gnome-shell crashed with SIGSEGV in JS::Zone::isGCSweeping from js::gc::IsAboutToBeFinalized<js::gc::Cell>

[chris pollock]

Description: Ubuntu 16.04.2 LTS
Release: 16.04

apt-cache policy gnome-shell
gnome-shell:
  Installed: 3.18.5-0ubuntu0.3
  Candidate: 3.18.5-0ubuntu0.3
  Version table:
 *** 3.18.5-0ubuntu0.3 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     3.18.4-0ubuntu3 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages

Don't know what caused the crash. I was running software updater and Google Chrome was being updated.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: gnome-shell 3.18.5-0ubuntu0.3
ProcVersionSignature: Ubuntu 4.4.0-81.104-generic 4.4.67
Uname: Linux 4.4.0-81-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
CurrentDesktop: GNOME
Date: Mon Jun 26 16:08:09 2017
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2014-10-24 (976 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fa987bc465c: mov (%rax),%rcx
 PC (0x7fa987bc465c) ok
 source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rcx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
Title: gnome-shell crashed with SIGSEGV
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip kvm libvirtd lpadmin netdev plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 JS::Zone::isGCSweeping (this=<optimized out>) at ./gc/Zone.h:223
 js::gc::IsAboutToBeFinalized<js::gc::Cell> (thingp=thingp@entry=0x7fff75d57620) at /build/mozjs24-aUzIx7/mozjs24-24.2.0/js/src/gc/Marking.cpp:291
 js::gc::IsCellAboutToBeFinalized (thingp=thingp@entry=0x7fff75d57620) at /build/mozjs24-aUzIx7/mozjs24-24.2.0/js/src/gc/Marking.cpp:713
 IsAboutToBeFinalized (key=<optimized out>) at /build/mozjs24-aUzIx7/mozjs24-24.2.0/js/src/jsinfer.cpp:5515
 js::types::TypeSet::sweep (zone=0x32a3800, this=0x7ca9eb0) at /build/mozjs24-aUzIx7/mozjs24-24.2.0/js/src/jsinfer.cpp:6208

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu GNOME 16.04 (xenial) reached end-of-life on April, 2019

https://ubuntugnome.org/ubuntu-gnome-16-04-lts-is-here/
https://wiki.ubuntu.com/XenialXerus/ReleaseNotes/UbuntuGNOME

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in.