Application: kwin_x11 (5.8.4)

Qt Version: 5.6.2
Frameworks Version: 5.27.0
Operating System: Linux 4.8.13-200.fc24.x86_64 x86_64
Distribution: "Fedora release 24 (Twenty Four)"

-- Information about the crash:
After boot and logging into KDE, KWin crashed.  Using Fedora 24 with KDE5 desktop.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc02773f980 (LWP 1705))]

Thread 6 (Thread 0x7fc00ddfc700 (LWP 2046)):
#0  0x00007fc03c6b5bd0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fc041ef21a4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQt5Script.so.5
#2  0x00007fc041ef21e9 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQt5Script.so.5
#3  0x00007fc03793b754 in ?? () from /usr/lib64/nvidia-304xx/libGL.so.1
#4  0x00007fc03c6b05ca in start_thread () from /lib64/libpthread.so.0
#5  0x00007fc03982b0ed in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fc00effe700 (LWP 1955)):
[KCrash Handler]
#6  0x00007fc03a577acf in QLockFilePrivate::tryLock_sys() () from /lib64/libQt5Core.so.5
#7  0x00007fc03a5236d0 in QLockFile::tryLock(int) () from /lib64/libQt5Core.so.5
#8  0x00007fc03f072439 in KConfigIniBackend::lock() () from /lib64/libKF5ConfigCore.so.5
#9  0x00007fc03f05c0e0 in KConfig::sync() () from /lib64/libKF5ConfigCore.so.5
#10 0x00007fc01deeaea5 in QtPrivate::QFunctorSlotObject<KWin::X11StandalonePlatform::createOpenGLSafePoint(KWin::Platform::OpenGLSafePoint)::{lambda()#1}, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () from /usr/lib64/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#11 0x00007fc03a5fe0fc in QMetaObject::activate(QObject*, int, int, void**) () from /lib64/libQt5Core.so.5
#12 0x00007fc03a60a1c8 in QTimer::timerEvent(QTimerEvent*) () from /lib64/libQt5Core.so.5
#13 0x00007fc03a5fedcb in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#14 0x00007fc03ae62e4c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#15 0x00007fc03ae6832f in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#16 0x00007fc03a5d59da in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#17 0x00007fc03a624cbb in QTimerInfoList::activateTimers() () from /lib64/libQt5Core.so.5
#18 0x00007fc03a6237cc in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#19 0x00007fc03a5d481a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#20 0x00007fc03a433353 in QThread::exec() () from /lib64/libQt5Core.so.5
#21 0x00007fc03a4379ba in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#22 0x00007fc03793b754 in ?? () from /usr/lib64/nvidia-304xx/libGL.so.1
#23 0x00007fc03c6b05ca in start_thread () from /lib64/libpthread.so.0
#24 0x00007fc03982b0ed in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fc00ffff700 (LWP 1852)):
#0  0x00007fc03a6234b4 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () from /lib64/libQt5Core.so.5
#1  0x00007fc03a6237fa in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#2  0x00007fc03a5d481a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#3  0x00007fc03a433353 in QThread::exec() () from /lib64/libQt5Core.so.5
#4  0x00007fc041147525 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#5  0x00007fc03a4379ba in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#6  0x00007fc03793b754 in ?? () from /usr/lib64/nvidia-304xx/libGL.so.1
#7  0x00007fc03c6b05ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007fc03982b0ed in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fc01e90a700 (LWP 1778)):
#0  0x00007fc039821343 in select () from /lib64/libc.so.6
#1  0x00007fc03a621bcf in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () from /lib64/libQt5Core.so.5
#2  0x00007fc03a6232c4 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () from /lib64/libQt5Core.so.5
#3  0x00007fc03a6237fa in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007fc03a5d481a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fc03a433353 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fc03c1ad559 in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#7  0x00007fc03a4379ba in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007fc03793b754 in ?? () from /usr/lib64/nvidia-304xx/libGL.so.1
#9  0x00007fc03c6b05ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007fc03982b0ed in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fc01fff3700 (LWP 1757)):
#0  0x00007fc03981f56d in poll () from /lib64/libc.so.6
#1  0x00007fc03bf7ff80 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007fc03bf81b79 in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007fc020ca1f99 in QXcbEventReader::run() () from /lib64/libQt5XcbQpa.so.5
#4  0x00007fc03a4379ba in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007fc03793b754 in ?? () from /usr/lib64/nvidia-304xx/libGL.so.1
#6  0x00007fc03c6b05ca in start_thread () from /lib64/libpthread.so.0
#7  0x00007fc03982b0ed in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fc02773f980 (LWP 1705)):
#0  0x00007fc03c6b5bd0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fc03bf801f7 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007fc03bf8189f in wait_for_reply () from /lib64/libxcb.so.1
#3  0x00007fc03bf819b3 in xcb_wait_for_reply () from /lib64/libxcb.so.1
#4  0x00007fc042827daf in KWin::Workspace::xStackingOrder() const () from /lib64/libkwin.so.5
#5  0x00007fc042886dd3 in KWin::Compositor::performCompositing() () from /lib64/libkwin.so.5
#6  0x00007fc03a5fedcb in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#7  0x00007fc03ae62e4c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#8  0x00007fc03ae6832f in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#9  0x00007fc03a5d59da in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#10 0x00007fc03a624cbb in QTimerInfoList::activateTimers() () from /lib64/libQt5Core.so.5
#11 0x00007fc03a6237cc in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007fc020d171ad in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5XcbQpa.so.5
#13 0x00007fc03a5d481a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#14 0x00007fc03a5dc3bc in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#15 0x00007fc042c130c6 in kdemain () from /lib64/libkdeinit5_kwin_x11.so
#16 0x00007fc039748731 in __libc_start_main () from /lib64/libc.so.6
#17 0x000056233acb8ce9 in _start ()

Possible duplicates by query: bug 373358, bug 372114.

Reported using DrKonqi