gnome-shell crashed with SIGSEGV in clutter_input_device_xi2_get_current_tool → clutter_device_manager_xi2_translate_event → clutter_backend_real_translate_event → clutter_x11_handle_event → handle_host_xevent

[Zhenqing Hu]

https://errors.ubuntu.com/problem/4da1b43d4e01e82127276108c1e6c2169c68410f

ProblemType: Crash
DistroRelease: Ubuntu 18.10
Package: gnome-shell 3.28.3-0ubuntu2
ProcVersionSignature: Ubuntu 4.17.0-4.5-generic 4.17.3
Uname: Linux 4.17.0-4-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.10-0ubuntu7
Architecture: amd64
CurrentDesktop: GNOME-Greeter:GNOME
Date: Wed Jul 25 21:54:39 2018
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

InstallationDate: Installed on 2018-06-18 (37 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcCmdline: /usr/bin/gnome-shell
SegvAnalysis:
 Segfault happened at: 0x7f3325479e50: mov 0x128(%rdi),%rax
 PC (0x7f3325479e50) ok
 source "0x128(%rdi)" (0x00000128) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/mutter/libmutter-clutter-2.so
 ?? () from /usr/lib/x86_64-linux-gnu/mutter/libmutter-clutter-2.so
 ?? () from /usr/lib/x86_64-linux-gnu/mutter/libmutter-clutter-2.so
 clutter_x11_handle_event () from /usr/lib/x86_64-linux-gnu/mutter/libmutter-clutter-2.so
 ?? () from /usr/lib/x86_64-linux-gnu/libmutter-2.so.0
Title: gnome-shell crashed with SIGSEGV in clutter_x11_handle_event()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 clutter_input_device_xi2_get_current_tool (device=device@entry=0x0) at x11/clutter-input-device-xi2.c:292
 clutter_device_manager_xi2_translate_event (translator=<optimized out>, native=<optimized out>, event=0x55f5fd65a970) at x11/clutter-device-manager-xi2.c:1625
 clutter_backend_real_translate_event (backend=<optimized out>, native=0x7ffd82ef0b60, event=0x55f5fd65a970) at clutter-backend.c:597
 clutter_x11_handle_event (xevent=xevent@entry=0x7ffd82ef0b60) at x11/clutter-event-x11.c:200
 handle_host_xevent (event=0x7ffd82ef0b60, backend=0x55f5fb776110) at backends/x11/meta-backend-x11.c:383

[Daniel van Vugt (vanvugt)]

It appears a few people experience the same crash:
https://errors.ubuntu.com/problem/4da1b43d4e01e82127276108c1e6c2169c68410f

in 17.04, 17.10, 18.04 and 18.10.

[Launchpad Janitor (janitor)]

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