Application: plasma-discover (5.8.8)
 (Compiled from sources)
Qt Version: 5.6.1
Frameworks Version: 5.36.0
Operating System: Linux 4.4.0-104-generic x86_64
Distribution: Ubuntu 16.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed: Opened Discovery to perform regular update. Process starts, albeit slowly, then crashes at a seemingly random point. Generates an error message of "Discover has closed unexpectedly..."

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f72ba083900 (LWP 1918))]

Thread 11 (Thread 0x7f726987e700 (LWP 1950)):
#0  0x00007f72b3b0fa94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f72b3acb4a6 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72b753137b in QEventDispatcherGlib::processEvents (this=0x7f72640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#3  0x00007f72b74d9ffa in QEventLoop::exec (this=this@entry=0x7f726987dcc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f72b73029e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#5  0x00007f72b7307808 in QThreadPrivate::start (arg=0x2bc2a70) at thread/qthread_unix.cpp:341
#6  0x00007f72b42386ba in start_thread (arg=0x7f726987e700) at pthread_create.c:333
#7  0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f72809b8700 (LWP 1946)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f72b73086bb in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4c8d200) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=this@entry=0x24bcab8, mutex=mutex@entry=0x24bcab0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f72b99b9a8d in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x24bcaa8) at scenegraph/qsgthreadedrenderloop.cpp:236
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x24bca30) at scenegraph/qsgthreadedrenderloop.cpp:684
#5  0x00007f72b99ba365 in QSGRenderThread::run (this=0x24bca30) at scenegraph/qsgthreadedrenderloop.cpp:713
#6  0x00007f72b7307808 in QThreadPrivate::start (arg=0x24bca30) at thread/qthread_unix.cpp:341
#7  0x00007f72b42386ba in start_thread (arg=0x7f72809b8700) at pthread_create.c:333
#8  0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f7281dc4700 (LWP 1943)):
#0  0x00007fffce3159a7 in ?? ()
#1  0x00007fffce315cd5 in clock_gettime ()
#2  0x00007f72b691a836 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f7281dc3a20) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007f72b73b36c6 in qt_clock_gettime (ts=0x7f7281dc3a20, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#4  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#5  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#6  0x00007f72b752ef09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f72780030d0) at kernel/qtimerinfo_unix.cpp:84
#7  0x00007f72b752f475 in QTimerInfoList::timerWait (this=0x7f72780030d0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#8  0x00007f72b753085e in timerSourcePrepareHelper (timeout=0x7f7281dc3af4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:126
#9  timerSourcePrepare (source=<optimized out>, timeout=0x7f7281dc3af4) at kernel/qeventdispatcher_glib.cpp:159
#10 0x00007f72b3aca91d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f72b3acb2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f72b3acb49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f72b753137b in QEventDispatcherGlib::processEvents (this=0x7f72780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#14 0x00007f72b74d9ffa in QEventLoop::exec (this=this@entry=0x7f7281dc3cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#15 0x00007f72b73029e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#16 0x00007f72b7307808 in QThreadPrivate::start (arg=0x2825ea0) at thread/qthread_unix.cpp:341
#17 0x00007f72b42386ba in start_thread (arg=0x7f7281dc4700) at pthread_create.c:333
#18 0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f7282d1a700 (LWP 1928)):
#0  0x00007f72b68fc24d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f72af6d9073 in ?? () from /usr/lib/nvidia-384/tls/libnvidia-tls.so.384.90
#2  0x00007f72b3b0e6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72b3acae74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f72b3acb330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f72b3acb712 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f72884ab9d6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007f72b3af1bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f72b42386ba in start_thread (arg=0x7f7282d1a700) at pthread_create.c:333
#9  0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f728351b700 (LWP 1927)):
#0  0x00007f72b690070d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f72b3acb38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72b3acb49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72b3acb4d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f72b3af1bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f72b42386ba in start_thread (arg=0x7f728351b700) at pthread_create.c:333
#6  0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f7294fb2700 (LWP 1923)):
#0  0x00007f72b3acada8 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f72b3acb330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72b3acb49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72b753137b in QEventDispatcherGlib::processEvents (this=0x7f72840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007f72b74d9ffa in QEventLoop::exec (this=this@entry=0x7f7294fb1cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f72b73029e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007f72b7307808 in QThreadPrivate::start (arg=0x7f728c003650) at thread/qthread_unix.cpp:341
#7  0x00007f72b42386ba in start_thread (arg=0x7f7294fb2700) at pthread_create.c:333
#8  0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f729796c700 (LWP 1922)):
#0  0x00007f72b3b0fa94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f72b3acadb9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72b3acb330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72b3acb49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f72b753137b in QEventDispatcherGlib::processEvents (this=0x7f728c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f72b74d9ffa in QEventLoop::exec (this=this@entry=0x7f729796bc50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f72b73029e4 in QThread::exec (this=this@entry=0x2878500) at thread/qthread.cpp:500
#7  0x00007f72b99487d6 in QQuickPixmapReader::run (this=0x2878500) at util/qquickpixmapcache.cpp:817
#8  0x00007f72b7307808 in QThreadPrivate::start (arg=0x2878500) at thread/qthread_unix.cpp:341
#9  0x00007f72b42386ba in start_thread (arg=0x7f729796c700) at pthread_create.c:333
#10 0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f729e05f700 (LWP 1921)):
#0  0x00007f72b690070d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f72b3acb38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72b3acb49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72b753137b in QEventDispatcherGlib::processEvents (this=0x7f72900008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007f72b74d9ffa in QEventLoop::exec (this=this@entry=0x7f729e05eca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f72b73029e4 in QThread::exec (this=this@entry=0x2301c10) at thread/qthread.cpp:500
#6  0x00007f72b7c866b5 in QQmlThreadPrivate::run (this=0x2301c10) at qml/ftw/qqmlthread.cpp:141
#7  0x00007f72b7307808 in QThreadPrivate::start (arg=0x2301c10) at thread/qthread_unix.cpp:341
#8  0x00007f72b42386ba in start_thread (arg=0x7f729e05f700) at pthread_create.c:333
#9  0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f729f270700 (LWP 1920)):
#0  0x00007f72b3b0fa94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f72b3acadb9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72b3acb330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72b3acb49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f72b753137b in QEventDispatcherGlib::processEvents (this=0x7f72980008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f72b74d9ffa in QEventLoop::exec (this=this@entry=0x7f729f26fc90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f72b73029e4 in QThread::exec (this=this@entry=0x7f72ba239d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
#7  0x00007f72ba1c6515 in QDBusConnectionManager::run (this=0x7f72ba239d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:189
#8  0x00007f72b7307808 in QThreadPrivate::start (arg=0x7f72ba239d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341
#9  0x00007f72b42386ba in start_thread (arg=0x7f729f270700) at pthread_create.c:333
#10 0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f72a7aa7700 (LWP 1919)):
#0  0x00007f72b690070d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f72b19f1c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f72b19f38d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f72aa62fd29 in QXcbEventReader::run (this=0x22bcb80) at qxcbconnection.cpp:1325
#4  0x00007f72b7307808 in QThreadPrivate::start (arg=0x22bcb80) at thread/qthread_unix.cpp:341
#5  0x00007f72b42386ba in start_thread (arg=0x7f72a7aa7700) at pthread_create.c:333
#6  0x00007f72b690c3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f72ba083900 (LWP 1918)):
[KCrash Handler]
#6  0x00007f72b9608040 in Transaction::isActive() const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#7  0x00007f72b9609a5b in TransactionModel::progress() const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#8  0x00007f72b96274a5 in ?? () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9  0x00007f72b962a2fb in TransactionModel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007f72b7bd2319 in ReadAccessor::Direct (property=..., n=0x0, output=0x7fffce263a50, object=0x7f72b9841890) at jsruntime/qv4qobjectwrapper.cpp:129
#11 LoadProperty<ReadAccessor::Direct> (v4=0x23722c0, object=0x7f72b9841890, property=..., notifier=0x0) at jsruntime/qv4qobjectwrapper.cpp:164
#12 0x00007f72b7bd33c5 in QV4::QObjectWrapper::getProperty (engine=engine@entry=0x23722c0, object=0x7f72b9841890, property=0x2612f68, captureRequired=captureRequired@entry=true) at jsruntime/qv4qobjectwrapper.cpp:378
#13 0x00007f72b7bd3b4a in QV4::QObjectWrapper::getQmlProperty (this=0x7f729d0603e8, qmlContext=0x25a0980, name=0x7f729d0603e0, revisionMode=QV4::QObjectWrapper::IgnoreRevision, hasProperty=0x0, includeImports=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:318
#14 0x00007f72b7be569e in QV4::Object::get (hasProperty=0x0, name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:298
#15 QV4::Runtime::getProperty (engine=0x23722c0, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:679
#16 0x00007f729c82d920 in ?? ()
#17 0x00007fffce263e80 in ?? ()
#18 0x0000000000000002 in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x00007f72b7bf1cf0 in QQmlVMEMetaObject::metaCall (this=0x7f729d060320, o=<optimized out>, c=3458612480, _id=-1660550176, a=0x23722c0) at qml/qqmlvmemetaobject.cpp:876
#21 0x00007f72b7c6b724 in QV4::Object::call (d=0x7f729d060320, this=0x7f729c010800) at ../../include/QtQml/5.6.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:324
#22 QQmlJavaScriptExpression::evaluate (this=this@entry=0x25eced0, callData=callData@entry=0x7f729d060320, isUndefined=isUndefined@entry=0x7fffce263f2c) at qml/qqmljavascriptexpression.cpp:189
#23 0x00007f72b7c6bbc1 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x25eced0, isUndefined=isUndefined@entry=0x7fffce263f2c) at qml/qqmljavascriptexpression.cpp:149
#24 0x00007f72b7c7347e in QQmlBinding::update (this=0x25eced0, flags=...) at qml/qqmlbinding.cpp:187
#25 0x00007f72b7c7398e in QQmlBinding::refresh (this=<optimized out>) at qml/qqmlbinding.cpp:403
#26 0x00007f72b7c4aace in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:94
#27 0x00007f72b7bf64ac in QQmlData::signalEmitted (object=0x7f72b9841890, index=31, a=0x0) at qml/qqmlengine.cpp:773
#28 0x00007f72b75082b0 in QMetaObject::activate (sender=0x7f72b9841890, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3616
#29 0x00007f72b7508c24 in QtPrivate::QSlotObjectBase::call (a=0x7fffce265b60, r=0x7f72b9841890, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#30 QMetaObject::activate (sender=sender@entry=0x7f72b9841890, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fffce265b60) at kernel/qobject.cpp:3715
#31 0x00007f72b75091b7 in QMetaObject::activate (sender=sender@entry=0x7f72b9841890, m=m@entry=0x7f72b7723da0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fffce265b60) at kernel/qobject.cpp:3595
#32 0x00007f72b75810b4 in QAbstractItemModel::rowsRemoved (this=this@entry=0x7f72b9841890, _t1=..., _t2=-1, _t3=-1) at .moc/moc_qabstractitemmodel.cpp:615
#33 0x00007f72b748399b in QAbstractItemModel::endRemoveRows (this=0x7f72b9841890) at itemmodels/qabstractitemmodel.cpp:2678
#34 0x00007f72b960aa9c in TransactionModel::removeTransaction(Transaction*) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#35 0x00007f72b7508c24 in QtPrivate::QSlotObjectBase::call (a=0x7fffce265d60, r=0x7f72b9841890, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#36 QMetaObject::activate (sender=sender@entry=0x67da930, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffce265d60) at kernel/qobject.cpp:3715
#37 0x00007f72b75091b7 in QMetaObject::activate (sender=sender@entry=0x67da930, m=m@entry=0x7f72b771b820 <QObject::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffce265d60) at kernel/qobject.cpp:3595
#38 0x00007f72b750925f in QObject::destroyed (this=this@entry=0x67da930, _t1=_t1@entry=0x67da930) at .moc/moc_qobject.cpp:213
#39 0x00007f72b750fcf5 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:913
#40 0x00007f72b961b08d in ?? () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#41 0x00007f72b7509750 in QObject::event (this=0x67da930, e=<optimized out>) at kernel/qobject.cpp:1247
#42 0x00007f72b8498afc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x67da930, e=0x22c96a0) at kernel/qapplication.cpp:3804
#43 0x00007f72b849e036 in QApplication::notify (this=0x7fffce266440, receiver=0x67da930, e=0x22c96a0) at kernel/qapplication.cpp:3561
#44 0x00007f72b74dc2a8 in QCoreApplication::notifyInternal2 (receiver=0x67da930, event=event@entry=0x22c96a0) at kernel/qcoreapplication.cpp:1015
#45 0x00007f72b74de16a in QCoreApplication::sendEvent (event=0x22c96a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:225
#46 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x228f310) at kernel/qcoreapplication.cpp:1650
#47 0x00007f72b74de628 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
#48 0x00007f72b7530f53 in postEventSourceDispatch (s=0x2300520) at kernel/qeventdispatcher_glib.cpp:270
#49 0x00007f72b3acb197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f72b3acb3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007f72b3acb49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f72b753135f in QEventDispatcherGlib::processEvents (this=0x230e8f0, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#53 0x00007f72b74d9ffa in QEventLoop::exec (this=this@entry=0x7fffce266360, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#54 0x00007f72b74e26bc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#55 0x000000000040a2d5 in ?? ()
#56 0x00007f72b6825830 in __libc_start_main (main=0x409bc0, argc=3, argv=0x7fffce2665d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffce2665c8) at ../csu/libc-start.c:291
#57 0x000000000040a419 in _start ()

Possible duplicates by query: bug 387916, bug 387653, bug 387488, bug 387458, bug 387457.

Reported using DrKonqi