Bug 404103

Application: systemsettings5 (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.18.0-14-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
- What I was doing when the application crashed:
Just that, I opened the system settings them app style then windows decoration and the app crashed.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0b2f408840 (LWP 3831))]

Thread 9 (Thread 0x7f0b0ac8c700 (LWP 3951)):
#0  0x00007f0b32903fb7 in g_main_context_release () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0b32904e06 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0b32904f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0b35cf815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0b35ca516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0b35af40b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0b34db51f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f0b35afdc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0b33c7a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f0b357e1def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f0b0becd700 (LWP 3950)):
#0  0x00007f0b32901e00 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0b32904308 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0b32904d7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0b32904f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0b35cf815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0b35ca516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0b35af40b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0b34db51f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f0b35afdc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f0b33c7a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f0b357e1def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f0b11927700 (LWP 3838)):
#0  0x00007f0b357d0f64 in __GI___libc_read (fd=18, buf=0x7f0b11926b20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f0b3294a180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0b3290491f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0b32904df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0b32904f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0b35cf815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0b35ca516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0b35af40b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0b34db51f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f0b35afdc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f0b33c7a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f0b357e1def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f0b13fff700 (LWP 3837)):
#0  0x00007f0b35cf84c1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f0b32904379 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0b32904d7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0b32904f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0b35cf815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0b35ca516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0b35af40b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0b34db51f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f0b35afdc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f0b33c7a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f0b357e1def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f0b1da35700 (LWP 3836)):
#0  0x00007f0b357d0f64 in __GI___libc_read (fd=13, buf=0x7f0b1da34b20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f0b3294a180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0b3290491f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0b32904df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0b32904f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0b35cf815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0b35ca516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0b35af40b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0b34db51f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f0b35afdc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f0b33c7a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f0b357e1def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f0b2564f700 (LWP 3834)):
#0  0x00007f0b33c802eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560d4e485768) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f0b33c802eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x560d4e485718, cond=0x560d4e485740) at pthread_cond_wait.c:502
#2  0x00007f0b33c802eb in __pthread_cond_wait (cond=0x560d4e485740, mutex=0x560d4e485718) at pthread_cond_wait.c:655
#3  0x00007f0b25d0046b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f0b25d001d7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f0b33c7a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f0b357e1def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f0b27df6700 (LWP 3833)):
#0  0x00007f0b3290438d in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0b32904d7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0b32904f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0b35cf815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0b35ca516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0b35af40b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0b35fb1545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f0b35afdc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0b33c7a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f0b357e1def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f0b2db2b700 (LWP 3832)):
#0  0x00007f0b357d56d9 in __GI___poll (fds=0x7f0b2db2ac78, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f0b33c38917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f0b33c3a53a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f0b2eacd159 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f0b35afdc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0b33c7a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f0b357e1def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f0b2f408840 (LWP 3831)):
[KCrash Handler]
#6  0x00007f0b35b69454 in QtSharedPointer::ExternalRefCountData::getAndRef(QObject const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0b34d8c594 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f0b34da1cb4 in QV4::QmlListWrapper::toVariant() const () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f0b34c26902 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f0b34c269d4 in QV4::ExecutionEngine::toVariant(QV4::Value const&, int, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f0b34d9c5e5 in QQmlBinding::slowWrite(QQmlPropertyData const&, QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f0b34d9e351 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f0b34d9f0bc in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f0b34d9b6b3 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f0b34da8464 in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f0b34d1e8c1 in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007f0b34d1e9e7 in QQmlComponentPrivate::completeCreate() () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f0b34d1e7c0 in QQmlComponent::create(QQmlContext*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x00007f0b0b502ec8 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#20 0x00007f0b0b5e23b3 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kwin/private/kdecoration/libkdecorationprivatedeclarative.so
#21 0x00007f0b34da857e in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x00007f0b34d235aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007f0b34d23baf in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#24 0x00007f0b34df7269 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#25 0x00007f0b34df7391 in QQmlDelegateModel::object(int, QQmlIncubator::IncubationMode) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007f0b351e4511 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007f0b351d790d in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007f0b351e3f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#29 0x00007f0b351e5081 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#30 0x00007f0b35110523 in QQuickWindowPrivate::polishItems() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#31 0x00007f0b3509f7fb in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#32 0x00007f0b350a0675 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#33 0x00007f0b36149b05 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#34 0x00007f0b3511a87b in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007f0b366f94a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f0b36700ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f0b35ca6499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f0b3613e7e3 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#39 0x00007f0b3613f4bd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#40 0x00007f0b36119b6b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#41 0x00007f0b2eb5ee5b in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007f0b35ca516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f0b35cad2e2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x0000560d4c541600 in  ()
#45 0x00007f0b356eb09b in __libc_start_main (main=0x560d4c5411f0, argc=1, argv=0x7ffccbda8d58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffccbda8d48) at ../csu/libc-start.c:308
#46 0x0000560d4c54168a in _start ()
[Inferior 1 (process 3831) detached]

Reported using DrKonqi