gnome-shell crashed with SIGSEGV in _XSend() from XQueryExtension() from InitDisplayInfoEntry() from __glXLookupDisplay() from CommonMakeCurrent() from cogl_onscreen_glx_dispose() from g_object_unref() from clutter_stage_view_finalize()

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding gnome-shell. This problem was most recently seen with package version 40.2-1ubuntu1, the problem page at https://errors.ubuntu.com/problem/11d90a7db51d11df7d99a6ef6e5aa31eb678d273 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

I think this is the crash being reported in impish live sessions but the core files keep getting truncated so it's hard to tell. See also bug 1940532.

[Launchpad Janitor (janitor)]

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

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1942031

[Bernard Stafford (bernard010)]

Daily Build 20210830 UEFI Live Test flashed to USB.
Gnome-Shell Crashed
Package: gnome-shell 40.2-1ubuntu1
PackageArchitecture: amd64
SourcePackage: gnome-shell
UnreportableReason:
Invalid core dump: BFD: warning: /tmp/apport_core_074ewlnx is truncated: expected core file size >= 412581888, found: 1114112
warning: Can't open file /memfd:pulseaudio (deleted) during file-backed mapping note processing
warning: Can't open file /memfd:xshmfence (deleted) during file-backed mapping note processing
_MarkForUpload: True
The tail of the crash report above.
sudo cat whoopsie-id
536703e3f7ef2aa189fc1f47606c7c72a894ee297884b2903353ab5441b9c4c43855b1c474e1972f3dc9ac8e5f2d5d1c7767a23f88ac587ab1ae98ed6a9202efubuntu@ubuntu:/var/lib/whoopsie$

[Bernard Stafford (bernard010)]

Adding the liveboot.txt file for daily build 20210830

[Akbarkhon Variskhanov (kbar)]

I believe this bug needs to be mentioned here: https://discourse.ubuntu.com/t/impish-indri-release-notes/21951

in the "Ubuntu Desktop" category.

[Daniel van Vugt (vanvugt)]

Upstream bugs:

https://gitlab.gnome.org/GNOME/mutter/-/issues/1835
https://gitlab.gnome.org/GNOME/mutter/-/issues/1851

appear to be the same issue.

[Brian Murray (brian-murray)]

This has been added to the release notes for Impish Indri.

[Daniel van Vugt (vanvugt)]

It seems to be any gnome-shell Xorg session hitting this crash on exit... but for most people a Xorg session will only ever be used in the live image.

[Akbarkhon Variskhanov (kbar)]

Still affects libX11 in Live session (build 20210929), which I am currently testing.

Same thing:

segfault at 0 ip 00007f-------77f sp 00007ff--------0 error 4 in libX11.so.6.4.0[7f-------000+8c000]

Can attach detailed logs if required.

[Daniel van Vugt (vanvugt)]

Yes the function at the top of the stack is in libX11, but libX11 has nothing to do with the root cause of the crash which is just gnome-shell.

[Daniel van Vugt (vanvugt)]

Workaround/fix proposed in https://salsa.debian.org/gnome-team/gnome-shell/-/merge_requests/57

[Daniel van Vugt (vanvugt)]

Here's a patch that stops the crashes, many crashes.

[Daniel van Vugt (vanvugt)]

https://salsa.debian.org/gnome-team/gnome-shell/-/commit/6e18ad3e36

https://launchpadlibrarian.net/562041828/gnome-shell_40.5-1ubuntu2_source.changes

[Launchpad Janitor (janitor)]

This bug was fixed in the package gnome-shell - 40.5-1ubuntu2

---------------
gnome-shell (40.5-1ubuntu2) impish; urgency=medium

  [ Daniel van Vugt ]
  * debian/patches: Avoid full meta context finalization.
    To workaround (prevent) shutdown crashes (LP: #1936826, #1942031, #1942121,
    LP: #1943406, #1944054, #1945010, #1945116, #1944388)

 -- Marco Trevisan (Treviño) <email address hidden> Tue, 05 Oct 2021 04:52:11 +0200

[Akbarkhon Variskhanov (kbar)]

Ubuntu Desktop amd64 daily-live 20211006

gnome-shell 40.5-1ubuntu2

gnome-shell --sm-disable --mode=ubiquity

crash with signal 11

Shall I include more logs?

[Daniel van Vugt (vanvugt)]

Not all gnome-shell crashes are this one, and in fact there are zero reports of this one (so far) after 40.5-1ubuntu1 in https://errors.ubuntu.com/problem/11d90a7db51d11df7d99a6ef6e5aa31eb678d273

Please open a new bug for each crash file using the ubuntu-bug command.