Application: kwin_x11 (5.7.2)

Qt Version: 5.7.0
Frameworks Version: 5.24.0
Operating System: Linux 4.4.15-1-lts x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
J'ai ouvert Firefox et dolphin
- Unusual behavior I noticed:
Il m'était impossible d'utiliser un autre bureau virtuel. Tous se basculent automatiquement sur le premier bureau virtuel et ca crash à la fin
- Custom settings of the application:

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f40ea104840 (LWP 636))]

Thread 7 (Thread 0x7f4025d76700 (LWP 2502)):
#0  0x00007f40e992b791 in ppoll () from /usr/lib/libc.so.6
#1  0x00007f40e6ffa959 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () from /usr/lib/libQt5Core.so.5
#2  0x00007f40e6ffc248 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#3  0x00007f40e6fa90da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f40e6dcc0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#5  0x00007f40e1430445 in ?? () from /usr/lib/libQt5Qml.so.5
#6  0x00007f40e6dd0d78 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007f40e9bf5484 in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007f40e99346dd in clone () from /usr/lib/libc.so.6

Thread 6 (Thread 0x7f40affff700 (LWP 729)):
#0  0x00007f40e9bfb0af in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f40e5f44ac4 in ?? () from /usr/lib/libQt5Script.so.5
#2  0x00007f40e5f44b09 in ?? () from /usr/lib/libQt5Script.so.5
#3  0x00007f40e9bf5484 in start_thread () from /usr/lib/libpthread.so.0
#4  0x00007f40e99346dd in clone () from /usr/lib/libc.so.6

Thread 5 (Thread 0x7f40b94d4700 (LWP 723)):
#0  0x00007f40e9bfb0af in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f40c58f03f3 in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f40c58efb37 in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f40e9bf5484 in start_thread () from /usr/lib/libpthread.so.0
#4  0x00007f40e99346dd in clone () from /usr/lib/libc.so.6

Thread 4 (Thread 0x7f40c6f5a700 (LWP 715)):
#0  0x00007f40e6dc7f49 in QMutex::lock() () from /usr/lib/libQt5Core.so.5
#1  0x00007f40e6fad1dc in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#2  0x00007f40e6ffc08a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#3  0x00007f40e6fa90da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f40e6dcc0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#5  0x00007f40e1430445 in ?? () from /usr/lib/libQt5Qml.so.5
#6  0x00007f40e6dd0d78 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007f40e9bf5484 in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007f40e99346dd in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7f40cd829700 (LWP 656)):
#0  0x00007f40e992b791 in ppoll () from /usr/lib/libc.so.6
#1  0x00007f40e6ffa959 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () from /usr/lib/libQt5Core.so.5
#2  0x00007f40e6ffc248 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#3  0x00007f40e6fa90da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f40e6dcc0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#5  0x00007f40e05fbe75 in ?? () from /usr/lib/libQt5DBus.so.5
#6  0x00007f40e6dd0d78 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007f40e9bf5484 in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007f40e99346dd in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7f40cf747700 (LWP 652)):
#0  0x00007f40e992b6cd in poll () from /usr/lib/libc.so.6
#1  0x00007f40e8a8c8e0 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f40e8a8e679 in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007f40d01f3469 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f40e6dd0d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f40e9bf5484 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f40e99346dd in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f40ea104840 (LWP 636)):
[KCrash Handler]
#5  0x00007f40e2275320 in KWin::GLShader::resolveLocations() () from /usr/lib/libkwinglutils.so.8
#6  0x00007f40e2275632 in KWin::GLShader::setUniform(KWin::GLShader::ColorUniform, QVector4D const&) () from /usr/lib/libkwinglutils.so.8
#7  0x00007f40e22778d3 in ?? () from /usr/lib/libkwinglutils.so.8
#8  0x00007f40e631224e in ?? () from /usr/lib/libkwin4_effect_builtins.so.1
#9  0x00007f40e6312bf7 in ?? () from /usr/lib/libkwin4_effect_builtins.so.1
#10 0x00007f40e94ff6fe in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.5
#11 0x00007f40e627beb2 in ?? () from /usr/lib/libkwin4_effect_builtins.so.1
#12 0x00007f40e94ff6fe in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.5
#13 0x00007f40e6776501 in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.8
#14 0x00007f40e94ff6fe in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.5
#15 0x00007f40e94ceb21 in ?? () from /usr/lib/libkwin.so.5
#16 0x00007f40e94ff5aa in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.5
#17 0x00007f40e67763a1 in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.8
#18 0x00007f40e94ff54e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.5
#19 0x00007f40e67763a1 in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.8
#20 0x00007f40e94ff54e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.5
#21 0x00007f40e62a5428 in ?? () from /usr/lib/libkwin4_effect_builtins.so.1
#22 0x00007f40e94ff54e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.5
#23 0x00007f40e94d5e99 in ?? () from /usr/lib/libkwin.so.5
#24 0x00007f40e94d37fb in ?? () from /usr/lib/libkwin.so.5
#25 0x00007f40e94e6f43 in ?? () from /usr/lib/libkwin.so.5
#26 0x00007f40e94d52a4 in ?? () from /usr/lib/libkwin.so.5
#27 0x00007f40e94ff32f in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwin.so.5
#28 0x00007f40e67762ef in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.8
#29 0x00007f40e94ff2da in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwin.so.5
#30 0x00007f40e67762ef in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.8
#31 0x00007f40e94ff2da in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwin.so.5
#32 0x00007f40e67762ef in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.8
#33 0x00007f40e94ff2da in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwin.so.5
#34 0x00007f40e94d4f46 in ?? () from /usr/lib/libkwin.so.5
#35 0x00007f40e94ed988 in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () from /usr/lib/libkwin.so.5
#36 0x00007f40e94c4ffb in KWin::Compositor::performCompositing() () from /usr/lib/libkwin.so.5
#37 0x00007f40e6fd7303 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#38 0x00007f40e7c8ae3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#39 0x00007f40e7c925b1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#40 0x00007f40e6faac80 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#41 0x00007f40e6ffe51e in QTimerInfoList::activateTimers() () from /usr/lib/libQt5Core.so.5
#42 0x00007f40e6ffc4a8 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#43 0x00007f40d026c0fd in ?? () from /usr/lib/libQt5XcbQpa.so.5
#44 0x00007f40e6fa90da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#45 0x00007f40e6fb15cc in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#46 0x00007f40e9e144b5 in kdemain () from /usr/lib/libkdeinit5_kwin_x11.so
#47 0x00007f40e986d741 in __libc_start_main () from /usr/lib/libc.so.6
#48 0x0000000000400769 in _start ()

Possible duplicates by query: bug 356141.

Reported using DrKonqi