Bug 362448

Application: plasmashell (5.5.3)

Qt Version: 5.5.1
Frameworks Version: 5.21.0
Operating System: Linux 4.5.0-3-default x86_64
Distribution: "openSUSE Tumbleweed (20160117) (x86_64)"

-- Information about the crash:
I was changing virtual desktops (slide transition) when the crash occurred. It isn't 100% reproducible but it does seem to happen more when I have effects (i.e. hardware acceleration) enabled. 

Running openSUSE Tumbleweed x86_64, Plasma 5.5.3 if that isn't clear by the crash report.

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 0x7f74475648c0 (LWP 7571))]

Thread 8 (Thread 0x7f7430bf8700 (LWP 7573)):
#0  0x00007f7440adf49d in poll () at /lib64/libc.so.6
#1  0x00007f74459be432 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f74459c0007 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f7432d48dd9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f74411ce90f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f74402e64a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7440ae7ded in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f7429dcd700 (LWP 7587)):
#0  0x00007f7440adf49d in poll () at /lib64/libc.so.6
#1  0x00007f743d1cc374 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f743d1cc47c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f74413f343b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f744139d52a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f74411c9acc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f744449c7b5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f74411ce90f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f74402e64a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7440ae7ded in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f741c964700 (LWP 7588)):
#0  0x00007f7440adf49d in poll () at /lib64/libc.so.6
#1  0x00007f743d1cc374 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f743d1cc47c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f74413f343b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f744139d52a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f74411c9acc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f744449c7b5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f74411ce90f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f74402e64a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7440ae7ded in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f7416fc6700 (LWP 7589)):
#0  0x00007f743d20f6f4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f743d1cbde9 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f743d1cc318 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f743d1cc47c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f74413f343b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f744139d52a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f74411c9acc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f744449c7b5 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f74411ce90f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f74402e64a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f7440ae7ded in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f7415676700 (LWP 7590)):
#0  0x00007f74402ec07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7446c5ca84 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f7446c5cac9 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f74402e64a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f7440ae7ded in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f738dcbc700 (LWP 7628)):
#0  0x00007f743d20f6f4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f743d1cc296 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f743d1cc47c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f74413f343b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f744139d52a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f74411c9acc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7445025e42 in  () at /usr/lib64/libQt5Quick.so.5
#7  0x00007f74411ce90f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f74402e64a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7440ae7ded in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f737a0a2700 (LWP 7710)):
#0  0x00007f7440adf49d in poll () at /lib64/libc.so.6
#1  0x00007f743d1cc374 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f743d1cc47c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f74413f343b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f744139d52a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f74411c9acc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f737c7d3e07 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#7  0x00007f74411ce90f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f74402e64a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7440ae7ded in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f74475648c0 (LWP 7571)):
[KCrash Handler]
#6  0x00007f7444278df8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f74444db6ca in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f74445013ac in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f7444501a98 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f74413cd020 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f744144510c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib64/libQt5Core.so.5
#12 0x00007f738527d834 in  () at /usr/lib64/libtaskmanager.so.5
#13 0x00007f738527e9b7 in  () at /usr/lib64/libtaskmanager.so.5
#14 0x00007f74413cce6a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#15 0x00007f7385286338 in TaskManager::AbstractGroupableItem::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#16 0x00007f7385273b90 in  () at /usr/lib64/libtaskmanager.so.5
#17 0x00007f74413cce6a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f7385286468 in TaskManager::Task::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#19 0x00007f738526622b in TaskManager::Task::setActive(bool) () at /usr/lib64/libtaskmanager.so.5
#20 0x00007f7385279759 in TaskManager::TaskManager::activeWindowChanged(unsigned long long) () at /usr/lib64/libtaskmanager.so.5
#21 0x00007f74413cccf7 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#22 0x00007f7443fc02b2 in KWindowSystem::activeWindowChanged(unsigned long long) () at /usr/lib64/libKF5WindowSystem.so.5
#23 0x00007f7429fe46cb in  () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#24 0x00007f744139c76f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#25 0x00007f7432d4c7b4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#26 0x00007f7432d4d53b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#27 0x00007f74413cdc59 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f744271787c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#29 0x00007f744271c986 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x00007f744139fbe3 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#31 0x00007f74413a1f06 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#32 0x00007f74413f3013 in  () at /usr/lib64/libQt5Core.so.5
#33 0x00007f743d1cc1a7 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#34 0x00007f743d1cc3d8 in  () at /usr/lib64/libglib-2.0.so.0
#35 0x00007f743d1cc47c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#36 0x00007f74413f341f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#37 0x00007f744139d52a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#38 0x00007f74413a51ed in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#39 0x0000000000436527 in main ()

Reported using DrKonqi