gnome-shell crashed with SIGSEGV in meta_get_window_actors() (especially when using extension dash-to-panel)

[Christian Heitjan]

https://errors.ubuntu.com/problem/b78cc2b67b55906dfc6233d8d5299bcf7e4b896a

---

The error appeared immediately after logging in.

ProblemType: Crash
DistroRelease: Ubuntu 19.10
Package: gnome-shell 3.33.91-1ubuntu1
ProcVersionSignature: Ubuntu 5.2.0-15.16-generic 5.2.9
Uname: Linux 5.2.0-15-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Sun Sep 8 17:12:33 2019
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2019-09-08 (0 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190830)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 LANG=de_DE.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 3.33.91-1ubuntu1
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 meta_get_window_actors () from /lib/x86_64-linux-gnu/libmutter-5.so.0
 shell_global_get_window_actors () from /usr/lib/gnome-shell/libgnome-shell.so
 ffi_call_unix64 () from /lib/x86_64-linux-gnu/libffi.so.6
 ffi_call () from /lib/x86_64-linux-gnu/libffi.so.6
 ?? () from /lib/libgjs.so.0
Title: gnome-shell crashed with SIGSEGV in meta_get_window_actors()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
separator:

[Apport retracing service (apport)]

StacktraceTop:
 meta_get_window_actors (display=0x561cf9296020) at ../src/compositor/compositor.c:278
 shell_global_get_window_actors () from /tmp/apport_sandbox_v7bw9_q0/usr/lib/gnome-shell/libgnome-shell.so
 ffi_call_unix64 () at ../src/x86/unix64.S:76
 ffi_call (cif=<optimized out>, fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>) at ../src/x86/ffi64.c:525
 ?? ()

[Daniel van Vugt (vanvugt)]

There don't seem to be any other reports of this crash that I can find...

Please start by uninstalling extension '<email address hidden>' (don't just disable it) and then tell us if the crash happens again. We need to exclude third party extensions because we find they cause a significant proportion of bugs. And uninstalling them fixes the problem very often.

[Christian Heitjan (heitjan)]

Hello,

when i start a new wayland session, all extensions are disabled (see
screenshot). Only when I reactivate the extensions, the Dash-To-Panel
will be loaded.

The reported error did not appear again - neither under X nor under
wayland.

Am Mo, 9. Sep, 2019 um 4:34 VORMITTAGS schrieb Daniel van Vugt
<email address hidden>:
> There don't seem to be any other reports of this crash that I can
> find...
>
> Please start by uninstalling extension 'dash-to-
> <email address hidden>' (don't just disable it) and then tell us if
> the crash happens again. We need to exclude third party extensions
> because we find they cause a significant proportion of bugs. And
> uninstalling them fixes the problem very often.
>
>
> ** Changed in: gnome-shell (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the
> bug
> report.
> https://bugs.launchpad.net/bugs/1843182
>
> Title:
> gnome-shell crashed with SIGSEGV in meta_get_window_actors()
>
> Status in gnome-shell package in Ubuntu:
> Incomplete
>
> Bug description:
> The error appeared immediately after logging in.
>
> ProblemType: Crash
> DistroRelease: Ubuntu 19.10
> Package: gnome-shell 3.33.91-1ubuntu1
> ProcVersionSignature: Ubuntu 5.2.0-15.16-generic 5.2.9
> Uname: Linux 5.2.0-15-generic x86_64
> ApportVersion: 2.20.11-0ubuntu7
> Architecture: amd64
> CrashCounter: 1
> CurrentDesktop: ubuntu:GNOME
> Date: Sun Sep 8 17:12:33 2019
> DisplayManager: gdm3
> ExecutablePath: /usr/bin/gnome-shell
> InstallationDate: Installed on 2019-09-08 (0 days ago)
> InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64
> (20190830)
> ProcCmdline: /usr/bin/gnome-shell
> ProcEnviron:
> LANG=de_DE.UTF-8
> PATH=(custom, no user)
> SHELL=/bin/bash
> XDG_RUNTIME_DIR=<set>
> RelatedPackageVersions: mutter-common 3.33.91-1ubuntu1
> Signal: 11
> SourcePackage: gnome-shell
> StacktraceTop:
> meta_get_window_actors () from
> /lib/x86_64-linux-gnu/libmutter-5.so.0
> shell_global_get_window_actors () from
> /usr/lib/gnome-shell/libgnome-shell.so
> ffi_call_unix64 () from /lib/x86_64-linux-gnu/libffi.so.6
> ffi_call () from /lib/x86_64-linux-gnu/libffi.so.6
> ?? () from /lib/libgjs.so.0
> Title: gnome-shell crashed with SIGSEGV in meta_get_window_actors()
> UpgradeStatus: No upgrade log present (probably fresh install)
> UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
> separator:
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1843182/+subscriptions

[Daniel van Vugt (vanvugt)]

If the problem reappears then please be sure to uninstall/delete the extension. Just disabling extensions isn't enough to stop them from interfering and causing bugs.

If everything is OK and no further comments are added here in 60 days then the bug will close automatically.

[Daniel van Vugt (vanvugt)]

Interesting duplicate bug 1844478 also has dash-to-panel.

[Daniel van Vugt (vanvugt)]

Zero bug reports after GNOME 3.34, meaning it is fixed in Ubuntu 20.04.