Application: kwin_x11 (5.5.4)
 (Compiled from sources)
Qt Version: 5.5.1
Operating System: Linux 4.4.0-gentoo-r1 x86_64
Distribution: "Gentoo Base System release 2.2"

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

I started KDE session as usual and KWin crashed after Plasma Desktop start.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f96ef145840 (LWP 6215))]

Thread 7 (Thread 0x7f96e75ef700 (LWP 6228)):
#0  pthread_cond_timedwait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f97034844e8 in QWaitConditionPrivate::wait_relative (time=30000, this=0x55ab1d1f14b0) at thread/qwaitcondition_unix.cpp:126
#2  QWaitConditionPrivate::wait (time=30000, this=0x55ab1d1f14b0) at thread/qwaitcondition_unix.cpp:134
#3  QWaitCondition::wait (this=this@entry=0x55ab1d2010f0, mutex=mutex@entry=0x55ab1d1f1250, time=30000) at thread/qwaitcondition_unix.cpp:208
#4  0x00007f970347fef3 in QThreadPoolThread::run (this=0x55ab1d2010e0) at thread/qthreadpool.cpp:127
#5  0x00007f9703483ce1 in QThreadPrivate::start (arg=0x55ab1d2010e0) at thread/qthread_unix.cpp:331
#6  0x00007f9704771572 in start_thread (arg=0x7f96e75ef700) at pthread_create.c:333
#7  0x00007f97051bac2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f96e6dee700 (LWP 6234)):
#0  0x00007f97051b3073 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f97036b756f in qt_safe_select (nfds=12, fdread=fdread@entry=0x7f96d8000a78, fdwrite=fdwrite@entry=0x7f96d8000d08, fdexcept=fdexcept@entry=0x7f96d8000f98, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f97036b9084 in QEventDispatcherUNIX::select (timeout=0x0, exceptfds=0x7f96d8000f98, writefds=0x7f96d8000d08, readfds=0x7f96d8000a78, nfds=<optimized out>, this=0x7f96d80008c0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f96d80008e0, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4  0x00007f97036b956e in QEventDispatcherUNIX::processEvents (this=0x7f96d80008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007f970365e912 in QEventLoop::exec (this=this@entry=0x7f96e6dedd50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f970347e3e6 in QThread::exec (this=this@entry=0x55ab1d30ea90) at thread/qthread.cpp:503
#7  0x00007f96fdfdbdc4 in QQmlThreadPrivate::run (this=0x55ab1d30ea90) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f9703483ce1 in QThreadPrivate::start (arg=0x55ab1d30ea90) at thread/qthread_unix.cpp:331
#9  0x00007f9704771572 in start_thread (arg=0x7f96e6dee700) at pthread_create.c:333
#10 0x00007f97051bac2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f96d593c700 (LWP 6253)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f96e57d867a in cnd_wait (mtx=0x55ab1d204828, cond=0x55ab1d204850) at /var/tmp/portage/media-libs/mesa-11.0.6/work/mesa-11.0.6/include/c11/threads_posix.h:154
#2  pipe_semaphore_wait (sema=0x55ab1d204828) at /var/tmp/portage/media-libs/mesa-11.0.6/work/mesa-11.0.6/src/gallium/auxiliary/os/os_thread.h:259
#3  radeon_drm_cs_emit_ioctl (param=param@entry=0x55ab1d2044e0) at /var/tmp/portage/media-libs/mesa-11.0.6/work/mesa-11.0.6/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c:644
#4  0x00007f96e57d7c36 in impl_thrd_routine (p=<optimized out>) at /var/tmp/portage/media-libs/mesa-11.0.6/work/mesa-11.0.6/include/c11/threads_posix.h:87
#5  0x00007f9704771572 in start_thread (arg=0x7f96d593c700) at pthread_create.c:333
#6  0x00007f97051bac2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f96d4f36700 (LWP 6262)):
#0  pthread_cond_timedwait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f97034844e8 in QWaitConditionPrivate::wait_relative (time=30000, this=0x55ab1d915ad0) at thread/qwaitcondition_unix.cpp:126
#2  QWaitConditionPrivate::wait (time=30000, this=0x55ab1d915ad0) at thread/qwaitcondition_unix.cpp:134
#3  QWaitCondition::wait (this=this@entry=0x55ab1d8e6d30, mutex=mutex@entry=0x55ab1d1f1250, time=30000) at thread/qwaitcondition_unix.cpp:208
#4  0x00007f970347fef3 in QThreadPoolThread::run (this=0x55ab1d8e6d20) at thread/qthreadpool.cpp:127
#5  0x00007f9703483ce1 in QThreadPrivate::start (arg=0x55ab1d8e6d20) at thread/qthread_unix.cpp:331
#6  0x00007f9704771572 in start_thread (arg=0x7f96d4f36700) at pthread_create.c:333
#7  0x00007f97051bac2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f96cffff700 (LWP 6263)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f97025b2c24 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f970268e960 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f97025b2c88 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f9704771572 in start_thread (arg=0x7f96cffff700) at pthread_create.c:333
#4  0x00007f97051bac2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f96cf765700 (LWP 6386)):
#0  0x00007f97051b3073 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f97036b756f in qt_safe_select (nfds=17, fdread=fdread@entry=0x7f96c806bb38, fdwrite=fdwrite@entry=0x7f96c806bdc8, fdexcept=fdexcept@entry=0x7f96c806c058, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f97036b9084 in QEventDispatcherUNIX::select (timeout=0x0, exceptfds=0x7f96c806c058, writefds=0x7f96c806bdc8, readfds=0x7f96c806bb38, nfds=<optimized out>, this=0x7f96c809d3f0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f96c806b9a0, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4  0x00007f97036b956e in QEventDispatcherUNIX::processEvents (this=0x7f96c809d3f0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007f970365e912 in QEventLoop::exec (this=this@entry=0x7f96cf764d50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f970347e3e6 in QThread::exec (this=this@entry=0x55ab1d466e80) at thread/qthread.cpp:503
#7  0x00007f96fdfdbdc4 in QQmlThreadPrivate::run (this=0x55ab1d466e80) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f9703483ce1 in QThreadPrivate::start (arg=0x55ab1d466e80) at thread/qthread_unix.cpp:331
#9  0x00007f9704771572 in start_thread (arg=0x7f96cf765700) at pthread_create.c:333
#10 0x00007f97051bac2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f96ef145840 (LWP 6215)):
[KCrash Handler]
#6  QtPrivate::RefCount::ref (this=0x0) at /usr/include/qt5/QtCore/qrefcount.h:54
#7  QV4::Heap::String::toQString (this=<optimized out>) at jsruntime/qv4string_p.h:84
#8  QV4::String::toQString (this=<optimized out>) at jsruntime/qv4string_p.h:145
#9  QV4::Heap::StringObject::StringObject (this=<optimized out>, engine=0x55ab1d4672c0, val=...) at jsruntime/qv4stringobject.cpp:91
#10 0x00007f96fde67164 in QV4::MemoryManager::alloc<QV4::StringObject, QV4::ExecutionEngine*, QV4::Value> (arg2=..., arg1=0x55ab1d4672c0, this=<optimized out>) at jsruntime/qv4mm_p.h:126
#11 QV4::ExecutionEngine::newStringObject (this=0x55ab1d4672c0, value=...) at jsruntime/qv4engine.cpp:557
#12 0x00007f96fdf0fbed in QV4::Runtime::getProperty (engine=engine@entry=0x55ab1d4672c0, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:682
#13 0x00007f96fdf00990 in QV4::Moth::VME::run (this=this@entry=0x7fffb9e7d02f, engine=engine@entry=0x55ab1d4672c0, code=0x7f96c80f1fb0 "P\024\360\375\226\177", code@entry=0x7f96c80f1f58 "\b\016\360\375\226\177", storeJumpTable=storeJumpTable@entry=0x0) at jsruntime/qv4vme_moth.cpp:487
#14 0x00007f96fdf02552 in QV4::Moth::VME::exec (engine=0x55ab1d4672c0, code=0x7f96c80f1f58 "\b\016\360\375\226\177") at jsruntime/qv4vme_moth.cpp:925
#15 0x00007f96fdeaa9b2 in QV4::SimpleScriptFunction::call (that=<optimized out>, callData=<optimized out>) at jsruntime/qv4functionobject.cpp:564
#16 0x00007f96fdfbc61c in QV4::Object::call (d=0x7fffb9e7d2ac, this=<optimized out>) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:305
#17 QQmlJavaScriptExpression::evaluate (this=this@entry=0x55ab1e182300, context=<optimized out>, function=..., callData=callData@entry=0x7f96cc42a238, isUndefined=isUndefined@entry=0x7fffb9e7d2ac) at qml/qqmljavascriptexpression.cpp:158
#18 0x00007f96fdfbcb7c in QQmlJavaScriptExpression::evaluate (this=this@entry=0x55ab1e182300, context=<optimized out>, function=..., isUndefined=isUndefined@entry=0x7fffb9e7d2ac) at qml/qqmljavascriptexpression.cpp:116
#19 0x00007f96fdfc5b7c in QQmlBinding::update (this=0x55ab1e1822e0, flags=...) at qml/qqmlbinding.cpp:194
#20 0x00007f96fdfd0c57 in QQmlAbstractBinding::setEnabled (f=..., e=true, this=0x55ab1e182318) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/qml/qqmlabstractbinding_p.h:110
#21 QQmlObjectCreator::finalize (this=0x55ab1e17fc00, interrupt=...) at qml/qqmlobjectcreator.cpp:1194
#22 0x00007f96fdf4c002 in QQmlIncubatorPrivate::incubate (this=this@entry=0x55ab1e17fb30, i=...) at qml/qqmlincubator.cpp:348
#23 0x00007f96fdf4c9db in QQmlEnginePrivate::incubate (this=this@entry=0x55ab1d466b90, i=..., forContext=forContext@entry=0x55ab1e1700e0) at qml/qqmlincubator.cpp:87
#24 0x00007f96fdf4736c in QQmlComponent::create (this=<optimized out>, incubator=..., context=<optimized out>, forContext=forContext@entry=0x0) at qml/qqmlcomponent.cpp:1068
#25 0x00007f96fe5fd55a in QQuickLoaderPrivate::_q_sourceLoaded (this=this@entry=0x55ab1e1702c0) at items/qquickloader.cpp:714
#26 0x00007f96fe5fd708 in QQuickLoaderPrivate::load (this=0x55ab1e1702c0) at items/qquickloader.cpp:597
#27 0x00007f96fe5fe5a0 in QQuickLoader::qt_static_metacall (_o=_o@entry=0x55ab1e158290, _c=_c@entry=QMetaObject::WriteProperty, _id=_id@entry=2, _a=_a@entry=0x7fffb9e7d7c0) at .moc/moc_qquickloader_p.cpp:250
#28 0x00007f96fe5fe6fb in QQuickLoader::qt_metacall (this=0x55ab1e158290, _c=QMetaObject::WriteProperty, _id=2, _a=0x7fffb9e7d7c0) at .moc/moc_qquickloader_p.cpp:301
#29 0x00007f96fdf41ff2 in QQmlPropertyPrivate::write (object=object@entry=0x55ab1e158290, property=..., value=..., context=0x55ab1e149860, flags=...) at qml/qqmlproperty.cpp:1313
#30 0x00007f96fdefd682 in QV4::QObjectWrapper::setProperty (object=object@entry=0x55ab1e158290, ctx=0x7f96cc42a220, property=0x7f96c819d008, value=...) at jsruntime/qv4qobjectwrapper.cpp:551
#31 0x00007f96fdefdd49 in QV4::QObjectWrapper::setQmlProperty (engine=0x55ab1d4672c0, qmlContext=0x55ab1e149860, object=0x55ab1e158290, name=<optimized out>, revisionMode=<optimized out>, value=...) at jsruntime/qv4qobjectwrapper.cpp:438
#32 0x00007f96fdefdeb1 in QV4::QObjectWrapper::put (m=0x7f96cc42a218, name=0x7f96cc42a210, value=...) at jsruntime/qv4qobjectwrapper.cpp:703
#33 0x00007f96fdf0f225 in QV4::Object::put (v=..., name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:283
#34 QV4::Runtime::setProperty (engine=engine@entry=0x55ab1d4672c0, object=..., nameIndex=<optimized out>, value=...) at jsruntime/qv4runtime.cpp:570
#35 0x00007f96fdf00a88 in QV4::Moth::VME::run (this=this@entry=0x7fffb9e7db2f, engine=engine@entry=0x55ab1d4672c0, code=0x7f96c8011ab8 "(\005\360\375\226\177", code@entry=0x7f96c8010d18 "\b\016\360\375\226\177", storeJumpTable=storeJumpTable@entry=0x0) at jsruntime/qv4vme_moth.cpp:496
#36 0x00007f96fdf02552 in QV4::Moth::VME::exec (engine=0x55ab1d4672c0, code=0x7f96c8010d18 "\b\016\360\375\226\177") at jsruntime/qv4vme_moth.cpp:925
#37 0x00007f96fdeaa9b2 in QV4::SimpleScriptFunction::call (that=<optimized out>, callData=<optimized out>) at jsruntime/qv4functionobject.cpp:564
#38 0x00007f96fdf11f58 in QV4::Object::call (d=0x7f96cc42a0c0, this=<optimized out>) at jsruntime/qv4object_p.h:305
#39 QV4::Runtime::callActivationProperty (engine=engine@entry=0x55ab1d4672c0, nameIndex=<optimized out>, callData=0x7f96cc42a0c0) at jsruntime/qv4runtime.cpp:950
#40 0x00007f96fdf01947 in QV4::Moth::VME::run (this=this@entry=0x7fffb9e7ddbf, engine=engine@entry=0x55ab1d4672c0, code=0x7f96c80f11d8 "P\024\360\375\226\177", code@entry=0x7f96c80f0fb8 "\b\016\360\375\226\177", storeJumpTable=storeJumpTable@entry=0x0) at jsruntime/qv4vme_moth.cpp:583
#41 0x00007f96fdf02552 in QV4::Moth::VME::exec (engine=0x55ab1d4672c0, code=0x7f96c80f0fb8 "\b\016\360\375\226\177") at jsruntime/qv4vme_moth.cpp:925
#42 0x00007f96fdeaa9b2 in QV4::SimpleScriptFunction::call (that=<optimized out>, callData=<optimized out>) at jsruntime/qv4functionobject.cpp:564
#43 0x00007f96fdfbc61c in QV4::Object::call (d=0xc07fd00000000000, this=<optimized out>) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:305
#44 QQmlJavaScriptExpression::evaluate (this=this@entry=0x55ab1e127680, context=<optimized out>, function=..., callData=callData@entry=0x7f96cc42a028, isUndefined=isUndefined@entry=0x0) at qml/qqmljavascriptexpression.cpp:158
#45 0x00007f96fdf54c2e in QQmlBoundSignalExpression::evaluate (this=<optimized out>, a=a@entry=0x0) at qml/qqmlboundsignal.cpp:281
#46 0x00007f96fdf554fb in QQmlBoundSignal_callback (e=0x55ab1e15ac48, a=0x0) at qml/qqmlboundsignal.cpp:408
#47 0x00007f96fdf9d066 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:94
#48 0x00007f96fdf2cf31 in QQmlData::signalEmitted (object=0x55ab1e154e50, index=29, a=0x0) at qml/qqmlengine.cpp:763
#49 0x00007f970369094c in QMetaObject::activate (sender=0x55ab1e154e50, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=argv@entry=0x0) at kernel/qobject.cpp:3599
#50 0x00007f96fdf22e4c in QQmlVMEMetaObject::activate (this=this@entry=0x55ab1e149bc0, object=<optimized out>, index=index@entry=43, args=args@entry=0x0) at qml/qqmlvmemetaobject.cpp:1325
#51 0x00007f96fdf236b4 in QQmlVMEMetaObject::writeProperty (this=this@entry=0x55ab1e149bc0, id=id@entry=0, value=...) at qml/qqmlvmemetaobject.cpp:1104
#52 0x00007f96fdf2410f in QQmlVMEMetaObject::metaCall (this=0x55ab1e149bc0, c=QMetaObject::WriteProperty, _id=<optimized out>, a=0x7fffb9e7fdf0) at qml/qqmlvmemetaobject.cpp:828
#53 0x00007f96fdf41ff2 in QQmlPropertyPrivate::write (object=object@entry=0x55ab1e154e50, property=..., value=..., context=context@entry=0x55ab1e1274b0, flags=...) at qml/qqmlproperty.cpp:1313
#54 0x00007f96fdf43b3a in QQmlPropertyPrivate::writeValueProperty (object=object@entry=0x55ab1e154e50, core=..., value=..., context=context@entry=0x55ab1e1274b0, flags=...) at qml/qqmlproperty.cpp:1237
#55 0x00007f96fdf4470e in QQmlPropertyPrivate::writeBinding (object=0x55ab1e154e50, core=..., context=0x55ab1e1274b0, expression=expression@entry=0x55ab1e14a540, result=..., isUndefined=isUndefined@entry=false, flags=...) at qml/qqmlproperty.cpp:1597
#56 0x00007f96fdfc5c0e in QQmlBinding::update (this=0x55ab1e14a520, flags=...) at qml/qqmlbinding.cpp:198
#57 0x00007f96fdfc6056 in QQmlBinding::update (this=<optimized out>) at qml/qqmlbinding_p.h:97
#58 QQmlBinding::expressionChanged (e=<optimized out>) at qml/qqmlbinding.cpp:260
#59 0x00007f96fdf9d066 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:94
#60 0x00007f96fdf2cf31 in QQmlData::signalEmitted (object=0x55ab1e045010, index=6, a=0x0) at qml/qqmlengine.cpp:763
#61 0x00007f970369094c in QMetaObject::activate (sender=0x55ab1e045010, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3599
#62 0x00007f9703690e5c in QtPrivate::QSlotObjectBase::call (a=0x7fffb9e81be0, r=0x55ab1e045010, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#63 QMetaObject::activate (sender=sender@entry=0x55ab1e045010, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x0) at kernel/qobject.cpp:3698
#64 0x00007f970369179e in QMetaObject::activate (sender=sender@entry=0x55ab1e045010, m=m@entry=0x7f96ce7039e0 <KWin::DecorationOptions::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x0) at kernel/qobject.cpp:3578
#65 0x00007f96ce4fd3aa in KWin::DecorationOptions::decorationChanged (this=this@entry=0x55ab1e045010) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4_build/clients/aurorae/src/moc_decorationoptions.cpp:344
#66 0x00007f96ce4fad5b in KWin::DecorationOptions::setDecoration (this=this@entry=0x55ab1e045010, decoration=<optimized out>) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/clients/aurorae/src/decorationoptions.cpp:182
#67 0x00007f96ce4fddad in KWin::DecorationOptions::qt_static_metacall (_o=_o@entry=0x55ab1e045010, _c=_c@entry=QMetaObject::WriteProperty, _id=_id@entry=0, _a=_a@entry=0x7fffb9e81f40) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4_build/clients/aurorae/src/moc_decorationoptions.cpp:268
#68 0x00007f96ce4fe65b in KWin::DecorationOptions::qt_metacall (this=0x55ab1e045010, _c=QMetaObject::WriteProperty, _id=0, _a=0x7fffb9e81f40) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4_build/clients/aurorae/src/moc_decorationoptions.cpp:312
#69 0x00007f96fdf41ff2 in QQmlPropertyPrivate::write (object=object@entry=0x55ab1e045010, property=..., value=..., context=context@entry=0x55ab1e1274b0, flags=...) at qml/qqmlproperty.cpp:1313
#70 0x00007f96fdf43b3a in QQmlPropertyPrivate::writeValueProperty (object=object@entry=0x55ab1e045010, core=..., value=..., context=context@entry=0x55ab1e1274b0, flags=...) at qml/qqmlproperty.cpp:1237
#71 0x00007f96fdf4470e in QQmlPropertyPrivate::writeBinding (object=0x55ab1e045010, core=..., context=0x55ab1e1274b0, expression=expression@entry=0x55ab1e155c50, result=..., isUndefined=isUndefined@entry=false, flags=...) at qml/qqmlproperty.cpp:1597
#72 0x00007f96fdfc5c0e in QQmlBinding::update (this=0x55ab1e155c30, flags=...) at qml/qqmlbinding.cpp:198
#73 0x00007f96fdfd0c57 in QQmlAbstractBinding::setEnabled (f=..., e=true, this=0x55ab1e155c68) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/qml/qqmlabstractbinding_p.h:110
#74 QQmlObjectCreator::finalize (this=0x55ab1e1248f0, interrupt=...) at qml/qqmlobjectcreator.cpp:1194
#75 0x00007f96fdf46b26 in QQmlComponentPrivate::complete (enginePriv=0x55ab1d466b90, state=0x55ab1da11310) at qml/qqmlcomponent.cpp:928
#76 0x00007f96fdf46c27 in QQmlComponentPrivate::completeCreate (this=0x55ab1da11270) at qml/qqmlcomponent.cpp:964
#77 0x00007f96fdf46a5f in QQmlComponent::create (this=0x55ab1da11490, context=0x55ab1e121a10) at qml/qqmlcomponent.cpp:791
#78 0x00007f96ec256863 in Aurorae::Decoration::init (this=0x55ab1e123460) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/clients/aurorae/src/aurorae.cpp:316
#79 0x00007f9704dbf7cf in KWin::Decoration::DecorationBridge::createDecoration (this=0x55ab1d1f9b40, client=client@entry=0x55ab1e1193f0) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/decorations/decorationbridge.cpp:243
#80 0x00007f9704c7e088 in KWin::Client::createDecoration (this=this@entry=0x55ab1e1193f0, oldgeom=...) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/client.cpp:397
#81 0x00007f9704c88e85 in KWin::Client::updateDecoration (this=this@entry=0x55ab1e1193f0, check_workspace_pos=check_workspace_pos@entry=false, force=force@entry=false) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/client.cpp:384
#82 0x00007f9704ce5f26 in KWin::Client::manage (this=this@entry=0x55ab1e1193f0, w=w@entry=52428823, isMapped=isMapped@entry=false) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/manage.cpp:385
#83 0x00007f9704c6556e in KWin::Workspace::createClient (this=this@entry=0x55ab1d1f0bb0, w=52428823, is_mapped=is_mapped@entry=false) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/workspace.cpp:484
#84 0x00007f9704cca373 in KWin::Workspace::workspaceEvent (this=0x55ab1d1f0bb0, e=0x7f96e8004130) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/events.cpp:417
#85 0x00007f970365d367 in QAbstractEventDispatcher::filterNativeEvent (this=<optimized out>, eventType=..., message=message@entry=0x7f96e8004130, result=result@entry=0x7fffb9e82cc8) at kernel/qabstracteventdispatcher.cpp:460
#86 0x00007f96eed55a63 in QXcbConnection::handleXcbEvent (this=this@entry=0x55ab1d0f5650, event=event@entry=0x7f96e8004130) at qxcbconnection.cpp:1020
#87 0x00007f96eed5688b in QXcbConnection::processXcbEvents (this=0x55ab1d0f5650) at qxcbconnection.cpp:1502
#88 0x00007f97036921d1 in QObject::event (this=0x55ab1d0f5650, e=<optimized out>) at kernel/qobject.cpp:1239
#89 0x00007f9703f4ba9c in QApplicationPrivate::notify_helper (this=this@entry=0x55ab1d0ef220, receiver=receiver@entry=0x55ab1d0f5650, e=e@entry=0x7f96e8001a10) at kernel/qapplication.cpp:3716
#90 0x00007f9703f514f5 in QApplication::notify (this=0x7fffb9e83320, receiver=0x55ab1d0f5650, e=0x7f96e8001a10) at kernel/qapplication.cpp:3499
#91 0x00007f970366007c in QCoreApplication::notifyInternal (this=0x7fffb9e83320, receiver=0x55ab1d0f5650, event=event@entry=0x7f96e8001a10) at kernel/qcoreapplication.cpp:965
#92 0x00007f97036635fe in QCoreApplication::sendEvent (event=0x7f96e8001a10, receiver=<optimized out>) at kernel/qcoreapplication.h:224
#93 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x55ab1d0df810) at kernel/qcoreapplication.cpp:1593
#94 0x00007f97036b9431 in QEventDispatcherUNIX::processEvents (this=0x55ab1d14bb10, flags=flags@entry=...) at kernel/qeventdispatcher_unix.cpp:579
#95 0x00007f96eedcb60c in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:62
#96 0x00007f970365e912 in QEventLoop::exec (this=this@entry=0x7fffb9e83240, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#97 0x00007f9703666e2b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#98 0x00007f97039ad00b in QGuiApplication::exec () at kernel/qguiapplication.cpp:1527
#99 0x00007f9703f4763c in QApplication::exec () at kernel/qapplication.cpp:2976
#100 0x00007f9705478749 in kdemain (argc=1, argv=0x7fffb9e83488) at /var/tmp/portage/kde-plasma/kwin-5.5.4/work/kwin-5.5.4/main_x11.cpp:308
#101 0x00007f97050ea91c in __libc_start_main (main=0x55ab1cc739a0 <main(int, char**)>, argc=3, argv=0x7fffb9e83488, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb9e83478) at libc-start.c:297
#102 0x000055ab1cc73a19 in _start ()

Reported using DrKonqi