Bug 378291

Application: kwin_x11 (5.8.6)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.4.49-16-default x86_64
Distribution: "openSUSE Leap 42.2"

-- Information about the crash:
- What I was doing when the application crashed:
Just made the winning move in Freecell.  Frequent but unpredictable crashes when clicking on KWIN.  No consistancy observed when it happens.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2171b8b940 (LWP 2484))]

Thread 9 (Thread 0x7f214edee700 (LWP 4990)):
#0  0x00007f21712f1b03 in select () at /lib64/libc.so.6
#1  0x00007f216e9c1849 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f216e9c30c3 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f216e9c3527 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f216e972fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f216e7adf1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f21693989c8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f216e7b29e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f21715ba734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f21712f8d3d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f20a6a91700 (LWP 4422)):
#0  0x00007f21715bf0af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f216e7b365b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f2169a6d4eb in  () at /usr/lib64/libQt5Quick.so.5
#3  0x00007f2169a6d995 in  () at /usr/lib64/libQt5Quick.so.5
#4  0x00007f216e7b29e9 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f21715ba734 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f21712f8d3d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f20a7492700 (LWP 4421)):
#0  0x00007f21715bf0af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f216e7b365b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f2169a6d4eb in  () at /usr/lib64/libQt5Quick.so.5
#3  0x00007f2169a6d995 in  () at /usr/lib64/libQt5Quick.so.5
#4  0x00007f216e7b29e9 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f21715ba734 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f21712f8d3d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f214d12f700 (LWP 4420)):
#0  0x00007f216e9c31ef in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#1  0x00007f216e9c3527 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f216e972fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f216e7adf1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#4  0x00007f21693989c8 in  () at /usr/lib64/libQt5Qml.so.5
#5  0x00007f216e7b29e9 in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007f21715ba734 in start_thread () at /lib64/libpthread.so.0
#7  0x00007f21712f8d3d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f213ffff700 (LWP 4419)):
#0  0x00007f21712f1b03 in select () at /lib64/libc.so.6
#1  0x00007f216e9c1849 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f216e9c30c3 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f216e9c3527 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f216e972fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f216e7adf1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f21693989c8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f216e7b29e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f21715ba734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f21712f8d3d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f213f7fe700 (LWP 2615)):
#0  0x00007f21715bf0af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f216d94193b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f216d941969 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f21715ba734 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f21712f8d3d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f214e130700 (LWP 2590)):
#0  0x00007f2171308fb0 in __fdelt_warn () at /lib64/libc.so.6
#1  0x00007f216e9c1b3d in QEventDispatcherUNIXPrivate::initThreadWakeUp() () at /usr/lib64/libQt5Core.so.5
#2  0x00007f216e9c309c in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f216e9c3527 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f216e972fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f216e7adf1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f21693989c8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f216e7b29e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f21715ba734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f21712f8d3d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f214ffff700 (LWP 2543)):
#0  0x00007ffeb75feadc in clock_gettime ()
#1  0x00007f2171305806 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f216e85d826 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007f216e9c3989 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007f216e9c3f05 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f216e9c358a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f216e972fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f216e7adf1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f21685791d5 in  () at /usr/lib64/libQt5DBus.so.5
#9  0x00007f216e7b29e9 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f21715ba734 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f21712f8d3d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f2171b8b940 (LWP 2484)):
[KCrash Handler]
#6  0x00007f2169384de0 in QQmlBinding::write(QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f216938625a in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f216938f306 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f216931d94b in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f216931da07 in QQmlComponentPrivate::completeCreate() () at /usr/lib64/libQt5Qml.so.5
#11 0x00007f216931d890 in QQmlComponent::create(QQmlContext*) () at /usr/lib64/libQt5Qml.so.5
#12 0x00007f214e36e7cf in  () at /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#13 0x00007f2170f1a097 in  () at /usr/lib64/libkwin.so.5
#14 0x00007f2170dfe761 in KWin::Client::createDecoration(QRect const&) () at /usr/lib64/libkwin.so.5
#15 0x00007f2170dff47b in KWin::Client::updateDecoration(bool, bool) () at /usr/lib64/libkwin.so.5
#16 0x00007f2170e60db6 in KWin::Client::manage(unsigned int, bool) () at /usr/lib64/libkwin.so.5
#17 0x00007f2170de27e4 in KWin::Workspace::createClient(unsigned int, bool) () at /usr/lib64/libkwin.so.5
#18 0x00007f2170e4efc0 in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () at /usr/lib64/libkwin.so.5
#19 0x00007f216e972270 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f2157595be4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#21 0x00007f2157597c3b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#22 0x00007f216e9a0166 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#23 0x00007f216f67be3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007f216f68049a in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#25 0x00007f216e974fc5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f216e976daa in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#27 0x00007f216e9c34b4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f21575f994d in  () at /usr/lib64/libQt5XcbQpa.so.5
#29 0x00007f216e972fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f216e97aec6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#31 0x00007f21717d89cc in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#32 0x00007f217122f6e5 in __libc_start_main () at /lib64/libc.so.6
#33 0x0000000000400809 in _start ()

Reported using DrKonqi