Bug 397955

Application: plasma-discover (5.13.80)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.15.0-33-generic x86_64
Distribution: KDE neon Developer Edition

-- Information about the crash:
- What I was doing when the application crashed:
Looking for updates and applications. Discover just force closed by itself.
- Unusual behavior I noticed:
None. Discover was working as usual.
- Custom settings of the application:
None

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 0x7f70e156d8c0 (LWP 3524))]

Thread 7 (Thread 0x7f7095b94700 (LWP 3536)):
#0  0x00007f70dc82974d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f70d746a38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f70d746a49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f70dd44a0bb in QEventDispatcherGlib::processEvents (this=0x7f70900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f70dd3f15ba in QEventLoop::exec (this=this@entry=0x7f7095b93cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f70dd2265e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f70dd231727 in QThreadPrivate::start (arg=0x15418b0) at thread/qthread_unix.cpp:367
#7  0x00007f70d92cf6ba in start_thread (arg=0x7f7095b94700) at pthread_create.c:333
#8  0x00007f70dc83541d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f70a5fa7700 (LWP 3531)):
#0  0x00007f70dc82974d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f70d746a38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f70d746a49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f70dd44a0bb in QEventDispatcherGlib::processEvents (this=0x7f70980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f70dd3f15ba in QEventLoop::exec (this=this@entry=0x7f70a5fa6cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f70dd2265e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f70dd231727 in QThreadPrivate::start (arg=0x18367a0) at thread/qthread_unix.cpp:367
#7  0x00007f70d92cf6ba in start_thread (arg=0x7f70a5fa7700) at pthread_create.c:333
#8  0x00007f70dc83541d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f70a74e0700 (LWP 3530)):
#0  0x00007f70dc82974d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f70d746a38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f70d746a49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f70dd44a0bb in QEventDispatcherGlib::processEvents (this=0x7f70a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f70dd3f15ba in QEventLoop::exec (this=this@entry=0x7f70a74dfcf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f70dd2265e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f70dd231727 in QThreadPrivate::start (arg=0x10d9b00) at thread/qthread_unix.cpp:367
#7  0x00007f70d92cf6ba in start_thread (arg=0x7f70a74e0700) at pthread_create.c:333
#8  0x00007f70dc83541d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f70b0134700 (LWP 3529)):
#0  0x00007f70dc82527d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f70d74ad6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f70d7469e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f70d746a330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f70d746a49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f70dd44a0bb in QEventDispatcherGlib::processEvents (this=0x7f70a80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f70dd3f15ba in QEventLoop::exec (this=this@entry=0x7f70b0133c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f70dd2265e4 in QThread::exec (this=this@entry=0x1788be0) at thread/qthread.cpp:525
#8  0x00007f70e0675f86 in QQuickPixmapReader::run (this=0x1788be0) at util/qquickpixmapcache.cpp:934
#9  0x00007f70dd231727 in QThreadPrivate::start (arg=0x1788be0) at thread/qthread_unix.cpp:367
#10 0x00007f70d92cf6ba in start_thread (arg=0x7f70b0134700) at pthread_create.c:333
#11 0x00007f70dc83541d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f70c54e3700 (LWP 3528)):
#0  QThreadData::current (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:240
#1  0x00007f70dd44a4c1 in postEventSourcePrepare (timeout=0x0, s=0x7f70b80012d0) at kernel/qeventdispatcher_glib.cpp:252
#2  postEventSourceCheck (source=0x7f70b80012d0) at kernel/qeventdispatcher_glib.cpp:269
#3  0x00007f70d7469dc1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f70d746a330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f70d746a49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f70dd44a0bb in QEventDispatcherGlib::processEvents (this=0x7f70b80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007f70dd3f15ba in QEventLoop::exec (this=this@entry=0x7f70c54e2cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#8  0x00007f70dd2265e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#9  0x00007f70dddb1195 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f70dd231727 in QThreadPrivate::start (arg=0x1121270) at thread/qthread_unix.cpp:367
#11 0x00007f70d92cf6ba in start_thread (arg=0x7f70c54e3700) at pthread_create.c:333
#12 0x00007f70dc83541d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f70c66f4700 (LWP 3527)):
#0  0x00007f70dc82527d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f70d74ad6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f70d7469e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f70d746a330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f70d746a49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f70dd44a0bb in QEventDispatcherGlib::processEvents (this=0x7f70c00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f70dd3f15ba in QEventLoop::exec (this=this@entry=0x7f70c66f3cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f70dd2265e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#8  0x00007f70df16cf35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f70dd231727 in QThreadPrivate::start (arg=0x7f70df3e5d60) at thread/qthread_unix.cpp:367
#10 0x00007f70d92cf6ba in start_thread (arg=0x7f70c66f4700) at pthread_create.c:333
#11 0x00007f70dc83541d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f70e156d8c0 (LWP 3524)):
[KCrash Handler]
#6  0x00007f70dd4221f6 in QMetaObjectPrivate::disconnect (sender=0x69de892, signal_index=53, smeta=0x7f70cd034340 <QQuickMenu::staticMetaObject>, receiver=0xc1, method_index=-1, slot=0x7ffeb6e89f90, disconnectType=QMetaObjectPrivate::DisconnectAll) at kernel/qobject.cpp:3424
#7  0x00007f70dd422927 in QObject::disconnectImpl (sender=0x69de892, signal=signal@entry=0x7ffeb6e89f80, receiver=receiver@entry=0xc1, slot=slot@entry=0x7ffeb6e89f90, senderMetaObject=senderMetaObject@entry=0x7f70cd034340 <QQuickMenu::staticMetaObject>) at kernel/qobject.cpp:4986
#8  0x00007f70ccda46a7 in QObject::disconnect<void (QQuickMenu::*)(bool), void (QQuickMenu::*)(bool)> (slot=(void (QQuickMenu::*)(QQuickMenu * const, bool)) 0x7f70ccda3fb0 <QQuickMenu::setCascade(bool)>, receiver=0xc1, signal=(void (QQuickMenu::*)(QQuickMenu * const, bool)) 0x7f70ccda33a0 <QQuickMenu::cascadeChanged(bool)>, sender=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:367
#9  QQuickMenuPrivate::setParentMenu (this=0x6a8d080, parent=parent@entry=0x0) at qquickmenu.cpp:486
#10 0x00007f70ccda5d2b in QQuickMenuPrivate::removeItem (this=0x69f77c0, index=<optimized out>, item=<optimized out>) at qquickmenu.cpp:238
#11 0x00007f70e072da13 in QQuickItemPrivate::itemChange (this=this@entry=0x3abb4c0, change=change@entry=QQuickItem::ItemParentHasChanged, data=...) at items/qquickitem.cpp:6206
#12 0x00007f70e073ab17 in QQuickItem::setParentItem (this=0x69b6c80, parentItem=parentItem@entry=0x0) at items/qquickitem.cpp:2791
#13 0x00007f70e073b71c in QQuickItem::~QQuickItem (this=0x6a53380, __in_chrg=<optimized out>) at items/qquickitem.cpp:2391
#14 0x00007f70e073ba99 in QQuickItem::~QQuickItem (this=0x6a53380, __in_chrg=<optimized out>) at items/qquickitem.cpp:2439
#15 0x00007f70dd41daf3 in QObjectPrivate::deleteChildren (this=this@entry=0x6b641a0) at kernel/qobject.cpp:1997
#16 0x00007f70dd427be4 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1025
#17 0x00007f70e073b82c in QQuickItem::~QQuickItem (this=0x62984e0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2378
#18 0x00007f70e075a476 in QQmlPrivate::QQmlElement<QQuickListView>::~QQmlElement (this=0x62984e0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:103
#19 QQmlPrivate::QQmlElement<QQuickListView>::~QQmlElement (this=0x62984e0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:103
#20 0x00007f70dd41daf3 in QObjectPrivate::deleteChildren (this=this@entry=0x69f77c0) at kernel/qobject.cpp:1997
#21 0x00007f70dd427be4 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1025
#22 0x00007f70b7dc06ae in QQuickMenu::~QQuickMenu (this=0x3897ec0, __in_chrg=<optimized out>) at ../../../include/QtQuickTemplates2/5.11.1/QtQuickTemplates2/private/../../../../../src/quicktemplates2/qquickmenu_p.h:63
#23 QQmlPrivate::QQmlElement<QQuickMenu>::~QQmlElement (this=0x3897ec0, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:103
#24 QQmlPrivate::QQmlElement<QQuickMenu>::~QQmlElement (this=0x3897ec0, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:103
#25 0x00007f70dd41daf3 in QObjectPrivate::deleteChildren (this=this@entry=0x691e4c0) at kernel/qobject.cpp:1997
#26 0x00007f70dd427be4 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1025
#27 0x00007f70e073b82c in QQuickItem::~QQuickItem (this=0x644f460, __in_chrg=<optimized out>) at items/qquickitem.cpp:2378
#28 0x00007f70e075a626 in QQmlPrivate::QQmlElement<QQuickMouseArea>::~QQmlElement (this=0x644f460, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:103
#29 QQmlPrivate::QQmlElement<QQuickMouseArea>::~QQmlElement (this=0x644f460, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:103
#30 0x00007f70dd41daf3 in QObjectPrivate::deleteChildren (this=this@entry=0x3dc3500) at kernel/qobject.cpp:1997
#31 0x00007f70dd427be4 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1025
#32 0x00007f70e073b82c in QQuickItem::~QQuickItem (this=0x6a4c240, __in_chrg=<optimized out>) at items/qquickitem.cpp:2378
#33 0x00007f70e075a0a6 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x6a4c240, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:103
#34 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x6a4c240, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:103
#35 0x00007f70dd420ff0 in QObject::event (this=this@entry=0x6a4c240, e=e@entry=0x3579e00) at kernel/qobject.cpp:1242
#36 0x00007f70e07399ab in QQuickItem::event (this=0x6a4c240, ev=0x3579e00) at items/qquickitem.cpp:8003
#37 0x00007f70dea4d39c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x6a4c240, e=0x3579e00) at kernel/qapplication.cpp:3727
#38 0x00007f70dea54ab0 in QApplication::notify (this=0x7ffeb6e8ada0, receiver=0x6a4c240, e=0x3579e00) at kernel/qapplication.cpp:3486
#39 0x00007f70dd3f3228 in QCoreApplication::notifyInternal2 (receiver=0x6a4c240, event=event@entry=0x3579e00) at kernel/qcoreapplication.cpp:1048
#40 0x00007f70dd3f5e2e in QCoreApplication::sendEvent (event=0x3579e00, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x10879f0) at kernel/qcoreapplication.cpp:1745
#42 0x00007f70dd3f62a8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#43 0x00007f70dd44aa93 in postEventSourceDispatch (s=0x10d6150) at kernel/qeventdispatcher_glib.cpp:276
#44 0x00007f70d746a197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f70d746a3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f70d746a49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f70dd44a09f in QEventDispatcherGlib::processEvents (this=this@entry=0x10da3d0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#48 0x00007f70d138f9a1 in QPAEventDispatcherGlib::processEvents (this=0x10da3d0, flags=...) at qeventdispatcher_glib.cpp:69
#49 0x00007f70dd3f15ba in QEventLoop::exec (this=this@entry=0x7ffeb6e8acc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#50 0x00007f70dd3fa6c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#51 0x00007f70de238f8c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1762
#52 0x00007f70dea4d2f5 in QApplication::exec () at kernel/qapplication.cpp:2901
#53 0x00000000004133ff in main (argc=1, argv=<optimized out>) at /workspace/build/discover/main.cpp:156

Reported using DrKonqi