Bug 357511

Application: kwin_x11 (5.4.3)

Qt Version: 5.5.1
Operating System: Linux 4.1.13-5-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
PC: board Q1900M, 8GB RAM, 1 TB HDD. OS: OpenSuSE Leap 42.1, KDE Plasma 5, opened applications: Claws Mail, Okular. When trying to open Slimjet Kwin suddenly crashes and restarts again (this case) or sometimes X system totally freezes. This behavior is deterministic. If using other applications too the crash comes irregularly.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5cb4a9d800 (LWP 1274))]

Thread 3 (Thread 0x7f5c98d8b700 (LWP 1318)):
#0  0x00007f5cb441b2b3 in select () at /lib64/libc.so.6
#1  0x00007f5cb2287179 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f5cb2288af5 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f5cb2288f3b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f5cb2231d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f5cb205361a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f5cac37adf8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f5cb205832f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f5cb3a880a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f5cb442204d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f5c8a9d2700 (LWP 1507)):
#0  0x00007f5cb441b2b3 in select () at /lib64/libc.so.6
#1  0x00007f5cb2287179 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f5cb2288af5 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f5cb2288f3b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f5cb2231d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f5cb205361a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f5cac37adf8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f5cb205832f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f5cb3a880a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f5cb442204d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f5cb4a9d800 (LWP 1274)):
[KCrash Handler]
#6  0x00007f5cac23f28f in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f5cac23f6f0 in QV4::ExecutionEngine::toVariant(QV4::Value const&, int, bool) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f5cac2fdaca in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f5cac367823 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f5cac37154a in  () at /usr/lib64/libQt5Qml.so.5
#11 0x00007f5cac2ffe2b in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib64/libQt5Qml.so.5
#12 0x00007f5cac2ffee7 in QQmlComponentPrivate::completeCreate() () at /usr/lib64/libQt5Qml.so.5
#13 0x00007f5cac2ffd70 in QQmlComponent::create(QQmlContext*) () at /usr/lib64/libQt5Qml.so.5
#14 0x00007f5c98daa77e in  () at /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#15 0x00007f5cb4063a1b in  () at /usr/lib64/libkwin.so.5
#16 0x00007f5cb3f5bf01 in  () at /usr/lib64/libkwin.so.5
#17 0x00007f5cb3f5ca19 in  () at /usr/lib64/libkwin.so.5
#18 0x00007f5cb3fa91c1 in  () at /usr/lib64/libkwin.so.5
#19 0x00007f5cb3f43b5b in KWin::Workspace::createClient(unsigned int, bool) () at /usr/lib64/libkwin.so.5
#20 0x00007f5cb3f91df3 in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () at /usr/lib64/libkwin.so.5
#21 0x00007f5cb2230fc0 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#22 0x00007f5c9c93f044 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#23 0x00007f5c9c94101b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#24 0x00007f5cb2264ac6 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#25 0x00007f5cb2f17e7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#26 0x00007f5cb2f1ccc8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#27 0x00007f5cb2233e95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f5cb2236057 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#29 0x00007f5cb2288ec4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f5c9c9a133d in  () at /usr/lib64/libQt5XcbQpa.so.5
#31 0x00007f5cb2231d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#32 0x00007f5cb22398f6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#33 0x00007f5cb46e9807 in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#34 0x00007f5cb435eb05 in __libc_start_main () at /lib64/libc.so.6
#35 0x000000000040085e in _start ()

Reported using DrKonqi