Bug 386847

Application: plasma-discover (5.8.8)

Qt Version: 5.6.1
Frameworks Version: 5.36.0
Operating System: Linux 4.4.0-98-generic x86_64
Distribution: Ubuntu 16.04.3 LTS

-- Information about the crash:
As of recently when prompted for a software update every time Discover crashes after a software update process is completet. SW updates seem OK but finishing Discover seems to be a problem. 
Starting and closing Discover from the applications starter menu works without problem.

The crash can be reproduced every time.

-- Backtrace:
Application: Entdecken (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2cb66608c0 (LWP 3438))]

Thread 9 (Thread 0x7f2c6a074700 (LWP 3459)):
#0  0x00007f2cb0082200 in g_ptr_array_set_size () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2cb00ad871 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2cb00ae2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2cb00ae49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2cb3b1437b in QEventDispatcherGlib::processEvents (this=0x7f2c600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f2cb3abcffa in QEventLoop::exec (this=this@entry=0x7f2c6a073d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2cb38e59e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#7  0x00007f2cb38ea808 in QThreadPrivate::start (arg=0x2b88fb0) at thread/qthread_unix.cpp:341
#8  0x00007f2cb081b6ba in start_thread (arg=0x7f2c6a074700) at pthread_create.c:333
#9  0x00007f2cb2eef3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f2c79175700 (LWP 3454)):
#0  0x00007f2cb00ab468 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2cb00adcea in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2cb00ae330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2cb00ae49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2cb3b1437b in QEventDispatcherGlib::processEvents (this=0x7f2c700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f2cb3abcffa in QEventLoop::exec (this=this@entry=0x7f2c79174d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2cb38e59e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#7  0x00007f2cb38ea808 in QThreadPrivate::start (arg=0x271bec0) at thread/qthread_unix.cpp:341
#8  0x00007f2cb081b6ba in start_thread (arg=0x7f2c79175700) at pthread_create.c:333
#9  0x00007f2cb2eef3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f2c7b38f700 (LWP 3449)):
#0  __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:57
#1  0x00007f2cb2ee3702 in poll () at ../sysdeps/unix/syscall-template.S:84
#2  0x00007f2cb00ae38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2cb00ae712 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2c80c659d6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007f2cb00d4bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f2cb081b6ba in start_thread (arg=0x7f2c7b38f700) at pthread_create.c:333
#7  0x00007f2cb2eef3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f2c7bb90700 (LWP 3448)):
#0  0x00007f2cb00f2a79 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2cb00adc3e in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2cb00ae330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2cb00ae49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2cb00ae4d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2cb00d4bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f2cb081b6ba in start_thread (arg=0x7f2c7bb90700) at pthread_create.c:333
#7  0x00007f2cb2eef3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f2c8ba34700 (LWP 3443)):
#0  0x00007f2cb2ee370d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2cb00ae38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2cb00ae49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2cb3b1437b in QEventDispatcherGlib::processEvents (this=0x7f2c7c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007f2cb3abcffa in QEventLoop::exec (this=this@entry=0x7f2c8ba33d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2cb38e59e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007f2cb38ea808 in QThreadPrivate::start (arg=0x7f2c84003650) at thread/qthread_unix.cpp:341
#7  0x00007f2cb081b6ba in start_thread (arg=0x7f2c8ba34700) at pthread_create.c:333
#8  0x00007f2cb2eef3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f2c8c235700 (LWP 3442)):
#0  0x00007f2cb2ee370d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2cb00ae38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2cb00ae49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2cb3b1437b in QEventDispatcherGlib::processEvents (this=0x7f2c840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007f2cb3abcffa in QEventLoop::exec (this=this@entry=0x7f2c8c234c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2cb38e59e4 in QThread::exec (this=this@entry=0x27d7e30) at thread/qthread.cpp:500
#6  0x00007f2cb5f2b7d6 in QQuickPixmapReader::run (this=0x27d7e30) at util/qquickpixmapcache.cpp:817
#7  0x00007f2cb38ea808 in QThreadPrivate::start (arg=0x27d7e30) at thread/qthread_unix.cpp:341
#8  0x00007f2cb081b6ba in start_thread (arg=0x7f2c8c235700) at pthread_create.c:333
#9  0x00007f2cb2eef3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f2c975ef700 (LWP 3441)):
#0  0x00007fff90bbfcd9 in clock_gettime ()
#1  0x00007f2cb2efd836 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f2c975eea40) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2cb39966c6 in qt_clock_gettime (ts=0x7f2c975eea40, 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  0x00007f2cb3b11f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f2c90002cd0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f2cb3b12475 in QTimerInfoList::timerWait (this=0x7f2c90002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007f2cb3b1385e in timerSourcePrepareHelper (timeout=0x7f2c975eeb14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:126
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f2c975eeb14) at kernel/qeventdispatcher_glib.cpp:159
#9  0x00007f2cb00ad91d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f2cb00ae2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f2cb00ae49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f2cb3b1437b in QEventDispatcherGlib::processEvents (this=0x7f2c900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#13 0x00007f2cb3abcffa in QEventLoop::exec (this=this@entry=0x7f2c975eece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f2cb38e59e4 in QThread::exec (this=this@entry=0x242d7b0) at thread/qthread.cpp:500
#15 0x00007f2cb42696b5 in QQmlThreadPrivate::run (this=0x242d7b0) at qml/ftw/qqmlthread.cpp:141
#16 0x00007f2cb38ea808 in QThreadPrivate::start (arg=0x242d7b0) at thread/qthread_unix.cpp:341
#17 0x00007f2cb081b6ba in start_thread (arg=0x7f2c975ef700) at pthread_create.c:333
#18 0x00007f2cb2eef3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2c9c81d700 (LWP 3440)):
#0  0x00007f2cb00ae290 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2cb00ae49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2cb3b1437b in QEventDispatcherGlib::processEvents (this=0x7f2c980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#3  0x00007f2cb3abcffa in QEventLoop::exec (this=this@entry=0x7f2c9c81ccd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f2cb38e59e4 in QThread::exec (this=this@entry=0x7f2cb681ad40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
#5  0x00007f2cb67a7515 in QDBusConnectionManager::run (this=0x7f2cb681ad40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:189
#6  0x00007f2cb38ea808 in QThreadPrivate::start (arg=0x7f2cb681ad40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341
#7  0x00007f2cb081b6ba in start_thread (arg=0x7f2c9c81d700) at pthread_create.c:333
#8  0x00007f2cb2eef3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2cb66608c0 (LWP 3438)):
[KCrash Handler]
#6  0x00007f2cb5beb040 in Transaction::isActive() const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#7  0x00007f2cb5beca5b in TransactionModel::progress() const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#8  0x00007f2cb5c0a4a5 in ?? () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9  0x00007f2cb5c0d2fb in TransactionModel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007f2cb41b5319 in ReadAccessor::Direct (property=..., n=0x0, output=0x7fff90b6cc50, object=0x7f2cb5e24890) at jsruntime/qv4qobjectwrapper.cpp:129
#11 LoadProperty<ReadAccessor::Direct> (v4=0x242adc0, object=0x7f2cb5e24890, property=..., notifier=0x0) at jsruntime/qv4qobjectwrapper.cpp:164
#12 0x00007f2cb41b63c5 in QV4::QObjectWrapper::getProperty (engine=engine@entry=0x242adc0, object=0x7f2cb5e24890, property=0x26f3f78, captureRequired=captureRequired@entry=true) at jsruntime/qv4qobjectwrapper.cpp:378
#13 0x00007f2cb41b6b4a in QV4::QObjectWrapper::getQmlProperty (this=0x7f2c965f03e8, qmlContext=0x268bd30, name=0x7f2c965f03e0, revisionMode=QV4::QObjectWrapper::IgnoreRevision, hasProperty=0x0, includeImports=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:318
#14 0x00007f2cb41c869e in QV4::Object::get (hasProperty=0x0, name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:298
#15 QV4::Runtime::getProperty (engine=0x242adc0, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:679
#16 0x00007f2c95cf9130 in ?? ()
#17 0x00007fff90b6d080 in ?? ()
#18 0x0000000000000002 in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x00007f2cb41d4cf0 in QQmlVMEMetaObject::metaCall (this=0x7f2c965f0320, o=<optimized out>, c=2427899648, _id=-1772157984, a=0x242adc0) at qml/qqmlvmemetaobject.cpp:876
#21 0x00007f2cb424e724 in QV4::Object::call (d=0x7f2c965f0320, this=0x7f2c95cd8800) at ../../include/QtQml/5.6.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:324
#22 QQmlJavaScriptExpression::evaluate (this=this@entry=0x26d84b0, callData=callData@entry=0x7f2c965f0320, isUndefined=isUndefined@entry=0x7fff90b6d12c) at qml/qqmljavascriptexpression.cpp:189
#23 0x00007f2cb424ebc1 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x26d84b0, isUndefined=isUndefined@entry=0x7fff90b6d12c) at qml/qqmljavascriptexpression.cpp:149
#24 0x00007f2cb425647e in QQmlBinding::update (this=0x26d84b0, flags=...) at qml/qqmlbinding.cpp:187
#25 0x00007f2cb425698e in QQmlBinding::refresh (this=<optimized out>) at qml/qqmlbinding.cpp:403
#26 0x00007f2cb422dace in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:94
#27 0x00007f2cb41d94ac in QQmlData::signalEmitted (object=0x7f2cb5e24890, index=31, a=0x0) at qml/qqmlengine.cpp:773
#28 0x00007f2cb3aeb2b0 in QMetaObject::activate (sender=0x7f2cb5e24890, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3616
#29 0x00007f2cb3aebc24 in QtPrivate::QSlotObjectBase::call (a=0x7fff90b6ed60, r=0x7f2cb5e24890, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#30 QMetaObject::activate (sender=sender@entry=0x7f2cb5e24890, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fff90b6ed60) at kernel/qobject.cpp:3715
#31 0x00007f2cb3aec1b7 in QMetaObject::activate (sender=sender@entry=0x7f2cb5e24890, m=m@entry=0x7f2cb3d06da0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fff90b6ed60) at kernel/qobject.cpp:3595
#32 0x00007f2cb3b640b4 in QAbstractItemModel::rowsRemoved (this=this@entry=0x7f2cb5e24890, _t1=..., _t2=-1, _t3=-1) at .moc/moc_qabstractitemmodel.cpp:615
#33 0x00007f2cb3a6699b in QAbstractItemModel::endRemoveRows (this=0x7f2cb5e24890) at itemmodels/qabstractitemmodel.cpp:2678
#34 0x00007f2cb5beda9c in TransactionModel::removeTransaction(Transaction*) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#35 0x00007f2cb3aebc24 in QtPrivate::QSlotObjectBase::call (a=0x7fff90b6ef60, r=0x7f2cb5e24890, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#36 QMetaObject::activate (sender=sender@entry=0x641b220, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff90b6ef60) at kernel/qobject.cpp:3715
#37 0x00007f2cb3aec1b7 in QMetaObject::activate (sender=sender@entry=0x641b220, m=m@entry=0x7f2cb3cfe820 <QObject::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff90b6ef60) at kernel/qobject.cpp:3595
#38 0x00007f2cb3aec25f in QObject::destroyed (this=this@entry=0x641b220, _t1=_t1@entry=0x641b220) at .moc/moc_qobject.cpp:213
#39 0x00007f2cb3af2cf5 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:913
#40 0x00007f2cb5bfe08d in ?? () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#41 0x00007f2cb3aec750 in QObject::event (this=0x641b220, e=<optimized out>) at kernel/qobject.cpp:1247
#42 0x00007f2cb4a7bafc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x641b220, e=0x28b1bd0) at kernel/qapplication.cpp:3804
#43 0x00007f2cb4a81036 in QApplication::notify (this=0x7fff90b6f640, receiver=0x641b220, e=0x28b1bd0) at kernel/qapplication.cpp:3561
#44 0x00007f2cb3abf2a8 in QCoreApplication::notifyInternal2 (receiver=0x641b220, event=event@entry=0x28b1bd0) at kernel/qcoreapplication.cpp:1015
#45 0x00007f2cb3ac116a in QCoreApplication::sendEvent (event=0x28b1bd0, 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=0x2380de0) at kernel/qcoreapplication.cpp:1650
#47 0x00007f2cb3ac1628 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
#48 0x00007f2cb3b13f53 in postEventSourceDispatch (s=0x23d8530) at kernel/qeventdispatcher_glib.cpp:270
#49 0x00007f2cb00ae197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f2cb00ae3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007f2cb00ae49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f2cb3b1435f in QEventDispatcherGlib::processEvents (this=0x23d2830, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#53 0x00007f2cb3abcffa in QEventLoop::exec (this=this@entry=0x7fff90b6f560, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#54 0x00007f2cb3ac56bc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#55 0x000000000040a2d5 in ?? ()
#56 0x00007f2cb2e08830 in __libc_start_main (main=0x409bc0, argc=3, argv=0x7fff90b6f7d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff90b6f7c8) at ../csu/libc-start.c:291
#57 0x000000000040a419 in _start ()

Possible duplicates by query: bug 386774, bug 386618, bug 386615, bug 386477, bug 386447.

Reported using DrKonqi