Bug 364881

Application: kwin_x11 (5.6.4)

Qt Version: 5.6.1
Frameworks Version: 5.22.0
Operating System: Linux 4.6.2-1-default x86_64
Distribution: "openSUSE Tumbleweed (20160625) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Had just opened the about systemsettings dialog when kwin stopped and restarted. Had just upgraded my distribution from OpenSUSE Leap to Tumbleweed

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 0x7f24d1c73940 (LWP 1349))]

Thread 7 (Thread 0x7f24b7f97700 (LWP 1361)):
#0  0x00007f24d13dca1d in poll () at /lib64/libc.so.6
#1  0x00007f24cee96410 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f24cee981a9 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f24b8a41579 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f24cf1662d8 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f24d16a6474 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f24d13e53ed in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f24b608e700 (LWP 1362)):
#0  0x00007f24d13de0a3 in select () at /lib64/libc.so.6
#1  0x00007f24cf38f30f in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f24cf390db4 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f24cf3912ca in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f24cf33b76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f24cf1613b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f24c81389b5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f24cf1662d8 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f24d16a6474 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24d13e53ed in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f24a7fff700 (LWP 1370)):
#0  0x00007f24d13de0a3 in select () at /lib64/libc.so.6
#1  0x00007f24cf38f30f in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f24cf390db4 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f24cf3912ca in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f24cf33b76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f24cf1613b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f24c91c01e5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f24cf1662d8 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f24d16a6474 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24d13e53ed in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f24a6ffe700 (LWP 1379)):
#0  0x00007f24d16ac09f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f24ce0c6fc4 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f24ce0c7009 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f24d16a6474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f24d13e53ed in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f24192f8700 (LWP 1942)):
#0  0x00007f24d16ac09f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f24a46d2e43 in  () at /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f24a46d2587 in  () at /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f24d16a6474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f24d13e53ed in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f24b4e48700 (LWP 1976)):
#0  0x00007f24d13de0a3 in select () at /lib64/libc.so.6
#1  0x00007f24cf38f30f in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f24cf390db4 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f24cf3912ca in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f24cf33b76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f24cf1613b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f24c91c01e5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f24cf1662d8 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f24d16a6474 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24d13e53ed in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f24d1c73940 (LWP 1349)):
[KCrash Handler]
#6  0x00007f24c91ab690 in QQmlBinding::write(QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f24c91ac3e7 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f24c91b5f05 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f24c913fdbe in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f24c913fe87 in QQmlComponentPrivate::completeCreate() () at /usr/lib64/libQt5Qml.so.5
#11 0x00007f24c913fcf0 in QQmlComponent::create(QQmlContext*) () at /usr/lib64/libQt5Qml.so.5
#12 0x00007f24b41ce5a7 in  () at /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#13 0x00007f24d100a9b9 in  () at /usr/lib64/libkwin.so.5
#14 0x00007f24d0ef8aa9 in KWin::Client::createDecoration(QRect const&) () at /usr/lib64/libkwin.so.5
#15 0x00007f24d0ef946d in KWin::Client::updateDecoration(bool, bool) () at /usr/lib64/libkwin.so.5
#16 0x00007f24d0f51393 in KWin::Client::manage(unsigned int, bool) () at /usr/lib64/libkwin.so.5
#17 0x00007f24d0edc81f in KWin::Workspace::createClient(unsigned int, bool) () at /usr/lib64/libkwin.so.5
#18 0x00007f24d0f38a17 in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () at /usr/lib64/libkwin.so.5
#19 0x00007f24cf33a8af in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f24b8a42f55 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#21 0x00007f24b8a43eeb in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#22 0x00007f24cf36bcf9 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#23 0x00007f24d0083aec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007f24d0088f8f in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#25 0x00007f24cf33da20 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f24cf33f99c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#27 0x00007f24cf3911b2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f24b8ab5b9d in  () at /usr/lib64/libQt5XcbQpa.so.5
#29 0x00007f24cf33b76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f24cf343f6c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#31 0x00007f24d18c1ebe in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#32 0x00007f24d131d741 in __libc_start_main () at /lib64/libc.so.6
#33 0x0000000000400809 in _start ()

Reported using DrKonqi