Application: plasmashell (5.5.5)
 (Compiled from sources)
Qt Version: 5.5.1
Operating System: Linux 4.4.6-gentoo x86_64
Distribution (Platform): Gentoo Packages

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

Session was left idle.  Various applications were left open (thunderbird, skype, putty, konsole, slickedit, dolphin), but it's not certain this matters when reproducing the bug - plasmashell seems to crash randomly, rather than due to any action performed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbc6dac07c0 (LWP 28414))]

Thread 8 (Thread 0x7fbc59bec700 (LWP 28415)):
#0  0x00007fbc6826846d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbc6c283ac2 in _xcb_conn_wait () from /usr/lib64/libxcb.so.1
#2  0x00007fbc6c28572f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fbc5b0f4bd9 in QXcbEventReader::run() () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fbc6891c302 in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fbc67a78444 in start_thread (arg=0x7fbc59bec700) at pthread_create.c:334
#6  0x00007fbc682714cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fbc531cc700 (LWP 28416)):
#0  0x00007fbc6826444d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbc642fc650 in g_wakeup_acknowledge () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fbc642b99cc in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fbc642b9ec0 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fbc642ba02c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007fbc68b16e4c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007fbc68ac808a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007fbc68917894 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007fbc6b121545 in QQmlThreadPrivate::run() () from /usr/lib64/libQt5Qml.so.5
#9  0x00007fbc6891c302 in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#10 0x00007fbc67a78444 in start_thread (arg=0x7fbc531cc700) at pthread_create.c:334
#11 0x00007fbc682714cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fbc4afe6700 (LWP 28417)):
#0  0x00007fbc6826846d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbc642b9f1c in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fbc642ba02c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fbc68b16e4c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fbc68ac808a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fbc68917894 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fbc6b121545 in QQmlThreadPrivate::run() () from /usr/lib64/libQt5Qml.so.5
#7  0x00007fbc6891c302 in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007fbc67a78444 in start_thread (arg=0x7fbc4afe6700) at pthread_create.c:334
#9  0x00007fbc682714cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fbc49691700 (LWP 28418)):
#0  0x00007fbc6826846d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbc642b9f1c in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fbc642ba02c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fbc68b16e4c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fbc68ac808a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fbc68917894 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fbc6b121545 in QQmlThreadPrivate::run() () from /usr/lib64/libQt5Qml.so.5
#7  0x00007fbc6891c302 in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007fbc67a78444 in start_thread (arg=0x7fbc49691700) at pthread_create.c:334
#9  0x00007fbc682714cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fbc43bef700 (LWP 28419)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fbc6d51f834 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib64/libQt5Script.so.5
#2  0x00007fbc6d51f879 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib64/libQt5Script.so.5
#3  0x00007fbc67a78444 in start_thread (arg=0x7fbc43bef700) at pthread_create.c:334
#4  0x00007fbc682714cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fbc410a8700 (LWP 28420)):
#0  0x00007fbc6826846d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbc642b9f1c in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fbc642ba02c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fbc68b16e4c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fbc68ac808a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fbc68917894 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fbc6bac0b06 in QQuickPixmapReader::run() () from /usr/lib64/libQt5Quick.so.5
#7  0x00007fbc6891c302 in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007fbc67a78444 in start_thread (arg=0x7fbc410a8700) at pthread_create.c:334
#9  0x00007fbc682714cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fbbac4d4700 (LWP 28421)):
#0  0x00007fbc6826846d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbc642b9f1c in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fbc642ba02c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fbc68b16e4c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fbc68ac808a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fbc68917894 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fbbad388957 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#7  0x00007fbc6891c302 in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007fbc67a78444 in start_thread (arg=0x7fbbac4d4700) at pthread_create.c:334
#9  0x00007fbc682714cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fbc6dac07c0 (LWP 28414)):
[KCrash Handler]
#6  0x00007fbc5b10060e in QXcbScreen::mapToNative(QRect const&) const () from /usr/lib64/libQt5XcbQpa.so.5
#7  0x00007fbc5b105703 in QXcbWindow::mapToNative(QRect const&, QXcbScreen const*) const () from /usr/lib64/libQt5XcbQpa.so.5
#8  0x00007fbc5b106ebb in QXcbWindow::propagateSizeHints() () from /usr/lib64/libQt5XcbQpa.so.5
#9  0x00007fbc5b10bfbd in QXcbWindow::setGeometry(QRect const&) () from /usr/lib64/libQt5XcbQpa.so.5
#10 0x00007fbc68dfcddb in QWindow::resize(QSize const&) () from /usr/lib64/libQt5Gui.so.5
#11 0x00007fbc6d6571a2 in PlasmaQuick::DialogPrivate::syncToMainItemSize() () from /usr/lib64/libKF5PlasmaQuick.so.5
#12 0x00007fbc6d658f11 in PlasmaQuick::Dialog::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libKF5PlasmaQuick.so.5
#13 0x00007fbc68af16a4 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#14 0x00007fbc6bbd31dc in QQuickMouseArea::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib64/libQt5Quick.so.5
#15 0x00007fbc6bb4bb5e in QQuickItem::setHeight(double) () from /usr/lib64/libQt5Quick.so.5
#16 0x00007fbc6bb57764 in QQuickItem::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Quick.so.5
#17 0x00007fbc6bb58413 in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Quick.so.5
#18 0x00007fbc6bc9f045 in QQuickMouseArea::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Quick.so.5
#19 0x00007fbc6b09aace in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib64/libQt5Qml.so.5
#20 0x00007fbc6b10b685 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib64/libQt5Qml.so.5
#21 0x00007fbc6b10bade in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /usr/lib64/libQt5Qml.so.5
#22 0x00007fbc6b0e73f4 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib64/libQt5Qml.so.5
#23 0x00007fbc6b08754c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /usr/lib64/libQt5Qml.so.5
#24 0x00007fbc68af0f21 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#25 0x00007fbc6bb4bd83 in QQuickItem::setImplicitHeight(double) () from /usr/lib64/libQt5Quick.so.5
#26 0x00007fbc6bb5769f in QQuickItem::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Quick.so.5
#27 0x00007fbc6bb58413 in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Quick.so.5
#28 0x00007fbc6b07ee74 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Qml.so.5
#29 0x00007fbc6b07ef8b in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Qml.so.5
#30 0x00007fbc6b09aace in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib64/libQt5Qml.so.5
#31 0x00007fbc6b10b685 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib64/libQt5Qml.so.5
#32 0x00007fbc6b10bade in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /usr/lib64/libQt5Qml.so.5
#33 0x00007fbc6b0e73f4 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib64/libQt5Qml.so.5
#34 0x00007fbc6b08754c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /usr/lib64/libQt5Qml.so.5
#35 0x00007fbc68af0f21 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#36 0x00007fbc6bb5506a in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () from /usr/lib64/libQt5Quick.so.5
#37 0x00007fbc6bb54f64 in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () from /usr/lib64/libQt5Quick.so.5
#38 0x00007fbc6bb54f64 in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () from /usr/lib64/libQt5Quick.so.5
#39 0x00007fbc6bb550e4 in QQuickItem::setVisible(bool) () from /usr/lib64/libQt5Quick.so.5
#40 0x00007fbc6d658093 in PlasmaQuick::DialogPrivate::updateVisibility(bool) () from /usr/lib64/libKF5PlasmaQuick.so.5
#41 0x00007fbc6d658ec0 in PlasmaQuick::Dialog::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libKF5PlasmaQuick.so.5
#42 0x00007fbc68ad3596 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () from /usr/lib64/libQt5Core.so.5
#43 0x00007fbc68ad7e09 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib64/libQt5Core.so.5
#44 0x00007fbbae55ea0c in NotificationsHelper::onPopupShown() () from /usr/lib64/qt5/qml/org/kde/plasma/private/notifications/libnotificationshelperplugin.so
#45 0x00007fbc68af1123 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#46 0x00007fbc68dfb3b2 in QWindow::visibleChanged(bool) () from /usr/lib64/libQt5Gui.so.5
#47 0x00007fbc68dfe5b7 in QWindow::setVisible(bool) () from /usr/lib64/libQt5Gui.so.5
#48 0x00007fbc68afe108 in QSingleShotTimer::timerEvent(QTimerEvent*) () from /usr/lib64/libQt5Core.so.5
#49 0x00007fbc68af2713 in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#50 0x00007fbc6953069c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#51 0x00007fbc69535b10 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#52 0x00007fbc68ac946d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#53 0x00007fbc68b1641d in QTimerInfoList::activateTimers() () from /usr/lib64/libQt5Core.so.5
#54 0x00007fbc68b16929 in idleTimerSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/libQt5Core.so.5
#55 0x00007fbc642b9c9d in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#56 0x00007fbc642b9f80 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#57 0x00007fbc642ba02c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#58 0x00007fbc68b16e37 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#59 0x00007fbc68ac808a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#60 0x00007fbc68acf45c in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#61 0x0000000000432be3 in main ()

Possible duplicates by query: bug 363545, bug 362752, bug 362514, bug 362073, bug 361315.

Reported using DrKonqi