gnome-shell crashed with SIGSEGV in g_dbus_connection_signal_unsubscribe()

[Oliver Gerhardt]

Crashed after switching between Gnome3 and Unity from Lockscreen.

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.26.1-0ubuntu5
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CurrentDesktop: GNOME-Greeter:GNOME
Date: Thu Nov 2 22:56:28 2017
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

ProcCmdline: /usr/bin/gnome-shell
SegvAnalysis:
 Segfault happened at: 0x7f7a2fe206f2 <g_dbus_connection_signal_unsubscribe+34>: cmp %rax,(%rdx)
 PC (0x7f7a2fe206f2) ok
 source "%rax" ok
 destination "(%rdx)" (0x00001e01) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 g_dbus_connection_signal_unsubscribe () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/libgjs.so.0
 ?? () from /usr/lib/libgjs.so.0
Title: gnome-shell crashed with SIGSEGV in g_dbus_connection_signal_unsubscribe()
UpgradeStatus: Upgraded to artful on 2017-10-23 (12 days ago)
UserGroups:

[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 #1703300, 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.