Application: kwin_x11 (5.17.5)

Qt Version: 5.13.2
Frameworks Version: 5.68.0
Operating System: Linux 5.6.11-200.fc31.x86_64 x86_64
Distribution: "Fedora release 31 (Thirty One)"

-- Information about the crash:
- What I was doing when the application crashed:

Hello,
I've just started the new session of my user, and inform message about Kwin crash appeared.

It was tihrd time in a row. So the user expiriece could be described as follow:

- Given
    user turn on the pc
- And
    enters his credentials on the login screen
- Then
    user is able to see the KDE loading progress bar
- Then
    user is able to see the main panel 
- Then
    message about crash appeared

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 0x7fb8165eb200 (LWP 2878))]

Thread 5 (Thread 0x7fb7f1226700 (LWP 3083)):
#0  0x00007fb81b453d45 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fb81b9d474a in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQt5Script.so.5
#2  0x00007fb81b9d476f in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQt5Script.so.5
#3  0x00007fb81b44d4e2 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fb81d5b16a3 in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fb7f32ed700 (LWP 3031)):
#0  0x00007fb81b453d45 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fb7f37db19b in util_queue_thread_func () from /usr/lib64/dri/i965_dri.so
#2  0x00007fb7f37dadab in impl_thrd_routine () from /usr/lib64/dri/i965_dri.so
#3  0x00007fb81b44d4e2 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fb81d5b16a3 in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fb801de8700 (LWP 3013)):
#0  0x00007fb81d5a6b36 in ppoll () from /lib64/libc.so.6
#1  0x00007fb81c0e6d19 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () from /lib64/libQt5Core.so.5
#2  0x00007fb81c0e7f61 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#3  0x00007fb81c09423b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007fb81bee4cd5 in QThread::exec() () from /lib64/libQt5Core.so.5
#5  0x00007fb81ab7e399 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#6  0x00007fb81bee5e26 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007fb81b44d4e2 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fb81d5b16a3 in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fb803fff700 (LWP 2933)):
#0  0x00007fb81d5a6b36 in ppoll () from /lib64/libc.so.6
#1  0x00007fb81c0e6d19 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () from /lib64/libQt5Core.so.5
#2  0x00007fb81c0e7f61 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#3  0x00007fb81c09423b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007fb81bee4cd5 in QThread::exec() () from /lib64/libQt5Core.so.5
#5  0x00007fb81a4d7f6a in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#6  0x00007fb81bee5e26 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007fb81b44d4e2 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fb81d5b16a3 in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fb8165eb200 (LWP 2878)):
[KCrash Handler]
#6  0x000055bd74516650 in ?? ()
#7  0x00007fb81bb4b127 in KWin::DimInactiveEffect::canDimWindow(KWin::EffectWindow const*) const () from /lib64/libkwin4_effect_builtins.so.1
#8  0x00007fb81bb4bf65 in KWin::DimInactiveEffect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /lib64/libkwin4_effect_builtins.so.1
#9  0x00007fb81d2a2b57 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /lib64/libkwin.so.5
#10 0x00007fb81d341f06 in KWin::Scene::paintWindow(KWin::Scene::Window*, int, QRegion, KWin::WindowQuadList) () from /lib64/libkwin.so.5
#11 0x00007fb81d33e8c5 in KWin::Scene::paintSimpleScreen(int, QRegion) () from /lib64/libkwin.so.5
#12 0x00007fb8081814e7 in KWin::SceneOpenGL2::paintSimpleScreen(int, QRegion) () from /usr/lib64/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#13 0x00007fb81d3414e0 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwin.so.5
#14 0x00007fb81d2a2902 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwin.so.5
#15 0x00007fb81b254703 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwineffects.so.12
#16 0x00007fb81d2a28b1 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwin.so.5
#17 0x00007fb81b254703 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwineffects.so.12
#18 0x00007fb81d2a28b1 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwin.so.5
#19 0x00007fb81b254703 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwineffects.so.12
#20 0x00007fb81d2a28b1 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwin.so.5
#21 0x00007fb81b254703 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwineffects.so.12
#22 0x00007fb81d2a28b1 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /lib64/libkwin.so.5
#23 0x00007fb81d341193 in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () from /lib64/libkwin.so.5
#24 0x00007fb808189e4e in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () from /usr/lib64/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#25 0x00007fb81d268681 in KWin::Compositor::performCompositing() () from /lib64/libkwin.so.5
#26 0x00007fb81c0c0795 in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#27 0x00007fb81ca09ab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#28 0x00007fb81ca13150 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#29 0x00007fb81c095448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#30 0x00007fb81c0e9b48 in QTimerInfoList::activateTimers() () from /lib64/libQt5Core.so.5
#31 0x00007fb81c0e808f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#32 0x00007fb8094be112 in QXcbUnixEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5XcbQpa.so.5
#33 0x00007fb81c09423b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#34 0x00007fb81c09c116 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#35 0x00007fb81d683648 in kdemain () from /lib64/libkdeinit5_kwin_x11.so
#36 0x00007fb81d4d71a3 in __libc_start_main () from /lib64/libc.so.6
#37 0x000055bd720850ae in _start ()
[Inferior 1 (process 2878) detached]

Possible duplicates by query: bug 421666, bug 421059, bug 420372, bug 420271, bug 419946.

Reported using DrKonqi