gnome-shell crashed with SIGSEGV in g_str_hash() from g_hash_table_lookup() from update_user() from on_user_changed()

[Rachel Greenham]

https://errors.ubuntu.com/problem/3a817938d76d231fdfc8f698392fbf5e3724084f

Laptop was asleep (Dell XPS13 9370). I plugged it into a thunderbolt 3 dock (Caldigit TS3+). Keyboard rattling had no apparent effect at waking it up. Opened lid to see lock screen, keyboard still non-responsive. Unlocked using laptop's own keyboard. Logged in to see this and some other crashes being reported currently.

As description is what i was doing and it was the same for all crashes, am copy-pasting that part from first bug #1842412 then adding notes. In this case, it seems to have relaunched as session is continuing and gnome-shell is running.

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: Mon Sep 2 23:31:05 2019
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2018-09-11 (356 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180214)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 LANG=en_GB.UTF-8
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 SHELL=/usr/bin/zsh
 XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 3.33.91-1ubuntu1
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 __GI_raise (sig=<optimised out>) at ../sysdeps/unix/sysv/linux/raise.c:50
 ()
 <signal handler called> () at /lib/x86_64-linux-gnu/libc.so.6
 g_str_hash () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_hash_table_lookup () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: gnome-shell crashed with SIGSEGV in __GI_raise()
UpgradeStatus: Upgraded to eoan on 2019-07-16 (48 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
separator:

[Apport retracing service (apport)]

StacktraceTop:
 g_str_hash () from /tmp/apport_sandbox_5_hxd6zz/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_hash_table_lookup () from /tmp/apport_sandbox_5_hxd6zz/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 update_user (user=0x559d87087600, manager=0x559d864e41f0) at ../src/libaccountsservice/act-user-manager.c:1020
 on_user_changed (manager=0x559d864e41f0, user=0x559d87087600) at ../src/libaccountsservice/act-user-manager.c:664
 on_user_changed (user=0x559d87087600, manager=0x559d864e41f0) at ../src/libaccountsservice/act-user-manager.c:650

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

This crash looks suspiciously similar to bug 1841382.

[Daniel van Vugt (vanvugt)]

Also tracking in:
https://errors.ubuntu.com/problem/3a817938d76d231fdfc8f698392fbf5e3724084f