gnome-shell crashed with SIGSEGV in meta_window_get_window_type(window=NULL) from meta_window_actor_queue_destroy() from meta_compositor_real_remove_window() from meta_window_unmanage() from meta_display_unmanage_windows()

[Florent Mertens]

https://errors.ubuntu.com/problem/0f9ebdf291c30c238c6f29d22b7d503ef8910bdd

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Crashed after I tried to restart the shell with the 'r' command.

ProblemType: Crash
DistroRelease: Ubuntu 22.04
Package: gnome-shell 42~beta-1ubuntu3
ProcVersionSignature: Ubuntu 5.15.0-23.23-generic 5.15.27
Uname: Linux 5.15.0-23-generic x86_64
ApportVersion: 2.20.11-0ubuntu79
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 22 10:59:42 2022
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2022-02-25 (24 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
ProcCmdline: /usr/bin/gnome-shell
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions: mutter-common 42~beta-1ubuntu2
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 meta_window_get_window_type () from /lib/x86_64-linux-gnu/libmutter-10.so.0
 ?? () from /lib/x86_64-linux-gnu/libmutter-10.so.0
 ?? () from /lib/x86_64-linux-gnu/libmutter-10.so.0
 meta_display_close () from /lib/x86_64-linux-gnu/libmutter-10.so.0
 shell_global_reexec_self () from /usr/lib/gnome-shell/libgnome-shell.so
Title: gnome-shell crashed with SIGSEGV in meta_window_get_window_type()
UpgradeStatus: Upgraded to jammy on 2022-03-14 (7 days ago)
UserGroups: sudo
separator:

[Apport retracing service (apport)]

StacktraceTop:
 meta_window_get_window_type (window=0x0) at ../src/core/window.c:7104
 meta_window_actor_queue_destroy (self=0x55775f0d0f30) at ../src/compositor/meta-window-actor.c:794
 meta_compositor_real_remove_window (compositor=<optimized out>, window=<optimized out>) at ../src/compositor/compositor.c:524
 meta_window_unmanage (window=0x55775f0c1be0, timestamp=<optimized out>) at ../src/core/window.c:1467
 meta_display_unmanage_windows (timestamp=0, display=0x55775d504190) at ../src/core/display.c:2702

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

Tracking in:
https://errors.ubuntu.com/problem/0f9ebdf291c30c238c6f29d22b7d503ef8910bdd

[Daniel van Vugt (vanvugt)]

Let's _assume_ this is fixed in 42.2 as suggested upstream: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/5271#note_1473888

[Daniel van Vugt (vanvugt)]

Nope, still crashing in 42.2.

Although all instances I can find are gnome-shell 42.2 with libmutter 42.1 or earlier. Maybe this is still fixed.

[Daniel van Vugt (vanvugt)]

Yes all the remaining crashes in gnome-shell 42.2 are from mutter 42.0 or 41.1. So the fix is indeed in mutter 42.2.