Application: plasma-discover (5.8.8)

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:
KDE installed updates, I was accessing an USB stick and printed out a PDF while the crash occured.

-- 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 0x7fc4a0dd08c0 (LWP 3018))]

Thread 12 (Thread 0x7fc460c18700 (LWP 3049)):
#0  0x00007fc49d65470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc49a81f38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc49a81f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc49e28537b in QEventDispatcherGlib::processEvents (this=0x7fc4440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fc49e22dffa in QEventLoop::exec (this=this@entry=0x7fc460c17d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc49e0569e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fc49e05b808 in QThreadPrivate::start (arg=0x146c470) at thread/qthread_unix.cpp:341
#7  0x00007fc49af8c6ba in start_thread (arg=0x7fc460c18700) at pthread_create.c:333
#8  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fc46227d700 (LWP 3044)):
#0  0x00007fc49d65470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc49a81f38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc49a81f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc49e28537b in QEventDispatcherGlib::processEvents (this=0x7fc4580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fc49e22dffa in QEventLoop::exec (this=this@entry=0x7fc46227cd00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc49e0569e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fc49e05b808 in QThreadPrivate::start (arg=0x13601a0) at thread/qthread_unix.cpp:341
#7  0x00007fc49af8c6ba in start_thread (arg=0x7fc46227d700) at pthread_create.c:333
#8  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fc463f70700 (LWP 3031)):
#0  0x00007fc49d65470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc49a81f38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc49a81f712 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc4656f59d6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fc49a845bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc49af8c6ba in start_thread (arg=0x7fc463f70700) at pthread_create.c:333
#6  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fc464771700 (LWP 3030)):
#0  0x00007fc49d65024d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc49a8626f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc49a81ee74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc49a81f330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc49a81f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc49a81f4d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fc49a845bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fc49af8c6ba in start_thread (arg=0x7fc464771700) at pthread_create.c:333
#8  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fc46ffff700 (LWP 3025)):
#0  0x00007fc49d65470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc49a81f38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc49a81f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc49e28537b in QEventDispatcherGlib::processEvents (this=0x7fc4680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fc49e22dffa in QEventLoop::exec (this=this@entry=0x7fc46fffed00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc49e0569e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fc49e05b808 in QThreadPrivate::start (arg=0x7fc470003650) at thread/qthread_unix.cpp:341
#7  0x00007fc49af8c6ba in start_thread (arg=0x7fc46ffff700) at pthread_create.c:333
#8  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fc474a45700 (LWP 3024)):
#0  0x00007ffe71de7caf in clock_gettime ()
#1  0x00007fc49d66e836 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7fc474a449f0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fc49e1076c6 in qt_clock_gettime (ts=0x7fc474a449f0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007fc49e282f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fc470002ed0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fc49e283475 in QTimerInfoList::timerWait (this=0x7fc470002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007fc49e28485e in timerSourcePrepareHelper (timeout=0x7fc474a44ac4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:126
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fc474a44ac4) at kernel/qeventdispatcher_glib.cpp:159
#9  0x00007fc49a81e91d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fc49a81f2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fc49a81f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fc49e28537b in QEventDispatcherGlib::processEvents (this=0x7fc4700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#13 0x00007fc49e22dffa in QEventLoop::exec (this=this@entry=0x7fc474a44c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fc49e0569e4 in QThread::exec (this=this@entry=0x10f4940) at thread/qthread.cpp:500
#15 0x00007fc4a069c7d6 in QQuickPixmapReader::run (this=0x10f4940) at util/qquickpixmapcache.cpp:817
#16 0x00007fc49e05b808 in QThreadPrivate::start (arg=0x10f4940) at thread/qthread_unix.cpp:341
#17 0x00007fc49af8c6ba in start_thread (arg=0x7fc474a45700) at pthread_create.c:333
#18 0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fc47d16d700 (LWP 3023)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc47f4d360b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fc47f4d3517 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007fc49af8c6ba in start_thread (arg=0x7fc47d16d700) at pthread_create.c:333
#4  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fc47e0d6700 (LWP 3022)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc47f4d360b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fc47f4d3517 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007fc49af8c6ba in start_thread (arg=0x7fc47e0d6700) at pthread_create.c:333
#4  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fc485dea700 (LWP 3021)):
#0  0x00007fc49d65470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc49a81f38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc49a81f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc49e28537b in QEventDispatcherGlib::processEvents (this=0x7fc4780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fc49e22dffa in QEventLoop::exec (this=this@entry=0x7fc485de9ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc49e0569e4 in QThread::exec (this=this@entry=0xce4270) at thread/qthread.cpp:500
#6  0x00007fc49e9da6b5 in QQmlThreadPrivate::run (this=0xce4270) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fc49e05b808 in QThreadPrivate::start (arg=0xce4270) at thread/qthread_unix.cpp:341
#8  0x00007fc49af8c6ba in start_thread (arg=0x7fc485dea700) at pthread_create.c:333
#9  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fc486ffb700 (LWP 3020)):
#0  0x00007fc49a81f472 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc49e28537b in QEventDispatcherGlib::processEvents (this=0x7fc4800008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#2  0x00007fc49e22dffa in QEventLoop::exec (this=this@entry=0x7fc486ffacd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#3  0x00007fc49e0569e4 in QThread::exec (this=this@entry=0x7fc4a0f8ad40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
#4  0x00007fc4a0f17515 in QDBusConnectionManager::run (this=0x7fc4a0f8ad40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:189
#5  0x00007fc49e05b808 in QThreadPrivate::start (arg=0x7fc4a0f8ad40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341
#6  0x00007fc49af8c6ba in start_thread (arg=0x7fc486ffb700) at pthread_create.c:333
#7  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fc48f38a700 (LWP 3019)):
#0  0x00007fc49d65470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc498814c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fc4988168d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fc4918e0d29 in QXcbEventReader::run (this=0xc5a940) at qxcbconnection.cpp:1325
#4  0x00007fc49e05b808 in QThreadPrivate::start (arg=0xc5a940) at thread/qthread_unix.cpp:341
#5  0x00007fc49af8c6ba in start_thread (arg=0x7fc48f38a700) at pthread_create.c:333
#6  0x00007fc49d6603dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fc4a0dd08c0 (LWP 3018)):
[KCrash Handler]
#6  0x00007fc4a035c040 in Transaction::isActive() const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#7  0x00007fc4a035da5b in TransactionModel::progress() const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#8  0x00007fc4a037b4a5 in ?? () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9  0x00007fc4a037e2fb in TransactionModel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007fc49e926319 in ReadAccessor::Direct (property=..., n=0x0, output=0x7ffe71ccd7a0, object=0x7fc4a0595890) at jsruntime/qv4qobjectwrapper.cpp:129
#11 LoadProperty<ReadAccessor::Direct> (v4=0xce7a40, object=0x7fc4a0595890, property=..., notifier=0x0) at jsruntime/qv4qobjectwrapper.cpp:164
#12 0x00007fc49e9273c5 in QV4::QObjectWrapper::getProperty (engine=engine@entry=0xce7a40, object=0x7fc4a0595890, property=0xffdbf8, captureRequired=captureRequired@entry=true) at jsruntime/qv4qobjectwrapper.cpp:378
#13 0x00007fc49e927b4a in QV4::QObjectWrapper::getQmlProperty (this=0x7fc484deb3e8, qmlContext=0xf94240, name=0x7fc484deb3e0, revisionMode=QV4::QObjectWrapper::IgnoreRevision, hasProperty=0x0, includeImports=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:318
#14 0x00007fc49e93969e in QV4::Object::get (hasProperty=0x0, name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:298
#15 QV4::Runtime::getProperty (engine=0xce7a40, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:679
#16 0x00007fc484588130 in ?? ()
#17 0x00007ffe71ccdbd0 in ?? ()
#18 0x0000000000000002 in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x00007fc49e945cf0 in QQmlVMEMetaObject::metaCall (this=0x7fc484deb320, o=<optimized out>, c=1909250640, _id=-2065779744, a=0xce7a40) at qml/qqmlvmemetaobject.cpp:876
#21 0x00007fc49e9bf724 in QV4::Object::call (d=0x7fc484deb320, this=0x7fc47c714800) at ../../include/QtQml/5.6.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:324
#22 QQmlJavaScriptExpression::evaluate (this=this@entry=0xfe0ad0, callData=callData@entry=0x7fc484deb320, isUndefined=isUndefined@entry=0x7ffe71ccdc7c) at qml/qqmljavascriptexpression.cpp:189
#23 0x00007fc49e9bfbc1 in QQmlJavaScriptExpression::evaluate (this=this@entry=0xfe0ad0, isUndefined=isUndefined@entry=0x7ffe71ccdc7c) at qml/qqmljavascriptexpression.cpp:149
#24 0x00007fc49e9c747e in QQmlBinding::update (this=0xfe0ad0, flags=...) at qml/qqmlbinding.cpp:187
#25 0x00007fc49e9c798e in QQmlBinding::refresh (this=<optimized out>) at qml/qqmlbinding.cpp:403
#26 0x00007fc49e99eace in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:94
#27 0x00007fc49e94a4ac in QQmlData::signalEmitted (object=0x7fc4a0595890, index=31, a=0x0) at qml/qqmlengine.cpp:773
#28 0x00007fc49e25c2b0 in QMetaObject::activate (sender=0x7fc4a0595890, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3616
#29 0x00007fc49e25cc24 in QtPrivate::QSlotObjectBase::call (a=0x7ffe71ccf8b0, r=0x7fc4a0595890, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#30 QMetaObject::activate (sender=sender@entry=0x7fc4a0595890, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7ffe71ccf8b0) at kernel/qobject.cpp:3715
#31 0x00007fc49e25d1b7 in QMetaObject::activate (sender=sender@entry=0x7fc4a0595890, m=m@entry=0x7fc49e477da0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7ffe71ccf8b0) at kernel/qobject.cpp:3595
#32 0x00007fc49e2d50b4 in QAbstractItemModel::rowsRemoved (this=this@entry=0x7fc4a0595890, _t1=..., _t2=-1, _t3=-1) at .moc/moc_qabstractitemmodel.cpp:615
#33 0x00007fc49e1d799b in QAbstractItemModel::endRemoveRows (this=0x7fc4a0595890) at itemmodels/qabstractitemmodel.cpp:2678
#34 0x00007fc4a035ea9c in TransactionModel::removeTransaction(Transaction*) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#35 0x00007fc49e25cc24 in QtPrivate::QSlotObjectBase::call (a=0x7ffe71ccfab0, r=0x7fc4a0595890, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#36 QMetaObject::activate (sender=sender@entry=0x43c3920, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe71ccfab0) at kernel/qobject.cpp:3715
#37 0x00007fc49e25d1b7 in QMetaObject::activate (sender=sender@entry=0x43c3920, m=m@entry=0x7fc49e46f820 <QObject::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe71ccfab0) at kernel/qobject.cpp:3595
#38 0x00007fc49e25d25f in QObject::destroyed (this=this@entry=0x43c3920, _t1=_t1@entry=0x43c3920) at .moc/moc_qobject.cpp:213
#39 0x00007fc49e263cf5 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:913
#40 0x00007fc4a036f08d in ?? () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#41 0x00007fc49e25d750 in QObject::event (this=0x43c3920, e=<optimized out>) at kernel/qobject.cpp:1247
#42 0x00007fc49f1ecafc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x43c3920, e=0x440a270) at kernel/qapplication.cpp:3804
#43 0x00007fc49f1f2036 in QApplication::notify (this=0x7ffe71cd0190, receiver=0x43c3920, e=0x440a270) at kernel/qapplication.cpp:3561
#44 0x00007fc49e2302a8 in QCoreApplication::notifyInternal2 (receiver=0x43c3920, event=event@entry=0x440a270) at kernel/qcoreapplication.cpp:1015
#45 0x00007fc49e23216a in QCoreApplication::sendEvent (event=0x440a270, 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=0xc37de0) at kernel/qcoreapplication.cpp:1650
#47 0x00007fc49e232628 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
#48 0x00007fc49e284f53 in postEventSourceDispatch (s=0xc7c360) at kernel/qeventdispatcher_glib.cpp:270
#49 0x00007fc49a81f197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007fc49a81f3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007fc49a81f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007fc49e28535f in QEventDispatcherGlib::processEvents (this=0xc8c740, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#53 0x00007fc49e22dffa in QEventLoop::exec (this=this@entry=0x7ffe71cd00b0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#54 0x00007fc49e2366bc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#55 0x000000000040a2d5 in ?? ()
#56 0x00007fc49d579830 in __libc_start_main (main=0x409bc0, argc=3, argv=0x7ffe71cd0328, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe71cd0318) at ../csu/libc-start.c:291
#57 0x000000000040a419 in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 388799.

Possible duplicates by query: bug 388799, bug 388504, bug 387916, bug 387653, bug 387488.

Reported using DrKonqi