Bug 378825

Application: kwin_x11 (5.9.4)

Qt Version: 5.8.0
Frameworks Version: 5.32.0
Operating System: Linux 4.10.9-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Playing the game PAYDAY 2 fullscreen, browsing websites with the steam overlay.
- What happened:
Everything was fine until I suddenly couldn't interact with the window anymore. I tried Alt-tabbing, switching virtual desktops, going to another tty (that one worked) and coming back.
My graphics card's fan then suddenly went silent, the actions I tried to perform were executed as if they had been queued up, and I was presented with the bug report window.

DrKonqi says that the backtrace is useful, so I figured it could be interesting to report the bug.

I did not try to reproduce, as this happened after a long time, and without any obvious trigger.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff141ee7840 (LWP 1327))]

Thread 6 (Thread 0x7ff1075d9700 (LWP 1458)):
#0  0x00007ff13ab8c756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff13df03234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007ff13df03279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007ff13ab862e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff14194a54f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7ff10c80b700 (LWP 1437)):
#0  0x00007ff13ab8c756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff114943b9b in  () at /usr/lib/xorg/modules/dri/r600_dri.so
#2  0x00007ff1149438c7 in  () at /usr/lib/xorg/modules/dri/r600_dri.so
#3  0x00007ff13ab862e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff14194a54f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7ff117b99700 (LWP 1429)):
#0  0x00007ff14194076b in ppoll () at /usr/lib/libc.so.6
#1  0x00007ff13efc42f9 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff13efc596a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007ff13ef7289a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff13ed94a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007ff1398ad025 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007ff13ed996d8 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007ff13ab862e7 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007ff14194a54f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7ff12653d700 (LWP 1335)):
#0  0x00007ff14194076b in ppoll () at /usr/lib/libc.so.6
#1  0x00007ff13efc42f9 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff13efc596a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007ff13ef7289a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff13ed94a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007ff138a57125 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007ff13ed996d8 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007ff13ab862e7 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007ff14194a54f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7ff12868d700 (LWP 1328)):
#0  0x00007ff14194067d in poll () at /usr/lib/libc.so.6
#1  0x00007ff140a598e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007ff140a5b679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007ff129769239 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007ff13ed996d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007ff13ab862e7 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007ff14194a54f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7ff141ee7840 (LWP 1327)):
[KCrash Handler]
#6  0x00007ff13f4fb808 in QOpenGLContext::format() const () at /usr/lib/libQt5Gui.so.5
#7  0x00007ff139f58c9b in QSGBatchRenderer::Renderer::Renderer(QSGDefaultRenderContext*) () at /usr/lib/libQt5Quick.so.5
#8  0x00007ff139f84231 in QSGDefaultRenderContext::createRenderer() () at /usr/lib/libQt5Quick.so.5
#9  0x00007ff139fdb088 in QQuickWindowPrivate::syncSceneGraph() () at /usr/lib/libQt5Quick.so.5
#10 0x00007ff139f76b6f in  () at /usr/lib/libQt5Quick.so.5
#11 0x00007ff139f77b25 in  () at /usr/lib/libQt5Quick.so.5
#12 0x00007ff13f4cdd05 in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#13 0x00007ff139fe44a5 in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#14 0x00007ff07a34d7bb in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/libKF5PlasmaQuick.so.5
#15 0x00007ff13fc5634c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#16 0x00007ff13fc5db61 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007ff13ef74440 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#18 0x00007ff13f4c2d2d in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/libQt5Gui.so.5
#19 0x00007ff13f4c393d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#20 0x00007ff13f49f44b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#21 0x00007ff1297c9df6 in  () at /usr/lib/libQt5XcbQpa.so.5
#22 0x00007ff13ef7289a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#23 0x00007ff13ef7ade4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#24 0x00007ff141c0b391 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#25 0x00007ff14187e511 in __libc_start_main () at /usr/lib/libc.so.6
#26 0x000000000040069a in _start ()

Reported using DrKonqi