Application: kwin_x11 (5.9.5)

Qt Version: 5.7.1
Frameworks Version: 5.34.0
Operating System: Linux 4.11.3-202.fc25.x86_64 x86_64
Distribution: "Fedora release 25 (Twenty Five)"

-- Information about the crash:
- What I was doing when the application crashed:

I was sending a file to be printed by Brother HL1102. Printer received the documented just fine, but Kwin got crashed. 

- Unusual behavior I noticed:

Kwin crashed in the moment that I cliked  on the "Print" buttom (I was using WPS Writer).

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 0x7f0dca14e940 (LWP 1955))]

Thread 6 (Thread 0x7f0da56cc700 (LWP 7651)):
#0  0x00007f0dd9551001 in ppoll () at /lib64/libc.so.6
#1  0x00007f0dda355971 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /lib64/libQt5Core.so.5
#2  0x00007f0dda356e86 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#3  0x00007f0dda30a68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f0dda1675e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#5  0x00007f0de0c6f4e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#6  0x00007f0dda16b9ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f0ddc0f373a in start_thread () at /lib64/libpthread.so.0
#8  0x00007f0dd955ce7f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f0db5718700 (LWP 2723)):
#0  0x00007f0dd9551001 in ppoll () at /lib64/libc.so.6
#1  0x00007f0dda355971 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /lib64/libQt5Core.so.5
#2  0x00007f0dda356e86 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#3  0x00007f0dda30a68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f0dda1675e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#5  0x00007f0de0c6f4e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#6  0x00007f0dda16b9ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f0ddc0f373a in start_thread () at /lib64/libpthread.so.0
#8  0x00007f0dd955ce7f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f0da4ecb700 (LWP 2192)):
#0  0x00007f0ddc0f9460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0de1a1a2f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f0de1a1a339 in  () at /lib64/libQt5Script.so.5
#3  0x00007f0ddc0f373a in start_thread () at /lib64/libpthread.so.0
#4  0x00007f0dd955ce7f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f0db6719700 (LWP 2142)):
#0  0x00007f0dd9551001 in ppoll () at /lib64/libc.so.6
#1  0x00007f0dda355971 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /lib64/libQt5Core.so.5
#2  0x00007f0dda356e86 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#3  0x00007f0dda30a68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f0dda1675e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#5  0x00007f0de0c6f4e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#6  0x00007f0dda16b9ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f0ddc0f373a in start_thread () at /lib64/libpthread.so.0
#8  0x00007f0dd955ce7f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f0dca14a700 (LWP 2011)):
#0  0x00007f0dd9550f3d in poll () at /lib64/libc.so.6
#1  0x00007f0dd0a8a166 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f0dd0a8a27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0dda3596eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f0dda30a68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f0dda1675e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f0dde8a1fb9 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#7  0x00007f0dda16b9ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f0ddc0f373a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0dd955ce7f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f0dca14e940 (LWP 1955)):
[KCrash Handler]
#6  0x0000000000000000 in  ()
#7  0x00007f0dda338878 in QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) () at /lib64/libQt5Core.so.5
#8  0x00007f0de1a5cd2f in QScriptEnginePrivate::qobjectData(QObject*) () at /lib64/libQt5Script.so.5
#9  0x00007f0de1a5cdf4 in QScriptEnginePrivate::newQObject(QObject*, QScriptEngine::ValueOwnership, QFlags<QScriptEngine::QObjectWrapOption> const&) () at /lib64/libQt5Script.so.5
#10 0x00007f0de1a5d0e2 in QScriptEngine::newQObject(QObject*, QScriptEngine::ValueOwnership, QFlags<QScriptEngine::QObjectWrapOption> const&) () at /lib64/libQt5Script.so.5
#11 0x00007f0de243ff2c in KWin::effectWindowToScriptValue(QScriptEngine*, KWin::EffectWindow* const&) () at /lib64/libkwin.so.5
#12 0x00007f0de1a5d395 in QScriptEnginePrivate::create(QTJSC::ExecState*, int, void const*) () at /lib64/libQt5Script.so.5
#13 0x00007f0de1a860d6 in QScript::QObjectConnectionManager::execute(int, void**) () at /lib64/libQt5Script.so.5
#14 0x00007f0de1a8e3e1 in QScript::QObjectConnectionManager::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libQt5Script.so.5
#15 0x00007f0dda33289b in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#16 0x00007f0de204e7d8 in KWin::EffectsHandler::desktopPresenceChanged(KWin::EffectWindow*, int, int) () at /lib64/libkwineffects.so.10
#17 0x00007f0de20501a1 in KWin::EffectsHandler::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libkwineffects.so.10
#18 0x00007f0dda3337e9 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#19 0x00007f0ddab4becc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#20 0x00007f0ddab53671 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#21 0x00007f0dda30b6fa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#22 0x00007f0dda30dde0 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#23 0x00007f0dda356cfb in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#24 0x00007f0dc98b370d in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5XcbQpa.so.5
#25 0x00007f0dda30a68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#26 0x00007f0dda31218c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#27 0x00007f0de2766002 in kdemain () at /lib64/libkdeinit5_kwin_x11.so
#28 0x00007f0dd9475401 in __libc_start_main () at /lib64/libc.so.6
#29 0x000055ac6537dcca in _start ()

Possible duplicates by query: bug 376696, bug 364826.

Reported using DrKonqi