[Bug 1842439] Re: apport-gtk crashed with SIGSEGV in _gtk_settings_get_screen(settings=0x0)

[Francis Ginther]

** Tags added: id-5e4ecf76b760f78c1c9f34d6

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https://bugs.launchpad.net/bugs/1842439

Title:
  apport-gtk crashed with SIGSEGV in
  _gtk_settings_get_screen(settings=0x0)

Status in apport package in Ubuntu:
  Confirmed
Status in apport source package in Focal:
  Confirmed

Bug description:
  https://errors.ubuntu.com/problem/815a179408135a894bbb5921adef3757563c75c5

  ---

  Session suddenly stopped and came back to login screen, all opened
  windows lost.

  ProblemType: Crash
  DistroRelease: Ubuntu 19.10
  Package: apport-gtk 2.20.11-0ubuntu7
  ProcVersionSignature: Ubuntu 5.2.0-15.16-generic 5.2.9
  Uname: Linux 5.2.0-15-generic x86_64
  ApportVersion: 2.20.11-0ubuntu7
  Architecture: amd64
  CrashReports:
   640:1000:117:7292709:2019-09-03 16:20:13.909392833 +0200:2019-09-03 16:20:14.909392833 +0200:/var/crash/_usr_share_apport_apport-gtk.1000.crash
   640:1000:117:48937942:2019-09-03 16:20:11.681426286 +0200:2019-09-03 16:20:12.681426286 +0200:/var/crash/_usr_bin_gnome-shell.1000.crash
   640:1000:117:32054:2019-08-27 17:39:07.125607490 +0200:2019-08-28 12:36:17.087672961 +0200:/var/crash/_usr_bin_dbus-daemon.1000.crash
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Sep  3 16:20:13 2019
  ExecutablePath: /usr/share/apport/apport-gtk
  InstallationDate: Installed on 2018-06-16 (443 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180611)
  InterpreterPath: /usr/bin/python3.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gtk
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  Python3Details: /usr/bin/python3.7, Python 3.7.4, python3-minimal, 3.7.3-1
  PythonDetails: /usr/bin/python2.7, Python 2.7.16+, python-minimal, 2.7.16-1
  SegvAnalysis:
   Segfault happened at: 0x7f532548f8c4:	mov    0x18(%rdi),%rax
   PC (0x7f532548f8c4) ok
   source "0x18(%rdi)" (0x00000018) not located in a known VMA region (needed readable region)!
   destination "%rax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: apport
  StacktraceTop:
   ?? () 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
   ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
  Title: apport-gtk crashed with SIGSEGV
  UpgradeStatus: Upgraded to eoan on 2019-06-10 (84 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  separator:

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