Application: plasmashell (5.6.5)

Qt Version: 5.6.1
Frameworks Version: 5.23.0
Operating System: Linux 4.5.7-202.fc23.i686+PAE i686
Distribution: "Fedora release 23 (Twenty Three)"

-- Information about the crash:
- What I was doing when the application crashed:
clicking on (or to quickly) on the taskbar icons in quick successions seems to cause crashes

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1855840 (LWP 2010))]

Thread 7 (Thread 0xb05a0b40 (LWP 2013)):
#0  0xffffffff in __libc_enable_asynccancel () at /lib/libc.so.6
#1  0xffffffff in poll () at /lib/libc.so.6
#2  0xffffffff in g_poll () at /lib/libglib-2.0.so.0
#3  0xffffffff in g_main_context_iterate.isra () at /lib/libglib-2.0.so.0
#4  0xffffffff in g_main_context_iteration () at /lib/libglib-2.0.so.0
#5  0xffffffff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#6  0xffffffff in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#7  0xffffffff in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#8  0xffffffff in QThread::exec() () at /lib/libQt5Core.so.5
#9  0xffffffff in QDBusConnectionManager::run() () at /lib/libQt5DBus.so.5
#10 0xffffffff in QThreadPrivate::start(void*) () at /lib/libQt5Core.so.5
#11 0xffffffff in start_thread () at /lib/libpthread.so.0
#12 0xffffffff in clone () at /lib/libc.so.6

Thread 6 (Thread 0xaf1f4b40 (LWP 2055)):
#0  0xffffffff in __vdso_clock_gettime ()
#1  0xffffffff in clock_gettime () at /lib/libc.so.6
#2  0xffffffff in qt_gettime() () at /lib/libQt5Core.so.5
#3  0xffffffff in QTimerInfoList::updateCurrentTime() () at /lib/libQt5Core.so.5
#4  0xffffffff in QTimerInfoList::timerWait(timespec&) () at /lib/libQt5Core.so.5
#5  0xffffffff in timerSourcePrepareHelper(GTimerSource*, int*) () at /lib/libQt5Core.so.5
#6  0xffffffff in timerSourcePrepare(_GSource*, int*) () at /lib/libQt5Core.so.5
#7  0xffffffff in g_main_context_prepare () at /lib/libglib-2.0.so.0
#8  0xffffffff in g_main_context_iterate.isra () at /lib/libglib-2.0.so.0
#9  0xffffffff in g_main_context_iteration () at /lib/libglib-2.0.so.0
#10 0xffffffff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#11 0xffffffff in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#12 0xffffffff in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#13 0xffffffff in QThread::exec() () at /lib/libQt5Core.so.5
#14 0xffffffff in QQmlThreadPrivate::run() () at /lib/sse2/libQt5Qml.so.5
#15 0xffffffff in QThreadPrivate::start(void*) () at /lib/libQt5Core.so.5
#16 0xffffffff in start_thread () at /lib/libpthread.so.0
#17 0xffffffff in clone () at /lib/libc.so.6

Thread 5 (Thread 0xac6efb40 (LWP 2073)):
#0  0xffffffff in __kernel_vsyscall ()
#1  0xffffffff in poll () at /lib/libc.so.6
#2  0xffffffff in g_poll () at /lib/libglib-2.0.so.0
#3  0xffffffff in g_main_context_iterate.isra () at /lib/libglib-2.0.so.0
#4  0xffffffff in g_main_context_iteration () at /lib/libglib-2.0.so.0
#5  0xffffffff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#6  0xffffffff in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#7  0xffffffff in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#8  0xffffffff in QThread::exec() () at /lib/libQt5Core.so.5
#9  0xffffffff in QQmlThreadPrivate::run() () at /lib/sse2/libQt5Qml.so.5
#10 0xffffffff in QThreadPrivate::start(void*) () at /lib/libQt5Core.so.5
#11 0xffffffff in start_thread () at /lib/libpthread.so.0
#12 0xffffffff in clone () at /lib/libc.so.6

Thread 4 (Thread 0xab466b40 (LWP 2075)):
#0  0xffffffff in g_main_context_check () at /lib/libglib-2.0.so.0
#1  0xffffffff in g_main_context_iterate.isra () at /lib/libglib-2.0.so.0
#2  0xffffffff in g_main_context_iteration () at /lib/libglib-2.0.so.0
#3  0xffffffff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#4  0xffffffff in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#5  0xffffffff in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#6  0xffffffff in QThread::exec() () at /lib/libQt5Core.so.5
#7  0xffffffff in QQmlThreadPrivate::run() () at /lib/sse2/libQt5Qml.so.5
#8  0xffffffff in QThreadPrivate::start(void*) () at /lib/libQt5Core.so.5
#9  0xffffffff in start_thread () at /lib/libpthread.so.0
#10 0xffffffff in clone () at /lib/libc.so.6

Thread 3 (Thread 0xaa361b40 (LWP 2081)):
#0  0xffffffff in __kernel_vsyscall ()
#1  0xffffffff in pthread_cond_wait@@GLIBC_2.3.2 () at /lib/libpthread.so.0
#2  0xffffffff in pthread_cond_wait@@GLIBC_2.3.2 () at /lib/libc.so.6
#3  0xffffffff in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib/libQt5Script.so.5
#4  0xffffffff in QTWTF::TCMalloc_Central_FreeList::Init(unsigned int) () at /lib/libQt5Script.so.5
#5  0xffffffff in start_thread () at /lib/libpthread.so.0
#6  0xffffffff in clone () at /lib/libc.so.6

Thread 2 (Thread 0xa8c4cb40 (LWP 2177)):
#0  0xffffffff in g_main_context_prepare () at /lib/libglib-2.0.so.0
#1  0xffffffff in g_main_context_iterate.isra () at /lib/libglib-2.0.so.0
#2  0xffffffff in g_main_context_iteration () at /lib/libglib-2.0.so.0
#3  0xffffffff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#4  0xffffffff in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#5  0xffffffff in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#6  0xffffffff in QThread::exec() () at /lib/libQt5Core.so.5
#7  0xffffffff in QQuickPixmapReader::run() () at /lib/libQt5Quick.so.5
#8  0xffffffff in QThreadPrivate::start(void*) () at /lib/libQt5Core.so.5
#9  0xffffffff in start_thread () at /lib/libpthread.so.0
#10 0xffffffff in clone () at /lib/libc.so.6

Thread 1 (Thread 0xb1855840 (LWP 2010)):
[KCrash Handler]
#7  0xffffffff in brw_workaround_depthstencil_alignment () at /usr/lib/dri/i965_dri.so
#8  0xffffffff in brw_clear () at /usr/lib/dri/i965_dri.so
#9  0xffffffff in _mesa_Clear () at /usr/lib/dri/i965_dri.so
#10 0xffffffff in glClear () at /lib/libGL.so.1
#11 0xffffffff in QSGBindable::clear(QFlags<QSGAbstractRenderer::ClearModeBit>) const () at /lib/libQt5Quick.so.5
#12 0xffffffff in QSGBatchRenderer::Renderer::renderBatches() () at /lib/libQt5Quick.so.5
#13 0xffffffff in QSGBatchRenderer::Renderer::render() () at /lib/libQt5Quick.so.5
#14 0xffffffff in QSGRenderer::renderScene(QSGBindable const&) () at /lib/libQt5Quick.so.5
#15 0xffffffff in QSGRenderer::renderScene(unsigned int) () at /lib/libQt5Quick.so.5
#16 0xffffffff in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /lib/libQt5Quick.so.5
#17 0xffffffff in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /lib/libQt5Quick.so.5
#18 0xffffffff in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) () at /lib/libQt5Quick.so.5
#19 0xffffffff in QSGGuiThreadRenderLoop::event(QEvent*) () at /lib/libQt5Quick.so.5
#20 0xffffffff in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/libQt5Widgets.so.5
#21 0xffffffff in QApplication::notify(QObject*, QEvent*) () at /lib/libQt5Widgets.so.5
#22 0xffffffff in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/libQt5Core.so.5
#23 0xffffffff in QTimerInfoList::activateTimers() () at /lib/libQt5Core.so.5
#24 0xffffffff in timerSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib/libQt5Core.so.5
#25 0xffffffff in g_main_context_dispatch () at /lib/libglib-2.0.so.0
#26 0xffffffff in g_main_context_iterate.isra () at /lib/libglib-2.0.so.0
#27 0xffffffff in g_main_context_iteration () at /lib/libglib-2.0.so.0
#28 0xffffffff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#29 0xffffffff in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5XcbQpa.so.5
#30 0xffffffff in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#31 0xffffffff in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQt5Core.so.5
#32 0xffffffff in QCoreApplication::exec() () at /lib/libQt5Core.so.5
#33 0xffffffff in QGuiApplication::exec() () at /lib/libQt5Gui.so.5
#34 0xffffffff in QApplication::exec() () at /lib/libQt5Widgets.so.5
#35 0xffffffff in main ()

Reported using DrKonqi