gnome-shell crashed with SIGSEGV in __GI___libc_free() from g_free() from meta_wayland_finalize() from meta_finalize() from meta_run()

[Jean-Baptiste Lallement]

https://errors.ubuntu.com/problem/b39dded3eb3a2559d54e26e7fa6434fb8c0f84e8

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Ubuntu Artful Desktop up to date

Test Case
1. Login with wayland
2. Logout
3. Login with X
4. Logout
5. Repeat from step 1 until this crash happens

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.25.91-0ubuntu3
ProcVersionSignature: Ubuntu 4.12.0-12.13-generic 4.12.8
Uname: Linux 4.12.0-12-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 5 16:28:07 2017
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:
 b'org.gnome.shell' b'had-bluetooth-devices-setup' b'true'
 b'org.gnome.shell' b'favorite-apps' b"['org.gnome.Nautilus.desktop', 'firefox.desktop', 'google-chrome-beta.desktop', 'streamtuner2.desktop']"
 b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
InstallationDate: Installed on 2014-07-23 (1140 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f5f3bde9d52 <free+66>: mov (%rax),%rdi
 PC (0x7f5f3bde9d52) ok
 source "(%rax)" (0x1814000000) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 free () from /lib/x86_64-linux-gnu/libc.so.6
 meta_run () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
 ?? ()
 __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
 ?? ()
Title: gnome-shell crashed with SIGSEGV in free()
UpgradeStatus: Upgraded to artful on 2017-06-13 (84 days ago)
UserGroups: adm dialout libvirt lpadmin lxd sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 __GI___libc_free (mem=0x18160562e9) at malloc.c:2984
 g_free (mem=<optimized out>) at ../../../../glib/gmem.c:189
 meta_wayland_finalize () at wayland/meta-wayland.c:409
 meta_finalize () at core/main.c:301
 meta_run () at core/main.c:650

[Daniel van Vugt (vanvugt)]

Upstream mentioned that the crashes in meta_finalize are fixed here:
https://git.gnome.org/browse/mutter/commit/?id=807658e9725bd8d3693e3a7178c72546b8835e63

But the bug mentioned in that commit seems to be the wrong bug (covers multiple issues/fixes).

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Fix Released. This crash was never seen outside of release 17.10.