Application: kwin_x11 (5.2.0)

Qt Version: 5.4.0
Operating System: Linux 3.18.3-201.fc21.x86_64 x86_64
Distribution: "Fedora release 21 (Twenty One)"

-- Information about the crash:
Installed Plasma 5 from dvratil's copr repo. When Kodi is launched, KWin crashes, every time.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f69f693e900 (LWP 3974))]

Thread 2 (Thread 0x7f69ed33b700 (LWP 3981)):
#0  0x0000003fde00c939 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x0000003fe5ca4558 in QWaitCondition::wait(QMutex*, unsigned long) () at /lib64/libQt5Core.so.5
#2  0x0000003fe5ca06ac in QThreadPoolThread::run() () at /lib64/libQt5Core.so.5
#3  0x0000003fe5ca34ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#4  0x0000003fde00752a in start_thread () at /lib64/libpthread.so.0
#5  0x0000003fde50079d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f69f693e900 (LWP 3974)):
[KCrash Handler]
#5  0x0000003832af886b in qt_qimageScaleAARGBA(QImageScale::QImageScaleInfo*, unsigned int*, int, int, int, int, int, int, int, int) () at /lib64/libQt5Gui.so.5
#6  0x0000003832afae2c in qSmoothScaleImage(QImage const&, int, int) () at /lib64/libQt5Gui.so.5
#7  0x00000038329358f9 in smoothScaled(QImage const&, int, int) () at /lib64/libQt5Gui.so.5
#8  0x000000383293616a in QImage::transformed(QTransform const&, Qt::TransformationMode) const () at /lib64/libQt5Gui.so.5
#9  0x0000003832936bb8 in QImage::scaled(QSize const&, Qt::AspectRatioMode, Qt::TransformationMode) const () at /lib64/libQt5Gui.so.5
#10 0x000000383a231f15 in KWindowSystemPrivateX11::icon(unsigned long long, int, int, bool, int) () at /lib64/libKF5WindowSystem.so.5
#11 0x000000383a226578 in KWindowSystem::icon(unsigned long long, int, int, bool, int) () at /lib64/libKF5WindowSystem.so.5
#12 0x0000003086465f0e in KWin::Client::getIcons() () at /lib64/libkwin.so.5
#13 0x00000030864a7c97 in KWin::Client::manage(unsigned int, bool) () at /lib64/libkwin.so.5
#14 0x000000308645077d in KWin::Workspace::createClient(unsigned int, bool) () at /lib64/libkwin.so.5
#15 0x00000030864543bb in KWin::Workspace::init() () at /lib64/libkwin.so.5
#16 0x0000003086454ebb in KWin::Workspace::Workspace(bool) () at /lib64/libkwin.so.5
#17 0x0000003087e03e46 in QtPrivate::QFunctorSlotObject<KWin::ApplicationX11::performStartup()::{lambda()#2}, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () at /lib64/libkdeinit5_kwin_x11.so
#18 0x0000003fe5ebd45a in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#19 0x000000383a2276b2 in KSelectionOwner::Private::claimSucceeded() () at /lib64/libKF5WindowSystem.so.5
#20 0x000000383a227f31 in KSelectionOwner::filterEvent(void*) () at /lib64/libKF5WindowSystem.so.5
#21 0x0000003fe5e8aec0 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /lib64/libQt5Core.so.5
#22 0x00007f69f033a87d in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#23 0x00007f69f033bd7b in QXcbConnection::processXcbEvents() () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#24 0x0000003fe5ebec2a in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#25 0x000000383795ad3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#26 0x0000003837960330 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#27 0x0000003fe5e8e4ab in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#28 0x0000003fe5e904eb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#29 0x0000003fe5ee2cf2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#30 0x00007f69f039052d in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#31 0x0000003fe5e8bd42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#32 0x0000003fe5e937ec in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#33 0x0000003087e04eab in kdemain () at /lib64/libkdeinit5_kwin_x11.so
#34 0x0000003fde41ffe0 in __libc_start_main () at /lib64/libc.so.6
#35 0x0000000000400bee in _start ()

Reported using DrKonqi