Package: dbus Version: 1.10.20-1 Severity: normal I ran apt-get dist-upgrade to unstable today from a xfce4-terminal and at some point in the upgrade the entire X session uncerimoniously ended, losing anything I was working on at the time and dumping me back into the lightdm login screen.
When I logged back in, I noticed that network-manager was not running any longer, and that the apt-get dist-upgrade was still running, apparently not connected to any terminal. After a while it appeared to stall out at a conffile prompt. I killed the dpkg process and ran apt-get -f install, and completed the upgrade. network-manager remained not running until I manually started it. Here's the journal from when network-manager died: Jul 06 09:16:39 darkstar NetworkManager[21505]: <warn> [1499346999.1047] bus-manager: disconnected by the system bus Jul 06 09:16:39 darkstar NetworkManager[21505]: <info> [1499346999.5461] caught SIGTERM, shutting down normally. Here's lightdm restarting: Jul 06 09:16:39 darkstar lightdm[832]: Failed to get D-Bus connection Jul 06 09:16:39 darkstar systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE Jul 06 09:16:43 darkstar systemd[1]: lightdm.service: Unit entered failed state. Jul 06 09:16:43 darkstar systemd[1]: lightdm.service: Triggering OnFailure= dependencies. Jul 06 09:16:43 darkstar systemd[1]: lightdm.service: Failed with result 'exit-code'. Jul 06 09:16:43 darkstar systemd[1]: lightdm.service: Service hold-off time over, scheduling restart. Jul 06 09:16:43 darkstar systemd[1]: Stopped Light Display Manager. Jul 06 09:16:43 darkstar systemd[1]: Starting Light Display Manager... Jul 06 09:16:43 darkstar systemd[1]: Started Light Display Manager. Here's closer to the root cause, where dbus died: Jul 06 09:16:38 darkstar dbus[650]: [system] Unable to reload configuration: (null) Jul 06 09:16:38 darkstar dbus-daemon[650]: Unable to reload configuration: (null) Jul 06 09:16:39 darkstar systemd[1]: dbus.service: Main process exited, code=killed, status=11/SEGV Jul 06 09:16:39 darkstar systemd[1]: dbus.service: Unit entered failed state. Jul 06 09:16:39 darkstar systemd[1]: dbus.service: Failed with result 'exit-code'. Jul 06 09:16:39 darkstar systemd[1]: Started D-Bus System Message Bus. Here's the dpkg.log around the same time: 2017-07-06 09:16:37 startup packages configure 2017-07-06 09:16:37 configure libudev1:amd64 233-10 <none> 2017-07-06 09:16:37 status unpacked libudev1:amd64 233-10 2017-07-06 09:16:37 status half-configured libudev1:amd64 233-10 2017-07-06 09:16:37 status installed libudev1:amd64 233-10 2017-07-06 09:16:37 configure libudev1:i386 233-10 <none> 2017-07-06 09:16:37 status unpacked libudev1:i386 233-10 2017-07-06 09:16:38 status half-configured libudev1:i386 233-10 2017-07-06 09:16:38 status installed libudev1:i386 233-10 2017-07-06 09:16:38 startup archives unpack 2017-07-06 09:16:38 upgrade bluez:amd64 5.43-2 5.45-1 2017-07-06 09:16:38 status half-configured bluez:amd64 5.43-2 2017-07-06 09:16:38 status unpacked bluez:amd64 5.43-2 2017-07-06 09:16:38 status half-installed bluez:amd64 5.43-2 2017-07-06 09:16:38 status triggers-pending dbus:amd64 1.10.20-1 2017-07-06 09:16:38 status triggers-pending systemd:amd64 233-9 2017-07-06 09:16:39 status triggers-pending dbus:amd64 1.10.20-1 2017-07-06 09:16:39 status half-installed bluez:amd64 5.43-2 2017-07-06 09:16:39 status unpacked bluez:amd64 5.45-1 2017-07-06 09:16:39 status unpacked bluez:amd64 5.45-1 Here's the whole system journal in the minute in question: Jul 06 09:16:24 darkstar systemd[1]: Reloading. Jul 06 09:16:24 darkstar systemd[1]: Configuration file /etc/systemd/system/postfix.service.d/override.conf is marked world-inaccessible. This has no e Jul 06 09:16:24 darkstar systemd[1]: Configuration file /etc/systemd/system/opendkim.service.d/override.conf is marked world-inaccessible. This has no Jul 06 09:16:25 darkstar systemd[1]: Reloading. Jul 06 09:16:26 darkstar systemd[1]: Configuration file /etc/systemd/system/postfix.service.d/override.conf is marked world-inaccessible. This has no e Jul 06 09:16:26 darkstar systemd[1]: Configuration file /etc/systemd/system/opendkim.service.d/override.conf is marked world-inaccessible. This has no Jul 06 09:16:26 darkstar systemd[1]: Starting Daily apt download activities... Jul 06 09:16:26 darkstar systemd[1]: Stopped Daily apt upgrade and clean activities. Jul 06 09:16:26 darkstar systemd[1]: Stopping Daily apt upgrade and clean activities. Jul 06 09:16:26 darkstar systemd[1]: Started Daily apt upgrade and clean activities. Jul 06 09:16:26 darkstar systemd[1]: Stopped Daily apt download activities. Jul 06 09:16:26 darkstar systemd[1]: Stopping Daily apt download activities. Jul 06 09:16:26 darkstar systemd[1]: Started Daily apt download activities. Jul 06 09:16:26 darkstar systemd[1]: Started Daily apt download activities. Jul 06 09:16:38 darkstar dbus[650]: [system] Unable to reload configuration: (null) Jul 06 09:16:38 darkstar dbus-daemon[650]: Unable to reload configuration: (null) Jul 06 09:16:39 darkstar kernel: dbus-daemon[650]: segfault at 0 ip 0000562c3192e620 sp 00007ffd9c679798 error 6 in dbus-daemon (deleted)[562c31912000+ Jul 06 09:16:39 darkstar avahi-daemon[648]: Disconnected from D-Bus, exiting. Jul 06 09:16:39 darkstar bluetoothd[634]: Disconnected from D-Bus. Exiting. Jul 06 09:16:39 darkstar kernel: wlan0: deauthenticating from 00:a0:bc:67:55:c1 by local choice (Reason: 3=DEAUTH_LEAVING) Jul 06 09:16:39 darkstar wpa_supplicant[959]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:a0:bc:67:55:c1 reason=3 locally_generated=1 Jul 06 09:16:39 darkstar wpa_supplicant[959]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0 Jul 06 09:16:39 darkstar wpa_supplicant[959]: wlan0: CTRL-EVENT-TERMINATING Jul 06 09:16:39 darkstar systemd[20617]: telepathy-mission-control-5.service: Main process exited, code=exited, status=1/FAILURE Jul 06 09:16:39 darkstar avahi-daemon[648]: Got SIGTERM, quitting. Jul 06 09:16:39 darkstar console-kit-daemon[4438]: console-kit-daemon[4438]: GLib-CRITICAL: Source ID 1141 was not found when attempting to remove it Jul 06 09:16:39 darkstar console-kit-daemon[4438]: console-kit-daemon[4438]: GLib-CRITICAL: Source ID 336 was not found when attempting to remove it Jul 06 09:16:39 darkstar kernel: traps: xfce4-power-man[22073] general protection ip:7f3e83019532 sp:7ffd876cfc90 error:0 Jul 06 09:16:39 darkstar kernel: in libSM.so.6.0.1[7f3e83017000+7000] Jul 06 09:16:39 darkstar lightdm[832]: Failed to get D-Bus connection Jul 06 09:16:39 darkstar systemd[20617]: telepathy-mission-control-5.service: Unit entered failed state. Jul 06 09:16:39 darkstar avahi-daemon[648]: Leaving mDNS multicast group on interface wlan0.IPv6 with address fe80::dafb:4f91:b057:232d. Jul 06 09:16:39 darkstar systemd[20617]: telepathy-mission-control-5.service: Failed with result 'exit-code'. Jul 06 09:16:39 darkstar avahi-daemon[648]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.101. Jul 06 09:16:39 darkstar NetworkManager[21505]: <warn> [1499346999.1047] bus-manager: disconnected by the system bus Jul 06 09:16:39 darkstar avahi-daemon[648]: avahi-daemon 0.6.32 exiting. Jul 06 09:16:39 darkstar systemd[1]: dbus.service: Main process exited, code=killed, status=11/SEGV Jul 06 09:16:39 darkstar bluetoothd[634]: Endpoint unregistered: sender=:1.45 path=/MediaEndpoint/A2DPSource Jul 06 09:16:39 darkstar systemd[1]: dbus.service: Unit entered failed state. Jul 06 09:16:39 darkstar bluetoothd[634]: Endpoint unregistered: sender=:1.45 path=/MediaEndpoint/A2DPSink Jul 06 09:16:39 darkstar systemd[1]: dbus.service: Failed with result 'exit-code'. Jul 06 09:16:39 darkstar console-kit-daemon[4438]: GLib-CRITICAL: Source ID 1141 was not found when attempting to remove it Jul 06 09:16:39 darkstar systemd[1]: Started D-Bus System Message Bus. Jul 06 09:16:39 darkstar console-kit-daemon[4438]: GLib-CRITICAL: Source ID 1141 was not found when attempting to remove it Jul 06 09:16:39 darkstar systemd[1376]: telepathy-mission-control-5.service: Main process exited, code=exited, status=1/FAILURE Jul 06 09:16:39 darkstar console-kit-daemon[4438]: GLib-CRITICAL: Source ID 336 was not found when attempting to remove it Jul 06 09:16:39 darkstar systemd[1376]: telepathy-mission-control-5.service: Unit entered failed state. Jul 06 09:16:39 darkstar console-kit-daemon[4438]: GLib-CRITICAL: Source ID 336 was not found when attempting to remove it Jul 06 09:16:39 darkstar systemd[1376]: telepathy-mission-control-5.service: Failed with result 'exit-code'. Jul 06 09:16:39 darkstar rtkit-daemon[18412]: Exiting cleanly. Jul 06 09:16:39 darkstar systemd[20158]: telepathy-mission-control-5.service: Main process exited, code=exited, status=1/FAILURE Jul 06 09:16:39 darkstar rtkit-daemon[18412]: Demoting known real-time threads. Jul 06 09:16:39 darkstar systemd[20158]: telepathy-mission-control-5.service: Unit entered failed state. Jul 06 09:16:39 darkstar rtkit-daemon[18412]: Demoted 0 threads. Jul 06 09:16:39 darkstar systemd[20158]: telepathy-mission-control-5.service: Failed with result 'exit-code'. Jul 06 09:16:39 darkstar rtkit-daemon[18412]: Exiting watchdog thread. Jul 06 09:16:39 darkstar systemd[21463]: telepathy-mission-control-5.service: Main process exited, code=exited, status=1/FAILURE Jul 06 09:16:39 darkstar rtkit-daemon[18412]: Exiting canary thread. Jul 06 09:16:39 darkstar systemd[21463]: telepathy-mission-control-5.service: Unit entered failed state. Jul 06 09:16:39 darkstar bluetoothd[634]: Stopping SDP server Jul 06 09:16:39 darkstar systemd[21463]: telepathy-mission-control-5.service: Failed with result 'exit-code'. Jul 06 09:16:39 darkstar bluetoothd[634]: Exit Jul 06 09:16:39 darkstar systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE Jul 06 09:16:39 darkstar dbus[1320]: [system] Activating systemd to hand-off: service name='org.freedesktop.Avahi' unit='dbus-org.freedesktop.Avahi.ser Jul 06 09:16:39 darkstar systemd[1]: Reloading. Jul 06 09:16:39 darkstar dbus[1320]: [system] Successfully activated service 'org.freedesktop.systemd1' Jul 06 09:16:39 darkstar NetworkManager[21505]: <info> [1499346999.5461] caught SIGTERM, shutting down normally. Jul 06 09:16:39 darkstar lightdm[21896]: pam_unix(lightdm:session): session closed for user joey Jul 06 09:16:39 darkstar NetworkManager[21505]: <info> [1499346999.5471] device (wlan0): state change: activated -> deactivating (reason 'unmanaged') Looks like an upgrade of something, perhaps bluez caused the dbus trigger to run, and the reload failed for whatever reason, apparently somehow involving a null pointer dereference by dbus, segfaulting it and hosing the system. -- Package-specific info: -- System Information: Debian Release: buster/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) -- see shy jo
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