*** This bug is a duplicate of bug 1714745 ***
    https://bugs.launchpad.net/bugs/1714745

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 #1714745, 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.

** Attachment removed: "CoreDump.gz"
   
https://bugs.launchpad.net/bugs/1718709/+attachment/4954404/+files/CoreDump.gz

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https://bugs.launchpad.net/bugs/1718709/+attachment/4954406/+files/Disassembly.txt

** Attachment removed: "ProcMaps.txt"
   
https://bugs.launchpad.net/bugs/1718709/+attachment/4954411/+files/ProcMaps.txt

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https://bugs.launchpad.net/bugs/1718709/+attachment/4954412/+files/ProcStatus.txt

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https://bugs.launchpad.net/bugs/1718709/+attachment/4954413/+files/Registers.txt

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https://bugs.launchpad.net/bugs/1718709/+attachment/4954414/+files/Stacktrace.txt

** Attachment removed: "ThreadStacktrace.txt"
   
https://bugs.launchpad.net/bugs/1718709/+attachment/4954415/+files/ThreadStacktrace.txt

** This bug has been marked a duplicate of bug 1714745
   gnome-shell crashed with SIGSEGV in g_type_check_instance_cast() from 
shell_gtk_embed_window_created_cb() from g_closure_invoke() from 
signal_emit_unlocked_R()

** Information type changed from Private to Public

** Tags removed: need-amd64-retrace

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https://bugs.launchpad.net/bugs/1718709

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

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  Different stack trace compared to other bugs here.

  Stacktrace:
   #0  0x00007fe15d4dfe56 in g_type_check_instance_cast () at 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   #1  0x00007fe15dabb69c in  () at /usr/lib/gnome-shell/libgnome-shell.so
   #2  0x00007fe15d4b9f9d in g_closure_invoke () at 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   #3  0x00007fe15d4ccd5e in  () at 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   #4  0x00007fe15d4d5535 in g_signal_emit_valist () at 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   #5  0x00007fe15d4d5f4f in g_signal_emit () at 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   #6  0x00007fe15b72bc03 in  () at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
   #7  0x00007fe15b743b70 in meta_window_x11_new () at 
/usr/lib/x86_64-linux-gnu/libmutter-1.so.0
   #8  0x00007fe15b7385e9 in  () at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
   #9  0x00007fe15b7394cb in  () at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
   #10 0x00007fe15a9958af in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
   #11 0x00007fe15a995b99 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
   #12 0x00007fe15a95f9c0 in gdk_display_get_event () at 
/usr/lib/x86_64-linux-gnu/libgdk-3.so.0
   #13 0x00007fe15a995942 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
   #14 0x00007fe15d1e0f77 in g_main_context_dispatch () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
   #15 0x00007fe15d1e11b0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
   #16 0x00007fe15d1e14c2 in g_main_loop_run () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
   #17 0x00007fe15b719c1c in meta_run () at 
/usr/lib/x86_64-linux-gnu/libmutter-1.so.0
   #18 0x00005579eea3a307 in  ()
   #19 0x00007fe15b0ac1c1 in __libc_start_main (main=0x5579eea39f10, argc=1, 
argv=0x7fffac57ce88, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7fffac57ce78) at ../csu/libc-start.c:308

  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.26.0-0ubuntu1
  ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1
  Uname: Linux 4.13.0-11-generic x86_64
  ApportVersion: 2.20.7-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: GNOME
  Date: Thu Sep 21 12:28:30 2017
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  InstallationDate: Installed on 2014-12-01 (1024 days ago)
  InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 
(20141022.1)
  ProcCmdline: /usr/bin/gnome-shell
  SegvAnalysis:
   Segfault happened at: 0x7fe15d4dfe56 <g_type_check_instance_cast+22>:        
mov    (%rdi),%rdi
   PC (0x7fe15d4dfe56) ok
   source "(%rdi)" (0x008041ed) not located in a known VMA region (needed 
readable region)!
   destination "%rdi" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
   g_type_check_instance_cast () at 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   () at /usr/lib/gnome-shell/libgnome-shell.so
   g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  Title: gnome-shell crashed with SIGSEGV in g_type_check_instance_cast()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dip disk docker fax libvirt libvirtd lpadmin lxd 
plugdev sambashare sudo vboxusers

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