Application: plasmashell (5.3.95)
 (Compiled from sources)
Qt Version: 5.4.2
Operating System: Linux 4.1.0-pf1 x86_64
Distribution: "Funtoo Linux - baselayout 2.2.0"

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

Logging into KDE after a clean reboot.

I noticed that the progress bar filled and vanished, but instead of getting that nice fade to desktop effect, I got a black screen, and then everything blinked in, including the crash dialog.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd9bf047800 (LWP 4183))]

Thread 7 (Thread 0x7fd9be7ba700 (LWP 4186)):
#0  0x00000036474e0c6d in poll () from /lib64/libc.so.6
#1  0x000000364b40a922 in ?? () from /usr/lib64/libxcb.so.1
#2  0x000000364b40c3bf in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fd9bec33639 in QXcbEventReader::run (this=0x1474ff0) at qxcbconnection.cpp:1105
#4  0x000000365469f82f in QThreadPrivate::start (arg=0x1474ff0) at thread/qthread_unix.cpp:337
#5  0x0000003647807574 in start_thread () from /lib64/libpthread.so.0
#6  0x00000036474e9add in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fd9b75ef700 (LWP 5164)):
#0  0x000000364908b5a9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00000036490478e0 in g_main_context_acquire () from /usr/lib64/libglib-2.0.so.0
#2  0x00000036490487a5 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00000036490489dc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00000036548d3bfc in QEventDispatcherGlib::processEvents (this=0x7fd9b00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x000000365487caa2 in QEventLoop::exec (this=this@entry=0x7fd9b75eedb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x000000365469ab4c in QThread::exec (this=this@entry=0x153ad50) at thread/qthread.cpp:503
#7  0x00000036652b5255 in QQmlThreadPrivate::run (this=0x153ad50) at qml/ftw/qqmlthread.cpp:141
#8  0x000000365469f82f in QThreadPrivate::start (arg=0x153ad50) at thread/qthread_unix.cpp:337
#9  0x0000003647807574 in start_thread () from /lib64/libpthread.so.0
#10 0x00000036474e9add in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fd9aefe6700 (LWP 5165)):
#0  0x0000003649047f48 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#1  0x0000003649048800 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00000036490489dc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00000036548d3bfc in QEventDispatcherGlib::processEvents (this=0x7fd9a80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x000000365487caa2 in QEventLoop::exec (this=this@entry=0x7fd9aefe5db0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x000000365469ab4c in QThread::exec (this=this@entry=0x1e954e0) at thread/qthread.cpp:503
#6  0x00000036652b5255 in QQmlThreadPrivate::run (this=0x1e954e0) at qml/ftw/qqmlthread.cpp:141
#7  0x000000365469f82f in QThreadPrivate::start (arg=0x1e954e0) at thread/qthread_unix.cpp:337
#8  0x0000003647807574 in start_thread () from /lib64/libpthread.so.0
#9  0x00000036474e9add in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fd9ad4c5700 (LWP 5169)):
#0  0x00000036474e0c6d in poll () from /lib64/libc.so.6
#1  0x00000036490488d4 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00000036490489dc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00000036548d3bfc in QEventDispatcherGlib::processEvents (this=0x7fd9a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x000000365487caa2 in QEventLoop::exec (this=this@entry=0x7fd9ad4c4db0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x000000365469ab4c in QThread::exec (this=this@entry=0x1f71350) at thread/qthread.cpp:503
#6  0x00000036652b5255 in QQmlThreadPrivate::run (this=0x1f71350) at qml/ftw/qqmlthread.cpp:141
#7  0x000000365469f82f in QThreadPrivate::start (arg=0x1f71350) at thread/qthread_unix.cpp:337
#8  0x0000003647807574 in start_thread () from /lib64/libpthread.so.0
#9  0x00000036474e9add in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fd99f9c6700 (LWP 5170)):
#0  0x000000364780cadf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000030a7b797d4 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x30a7e67880) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00000030a7b79819 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x0000003647807574 in start_thread () from /lib64/libpthread.so.0
#4  0x00000036474e9add in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fd91cfad700 (LWP 5177)):
#0  0x00000036474e0c6d in poll () from /lib64/libc.so.6
#1  0x00000036490488d4 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00000036490489dc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00000036548d3bfc in QEventDispatcherGlib::processEvents (this=0x7fd9180013d0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x000000365487caa2 in QEventLoop::exec (this=this@entry=0x7fd91cfacd70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x000000365469ab4c in QThread::exec (this=this@entry=0x370b850) at thread/qthread.cpp:503
#6  0x00000036658fb9e2 in QQuickPixmapReader::run (this=0x370b850) at util/qquickpixmapcache.cpp:714
#7  0x000000365469f82f in QThreadPrivate::start (arg=0x370b850) at thread/qthread_unix.cpp:337
#8  0x0000003647807574 in start_thread () from /lib64/libpthread.so.0
#9  0x00000036474e9add in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fd9bf047800 (LWP 4183)):
[KCrash Handler]
#6  inUse (this=0x1) at jsruntime/qv4managed_p.h:342
#7  QV4::MemoryManager::collectFromJSStack (this=this@entry=0x151e990) at jsruntime/qv4mm.cpp:581
#8  0x000000366519c29f in QV4::MemoryManager::mark (this=0x151e990) at jsruntime/qv4mm.cpp:295
#9  0x000000366519cd54 in QV4::MemoryManager::runGC (this=0x151e990) at jsruntime/qv4mm.cpp:458
#10 0x000000366519dbc7 in QV4::MemoryManager::allocData (this=0x151e990, size=112) at jsruntime/qv4mm.cpp:211
#11 0x00000036651c892e in allocManaged (size=<optimized out>, this=<optimized out>) at jsruntime/qv4mm_p.h:94
#12 QV4::Members::ensureIndex (this=this@entry=0x7fd91472db30, e=0x1f8fbc0, idx=<optimized out>) at jsruntime/qv4memberdata.cpp:54
#13 0x00000036651cadc1 in QV4::Object::ensureMemberIndex (this=this@entry=0x7fd91472db20, idx=<optimized out>) at jsruntime/qv4object.cpp:205
#14 0x00000036651cae05 in QV4::Object::insertMember (this=0x7fd91472db20, s=<optimized out>, p=..., attributes=...) at jsruntime/qv4object.cpp:214
#15 0x00000036651bccdd in QV4::SimpleScriptFunction::Data::Data (this=this@entry=0x7fd91472db20, scope=scope@entry=0x7fd914419060, function=function@entry=0x3f01940, createProto=createProto@entry=false) at jsruntime/qv4functionobject.cpp:439
#16 0x00000036651bce23 in alloc<QV4::SimpleScriptFunction, QV4::ExecutionContext*, QV4::Function*, bool> (arg3=<optimized out>, arg2=0x3f01940, arg1=0x7fd914419060, this=<optimized out>) at jsruntime/qv4mm_p.h:126
#17 QV4::FunctionObject::createScriptFunction (scope=0x7fd914419060, function=0x3f01940, createProto=<optimized out>) at jsruntime/qv4functionobject.cpp:175
#18 0x00000036652b0011 in QQmlObjectCreator::setPropertyBinding (this=0x7ffe2c5f68c0, property=0x7fd9a400f598, binding=0x7fd9a4629bd4) at qml/qqmlobjectcreator.cpp:832
#19 0x00000036652b0f9e in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffe2c5f68c0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:733
#20 0x00000036652b190d in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffe2c5f68c0, index=20, instance=0x3f13a80, instance@entry=0x3f21db0, bindingTarget=0x3f13a80, bindingTarget@entry=0x3f21db0, valueTypeProperty=valueTypeProperty@entry=0x0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:1348
#21 0x00000036652b25f3 in QQmlObjectCreator::createInstance (this=<optimized out>, index=20, parent=<optimized out>, isContextObject=<optimized out>) at qml/qqmlobjectcreator.cpp:1184
#22 0x00000036652b0255 in QQmlObjectCreator::setPropertyBinding (this=0x7ffe2c5f68c0, property=0x7fd9a400f3b8, binding=0x7fd9a4629acc) at qml/qqmlobjectcreator.cpp:774
#23 0x00000036652b0f9e in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffe2c5f68c0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:733
#24 0x00000036652b190d in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffe2c5f68c0, index=18, instance=0x3f04060, instance@entry=0x3f13a80, bindingTarget=0x3f04060, bindingTarget@entry=0x3f13a80, valueTypeProperty=valueTypeProperty@entry=0x0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:1348
#25 0x00000036652b25f3 in QQmlObjectCreator::createInstance (this=<optimized out>, index=18, parent=<optimized out>, isContextObject=<optimized out>) at qml/qqmlobjectcreator.cpp:1184
#26 0x00000036652b0255 in QQmlObjectCreator::setPropertyBinding (this=0x7ffe2c5f68c0, property=0x7fd9a400f3b8, binding=0x7fd9a46292cc) at qml/qqmlobjectcreator.cpp:774
#27 0x00000036652b0f9e in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffe2c5f68c0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:733
#28 0x00000036652b190d in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffe2c5f68c0, index=7, instance=0x3f02bd0, instance@entry=0x3f04060, bindingTarget=0x3f02bd0, bindingTarget@entry=0x3f04060, valueTypeProperty=valueTypeProperty@entry=0x0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:1348
#29 0x00000036652b25f3 in QQmlObjectCreator::createInstance (this=<optimized out>, index=7, parent=<optimized out>, isContextObject=<optimized out>) at qml/qqmlobjectcreator.cpp:1184
#30 0x00000036652b0255 in QQmlObjectCreator::setPropertyBinding (this=0x7ffe2c5f68c0, property=0x7fd9a400f3b8, binding=0x7fd9a4628e4c) at qml/qqmlobjectcreator.cpp:774
#31 0x00000036652b0f9e in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffe2c5f68c0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:733
#32 0x00000036652b190d in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffe2c5f68c0, index=0, instance=0x0, instance@entry=0x3f02bd0, bindingTarget=0x1523ae0, bindingTarget@entry=0x3f02bd0, valueTypeProperty=valueTypeProperty@entry=0x0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:1348
#33 0x00000036652b25f3 in QQmlObjectCreator::createInstance (this=this@entry=0x7ffe2c5f68c0, index=index@entry=0, parent=parent@entry=0x0, isContextObject=isContextObject@entry=true) at qml/qqmlobjectcreator.cpp:1184
#34 0x00000036652b32f4 in QQmlObjectCreator::create (this=this@entry=0x7ffe2c5f68c0, subComponentIndex=subComponentIndex@entry=-1, parent=parent@entry=0x0, interrupt=interrupt@entry=0x0) at qml/qqmlobjectcreator.cpp:222
#35 0x00000036652b2ddc in QQmlObjectCreator::createInstance (this=0x7ffe2c5f7560, index=8, parent=0x3efe530, isContextObject=<optimized out>) at qml/qqmlobjectcreator.cpp:1091
#36 0x00000036652b0255 in QQmlObjectCreator::setPropertyBinding (this=0x7ffe2c5f7560, property=0x7fd9a400f3b8, binding=0x7fd9a45aa10c) at qml/qqmlobjectcreator.cpp:774
#37 0x00000036652b0f9e in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffe2c5f7560, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:733
#38 0x00000036652b190d in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffe2c5f7560, index=4, instance=0x3eeffe0, instance@entry=0x3efe530, bindingTarget=0x3eeffe0, bindingTarget@entry=0x3efe530, valueTypeProperty=valueTypeProperty@entry=0x0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:1348
#39 0x00000036652b25f3 in QQmlObjectCreator::createInstance (this=<optimized out>, index=4, parent=<optimized out>, isContextObject=<optimized out>) at qml/qqmlobjectcreator.cpp:1184
#40 0x00000036652b0255 in QQmlObjectCreator::setPropertyBinding (this=0x7ffe2c5f7560, property=0x7fd9a4032b48, binding=0x7fd9a45a9e9c) at qml/qqmlobjectcreator.cpp:774
#41 0x00000036652b0f9e in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffe2c5f7560, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:733
#42 0x00000036652b190d in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffe2c5f7560, index=0, instance=0x0, instance@entry=0x3eeffe0, bindingTarget=0x7ffe2c5f76f0, bindingTarget@entry=0x3eeffe0, valueTypeProperty=valueTypeProperty@entry=0x0, bindingsToSkip=...) at qml/qqmlobjectcreator.cpp:1348
#43 0x00000036652b25f3 in QQmlObjectCreator::createInstance (this=this@entry=0x7ffe2c5f7560, index=index@entry=0, parent=parent@entry=0x0, isContextObject=isContextObject@entry=true) at qml/qqmlobjectcreator.cpp:1184
#44 0x00000036652b32f4 in QQmlObjectCreator::create (this=this@entry=0x7ffe2c5f7560, subComponentIndex=subComponentIndex@entry=-1, parent=parent@entry=0x0, interrupt=interrupt@entry=0x0) at qml/qqmlobjectcreator.cpp:222
#45 0x00000036652b2ddc in QQmlObjectCreator::createInstance (this=this@entry=0x3ed5e80, index=index@entry=4, parent=parent@entry=0x0, isContextObject=isContextObject@entry=true) at qml/qqmlobjectcreator.cpp:1091
#46 0x00000036652b32f4 in QQmlObjectCreator::create (this=0x3ed5e80, subComponentIndex=3, parent=parent@entry=0x0, interrupt=interrupt@entry=0x0) at qml/qqmlobjectcreator.cpp:222
#47 0x000000366523b855 in QQmlComponentPrivate::beginCreate (this=0x3ed3580, context=0x3ed1530) at qml/qqmlcomponent.cpp:880
#48 0x000000366523be1a in beginCreate (publicContext=<optimized out>, this=0x3ed15f0) at qml/qqmlcomponent.cpp:829
#49 QQmlComponent::createObject (this=0x3ed15f0, args=0x7ffe2c5f7a40) at qml/qqmlcomponent.cpp:1222
#50 0x0000003665318f54 in QQmlComponent::qt_static_metacall (_o=_o@entry=0x3ed15f0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=6, _a=_a@entry=0x7ffe2c5f7a10) at .moc/moc_qqmlcomponent.cpp:146
#51 0x0000003665319137 in QQmlComponent::qt_metacall (this=0x3ed15f0, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0x7ffe2c5f7a10) at .moc/moc_qqmlcomponent.cpp:205
#52 0x00000036651fedc9 in QV4::QObjectMethod::callInternal (this=<optimized out>, callData=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:1882
#53 0x000000366520a2b7 in call (d=0x7fd9ac4c5080, this=<optimized out>) at jsruntime/qv4object_p.h:278
#54 QV4::Runtime::callProperty (context=0x7ffe2c5f7c00, name=0x7fd9ac42d280, callData=0x7fd9ac4c5080) at jsruntime/qv4runtime.cpp:930
#55 0x00007fd91413b455 in ?? ()
#56 0x0000000000000000 in ?? ()

Reported using DrKonqi