ukui-control-center crashed with SIGSEGV in QMLScreen::setConfig()

[Joshua Peisach]

I launched the Control Center from the start menu, and it didn't open, instead I saw it for a second then it went away. Made it harder to test since I can't read Chinese.

ProblemType: Crash
DistroRelease: Ubuntu Kylin 20.04
Package: ukui-control-center 2.0.1.1-2 [origin: Ubuntu]
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu22
Architecture: amd64
CasperVersion: 1.442
CrashCounter: 1
CurrentDesktop: UKUI
Date: Sun Apr 5 15:09:49 2020
ExecutablePath: /usr/bin/ukui-control-center
LiveMediaBuild: Ubuntu-Kylin 20.04 LTS "Focal Fossa" - Beta amd64 (20200404)
ProcCmdline: /usr/bin/ukui-control-center
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f043eb08438 <_ZN9QMLScreen9setConfigERK14QSharedPointerIN7KScreen6ConfigEE+24>: mov 0x30(%rdi),%r13
 PC (0x7f043eb08438) ok
 source "0x30(%rdi)" (0x00000030) not located in a known VMA region (needed readable region)!
 destination "%r13" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: ukui-control-center
StacktraceTop:
 QMLScreen::setConfig(QSharedPointer<KScreen::Config> const&) () from /usr/lib/control-center/pluginlibs/libdisplay.so
 Widget::setConfig(QSharedPointer<KScreen::Config> const&) () from /usr/lib/control-center/pluginlibs/libdisplay.so
 ?? () from /usr/lib/control-center/pluginlibs/libdisplay.so
 QMetaObject::activate(QObject*, int, int, void**) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
 KScreen::ConfigOperation::finished(KScreen::ConfigOperation*) () from /lib/x86_64-linux-gnu/libKF5Screen.so.7
Title: ukui-control-center crashed with SIGSEGV in QMLScreen::setConfig()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
XsessionErrors:
 (process:2306): GLib-GIO-CRITICAL **: 15:02:10.241: _g_file_info_get_attribute_value: assertion 'G_IS_FILE_INFO (info)' failed
 (process:2306): GLib-GObject-CRITICAL **: 15:02:10.241: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
 (ukwm:2196): ukwm-CRITICAL **: 15:08:11.456: meta_window_set_stack_position_no_sync: assertion 'position >= 0' failed
 (ukwm:2196): ukwm-CRITICAL **: 15:11:11.590: meta_window_set_stack_position_no_sync: assertion 'position >= 0' failed
separator:

[Apport retracing service (apport)]

StacktraceTop:
 QMLScreen::setConfig(QSharedPointer<KScreen::Config> const&) () from /tmp/apport_sandbox_0b118jt8/usr/lib/control-center/pluginlibs/libdisplay.so
 Widget::setConfig(QSharedPointer<KScreen::Config> const&) () from /tmp/apport_sandbox_0b118jt8/usr/lib/control-center/pluginlibs/libdisplay.so
 QtPrivate::QFunctorSlotObject<DisplaySet::DisplaySet()::{lambda(KScreen::ConfigOperation*)#1}, 1, QtPrivate::List<KScreen::ConfigOperation*>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () from /tmp/apport_sandbox_0b118jt8/usr/lib/control-center/pluginlibs/libdisplay.so
 QtPrivate::QSlotObjectBase::call (a=0x7ffd8172cf90, r=0x55b274b37940, this=0x55b274a84fb0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
 QMetaObject::activate (sender=0x55b274b37940, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3783

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1870934

[liumin (liumin0322)]

Thanks for your feedback, we have fixed this bug and are uploading it to upstream.

[handsome_feng (feng-kylin)]

Hi, Thanks a lot for you test! This has been fixed in the version 2.0.2-1, waiting it migrate from Debian to Ubuntu now. :)

[Launchpad Janitor (janitor)]

This bug was fixed in the package ukui-control-center - 2.0.3-1

---------------
ukui-control-center (2.0.3-1) unstable; urgency=medium

  * New upstream bugfix release:
    - Fix the wrong return value of QGsettings.
    - Fix that failed to reset the theme.
    - Fix the error when open display module.
    - Fix that the settings been reset on multi-screen.
    - Fix that the user information display incomplete.
    - Fix a memory leak.
    - Remove the useless component.
    - Fix that can't switch to the submodule when it already opened.
    - Fix the wrong default value of power plan.
    - Avoid crash when set default app.
    - Fix the error when create user.
    - Fix the spelling errors in zh_CN.ts.
    - Fix that the function of adjust brightness didn't work.
    - Fix the error when set shortcuts.
    - Fix the error when the path of background contains chinese.
  * debian/control:
    - Add qml-module-qtquick-controls to depends. (LP: #1870934)
    - Remove the unused build-depends libdbus-glib-1-dev.
      (Closes: #955851)

 -- handsome_feng <email address hidden> Tue, 07 Apr 2020 00:13:01 +0800