*** This bug is a duplicate of bug 1723705 ***
    https://bugs.launchpad.net/bugs/1723705

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 #1723705, 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.

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** This bug has been marked a duplicate of bug 1723705
   gnome-shell crashed with SIGSEGV in 
g_type_check_instance_is_fundamentally_a() from g_value_set_object() from 
object_get_property()

** Information type changed from Private to Public

** Tags removed: need-amd64-retrace

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https://bugs.launchpad.net/bugs/1745453

Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a()

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  Crashed either before the lock screen kicked in or during the lock
  screen.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: gnome-shell 3.26.2-0ubuntu2
  ProcVersionSignature: Ubuntu 4.13.0-31.34-generic 4.13.13
  Uname: Linux 4.13.0-31-generic x86_64
  ApportVersion: 2.20.8-0ubuntu6
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Thu Jan 25 20:09:30 2018
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  InstallationDate: Installed on 2016-10-25 (456 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160720)
  ProcCmdline: /usr/bin/gnome-shell
  ProcEnviron:
   LANGUAGE=en_ZA:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_ZA.UTF-8
   SHELL=/usr/bin/zsh
  SegvAnalysis:
   Segfault happened at: 0x7f90d0879d01 
<g_type_check_instance_is_fundamentally_a+49>:  movzbl 0x14(%rdx),%eax
   PC (0x7f90d0879d01) ok
   source "0x14(%rdx)" (0x100000014) not located in a known VMA region (needed 
readable region)!
   destination "%eax" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
   g_type_check_instance_is_fundamentally_a () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_value_set_object () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_object_get_property () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   ?? () from /usr/lib/libgjs.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
  Title: gnome-shell crashed with SIGSEGV in 
g_type_check_instance_is_fundamentally_a()
  UpgradeStatus: Upgraded to bionic on 2018-01-24 (0 days ago)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sbuild sudo vboxusers

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