Bug 357383

Application: plasmashell (5.5.0)

Qt Version: 5.5.1
Operating System: Linux 4.2.8-300.fc23.x86_64+debug x86_64
Distribution: "Fedora release 23 (Twenty Three)"

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

After entering username and password at the login screen, Plasma was loading. The desktop showed a Konsole and the taskbar, then the crash occurred without any user action having occurred.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3cc2069940 (LWP 2860))]

Thread 9 (Thread 0x7f3ca213e700 (LWP 2862)):
#0  0x00007f3cb9a4cffd in poll () at /lib64/libc.so.6
#1  0x00007f3cbff01272 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f3cbff02ee7 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f3ca40c7da9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f3cba6553ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f3cb8d9060a in start_thread () at /lib64/libpthread.so.0
#6  0x00007f3cb9a58a9d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f3c9b5ef700 (LWP 2943)):
#0  0x00007f3cb9a4cffd in poll () at /lib64/libc.so.6
#1  0x00007f3cb4f7516c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f3cb4f7527c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f3cba88cf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f3cba833f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f3cba650424 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3cbe99ab45 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f3cba6553ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f3cb8d9060a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3cb9a58a9d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f3c91421700 (LWP 2944)):
#0  0x00007f3cb8d95b10 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f3c98e2e773 in radeon_drm_cs_emit_ioctl () at /usr/lib64/dri/r600_dri.so
#2  0x00007f3c98e2dec7 in impl_thrd_routine () at /usr/lib64/dri/r600_dri.so
#3  0x00007f3cb8d9060a in start_thread () at /lib64/libpthread.so.0
#4  0x00007f3cb9a58a9d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f3c8d34a700 (LWP 2946)):
#0  0x00007f3cb9a4cffd in poll () at /lib64/libc.so.6
#1  0x00007f3cb4f7516c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f3cb4f7527c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f3cba88cf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f3cba833f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f3cba650424 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3cbe99ab45 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f3cba6553ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f3cb8d9060a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3cb9a58a9d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f3c87866700 (LWP 2962)):
#0  0x00007f3cb9a4cffd in poll () at /lib64/libc.so.6
#1  0x00007f3cb4f7516c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f3cb4f7527c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f3cba88cf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f3cba833f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f3cba650424 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3cbe99ab45 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f3cba6553ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f3cb8d9060a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3cb9a58a9d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f3c8601d700 (LWP 3022)):
#0  0x00007f3cb8d95b10 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f3cc17f2514 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f3cc17f2559 in  () at /lib64/libQt5Script.so.5
#3  0x00007f3cb8d9060a in start_thread () at /lib64/libpthread.so.0
#4  0x00007f3cb9a58a9d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f3bff2e9700 (LWP 3062)):
#0  0x00007f3cb9a4cffd in poll () at /lib64/libc.so.6
#1  0x00007f3cb4f7516c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f3cb4f7527c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f3cba88cf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f3cba833f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f3cba650424 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3cbf5478d6 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#7  0x00007f3cba6553ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f3cb8d9060a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3cb9a58a9d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f3bed0ba700 (LWP 3322)):
#0  0x00007f3cb9a4cffd in poll () at /lib64/libc.so.6
#1  0x00007f3cb4f7516c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f3cb4f7527c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f3cba88cf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f3cba833f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f3cba650424 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3beecf23c7 in KCupsConnection::run() () at /lib64/libkcupslib.so
#7  0x00007f3cba6553ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f3cb8d9060a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3cb9a58a9d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f3cc2069940 (LWP 2860)):
[KCrash Handler]
#5  0x00007f3cbe925100 in QQmlBoundSignalExpression::function() const () at /lib64/libQt5Qml.so.5
#6  0x00007f3cbe9251b0 in QQmlBoundSignalExpression::sourceLocation() const () at /lib64/libQt5Qml.so.5
#7  0x00007f3cbe904ff8 in QQmlData::destroyed(QObject*) () at /lib64/libQt5Qml.so.5
#8  0x00007f3cba86cec4 in QObject::~QObject() () at /lib64/libQt5Core.so.5
#9  0x00007f3cbf5da42d in QQuickItem::~QQuickItem() () at /lib64/libQt5Quick.so.5
#10 0x00007f3c844b64e6 in QQmlPrivate::QQmlElement<MouseEventListener>::~QQmlElement() () at /usr/lib64/qt5/qml/org/kde/kquickcontrolsaddons/libkquickcontrolsaddonsplugin.so
#11 0x00007f3cbe9e1f32 in QQmlDelegateModelPrivate::incubatorStatusChanged(QQDMIncubationTask*, QQmlIncubator::Status) () at /lib64/libQt5Qml.so.5
#12 0x00007f3cbe91fbce in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#13 0x00007f3cbe920194 in QQmlIncubationController::incubateFor(int) () at /lib64/libQt5Qml.so.5
#14 0x00007f3cbfa2b62c in KDeclarative::QmlObjectIncubationController::incubatingObjectCountChanged(int) () at /lib64/libKF5Declarative.so.5
#15 0x00007f3cbe91ef0d in QQmlIncubatorPrivate::clear() () at /lib64/libQt5Qml.so.5
#16 0x00007f3cbe91f6c8 in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#17 0x00007f3cbe920058 in QQmlIncubatorPrivate::forceCompletion(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#18 0x00007f3cbe9200bc in QQmlIncubator::forceCompletion() () at /lib64/libQt5Qml.so.5
#19 0x00007f3cbfa27b72 in KDeclarative::QmlObject::completeInitialization(QHash<QString, QVariant> const&) () at /lib64/libKF5Declarative.so.5
#20 0x00007f3cc1b1f5f7 in PlasmaQuick::AppletQuickItem::init() () at /lib64/libKF5PlasmaQuick.so.5
#21 0x00007f3c8787cb44 in AppletInterface::init() () at /usr/lib64/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#22 0x00007f3cc1b20768 in PlasmaQuick::AppletQuickItem::itemChange(QQuickItem::ItemChange, QQuickItem::ItemChangeData const&) () at /lib64/libKF5PlasmaQuick.so.5
#23 0x00007f3cbf5d746e in QQuickItemPrivate::refWindow(QQuickWindow*) () at /lib64/libQt5Quick.so.5
#24 0x00007f3cbf5d9d54 in QQuickItem::setParentItem(QQuickItem*) () at /lib64/libQt5Quick.so.5
#25 0x00007f3cbf5dc731 in QQuickItem::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Quick.so.5
#26 0x00007f3cbf5dce8b in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libQt5Quick.so.5
#27 0x00007f3cc1b207e5 in PlasmaQuick::AppletQuickItem::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libKF5PlasmaQuick.so.5
#28 0x00007f3c8787dab5 in AppletInterface::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib64/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#29 0x00007f3cbe916e10 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /lib64/libQt5Qml.so.5
#30 0x00007f3cbe8dcb4d in QV4::QObjectWrapper::setProperty(QObject*, QV4::ExecutionContext*, QQmlPropertyData*, QV4::Value const&) () at /lib64/libQt5Qml.so.5
#31 0x00007f3cbe8dd1c8 in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /lib64/libQt5Qml.so.5
#32 0x00007f3cbe8dd302 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /lib64/libQt5Qml.so.5
#33 0x00007f3cbe8ec812 in QV4::Runtime::setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /lib64/libQt5Qml.so.5
#34 0x00007f3bfc007e23 in  ()
#35 0x00005640514f3090 in  ()
#36 0x00007f3cbe9871b1 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /lib64/libQt5Qml.so.5
#37 0xffffffffffffffff in  ()#38 0x0003000000000003 in  ()
#39 0x0000000000000000 in  ()

Possible duplicates by query: bug 357246, bug 357113, bug 356411, bug 355957, bug 355251.

Reported using DrKonqi