Application: plasmashell (5.7.5)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.8.8-100.fc23.x86_64 x86_64
Distribution: "Fedora release 23 (Twenty Three)"

-- Information about the crash:
- What I was doing when the application crashed:
During normal operation, switching between open windows.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7d7048e940 (LWP 1770))]

Thread 10 (Thread 0x7f7d66d95700 (LWP 1771)):
#0  0x00007f7d7f15db7d in poll () at /lib64/libc.so.6
#1  0x00007f7d8418c272 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f7d8418dee7 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f7d698c5039 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f7d7fd6800c in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f7d6579e700 (LWP 1777)):
#0  0x00007f7d7a86d794 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f7d7a82819e in g_main_context_acquire () at /lib64/libglib-2.0.so.0
#2  0x00007f7d7a829045 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f7d7a82929c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f7d7ff52b5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7d7ff0325a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f7d7fd63bd4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f7d8064c675 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#8  0x00007f7d7fd6800c in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#10 0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f7d5fbf2700 (LWP 1791)):
#0  0x00007f7d7f15db7d in poll () at /lib64/libc.so.6
#1  0x00007f7d7a82918c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f7d7a82929c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f7d7ff52b5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f7d7ff0325a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7d7fd63bd4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f7d8303f7f5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f7d7fd6800c in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f7d5df9c700 (LWP 1855)):
#0  0x00007f7d85de340e in _dl_update_slotinfo () at /lib64/ld-linux-x86-64.so.2
#1  0x00007f7d85de363c in update_get_addr () at /lib64/ld-linux-x86-64.so.2
#2  0x00007f7d7fd66fe6 in QThreadData::current(bool) () at /lib64/libQt5Core.so.5
#3  0x00007f7d7ff528ba in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#4  0x00007f7d7a82872d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#5  0x00007f7d7a8290bb in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#6  0x00007f7d7a82929c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#7  0x00007f7d7ff52b5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#8  0x00007f7d7ff0325a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#9  0x00007f7d7fd63bd4 in QThread::exec() () at /lib64/libQt5Core.so.5
#10 0x00007f7d8303f7f5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#11 0x00007f7d7fd6800c in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#12 0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#13 0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f7d53fff700 (LWP 1881)):
#0  0x00007f7d7e4b6b20 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d858672e4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f7d85867329 in  () at /lib64/libQt5Script.so.5
#3  0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#4  0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f7cc5b44700 (LWP 2258)):
#0  0x00007f7d7fd66fed in QThreadData::current(bool) () at /lib64/libQt5Core.so.5
#1  0x00007f7d7ff528ba in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#2  0x00007f7d7a828bd1 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f7d7a829130 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f7d7a82929c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f7d7ff52b5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f7d7ff0325a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f7d7fd63bd4 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f7cc6c21b25 in QQuickXmlQueryEngine::run() () at /usr/lib64/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#9  0x00007f7d7fd6800c in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f7cc513a700 (LWP 2259)):
#0  0x00007f7d7a86d779 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f7d7a828739 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f7d7a8290bb in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f7d7a82929c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f7d7ff52b5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7d7ff0325a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f7d7fd63bd4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f7d7fd6800c in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f7cbee16700 (LWP 2389)):
#0  0x00007f7d7a86d779 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f7d7a828bdc in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007f7d7a829130 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f7d7a82929c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f7d7ff52b5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7d7ff0325a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f7d7fd63bd4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f7d839c9bd6 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#8  0x00007f7d7fd6800c in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#10 0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f7cabafa700 (LWP 2752)):
#0  0x00007f7d7f15db7d in poll () at /lib64/libc.so.6
#1  0x00007f7d7a82918c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f7d7a82929c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f7d7ff52b5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f7d7ff0325a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7d7fd63bd4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f7cad6ba547 in KCupsConnection::run() () at /lib64/libkcupslib.so
#7  0x00007f7d7fd6800c in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f7d7e4b161a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d7f1695fd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f7d7048e940 (LWP 1770)):
[KCrash Handler]
#6  0x00007f7d7f09ba28 in raise () at /lib64/libc.so.6
#7  0x00007f7d7f09d62a in abort () at /lib64/libc.so.6
#8  0x00007f7d7f094227 in __assert_fail_base () at /lib64/libc.so.6
#9  0x00007f7d7f0942d2 in  () at /lib64/libc.so.6
#10 0x00007f7d526ac7ec in  () at /lib64/libdrm_nouveau.so.2
#11 0x00007f7d526adcb2 in nouveau_pushbuf_reloc () at /lib64/libdrm_nouveau.so.2
#12 0x00007f7d52f5ffb0 in nv30_transfer_copy_data () at /usr/lib64/dri/nouveau_dri.so
#13 0x00007f7d52f4a43c in nouveau_transfer_write () at /usr/lib64/dri/nouveau_dri.so
#14 0x00007f7d52f4a5f8 in nouveau_buffer_transfer_unmap () at /usr/lib64/dri/nouveau_dri.so
#15 0x00007f7d52e58e36 in u_default_transfer_inline_write () at /usr/lib64/dri/nouveau_dri.so
#16 0x00007f7d52cc30ad in st_bufferobj_data () at /usr/lib64/dri/nouveau_dri.so
#17 0x00007f7d52b84680 in _mesa_buffer_data () at /usr/lib64/dri/nouveau_dri.so
#18 0x00007f7d52b849bf in _mesa_BufferData () at /usr/lib64/dri/nouveau_dri.so
#19 0x00007f7d839f3f1f in QSGBatchRenderer::Renderer::unmap(QSGBatchRenderer::Buffer*, bool) () at /lib64/libQt5Quick.so.5
#20 0x00007f7d839f5c95 in QSGBatchRenderer::Renderer::uploadBatch(QSGBatchRenderer::Batch*) () at /lib64/libQt5Quick.so.5
#21 0x00007f7d83a0041e in QSGBatchRenderer::Renderer::render() () at /lib64/libQt5Quick.so.5
#22 0x00007f7d83a0c1ef in QSGRenderer::renderScene(QSGBindable const&) () at /lib64/libQt5Quick.so.5
#23 0x00007f7d83a0ca3b in QSGRenderer::renderScene(unsigned int) () at /lib64/libQt5Quick.so.5
#24 0x00007f7d83a1cd5e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /lib64/libQt5Quick.so.5
#25 0x00007f7d83a645b9 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /lib64/libQt5Quick.so.5
#26 0x00007f7d83a32ee5 in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) () at /lib64/libQt5Quick.so.5
#27 0x00007f7d83a340c1 in QSGGuiThreadRenderLoop::event(QEvent*) () at /lib64/libQt5Quick.so.5
#28 0x00007f7d8081e10c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#29 0x00007f7d80823646 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#30 0x00007f7d7ff043ea in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#31 0x00007f7d7ff520a3 in QTimerInfoList::activateTimers() () at /lib64/libQt5Core.so.5
#32 0x00007f7d7ff52611 in timerSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#33 0x00007f7d7a828e5a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#34 0x00007f7d7a8291f0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#35 0x00007f7d7a82929c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#36 0x00007f7d7ff52b3f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#37 0x00007f7d7ff0325a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#38 0x00007f7d7ff0abdc in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#39 0x0000557891d4a565 in main ()

Reported using DrKonqi