Bug 395993

Summary: Discover crashed after searching for a package.
Product: [Applications] Discover Reporter: n9p7v <dimitriounicholas>
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED WORKSFORME    
Severity: crash CC: elrefaei.omar
Priority: NOR Keywords: drkonqi, triaged
Version: 5.13.2   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Discover crash information
New crash information added by DrKonqi

Description n9p7v 2018-06-29 09:32:00 UTC 
Application: plasma-discover (5.13.2)

Qt Version: 5.11.0
Frameworks Version: 5.47.0
Operating System: Linux 4.15.0-24-generic x86_64
Distribution: KDE neon User Edition 5.13

-- Information about the crash:
- What I was doing when the application crashed:
I searched for a package and I opened the description of a similar one. Then I go back to the search box and I press the delete button. After that the Discover crashed.
- Unusual behavior I noticed:

The crash does not seem to be reproducible.

-- 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 0x7f002bcbe8c0 (LWP 1998))]

Thread 10 (Thread 0x7effdb5d2700 (LWP 2570)):
#0  0x00007f0021c06a94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0021bc1910 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc22bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7effcc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7effdb5d1cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f002797a5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#7  0x00007f0027985727 in QThreadPrivate::start (arg=0x5df6390) at thread/qthread_unix.cpp:367
#8  0x00007f0023a276ba in start_thread (arg=0x7effdb5d2700) at pthread_create.c:333
#9  0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7effdbdd3700 (LWP 2569)):
#0  0x00007f0021bc1998 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0021bc22bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7effd40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7effdbdd2cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f002797a5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#6  0x00007f0027985727 in QThreadPrivate::start (arg=0x7efff80ea030) at thread/qthread_unix.cpp:367
#7  0x00007f0023a276ba in start_thread (arg=0x7effdbdd3700) at pthread_create.c:333
#8  0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7effec8d5700 (LWP 2491)):
#0  0x00007f0026f7d74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f0021bc238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7effe00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7effec8d4cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f002797a5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#6  0x00007f0027985727 in QThreadPrivate::start (arg=0x2c13030) at thread/qthread_unix.cpp:367
#7  0x00007f0023a276ba in start_thread (arg=0x7effec8d5700) at pthread_create.c:333
#8  0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7effed8d6700 (LWP 2006)):
#0  0x00007f0026f7927d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f0021c056f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc1e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0021bc2330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7effdc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7effed8d5cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f002797a5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#8  0x00007f0027985727 in QThreadPrivate::start (arg=0x31ec590) at thread/qthread_unix.cpp:367
#9  0x00007f0023a276ba in start_thread (arg=0x7effed8d6700) at pthread_create.c:333
#10 0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7efff4f9f700 (LWP 2004)):
#0  0x00007f0026f7927d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f0021c056f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc1e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0021bc2330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7effe80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7efff4f9ecf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f002797a5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#8  0x00007f0027985727 in QThreadPrivate::start (arg=0x2dc69b0) at thread/qthread_unix.cpp:367
#9  0x00007f0023a276ba in start_thread (arg=0x7efff4f9f700) at pthread_create.c:333
#10 0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7efff64d8700 (LWP 2003)):
#0  0x00007f0026f7927d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f0021c056f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc1e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0021bc2330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7efff00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7efff64d7cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f002797a5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#8  0x00007f0027985727 in QThreadPrivate::start (arg=0x2dc1760) at thread/qthread_unix.cpp:367
#9  0x00007f0023a276ba in start_thread (arg=0x7efff64d8700) at pthread_create.c:333
#10 0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7efffefce700 (LWP 2002)):
#0  0x00007f0026f7927d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f0021c056f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc1e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0021bc2330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7efff80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7efffefcdc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f002797a5e4 in QThread::exec (this=this@entry=0x2d5f610) at thread/qthread.cpp:522
#8  0x00007f002adc2e66 in QQuickPixmapReader::run (this=0x2d5f610) at util/qquickpixmapcache.cpp:934
#9  0x00007f0027985727 in QThreadPrivate::start (arg=0x2d5f610) at thread/qthread_unix.cpp:367
#10 0x00007f0023a276ba in start_thread (arg=0x7efffefce700) at pthread_create.c:333
#11 0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f000ef1e700 (LWP 2001)):
#0  0x00007f0026f7927d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f0021c056f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc1e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0021bc2330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7f00000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7f000ef1dcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f002797a5e4 in QThread::exec (this=this@entry=0x27a9ae0) at thread/qthread.cpp:522
#8  0x00007f0028502cf5 in QQmlThreadPrivate::run (this=0x27a9ae0) at qml/ftw/qqmlthread.cpp:148
#9  0x00007f0027985727 in QThreadPrivate::start (arg=0x27a9ae0) at thread/qthread_unix.cpp:367
#10 0x00007f0023a276ba in start_thread (arg=0x7f000ef1e700) at pthread_create.c:333
#11 0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f001012f700 (LWP 2000)):
#0  0x00007f0021bc1da8 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0021bc2330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0021bc249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0027b9dbeb in QEventDispatcherGlib::processEvents (this=0x7f00080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f0027b451ca in QEventLoop::exec (this=this@entry=0x7f001012ecc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f002797a5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#6  0x00007f00298baf35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f0027985727 in QThreadPrivate::start (arg=0x7f0029b33d60) at thread/qthread_unix.cpp:367
#8  0x00007f0023a276ba in start_thread (arg=0x7f001012f700) at pthread_create.c:333
#9  0x00007f0026f8941d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f002bcbe8c0 (LWP 1998)):
[KCrash Handler]
#6  0x00007effef7fd728 in vtable for PackageKitResource () from /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/packagekit-backend.so
#7  0x00007f0027b50a29 in QMetaObject::cast (this=0x7f0027fbfa40 <QObject::staticMetaObject>, obj=0x6a614e0) at kernel/qmetaobject.cpp:366
#8  0x00007f0027b50a65 in QMetaObject::cast (this=<optimized out>, obj=<optimized out>) at kernel/qmetaobject.cpp:355
#9  0x00007f0028304a86 in qobject_cast<QObject*> (object=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:504
#10 QtPrivate::QVariantValueHelper<QObject*>::object (v=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:732
#11 QtPrivate::ObjectInvoker<QtPrivate::QVariantValueHelper<QObject*>, QVariant const&, QObject*>::invoke (a=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:106
#12 qvariant_cast<QObject*> (v=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:858
#13 VDMObjectDelegateDataType::createItem (this=0x76ce780, model=..., metaType=0x76990b0, index=0) at util/qqmladaptormodel.cpp:762
#14 0x00007f0028546048 in QQmlAdaptorModel::createItem (index=<optimized out>, metaType=<optimized out>, this=0x7698cd8) at ../../include/QtQml/5.11.0/QtQml/private/../../../../../src/qml/util/qqmladaptormodel_p.h:127
#15 QQmlDelegateModelPrivate::object (this=this@entry=0x7698c50, group=QQmlListCompositor::Default, index=index@entry=0, incubationMode=incubationMode@entry=QQmlIncubator::AsynchronousIfNested) at types/qqmldelegatemodel.cpp:948
#16 0x00007f0028546272 in QQmlDelegateModel::object (this=<optimized out>, index=0, incubationMode=QQmlIncubator::AsynchronousIfNested) at types/qqmldelegatemodel.cpp:1038
#17 0x00007f002853b3f0 in QQmlInstantiatorPrivate::modelObject (async=<optimized out>, index=0, this=0x76938d0) at types/qqmlinstantiator.cpp:92
#18 QQmlInstantiatorPrivate::regenerate (this=this@entry=0x76938d0) at types/qqmlinstantiator.cpp:115
#19 0x00007f002853b6db in QQmlInstantiator::setModel (this=this@entry=0x7693810, v=...) at types/qqmlinstantiator.cpp:446
#20 0x00007f002853b882 in QQmlInstantiator::componentComplete (this=0x7693810) at types/qqmlinstantiator.cpp:502
#21 0x00007f00284f6d6a in QQmlObjectCreator::finalize (this=0x6ff9290, interrupt=...) at qml/qqmlobjectcreator.cpp:1359
#22 0x00007f0028470ef2 in QQmlIncubatorPrivate::incubate (this=this@entry=0x6ff91b0, i=...) at qml/qqmlincubator.cpp:344
#23 0x00007f0028471995 in QQmlEnginePrivate::incubate (this=this@entry=0x27a6d40, i=..., forContext=forContext@entry=0x6ff90f0) at qml/qqmlincubator.cpp:89
#24 0x00007f002846c7e4 in QQmlComponent::create (this=<optimized out>, incubator=..., context=<optimized out>, forContext=forContext@entry=0x0) at qml/qqmlcomponent.cpp:1063
#25 0x00007f002af2606a in QQuickLoaderPrivate::_q_sourceLoaded (this=this@entry=0x71c9d40) at items/qquickloader.cpp:741
#26 0x00007f002af26208 in QQuickLoaderPrivate::load (this=0x71c9d40) at items/qquickloader.cpp:616
#27 0x00007f00284f6d6a in QQmlObjectCreator::finalize (this=0x7025850, interrupt=...) at qml/qqmlobjectcreator.cpp:1359
#28 0x00007f0028470ef2 in QQmlIncubatorPrivate::incubate (this=this@entry=0x70cffd0, i=...) at qml/qqmlincubator.cpp:344
#29 0x00007f0028471995 in QQmlEnginePrivate::incubate (this=0x27a6d40, i=..., forContext=forContext@entry=0x8000000000000000) at qml/qqmlincubator.cpp:89
#30 0x00007f002846ca78 in QQmlComponentPrivate::incubateObject (this=this@entry=0x3cc7360, incubationTask=<optimized out>, component=<optimized out>, engine=<optimized out>, context=context@entry=0x7265370, forContext=0x8000000000000000, forContext@entry=0x3cbd410) at qml/qqmlcomponent.cpp:1089
#31 0x00007f0028545fc3 in QQmlDelegateModelPrivate::object (this=this@entry=0x3cc7550, group=QQmlListCompositor::Default, index=index@entry=1, incubationMode=incubationMode@entry=QQmlIncubator::AsynchronousIfNested) at types/qqmldelegatemodel.cpp:1002
#32 0x00007f0028546272 in QQmlDelegateModel::object (this=<optimized out>, index=1, incubationMode=QQmlIncubator::AsynchronousIfNested) at types/qqmldelegatemodel.cpp:1038
#33 0x00007f002af94ef4 in QQuickRepeaterPrivate::requestItems (this=0x3cc6fe0) at items/qquickrepeater.cpp:407
#34 0x00007f002af952ec in QQuickRepeater::regenerate (this=this@entry=0x3cc6f20) at items/qquickrepeater.cpp:401
#35 0x00007f002af956fe in QQuickRepeater::setModel (this=0x3cc6f20, m=...) at items/qquickrepeater.cpp:244
#36 0x00007f002af974d5 in QQuickRepeater::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=0x7ffed3c5bfe0) at .moc/moc_qquickrepeater_p.cpp:224
#37 0x00007f002846aa42 in QQmlPropertyData::writeProperty (this=this@entry=0x7f00002000c8, target=target@entry=0x3cc6f20, value=value@entry=0x7ffed3c5c170, flags=...) at ../../include/QtQml/5.11.0/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:346
#38 0x00007f00284699d4 in QQmlPropertyPrivate::write (object=0x3cc6f20, property=..., value=..., context=0x3cbd410, flags=...) at qml/qqmlproperty.cpp:1270
#39 0x00007f002846a56f in QQmlPropertyPrivate::writeValueProperty (object=<optimized out>, core=..., valueTypeData=..., value=..., context=<optimized out>, flags=..., flags@entry=...) at qml/qqmlproperty.cpp:1187
#40 0x00007f00284ea1cd in QQmlBinding::slowWrite (this=this@entry=0x3cc72a0, core=..., valueTypeData=..., result=..., isUndefined=isUndefined@entry=false, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:459
#41 0x00007f00284ebac0 in GenericBinding<0>::write (this=0x3cc72a0, result=..., isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:327
#42 0x00007f00284ed1e9 in QQmlNonbindingBinding::doUpdate (this=0x3cc72a0, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:249
#43 0x00007f00284e9b83 in QQmlBinding::update (this=0x3cc72a0, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:185
#44 0x00007f00284e9e8e in QQmlBinding::refresh (this=<optimized out>) at qml/qqmlbinding.cpp:532
#45 0x00007f00284bd5d7 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:106
#46 0x00007f0028458404 in QQmlData::signalEmitted (object=0x2a36130, index=50, a=0x0) at qml/qqmlengine.cpp:861
#47 0x00007f0027b741f2 in QMetaObject::activate (sender=0x2a36130, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=argv@entry=0x0) at kernel/qobject.cpp:3649
#48 0x00007f00284524a5 in QQmlVMEMetaObject::activate (this=this@entry=0x2a36400, object=<optimized out>, index=<optimized out>, args=args@entry=0x0) at qml/qqmlvmemetaobject.cpp:1246
#49 0x00007f002845403f in QQmlVMEMetaObject::metaCall (this=0x2a36400, o=<optimized out>, c=<optimized out>, _id=<optimized out>, a=<optimized out>) at qml/qqmlvmemetaobject.cpp:839
#50 0x00007f0028453767 in QQmlVMEMetaObject::metaCall (this=0x2a42290, o=<optimized out>, c=QMetaObject::WriteProperty, _id=62, a=0x7ffed3c5e150) at qml/qqmlvmemetaobject.cpp:979
#51 0x00007f00284ec6c6 in QQmlPropertyData::writeProperty (flags=..., value=0x7ffed3c5e11c, target=<optimized out>, this=<optimized out>) at ../../include/QtQml/5.11.0/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:350
#52 GenericBinding<2>::doStore<int> (flags=..., pd=<optimized out>, value=2, this=0x2a36880) at qml/qqmlbinding.cpp:334
#53 GenericBinding<2>::write (this=0x2a36880, result=..., isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:301
#54 0x00007f00284ed1e9 in QQmlNonbindingBinding::doUpdate (this=0x2a36880, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:249
#55 0x00007f00284e9b83 in QQmlBinding::update (this=0x2a36880, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:185
#56 0x00007f00284e9e8e in QQmlBinding::refresh (this=<optimized out>) at qml/qqmlbinding.cpp:532
#57 0x00007f00284bd5d7 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x7ffed3c5fd50) at qml/qqmlnotifier.cpp:106
#58 0x00007f0028458404 in QQmlData::signalEmitted (object=0x2a36920, index=5, a=0x7ffed3c5fd50) at qml/qqmlengine.cpp:861
#59 0x00007f0027b741f2 in QMetaObject::activate (sender=sender@entry=0x2a36920, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffed3c5fd50) at kernel/qobject.cpp:3649
#60 0x00007f0027b74497 in QMetaObject::activate (sender=sender@entry=0x2a36920, m=m@entry=0x7f002b2ef0c0 <QQuickAbstractAnimation::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffed3c5fd50) at kernel/qobject.cpp:3633
#61 0x00007f002ad95a52 in QQuickAbstractAnimation::runningChanged (this=this@entry=0x2a36920, _t1=false) at .moc/moc_qquickanimation_p.cpp:311
#62 0x00007f002ad9ac43 in QQuickAbstractAnimation::setRunning (this=0x2a36920, r=<optimized out>) at util/qquickanimation.cpp:296
#63 0x00007f002ad9f2ab in QQuickAbstractAnimation::qt_metacall (this=this@entry=0x2a36920, _c=_c@entry=QMetaObject::WriteProperty, _id=0, _a=_a@entry=0x7ffed3c5ff50) at .moc/moc_qquickanimation_p.cpp:278
#64 0x00007f002ad9f845 in QQuickAnimationGroup::qt_metacall (this=0x2a36920, _c=QMetaObject::WriteProperty, _id=<optimized out>, _a=0x7ffed3c5ff50) at .moc/moc_qquickanimation_p.cpp:1797
#65 0x00007f0028453722 in QQmlVMEMetaObject::metaCall (this=0x2a36ac0, o=<optimized out>, c=QMetaObject::WriteProperty, _id=1, a=0x7ffed3c5ff50) at qml/qqmlvmemetaobject.cpp:981
#66 0x00007f002846a9fc in QQmlPropertyData::writeProperty (this=this@entry=0x7f00000f5628, target=target@entry=0x2a36920, value=<optimized out>, flags=...) at ../../include/QtQml/5.11.0/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:350
#67 0x00007f00284693d8 in QQmlPropertyPrivate::write (object=object@entry=0x2a36920, property=..., value=..., context=0x2a35ee0, flags=..., flags@entry=...) at qml/qqmlproperty.cpp:1219
#68 0x00007f0028420476 in QV4::QObjectWrapper::setProperty (engine=engine@entry=0x27ab770, object=object@entry=0x2a36920, property=0x7f00000f5628, value=...) at jsruntime/qv4qobjectwrapper.cpp:559
#69 0x00007f0028420fe0 in QV4::QObjectWrapper::setQmlProperty (engine=0x27ab770, qmlContext=<optimized out>, object=0x2a36920, name=<optimized out>, revisionMode=QV4::QObjectWrapper::IgnoreRevision, value=...) at jsruntime/qv4qobjectwrapper.cpp:429
#70 0x00007f00284210de in QV4::QObjectWrapper::put (m=0x7f000e2df7b0, name=0x7f000e2df7a8, value=...) at jsruntime/qv4qobjectwrapper.cpp:706
#71 0x00007f0028433e9d in QV4::Object::put (v=..., name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:370
#72 QV4::Runtime::method_storeProperty (engine=engine@entry=0x27ab770, object=..., nameIndex=<optimized out>, value=...) at jsruntime/qv4runtime.cpp:549
#73 0x00007f002843f079 in storePropertyHelper (f=0x2a35df0, base=..., name=<optimized out>, value=...) at jit/qv4jit.cpp:368
#74 0x00007f000c0258c2 in ?? ()
#75 0x0000000000000000 in ?? ()

Reported using DrKonqi
Comment 1 Aleix Pol 2018-07-06 11:04:30 UTC 
Could you please try to reproduce with debug symbols?
https://wiki.ubuntu.com/DebuggingProgramCrash#Non-built-in_debug_symbol_packages_.28.2A-dbgsym.29
Comment 2 n9p7v 2018-07-13 05:35:09 UTC 
Created attachment 113914 [details]
Discover crash information
Comment 3 n9p7v 2018-07-13 05:36:52 UTC 
(In reply to Aleix Pol from comment #1)
> Could you please try to reproduce with debug symbols?
> https://wiki.ubuntu.com/DebuggingProgramCrash#Non-built-
> in_debug_symbol_packages_.28.2A-dbgsym.29

I can't reproduce the crash, it happens randomly.
Comment 4 Omar 2018-08-15 09:47:56 UTC 
Created attachment 114440 [details]
New crash information added by DrKonqi

plasma-discover (5.13.4) using Qt 5.11.1

- What I was doing when the application crashed: Searched for an application, opened description, and returned to the application list, then discover crashed

- Unusual behavior I noticed: The search results disappeared for a second before the crash, without altering the search string

-- Backtrace (Reduced):
#8  0x00007efbfbc73aa6 in qobject_cast<QObject*> (object=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:504
#9  QtPrivate::QVariantValueHelper<QObject*>::object (v=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:732
#10 QtPrivate::ObjectInvoker<QtPrivate::QVariantValueHelper<QObject*>, QVariant const&, QObject*>::invoke (a=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:106
#11 qvariant_cast<QObject*> (v=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:858
#12 VDMObjectDelegateDataType::createItem (this=0x676d8b0, model=..., metaType=0x676d7a0, index=0) at util/qqmladaptormodel.cpp:762
Comment 5 Andrew Crouthamel 2018-09-28 03:22:45 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 6 Andrew Crouthamel 2018-10-29 02:09:34 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!