apport-gtk crashed with SIGSEGV in gtk_widget_translate_coordinates()

[Colin Law]

Happened after reboot on Wily alpha

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: apport-gtk 2.20-0ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
Uname: Linux 4.4.0-9-generic x86_64
ApportLog:
 ERROR: apport (pid 3535) Fri Mar 4 09:10:55 2016: called for pid 2976, signal 11, core limit 0
 ERROR: apport (pid 3535) Fri Mar 4 09:10:55 2016: script: /usr/share/apport/apport-gtk, interpreted by /usr/bin/python3.5 (command line "/usr/bin/python3 /usr/share/apport/apport-gtk")
 ERROR: apport (pid 3535) Fri Mar 4 09:10:55 2016: is_closing_session(): no DBUS_SESSION_BUS_ADDRESS in environment
 ERROR: apport (pid 3535) Fri Mar 4 09:11:27 2016: wrote report /var/crash/_usr_share_apport_apport-gtk.0.crash
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CrashReports:
 640:0:115:10458005:2016-03-04 09:11:26.761718034 +0000:2016-03-04 09:11:27.761718034 +0000:/var/crash/_usr_share_apport_apport-gtk.0.crash
 640:0:115:689043:2016-03-04 09:08:36.745151996 +0000:2016-03-04 09:08:37.745151996 +0000:/var/crash/resolvconf.0.crash
 640:0:115:687977:2016-03-04 09:08:48.985245227 +0000:2016-03-04 09:08:49.985245227 +0000:/var/crash/libc-bin.0.crash
 600:0:115:677390:2016-03-02 21:58:50.807320356 +0000:2016-03-02 21:58:51.807320356 +0000:/var/crash/software-center.0.crash
Date: Fri Mar 4 09:10:55 2016
ExecutablePath: /usr/share/apport/apport-gtk
InstallationDate: Installed on 2015-10-23 (135 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
InterpreterPath: /usr/bin/python3.5
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gtk
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_GB.UTF-8
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0x7f00de53ee90 <gtk_widget_translate_coordinates+160>: mov (%r14),%rax
 PC (0x7f00de53ee90) ok
 source "(%r14)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: apport
StacktraceTop:
 gtk_widget_translate_coordinates () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 gtk_event_controller_handle_event () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
Title: apport-gtk crashed with SIGSEGV in gtk_widget_translate_coordinates()
UpgradeStatus: Upgraded to xenial on 2015-10-31 (126 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 #1539995, 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.