gnome-shell crashed with SIGSEGV in meta_window_get_monitor()

[Brian Neltner]

Same behavior for the last month, with shifting targets for the culprit this time. Whenever I turn on my monitor, the user session segfaults. I play music with the monitor off, and it continues playing up until the moment I turn back on the monitor.

dmesg output: gnome-shell[2039]: segfault at 18 ip 00007f868827b2d4 sp 00007ffcd12cbdf8 error 4 in libmutter-1.so.0.0.0[7f86881dc000+142000]

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.26.2-0ubuntu0.1
ProcVersionSignature: Ubuntu 4.13.0-19.22-generic 4.13.13
Uname: Linux 4.13.0-19-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.6
Architecture: amd64
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 16 09:10:59 2017
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:
 b'org.gnome.shell' b'favorite-apps' b"['org.gnome.Nautilus.desktop', 'org.gnome.Terminal.desktop', 'firefox.desktop', 'evolution.desktop', 'google-play-music-desktop-player.desktop', 'signal-desktop.desktop', 'org.gnome.Software.desktop', 'gnome-control-center.desktop', 'steam.desktop', 'org.gnome.Calculator.desktop', 'vmware-workstation.desktop', 'skypeforlinux.desktop', 'clementine.desktop', 'discord.desktop', 'eagle.desktop', 'arduino-arduinoide.desktop']"
 b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
 b'org.gnome.desktop.interface' b'clock-format' b"'12h'"
 b'org.gnome.desktop.interface' b'text-scaling-factor' b'1.25'
 b'org.gnome.desktop.interface' b'clock-show-date' b'true'
InstallationDate: Installed on 2017-05-28 (202 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f868827b2d4 <meta_window_get_monitor+4>: mov 0x18(%rax),%eax
 PC (0x7f868827b2d4) ok
 source "0x18(%rax)" (0x00000018) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 meta_window_get_monitor () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
 ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
 ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
 ?? () from /usr/lib/libgjs.so.0
 ?? () from /usr/lib/libgjs.so.0
Title: gnome-shell crashed with SIGSEGV in meta_window_get_monitor()
UpgradeStatus: Upgraded to artful on 2017-10-21 (55 days ago)
UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo

[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 #1724439, 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.