Bug 409108

Application: kwin_x11 (5.16.1)

Qt Version: 5.12.4
Frameworks Version: 5.59.0
Operating System: Linux 5.1.14-arch1-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

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

was just casually trying to maximize a minimised windows.it happens occassionally from time to time.

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 0x7f584714bd00 (LWP 1004))]

Thread 6 (Thread 0x7f58277fe700 (LWP 1155)):
#0  0x00007f584d1e13c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f584dce0d4c in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f584dce0d69 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f584d1db57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f584f967f13 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f5834e86700 (LWP 1148)):
#0  0x00007f584d1e13c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5835378f5c in  () at /usr/lib/dri/i965_dri.so
#2  0x00007f5835378b58 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007f584d1db57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f584f967f13 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f5837d86700 (LWP 1136)):
#0  0x00007f584f95d586 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f584e465243 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f584e466796 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f584e4103ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f584e24b9c5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f584c98e969 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f584e24cbf0 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f584d1db57f in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f584f967f13 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f5845ae2700 (LWP 1083)):
#0  0x00007f584f95d586 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f584e465243 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f584e466796 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f584e4103ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f584e24b9c5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f584c3d7b37 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f584e24cbf0 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f584d1db57f in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f584f967f13 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f5846996700 (LWP 1048)):
#0  0x00007f584f95d497 in poll () at /usr/lib/libc.so.6
#1  0x00007f584e170630 in  () at /usr/lib/libxcb.so.1
#2  0x00007f584e1722db in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f5846cc2079 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f584e24cbf0 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f584d1db57f in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f584f967f13 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f584714bd00 (LWP 1004)):
[KCrash Handler]
#6  0x00007f584d152380 in KWin::GLTexture::matrix(KWin::TextureCoordinateType) const () at /usr/lib/libkwinglutils.so.12
#7  0x00007f58342d3a63 in  () at /usr/lib/qt/plugins/kwin/effects/plugins/libkwin4_effect_yetanothermagiclamp.so
#8  0x00007f58342d4bed in  () at /usr/lib/qt/plugins/kwin/effects/plugins/libkwin4_effect_yetanothermagiclamp.so
#9  0x00007f584f6e8874 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#10 0x00007f584df5e21c in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.12
#11 0x00007f584f6e8874 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#12 0x00007f584f6d6a5c in KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#13 0x00007f584f6e8702 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#14 0x00007f584df5e0ac in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.12
#15 0x00007f584f6e86a4 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#16 0x00007f584df5e0ac in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.12
#17 0x00007f584f6e86a4 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#18 0x00007f584df5e0ac in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.12
#19 0x00007f584f6e86a4 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#20 0x00007f584df6710b in KWin::AnimationEffect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.12
#21 0x00007f584f6e86a4 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#22 0x00007f584f6dd4b7 in KWin::Scene::paintWindow(KWin::Scene::Window*, int, QRegion, KWin::WindowQuadList) () at /usr/lib/libkwin.so.5
#23 0x00007f584f6db431 in KWin::Scene::paintGenericScreen(int, KWin::ScreenPaintData) () at /usr/lib/libkwin.so.5
#24 0x00007f5836b37b46 in  () at /usr/lib/qt/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#25 0x00007f584f6dc9ea in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#26 0x00007f584f6e8464 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#27 0x00007f584df5e000 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.12
#28 0x00007f584f6e840e in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#29 0x00007f584df5e000 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.12
#30 0x00007f584f6e840e in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#31 0x00007f584df5e000 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.12
#32 0x00007f584f6e840e in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#33 0x00007f584df5e000 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.12
#34 0x00007f584f6e840e in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#35 0x00007f584f6dc6cc in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () at /usr/lib/libkwin.so.5
#36 0x00007f5836b33b3f in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib/qt/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#37 0x00007f584f6cde13 in KWin::Compositor::performCompositing() () at /usr/lib/libkwin.so.5
#38 0x00007f584e43dcd5 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#39 0x00007f584ee0f485 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007f584ee189b1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#41 0x00007f584e411782 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#42 0x00007f584e46860d in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#43 0x00007f584e4668f9 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#44 0x00007f5846cc344f in  () at /usr/lib/libQt5XcbQpa.so.5
#45 0x00007f584e4103ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#46 0x00007f584e418056 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#47 0x00007f584fa38588 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#48 0x00007f584f892ee3 in __libc_start_main () at /usr/lib/libc.so.6
#49 0x000056134bcbf05e in _start ()
[Inferior 1 (process 1004) detached]

Reported using DrKonqi