It's not bluetoothd (BlueZ) crashing. The log information shows the kernel crashing in 'bluetooth' which is a kernel module. This will of course cause bluetoothd to stop working properly, but the bug is not in bluetoothd, it's in the kernel.
** Summary changed: - [bluez] regression: bluetoothd crash with Bose QC35 + [regression] Kernel crash with Bose QC35 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1729030 Title: [regression] Kernel crash in bluetooth with Bose QC35 Status in linux package in Ubuntu: Incomplete Bug description: Bose QC35 with latest firmware Ubuntu 17.10 This is a regression from 17.04 Ubuntu Gnome. In 17.04, you had to temporarily disable `le` mode to pair but after pairing, everything worked flawlessly. In 17.10, pairing works out of the box, but the following issue appears: After a few hours of being connected, the connection between bose qc35 and Ubuntu seemingly breaks: the headphones don't play any sound anymore. re-pairing fails and restarting the headphones doesn't fix the issue. It seems bluetoothd crashed conmpletely since `bluetoothctl` doesn't work anymore.. Restarting Ubuntu fixes the issue. syslog contains a bunch of kernel stacktraces including a nullpointer dereference.. Oct 31 16:41:06 travers dbus-daemon[3888]: Activating via systemd: service name='org.bluez.obex' unit='dbus-org.bluez.obex.service' Oct 31 16:41:06 travers systemd[3874]: Starting Bluetooth OBEX service... Oct 31 16:41:06 travers bluetoothd[1128]: Failed to set mode: Busy (0x0a) Oct 31 16:41:06 travers obexd[29587]: OBEX daemon 5.46 Oct 31 16:41:06 travers dbus-daemon[3888]: Successfully activated service 'org.bluez.obex' Oct 31 16:41:06 travers systemd[3874]: Started Bluetooth OBEX service. Oct 31 16:41:06 travers bluetoothd[1128]: Failed to set mode: Busy (0x0a) Oct 31 16:41:06 travers bluetoothd[1128]: Failed to set mode: Busy (0x0a) Oct 31 16:41:12 travers kernel: Bluetooth: hci0 link tx timeout Oct 31 16:41:12 travers kernel: Bluetooth: hci0 killing stalled connection 04:52:c7:60:d6:2c Oct 31 16:41:12 travers acpid[1126]: input device has been disconnected, fd 24 Oct 31 16:41:12 travers kernel: Bluetooth: hci0 link tx timeout Oct 31 16:41:12 travers kernel: Bluetooth: hci0 killing stalled connection 04:52:c7:60:d6:2c Oct 31 16:41:14 travers bluetoothd[1128]: Disconnecting failed: already disconnected Oct 31 16:41:18 travers bluetoothd[1128]: Close: Connection timed out (110) Oct 31 16:41:18 travers kernel: Bluetooth: hci0 link tx timeout Oct 31 16:41:18 travers kernel: Bluetooth: hci0 killing stalled connection 04:52:c7:60:d6:2c Oct 31 16:41:20 travers bluetoothd[1128]: Abort: Connection timed out (110) Oct 31 16:41:20 travers kernel: Bluetooth: hci0 link tx timeout Oct 31 16:41:20 travers kernel: Bluetooth: hci0 killing stalled connection 04:52:c7:60:d6:2c Oct 31 16:41:20 travers kernel: Bluetooth: hci0 link tx timeout Oct 31 16:41:20 travers kernel: Bluetooth: hci0 killing stalled connection 04:52:c7:60:d6:2c Oct 31 16:41:20 travers dbus[1074]: [system] Rejected send message, 3 matched rules; type="method_return", sender=":1.86" (uid=1000 pid=3997 comm="/usr/bin/pulseaudio --start --log-target=syslog ") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.7" (uid=0 pid=1128 comm="/usr/lib/bluetooth/bluetoothd ") Oct 31 16:41:20 travers gsd-media-keys[4157]: Unable to get default sink Oct 31 16:41:32 travers kernel: sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/bluetooth/hci0/hci0:256' Oct 31 16:41:32 travers kernel: ------------[ cut here ]------------ Oct 31 16:41:32 travers kernel: WARNING: CPU: 2 PID: 19117 at /build/linux-XO_uEE/linux-4.13.0/fs/sysfs/dir.c:31 sysfs_warn_dup+0x56/0x70 Oct 31 16:41:32 travers kernel: Modules linked in: rfcomm ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 xt_comment zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ccm cmac xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bnep nls_iso8859_1 arc4 hid_alps snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm dell_rbtn dell_laptop iwlmvm irqbypass dell_smm_hwmon mac80211 crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek snd_hda_codec_generic Oct 31 16:41:32 travers kernel: ghash_clmulni_intel pcbc iwlwifi rtsx_pci_ms uvcvideo cfg80211 memstick videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media aesni_intel aes_x86_64 crypto_simd glue_helper cryptd intel_cstate intel_rapl_perf snd_hda_intel snd_hda_codec joydev snd_hda_core snd_hwdep snd_pcm btusb btrtl snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device input_leds snd_timer serio_raw snd dell_wmi dell_smbios dcdbas wmi_bmof soundcore mei_me shpchp idma64 hci_uart mei virt_dma processor_thermal_device intel_pch_thermal intel_soc_dts_iosf intel_lpss_pci btbcm serdev btqca btintel bluetooth ecdh_generic dell_smo8800 int3403_thermal tpm_crb intel_hid intel_lpss_acpi int340x_thermal_zone int3400_thermal acpi_als acpi_thermal_rel intel_lpss kfifo_buf sparse_keymap mac_hid Oct 31 16:41:32 travers kernel: acpi_pad industrialio parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit rtsx_pci_sdmmc drm_kms_helper e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core rtsx_pci drm ahci libahci wmi i2c_hid hid video pinctrl_sunrisepoint pinctrl_intel Oct 31 16:41:32 travers kernel: CPU: 2 PID: 19117 Comm: kworker/u9:1 Tainted: P OE 4.13.0-16-generic #19-Ubuntu Oct 31 16:41:32 travers kernel: Hardware name: Dell Inc. Latitude 5580/0DTP1F, BIOS 1.6.4 09/12/2017 Oct 31 16:41:32 travers kernel: Workqueue: hci0 hci_rx_work [bluetooth] Oct 31 16:41:32 travers kernel: task: ffff93b3ef8017c0 task.stack: ffffb77091e8c000 Oct 31 16:41:32 travers kernel: RIP: 0010:sysfs_warn_dup+0x56/0x70 Oct 31 16:41:32 travers kernel: RSP: 0018:ffffb77091e8fb80 EFLAGS: 00010282 Oct 31 16:41:32 travers kernel: RAX: 0000000000000073 RBX: ffff93b46769a000 RCX: 0000000000000000 Oct 31 16:41:32 travers kernel: RDX: 0000000000000000 RSI: ffff93b5ee50dc78 RDI: ffff93b5ee50dc78 Oct 31 16:41:32 travers kernel: RBP: ffffb77091e8fb98 R08: 0000000000000001 R09: 0000000000000436 Oct 31 16:41:32 travers kernel: R10: 0000000000000001 R11: 0000000000000000 R12: ffff93b54df84e50 Oct 31 16:41:32 travers kernel: R13: ffff93b5d0581690 R14: ffff93b5d4d1c288 R15: ffff93b5d7bb4c50 Oct 31 16:41:32 travers kernel: FS: 0000000000000000(0000) GS:ffff93b5ee500000(0000) knlGS:0000000000000000 Oct 31 16:41:32 travers kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 31 16:41:32 travers kernel: CR2: 000020563636d008 CR3: 00000003bed2c000 CR4: 00000000003406e0 Oct 31 16:41:32 travers kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Oct 31 16:41:32 travers kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Oct 31 16:41:32 travers kernel: Call Trace: Oct 31 16:41:32 travers kernel: sysfs_create_dir_ns+0x77/0x90 Oct 31 16:41:32 travers kernel: kobject_add_internal+0xac/0x2b0 Oct 31 16:41:32 travers kernel: kobject_add+0x71/0xd0 Oct 31 16:41:32 travers kernel: ? kfree_const+0x20/0x30 Oct 31 16:41:32 travers kernel: device_add+0x12c/0x680 Oct 31 16:41:32 travers kernel: hci_conn_add_sysfs+0x49/0xc0 [bluetooth] Oct 31 16:41:32 travers kernel: hci_conn_complete_evt.isra.46+0xc6/0x3f0 [bluetooth] Oct 31 16:41:32 travers kernel: hci_event_packet+0x1ac5/0x2a80 [bluetooth] Oct 31 16:41:32 travers kernel: ? pick_next_task_fair+0x131/0x560 Oct 31 16:41:32 travers kernel: hci_rx_work+0x18d/0x380 [bluetooth] Oct 31 16:41:32 travers kernel: ? hci_rx_work+0x18d/0x380 [bluetooth] Oct 31 16:41:32 travers kernel: ? __schedule+0x293/0x890 Oct 31 16:41:32 travers kernel: process_one_work+0x1e7/0x410 Oct 31 16:41:32 travers kernel: worker_thread+0x4a/0x410 Oct 31 16:41:32 travers kernel: kthread+0x125/0x140 Oct 31 16:41:32 travers kernel: ? process_one_work+0x410/0x410 Oct 31 16:41:32 travers kernel: ? kthread_create_on_node+0x70/0x70 Oct 31 16:41:32 travers kernel: ret_from_fork+0x25/0x30 Oct 31 16:41:32 travers kernel: Code: 85 c0 48 89 c3 74 12 b9 00 10 00 00 48 89 c2 31 f6 4c 89 ef e8 0c c8 ff ff 4c 89 e2 48 89 de 48 c7 c7 d0 9f 4c b4 e8 cb 78 e0 ff <0f> ff 48 89 df e8 60 bd f4 ff 5b 41 5c 41 5d 5d c3 66 0f 1f 84 Oct 31 16:41:32 travers kernel: ---[ end trace d6a6ced6c41fcfc5 ]--- Oct 31 16:41:32 travers kernel: kobject_add_internal failed for hci0:256 with -EEXIST, don't try to register things with the same name in the same directory. Oct 31 16:41:32 travers kernel: ------------[ cut here ]------------ Oct 31 16:41:32 travers kernel: WARNING: CPU: 2 PID: 19117 at /build/linux-XO_uEE/linux-4.13.0/lib/kobject.c:240 kobject_add_internal+0x26b/0x2b0 Oct 31 16:41:32 travers kernel: Modules linked in: rfcomm ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 xt_comment zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ccm cmac xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bnep nls_iso8859_1 arc4 hid_alps snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm dell_rbtn dell_laptop iwlmvm irqbypass dell_smm_hwmon mac80211 crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek snd_hda_codec_generic Oct 31 16:41:32 travers kernel: ghash_clmulni_intel pcbc iwlwifi rtsx_pci_ms uvcvideo cfg80211 memstick videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media aesni_intel aes_x86_64 crypto_simd glue_helper cryptd intel_cstate intel_rapl_perf snd_hda_intel snd_hda_codec joydev snd_hda_core snd_hwdep snd_pcm btusb btrtl snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device input_leds snd_timer serio_raw snd dell_wmi dell_smbios dcdbas wmi_bmof soundcore mei_me shpchp idma64 hci_uart mei virt_dma processor_thermal_device intel_pch_thermal intel_soc_dts_iosf intel_lpss_pci btbcm serdev btqca btintel bluetooth ecdh_generic dell_smo8800 int3403_thermal tpm_crb intel_hid intel_lpss_acpi int340x_thermal_zone int3400_thermal acpi_als acpi_thermal_rel intel_lpss kfifo_buf sparse_keymap mac_hid Oct 31 16:41:32 travers kernel: acpi_pad industrialio parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit rtsx_pci_sdmmc drm_kms_helper e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core rtsx_pci drm ahci libahci wmi i2c_hid hid video pinctrl_sunrisepoint pinctrl_intel Oct 31 16:41:32 travers kernel: CPU: 2 PID: 19117 Comm: kworker/u9:1 Tainted: P W OE 4.13.0-16-generic #19-Ubuntu Oct 31 16:41:32 travers kernel: Hardware name: Dell Inc. Latitude 5580/0DTP1F, BIOS 1.6.4 09/12/2017 Oct 31 16:41:32 travers kernel: Workqueue: hci0 hci_rx_work [bluetooth] Oct 31 16:41:32 travers kernel: task: ffff93b3ef8017c0 task.stack: ffffb77091e8c000 Oct 31 16:41:32 travers kernel: RIP: 0010:kobject_add_internal+0x26b/0x2b0 Oct 31 16:41:32 travers kernel: RSP: 0018:ffffb77091e8fbd0 EFLAGS: 00010286 Oct 31 16:41:32 travers kernel: RAX: 000000000000007d RBX: ffff93b5d4d1c298 RCX: 0000000000000006 Oct 31 16:41:32 travers kernel: RDX: 0000000000000000 RSI: 0000000000000086 RDI: ffff93b5ee50dc70 Oct 31 16:41:32 travers kernel: RBP: ffffb77091e8fc00 R08: 0000000000000001 R09: 0000000000000461 Oct 31 16:41:32 travers kernel: R10: ffffe5630a9da600 R11: 0000000000000000 R12: ffff93b5d7bb4c50 Oct 31 16:41:32 travers kernel: R13: 00000000ffffffef R14: ffff93b5d4d1c288 R15: ffff93b5d7bb4c50 Oct 31 16:41:32 travers kernel: FS: 0000000000000000(0000) GS:ffff93b5ee500000(0000) knlGS:0000000000000000 Oct 31 16:41:32 travers kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 31 16:41:32 travers kernel: CR2: 000020563636d008 CR3: 00000003bed2c000 CR4: 00000000003406e0 Oct 31 16:41:32 travers kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Oct 31 16:41:32 travers kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Oct 31 16:41:32 travers kernel: Call Trace: Oct 31 16:41:32 travers kernel: kobject_add+0x71/0xd0 Oct 31 16:41:32 travers kernel: ? kfree_const+0x20/0x30 Oct 31 16:41:32 travers kernel: device_add+0x12c/0x680 Oct 31 16:41:32 travers kernel: hci_conn_add_sysfs+0x49/0xc0 [bluetooth] Oct 31 16:41:32 travers kernel: hci_conn_complete_evt.isra.46+0xc6/0x3f0 [bluetooth] Oct 31 16:41:32 travers kernel: hci_event_packet+0x1ac5/0x2a80 [bluetooth] Oct 31 16:41:32 travers kernel: ? pick_next_task_fair+0x131/0x560 Oct 31 16:41:32 travers kernel: hci_rx_work+0x18d/0x380 [bluetooth] Oct 31 16:41:32 travers kernel: ? hci_rx_work+0x18d/0x380 [bluetooth] Oct 31 16:41:32 travers kernel: ? __schedule+0x293/0x890 Oct 31 16:41:32 travers kernel: process_one_work+0x1e7/0x410 Oct 31 16:41:32 travers kernel: worker_thread+0x4a/0x410 Oct 31 16:41:32 travers kernel: kthread+0x125/0x140 Oct 31 16:41:32 travers kernel: ? process_one_work+0x410/0x410 Oct 31 16:41:32 travers kernel: ? kthread_create_on_node+0x70/0x70 Oct 31 16:41:32 travers kernel: ret_from_fork+0x25/0x30 Oct 31 16:41:32 travers kernel: Code: 49 89 c4 48 85 ff 0f 84 44 fe ff ff 48 83 c7 18 e9 ff fd ff ff 48 8b 13 48 c7 c6 d0 57 30 b4 48 c7 c7 b8 65 56 b4 e8 66 5f 7f ff <0f> ff e9 92 fe ff ff 0f ff eb a5 0f ff eb 98 41 bd fe ff ff ff Oct 31 16:41:32 travers kernel: ---[ end trace d6a6ced6c41fcfc6 ]--- Oct 31 16:41:32 travers kernel: Bluetooth: Failed to register connection device Oct 31 16:41:32 travers kernel: Bluetooth: hci0 link tx timeout Oct 31 16:41:32 travers kernel: Bluetooth: hci0 killing stalled connection 04:52:c7:60:d6:2c Oct 31 16:41:32 travers bluetoothd[1128]: No matching connection for device Oct 31 16:41:32 travers kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 Oct 31 16:41:32 travers kernel: IP: klist_next+0x16/0xb0 Oct 31 16:41:32 travers kernel: PGD 0 Oct 31 16:41:32 travers kernel: P4D 0 Oct 31 16:41:32 travers kernel: Oct 31 16:41:32 travers kernel: Oops: 0000 [#1] SMP Oct 31 16:41:32 travers kernel: Modules linked in: rfcomm ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 xt_comment zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ccm cmac xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bnep nls_iso8859_1 arc4 hid_alps snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm dell_rbtn dell_laptop iwlmvm irqbypass dell_smm_hwmon mac80211 crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek snd_hda_codec_generic Oct 31 16:41:32 travers kernel: ghash_clmulni_intel pcbc iwlwifi rtsx_pci_ms uvcvideo cfg80211 memstick videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media aesni_intel aes_x86_64 crypto_simd glue_helper cryptd intel_cstate intel_rapl_perf snd_hda_intel snd_hda_codec joydev snd_hda_core snd_hwdep snd_pcm btusb btrtl snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device input_leds snd_timer serio_raw snd dell_wmi dell_smbios dcdbas wmi_bmof soundcore mei_me shpchp idma64 hci_uart mei virt_dma processor_thermal_device intel_pch_thermal intel_soc_dts_iosf intel_lpss_pci btbcm serdev btqca btintel bluetooth ecdh_generic dell_smo8800 int3403_thermal tpm_crb intel_hid intel_lpss_acpi int340x_thermal_zone int3400_thermal acpi_als acpi_thermal_rel intel_lpss kfifo_buf sparse_keymap mac_hid Oct 31 16:41:32 travers kernel: acpi_pad industrialio parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit rtsx_pci_sdmmc drm_kms_helper e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core rtsx_pci drm ahci libahci wmi i2c_hid hid video pinctrl_sunrisepoint pinctrl_intel # HCICONFIG OUTPUT hci0: Type: Primary Bus: USB BD Address: CC:2F:71:7D:95:00 ACL MTU: 1021:4 SCO MTU: 96:6 UP RUNNING PSCAN ISCAN RX bytes:5571230 acl:176 sco:0 events:648741 errors:0 TX bytes:385789321 acl:625464 sco:0 commands:2503 errors:0 Features: 0xff 0xfe 0x0f 0xfe 0xdb 0xff 0x7b 0x87 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: RSWITCH HOLD SNIFF Link mode: SLAVE ACCEPT Can't read local name on hci0: Connection timed out (110) # BLUETOOTHCTL OUTPUT bluetoothctl [bluetooth]# nnect to bluetoothd... [bluetooth]# [bluetooth]# show No default controller available [bluetooth]# devices No default controller available [bluetooth]# info Missing device address argument [bluetooth]# sudo wireless-tools.rfkill list Can't open RFKILL control device: Permission denied To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1729030/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
