Application: kwin_x11 (5.8.4)

Qt Version: 5.7.0
Frameworks Version: 5.28.0
Operating System: Linux 4.4.36-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
- What I was doing when the application crashed: 
Clicked on a new tab in vivadi-stable Version 1.5.658.56 (64-bit) then, Kwin crashes and presents a crash report assistant

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f258a66f840 (LWP 12362))]

Thread 6 (Thread 0x7f2561ff8700 (LWP 12393)):
#0  0x00000035c840d10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x0000003686788ac4 in  () at /usr/lib/libQt5Script.so.5
#2  0x0000003686788b09 in  () at /usr/lib/libQt5Script.so.5
#3  0x00000035c8407454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00000035c80e87df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f2563fff700 (LWP 12391)):
#0  0x00000035c80b7ffd in nanosleep () at /usr/lib/libc.so.6
#1  0x00000035c80e1874 in usleep () at /usr/lib/libc.so.6
#2  0x00007f256ae43d00 in  () at /usr/lib/xorg/modules/dri//fglrx_dri.so
#3  0x00007f256a544332 in  () at /usr/lib/xorg/modules/dri//fglrx_dri.so
#4  0x00007f256a544385 in  () at /usr/lib/xorg/modules/dri//fglrx_dri.so
#5  0x00000035c8407454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00000035c80e87df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f257968d700 (LWP 12389)):
#0  0x00000035c80df551 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f258cbe8ac9 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f258cbea3b8 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f258cb9723a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f258c9ba0f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00000036804cd2d5 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f258c9bed78 in  () at /usr/lib/libQt5Core.so.5
#7  0x00000035c8407454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00000035c80e87df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f257bdf1700 (LWP 12380)):
#0  0x00000035c80df551 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f258cbe8ac9 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f258cbea3b8 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f258cb9723a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f258c9ba0f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f2589aefe55 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f258c9bed78 in  () at /usr/lib/libQt5Core.so.5
#7  0x00000035c8407454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00000035c80e87df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f2581c19700 (LWP 12374)):
#0  0x00000035c80df48d in poll () at /usr/lib/libc.so.6
#1  0x00000035c980c8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00000035c980e679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f25822ac449 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f258c9bed78 in  () at /usr/lib/libQt5Core.so.5
#5  0x00000035c8407454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00000035c80e87df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f258a66f840 (LWP 12362)):
[KCrash Handler]
#6  0x00007f2569ba3eb9 in  () at /usr/lib/xorg/modules/dri//fglrx_dri.so
#7  0x00007f2569297a28 in  () at /usr/lib/xorg/modules/dri//fglrx_dri.so
#8  0x00007f2569297cc2 in  () at /usr/lib/xorg/modules/dri//fglrx_dri.so
#9  0x00007f25696c35c3 in  () at /usr/lib/xorg/modules/dri//fglrx_dri.so
#10 0x00007f258c1e39b9 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#11 0x00007f258c1e5554 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#12 0x00007f258e79dade in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#13 0x00007f258e766ee1 in KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#14 0x00007f258e79d7da in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#15 0x00007f258c6e36b1 in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.9
#16 0x00007f258e79d77e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#17 0x00007f258c6e36b1 in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.9
#18 0x00007f258e79d77e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#19 0x00007f258e76e9b9 in KWin::Scene::paintWindow(KWin::Scene::Window*, int, QRegion, KWin::WindowQuadList) () at /usr/lib/libkwin.so.5
#20 0x00007f258e76b16b in KWin::Scene::paintSimpleScreen(int, QRegion) () at /usr/lib/libkwin.so.5
#21 0x00007f258e77fa43 in  () at /usr/lib/libkwin.so.5
#22 0x00007f258e76ddc4 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#23 0x00007f258e79d55f in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#24 0x00007f258c6e35ff in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.9
#25 0x00007f258e79d50a in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#26 0x00007f258c6e35ff in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.9
#27 0x00007f258e79d50a in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#28 0x00007f258e76da6d in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&) () at /usr/lib/libkwin.so.5
#29 0x00007f258e784298 in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib/libkwin.so.5
#30 0x00007f258e75d9d7 in KWin::Compositor::performCompositing() () at /usr/lib/libkwin.so.5
#31 0x00007f258cbc5473 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#32 0x00007f258d87de0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#33 0x00007f258d885581 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#34 0x00007f258cb98de0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#35 0x00007f258cbec6ae in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#36 0x00007f258cbea618 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#37 0x00007f258232517d in  () at /usr/lib/libQt5XcbQpa.so.5
#38 0x00007f258cb9723a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#39 0x00007f258cb9f73c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#40 0x00007f258eb03495 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#41 0x00000035c8020291 in __libc_start_main () at /usr/lib/libc.so.6
#42 0x000000000040069a in _start ()

Reported using DrKonqi