gnome-control-center crashed with SIGSEGV in gtk_widget_set_visible()

[Till Kamppeter]

I opened the Thunderbolt page in the GNOME Control Center hoping to get a Lenovo USB-C Dock charging my Lenovo Thinkpad X1 Yoga. I clicked "Unlock" at the top and after entering my password I got the crash.

Starting GCC again and trying the same thing again I did not get a crash (but also not my laptop getting charged through the docking station).

ProblemType: Crash
DistroRelease: Ubuntu 18.10
Package: gnome-control-center 1:3.29.90-1~ubuntu1
ProcVersionSignature: Ubuntu 4.17.0-6.7-generic 4.17.9
Uname: Linux 4.17.0-6-generic x86_64
ApportVersion: 2.20.10-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Aug 5 21:20:41 2018
ExecutablePath: /usr/bin/gnome-control-center
InstallationDate: Installed on 2018-02-07 (179 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180207)
ProcCmdline: gnome-control-center
SegvAnalysis:
 Segfault happened at: 0x7fe03f71f07d <gtk_widget_set_visible+29>: cmp %rax,(%rdx)
 PC (0x7fe03f71f07d) ok
 source "%rax" ok
 destination "(%rdx)" (0x6974616572632f2f) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: gnome-control-center
StacktraceTop:
 gtk_widget_set_visible () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ()
 ffi_call_unix64 () at /usr/lib/x86_64-linux-gnu/libffi.so.6
 ffi_call () at /usr/lib/x86_64-linux-gnu/libffi.so.6
 g_cclosure_marshal_generic () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gnome-control-center crashed with SIGSEGV in gtk_widget_set_visible()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirt lpadmin lxd plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 gtk_widget_set_visible (widget=0x55f61a055340, visible=0) at ../../../../gtk/gtkwidget.c:9011
 als_enabled_state_changed (self=0x55f61a00c1b0) at ../panels/power/cc-power-panel.c:1057
 ffi_call_unix64 () at ../src/x86/unix64.S:76
 ffi_call (cif=cif@entry=0x7fff4e7f7ac0, fn=fn@entry=0x55f617982820 <als_enabled_state_changed>, rvalue=<optimized out>, avalue=avalue@entry=0x7fff4e7f79f0) at ../src/x86/ffi64.c:525
 g_cclosure_marshal_generic (closure=0x55f61a013da0, return_gvalue=0x0, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=<optimized out>, marshal_data=<optimized out>) at ../../../../gobject/gclosure.c:1496

[Sebastien Bacher (seb128)]

Thank you for your bug report, you were using a beta version at the time you reported the issue. It might have been fixed after that point, do you still see the problem in the stable 18.10?

[Sebastien Bacher (seb128)]

In fact it seems similar to bug #1797205 which was fixed in that SRU https://launchpad.net/ubuntu/+source/gnome-control-center/1:3.30.2-1ubuntu0.18.10.1

The corresponding error tracker entry is https://errors.ubuntu.com/problem/1b827a0e77b39432f5af7f10225483d1f0cdeb82