gsd-keyboard crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()

[dino99]

I was using chromium-browser when first a general freeze has happened.
Gnome-tweak-tool was not opened nor used previously. I have tried hitting Esc & other keyboard combinations to unlock the wayland session, but i only got that session crashing. And then relogin to a wayland session has failed, but a xorg one is ok. (not rebooted at time)

note:
the relogin problem is not met after a cold boot; so this seems a transitional issue due to some of the latest daily packages upgrade (needing a reboot to work as expected. Maybe that crash also is related to that fact)

Feedback: that problem has not been reproduced; so it seems that either the libinput or lintian previous upgrade have introduce a hidden need of reboot, disturbing the system then freeze & crash.

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-settings-daemon 3.26.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1
Uname: Linux 4.13.0-11-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Sep 21 19:01:49 2017
EcryptfsInUse: Yes
ExecutablePath: /usr/lib/gnome-settings-daemon/gsd-keyboard
ProcCmdline: /usr/lib/gnome-settings-daemon/gsd-keyboard
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f6714b10d81 <g_type_check_instance_is_fundamentally_a+49>: movzbl 0x14(%rdx),%eax
 PC (0x7f6714b10d81) ok
 source "0x14(%rdx)" (0x200000014) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-settings-daemon
StacktraceTop:
 g_type_check_instance_is_fundamentally_a () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_weak_ref_get () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: gsd-keyboard crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 g_type_check_instance_is_fundamentally_a (type_instance=type_instance@entry=0x55bebd461b50, fundamental_type=fundamental_type@entry=80) at ../../../../gobject/gtype.c:4026
 g_object_ref (_object=0x55bebd461b50) at ../../../../gobject/gobject.c:3180
 g_weak_ref_get (weak_ref=<optimized out>) at ../../../../gobject/gobject.c:4353
 g_settings_backend_invoke_closure (user_data=0x7f6704010dc0) at ../../../../gio/gsettingsbackend.c:263
 g_main_dispatch (context=0x55bebd4660d0) at ../../../../glib/gmain.c:3148

[Launchpad Janitor (janitor)]

[Expired for gnome-settings-daemon (Ubuntu) because there has been no activity for 60 days.]