same behaviour, invalid packet size

[Sebastian Schneider]

Package: bluez
Version: 5.47-1
Followup-For: Bug #878181

Dear Maintainer,

after some updates last weeki(not sure which one) bluetooth is suddenly unstable.
Doens't matter if I use my headset or mouse or both, bt suddenly stops working. Often after a short period of time.

btmon output:
> HCI Event: Vendor (0xff) plen 7                                                                                                                                                               #3 [hci0] 1.859597
      Intel Bootup (0x02)
        Zero: 0x00
        Number of packets: 2
        Source: Operational firmware (0x01)
        Reset type: Soft software reset (0x02)
        Reset reason: System exception (0x05)
        DDC status: Persistent RAM (0x02)
> HCI Event: Vendor (0xff) plen 189                                                                                                                                                             #4 [hci0] 1.862589
      Intel System Exception (0x29)
        invalid packet size
        01 00 00 00 00 00 00 00 02 47 01 01 d8 32 01 50  .........G...2.P
        b0 b5 0b 00 00 47 01 01 06 00 00 00 00 00 00 00  .....G..........
        00 00 00 00 00 00 00 00 ff 93 10 5b f4 8c 2a 36  ...........[..*6
        bb f0 75 00 5c 23 01 50 00 40 00 00 00 00 00 00  ..u.\#.P. at ......
        00 00 00 00 04 00 00 00 02 00 00 00 05 00 00 00  ................
        f8 ff 00 00 fc ff 00 00 f9 ff 00 00 14 00 00 50  ...............P
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
        00 00 00 00 00 00 00 00 00 00 00 00 74 18 00 50  ............t..P
        f8 ff 00 00 a0 ad 0b 00 74 13 00 50 10 a0 05 00  ........t..P....
        a4 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
        ef ef ef ef ef ef ef ef ef ef ef ef              ............    

hcidump output:
> ACL data: handle 256 flags 0x02 dlen 11
    L2CAP(d): cid 0x0041 len 7 [psm 19]
      HIDP: Data: Input report
> ACL data: handle 256 flags 0x02 dlen 11
    L2CAP(d): cid 0x0041 len 7 [psm 19]
      HIDP: Data: Input report
> ACL data: handle 256 flags 0x02 dlen 11
    L2CAP(d): cid 0x0041 len 7 [psm 19]
      HIDP: Data: Input report
> HCI Event: Vendor (0xff) plen 7
> HCI Event: Vendor (0xff) plen 189

A quick fix is stopping the bluetooth service and shutdown the hci0 interface, start it again and afterwards start the bluetooth daemon again.
This "fixes" the problem for 0 to 120 seconds.
As this happens with multiple bluetooth devices, which work fine on other computers, I'm pretty sure something broke in bluez.

Best
Sebastian


-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.13.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages bluez depends on:
ii  dbus                 1.11.20-1
ii  init-system-helpers  1.50
ii  kmod                 24-1
ii  libasound2           1.1.3-5
ii  libc6                2.24-17
ii  libdbus-1-3          1.11.20-1
ii  libdw1               0.170-0.1
ii  libglib2.0-0         2.54.1-1
ii  libreadline7         7.0-3
ii  libudev1             235-2
ii  lsb-base             9.20170808
ii  udev                 235-2

bluez recommends no packages.

Versions of packages bluez suggests:
ii  pulseaudio-module-bluetooth  11.1-1

-- no debconf information