gnome-shell crashed with SIGSEGV in caribou_xadapter_keysym_to_modifier()

[starkus]

https://errors.ubuntu.com/problem/d779e0b96b418c7a6603e61c20116fdaea207934

---

Black screen after update and upgrade yesterday. Having had some terminal sessions but no luck. With the new updates arrived today the system booted to the Desktop. Rkhunter noticed some suspicious files, but I haven't had any time to look further.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: gnome-shell 3.18.4-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-16.32-generic 4.4.6
Uname: Linux 4.4.0-16-generic x86_64
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed Apr 6 15:40:50 2016
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

InstallationDate: Installed on 2016-04-02 (5 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323.1)
ProcCmdline: gnome-shell --mode=gdm
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/false
SegvAnalysis:
 Segfault happened at: 0x7f89348e9f87: movzbl 0xc(%rax),%ecx
 PC (0x7f89348e9f87) ok
 source "0xc(%rax)" (0x0000000c) not located in a known VMA region (needed readable region)!
 destination "%ecx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libcaribou.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 caribou_display_adapter_get_default () from /usr/lib/x86_64-linux-gnu/libcaribou.so.0
Title: gnome-shell crashed with SIGSEGV in g_object_new_valist()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 caribou_xadapter_keysym_to_modifier (keyval=65027, self=0x30f8c60) at xadapter.c:451
 caribou_xadapter_constructor (type=<optimized out>, n_construct_properties=<optimized out>, construct_properties=<optimized out>) at xadapter.c:1606
 g_object_new_internal () from /tmp/apport_sandbox_mijkMW/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new_valist () from /tmp/apport_sandbox_mijkMW/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new () from /tmp/apport_sandbox_mijkMW/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

Zero crashes after 17.10 so consider it fixed.