systemd-logind crashed with SIGSEGV

[Jamie Strandboge]

I'm on a xenial ubuntu-desktop and have snappy dimension on classic installed. I was working on other things and apport popped up. The trigger seems to be the background snappy update task for ubuntu-core that triggers a reboot of ubuntu-core. Looking at my logs I see:

Mar 21 10:00:30 <hostname> systemd[1]: Started Ubuntu Core Snappy AutoUpdate.
Mar 21 10:01:02 <hostname> systemd[1]: Mounting Squashfs mount unit for ubuntu-core...
Mar 21 10:01:02 <hostname> systemd[1]: Mounted Squashfs mount unit for ubuntu-core.
Mar 21 10:01:03 <hostname> snappy[25381]: Name Date Version Developer
Mar 21 10:01:03 <hostname> snappy[25381]: ubuntu-core 2016-03-21 16.04-20160321-05-01 canonical!
Mar 21 10:01:03 <hostname> snappy[25381]: Reboot to use ubuntu-core version 16.04-20160321-05-01.
Mar 21 10:01:03 <hostname> snappy[25381]: Rebooting to satisfy updates for ubuntu-core
Mar 21 10:01:03 <hostname> kernel: [85783.825747] systemd-logind[1101]: segfault at 0 ip 00007fc5cafcfd9e sp 00007ffc1cf 580b8 error 4 in libc-2.21.so[7fc5caf30000+1c0000]
Mar 21 10:01:03 <hostname> systemd[1]: systemd-logind.service: Main process exited, code=dumped, status=11/SEGV
Mar 21 10:01:03 <hostname> systemd[1]: systemd-logind.service: Unit entered failed state.
Mar 21 10:01:03 <hostname> /usr/bin/snappy[25381]: main.go:50: DEBUG: [/usr/bin/snappy update --automatic-reboot] failed : failed to auto reboot: Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: Message re cipient disconnected from message bus without replying
Mar 21 10:01:03 <hostname> snappy[25381]: failed to auto reboot: Failed to call ScheduleShutdown in logind, proceeding w ith immediate shutdown: Message recipient disconnected from message bus without replying
Mar 21 10:01:03 <hostname> systemd[1]: systemd-logind.service: Failed with result 'core-dump'.
Mar 21 10:01:03 <hostname> systemd[1]: snappy-autopilot.service: Main process exited, code=exited, status=1/FAILURE
Mar 21 10:01:03 <hostname> systemd[1]: snappy-autopilot.service: Unit entered failed state.
Mar 21 10:01:03 <hostname> systemd[1]: snappy-autopilot.service: Failed with result 'exit-code'.
Mar 21 10:01:03 <hostname> systemd[1]: systemd-logind.service: Service has no hold-off time, scheduling restart.
Mar 21 10:01:03 <hostname> systemd[1]: Stopped Login Service.
Mar 21 10:01:03 <hostname> dbus[1163]: [system] Activating via systemd: service name='org.freedesktop.login1' unit='dbus -org.freedesktop.login1.service'
Mar 21 10:01:03 <hostname> systemd[1]: Starting Login Service...
Mar 21 10:01:03 <hostname> dbus[1163]: [system] Successfully activated service 'org.freedesktop.login1'
Mar 21 10:01:03 <hostname> systemd[1]: Started Login Service.
Mar 21 10:01:03 <hostname> systemd[1]: Started User Manager for UID 1000.
Mar 21 10:01:03 <hostname> systemd[1]: Started User Manager for UID 119.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: systemd 229-2ubuntu1 [modified: usr/share/dbus-1/system-services/org.freedesktop.systemd1.service]
ProcVersionSignature: Ubuntu 4.4.0-13.29-generic 4.4.5
Uname: Linux 4.4.0-13-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
Date: Mon Mar 21 10:01:03 2016
ExecutablePath: /lib/systemd/systemd-logind
InstallationDate: Installed on 2015-06-13 (281 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: Dell Inc. XPS 13 9343
ProcCmdline: /lib/systemd/systemd-logind
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-13-generic root=UUID=7bc4dcd2-0bd8-4e42-b8b7-9f1ed6b8a3e9 ro libata.force=noncq kaslr quiet splash vt.handoff=7
Signal: 11
SourcePackage: systemd
StacktraceTop:
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Title: systemd-logind crashed with SIGSEGV
UpgradeStatus: Upgraded to xenial on 2016-01-12 (69 days ago)
UserGroups:

dmi.bios.date: 11/11/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0310JH
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA07:bd11/11/2015:svnDellInc.:pnXPS139343:pvr:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 13 9343
dmi.sys.vendor: Dell Inc.

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1553040, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.