Application: systemsettings5 (5.13.0)

Qt Version: 5.11.0
Frameworks Version: 5.47.0
Operating System: Linux 4.16.13-2-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:

in system setting when ı click on font section  panel chrash happened

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa457c58840 (LWP 1668))]

Thread 19 (Thread 0x7fa3f2ffd700 (LWP 1701)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7fa3dffff700 (LWP 1698)):
#0  0x00007fa453299ea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fa44c521523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa44c52163e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa453bb5e64 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fa453b6185c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fa4539aaac9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fa4516a3559 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fa4539b4b95 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7fa3f37fe700 (LWP 1690)):
#0  0x00007fa453299ea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fa44c521523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa44c5218e2 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa3f8d9e348 in  () at /usr/lib/libgio-2.0.so.0
#4  0x00007fa44c549a2a in  () at /usr/lib/libglib-2.0.so.0
#5  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7fa3f3fff700 (LWP 1689)):
#0  0x00007fa453295934 in read () at /usr/lib/libc.so.6
#1  0x00007fa44c566ed1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa44c520ff8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa44c5214c6 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fa44c52163e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fa44c521692 in  () at /usr/lib/libglib-2.0.so.0
#6  0x00007fa44c549a2a in  () at /usr/lib/libglib-2.0.so.0
#7  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7fa3fadce700 (LWP 1684)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7fa3fb5ef700 (LWP 1683)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7fa409a93700 (LWP 1682)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7fa40a2b4700 (LWP 1681)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fa40bfff700 (LWP 1680)):
#0  0x00007fa453299ea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fa44c521523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa44c52163e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa453bb5e64 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fa453b6185c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fa4539aaac9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fa4516a3559 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fa4539b4b95 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fa413ba7700 (LWP 1678)):
#0  0x00007fa453295934 in read () at /usr/lib/libc.so.6
#1  0x00007fa44c566ed1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa44c520ff8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa44c5214c6 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fa44c52163e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fa453bb5e64 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fa453b6185c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fa4539aaac9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fa4516a3559 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fa4539b4b95 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fa4311b1700 (LWP 1677)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fa4319b2700 (LWP 1676)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fa4321b3700 (LWP 1675)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fa4329b4700 (LWP 1674)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fa4331b5700 (LWP 1673)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fa4339b6700 (LWP 1672)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fa4343c9700 (LWP 1671)):
#0  0x00007fa44eb88ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa439d0e0a4 in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fa439d0dd98 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fa441a0e700 (LWP 1670)):
#0  0x00007fa453295934 in read () at /usr/lib/libc.so.6
#1  0x00007fa44c566ed1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa44c520ff8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa44c5214c6 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fa44c52163e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fa453bb5e64 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fa453b6185c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fa4539aaac9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fa454005976 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007fa4539b4b95 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fa44eb83075 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fa4532a453f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fa457c58840 (LWP 1668)):
[KCrash Handler]
#6  0x00007fa4522b81d3 in XAddExtension () at /usr/lib/libX11.so.6
#7  0x00007fa3f216f12f in  () at /usr/lib/libXft.so.2
#8  0x00007fa3f216f63e in XftDefaultHasRender () at /usr/lib/libXft.so.2
#9  0x00007fa3f216fa79 in XftDefaultSubstitute () at /usr/lib/libXft.so.2
#10 0x00007fa3f217250f in XftFontMatch () at /usr/lib/libXft.so.2
#11 0x00007fa3f21726c5 in XftFontOpen () at /usr/lib/libXft.so.2
#12 0x00007fa3fa351042 in KFI::CFcEngine::getFont(int) () at /usr/lib/qt/plugins/kcms/kcm_fonts.so
#13 0x00007fa3fa351523 in KFI::CFcEngine::queryFont() () at /usr/lib/qt/plugins/kcms/kcm_fonts.so
#14 0x00007fa3fa351d09 in KFI::CFcEngine::getSizes() () at /usr/lib/qt/plugins/kcms/kcm_fonts.so
#15 0x00007fa3fa352e02 in KFI::CFcEngine::draw(QString const&, unsigned int, int, QColor const&, QColor const&, int, QString const&) () at /usr/lib/qt/plugins/kcms/kcm_fonts.so
#16 0x00007fa3fa34a56c in  () at /usr/lib/qt/plugins/kcms/kcm_fonts.so
#17 0x00007fa3fa34abf0 in  () at /usr/lib/qt/plugins/kcms/kcm_fonts.so
#18 0x00007fa451b222de in QQuickPixmap::load(QQmlEngine*, QUrl const&, QSize const&, QFlags<QQuickPixmap::Option>, QQuickImageProviderOptions const&) () at /usr/lib/libQt5Quick.so.5
#19 0x00007fa451c71870 in QQuickImageBase::load() () at /usr/lib/libQt5Quick.so.5
#20 0x00007fa45169667f in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /usr/lib/libQt5Qml.so.5
#21 0x00007fa45160ec2b in  () at /usr/lib/libQt5Qml.so.5
#22 0x00007fa45160f237 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/lib/libQt5Qml.so.5
#23 0x00007fa4516e6d07 in  () at /usr/lib/libQt5Qml.so.5
#24 0x00007fa4516e6e42 in QQmlDelegateModel::object(int, QQmlIncubator::IncubationMode) () at /usr/lib/libQt5Qml.so.5
#25 0x00007fa444a09ee1 in QQuickComboBox::textAt(int) const () at /usr/lib/libQt5QuickTemplates2.so.5
#26 0x00007fa444a0a09f in  () at /usr/lib/libQt5QuickTemplates2.so.5
#27 0x00007fa444a0a4b0 in  () at /usr/lib/libQt5QuickTemplates2.so.5
#28 0x00007fa444a5d8c6 in  () at /usr/lib/libQt5QuickTemplates2.so.5
#29 0x00007fa45168c226 in  () at /usr/lib/libQt5Qml.so.5
#30 0x00007fa45168cefc in  () at /usr/lib/libQt5Qml.so.5
#31 0x00007fa4516893fb in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#32 0x00007fa45165f913 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#33 0x00007fa4515f6104 in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#34 0x00007fa453b8c32f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#35 0x00007fa3fa34d2f8 in  () at /usr/lib/qt/plugins/kcms/kcm_fonts.so
#36 0x00007fa3fa34db96 in  () at /usr/lib/qt/plugins/kcms/kcm_fonts.so
#37 0x00007fa453b8d2e2 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#38 0x00007fa454ba250c in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#39 0x00007fa454b62984 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007fa454b6a25b in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#41 0x00007fa453b62bc9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#42 0x00007fa453b65c5c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#43 0x00007fa453bb6864 in  () at /usr/lib/libQt5Core.so.5
#44 0x00007fa44c521368 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#45 0x00007fa44c5215b1 in  () at /usr/lib/libglib-2.0.so.0
#46 0x00007fa44c52163e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#47 0x00007fa453bb5e49 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#48 0x00007fa446c03f72 in  () at /usr/lib/libQt5WaylandClient.so.5
#49 0x00007fa453b6185c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#50 0x00007fa453b69b56 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#51 0x000055c9d2511e5f in  ()
#52 0x00007fa4531cf06b in __libc_start_main () at /usr/lib/libc.so.6
#53 0x000055c9d2511eea in _start ()

Reported using DrKonqi