Bug 349757

Application: systemsettings5 (5.3.2)

Qt Version: 5.4.2
Operating System: Linux 4.0.6-300.fc22.x86_64 x86_64
Distribution: "Fedora release 22 (Twenty Two)"

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

system-settings crashes on quit, even when I changed nothing. It even crashes when I start system-settings and quit it immedeately.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff0a1e40840 (LWP 19490))]

Thread 3 (Thread 0x7ff086ae6700 (LWP 19491)):
#0  0x00007ff09c14d66d in poll () at /lib64/libc.so.6
#1  0x00007ff0990bc182 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007ff0990bdd07 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007ff0894c79b9 in QXcbEventReader::run() () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007ff09cd57e3e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007ff098879555 in start_thread () at /lib64/libpthread.so.0
#6  0x00007ff09c158f3d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7ff07879b700 (LWP 19496)):
#0  0x00007ff09c1492ed in read () at /lib64/libc.so.6
#1  0x00007ff097b06b00 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007ff097ac28b4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007ff097ac2d60 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007ff097ac2ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007ff09cf8eb8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007ff09cf34eba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007ff09cd52f54 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007ff09b531955 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#9  0x00007ff09cd57e3e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007ff098879555 in start_thread () at /lib64/libpthread.so.0
#11 0x00007ff09c158f3d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7ff0a1e40840 (LWP 19490)):
[KCrash Handler]
#5  0x00007ff09b455167 in QV4::RegExpCache::~RegExpCache() () at /lib64/libQt5Qml.so.5
#6  0x00007ff09b400fe3 in QV4::ExecutionEngine::~ExecutionEngine() () at /lib64/libQt5Qml.so.5
#7  0x00007ff09b534b81 in QV8Engine::~QV8Engine() () at /lib64/libQt5Qml.so.5
#8  0x00007ff09b534d99 in QV8Engine::~QV8Engine() () at /lib64/libQt5Qml.so.5
#9  0x00007ff09b394e51 in QJSEngine::~QJSEngine() () at /lib64/libQt5Qml.so.5
#10 0x00007ff09b49bde5 in QQmlEngine::~QQmlEngine() () at /lib64/libQt5Qml.so.5
#11 0x00007ff09b49bea9 in QQmlEngine::~QQmlEngine() () at /lib64/libQt5Qml.so.5
#12 0x00007ff06f333962 in Aurorae::Decoration::~Decoration() () at /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#13 0x00007ff06f3339d9 in Aurorae::Decoration::~Decoration() () at /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#14 0x00007ff09cf68f60 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#15 0x00007ff09ea2d7ec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#16 0x00007ff09ea32e90 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#17 0x00007ff09cf3767b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#18 0x00007ff09cf397b7 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#19 0x00007ff09cf8e763 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#20 0x00007ff097ac2a8a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#21 0x00007ff097ac2e20 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#22 0x00007ff097ac2ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#23 0x00007ff09cf8eb6f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#24 0x00007ff09cf34eba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#25 0x00007ff09cf3ca2c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#26 0x000000000040eb1b in main ()

Possible duplicates by query: bug 348504, bug 348470, bug 348282, bug 347866.

Reported using DrKonqi