Bug 375789

Summary: Discover crashed when rejecting the uninstallation of a packet due to an upgrade
Product: [Applications] Discover Reporter: Erin of Yukis <erin-kde>
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED FIXED    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: 5.8.5   
Target Milestone: ---   
Platform: Debian stable   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Erin of Yukis 2017-01-31 11:02:27 UTC 
Application: plasma-discover (5.8.5)

Qt Version: 5.7.1
Frameworks Version: 5.28.0
Operating System: Linux 4.9.0-1-amd64 x86_64
Distribution: Tanglu GNU/Linux 9.0 (stretch)

-- Information about the crash:
- What I was doing when the application crashed:

  1. Clicked "Update" on the system upgrade's panel
  2. (Quickly) reviewed the list of available upgrades (60 in total / Debian unstable) in Discover
  3. Clicked the "Update all" button
  4. Observed the dialog window that would simply contain the name of one package for a few seconds, before realizing that in the title it says "Remove…"
  5. Responded "No" to the dialog since I wanted to keep that package
  6. CRASH

On all the other tries Discover would always change the number of available upgrades to 0 after answering "No" and would spend a few seconds *thinking* in the "Please wait…" and "Upgrading…" states before showing all upgrades again.
Actually I managed to crash it again after repeating the above procedure a couple of times. Here's the new backtrace:

Thread 1 (Thread 0x7f9efea398c0 (LWP 4236)):
[KCrash Handler]
#6  0x00007f9efbefdfdb in QObjectData::dynamicMetaObject() const () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9efbf0806f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9efe39c2b3 in QQuickItem::~QQuickItem() (this=0x55944c6bb8c0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#9  0x00007f9efe3b7776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55944c6bb8c0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#10 0x00007f9efe3b7776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55944c6bb8c0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#11 0x00007f9efbefee11 in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f9efbf0819f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f9efe39c2b3 in QQuickItem::~QQuickItem() (this=0x55944c537c10, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#14 0x00007f9efe3b7006 in QQmlPrivate::QQmlElement<QQuickFocusScope>::~QQmlElement() (this=0x55944c537c10, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#15 0x00007f9efe3b7006 in QQmlPrivate::QQmlElement<QQuickFocusScope>::~QQmlElement() (this=0x55944c537c10, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#16 0x00007f9efbefee11 in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f9efbf0819f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f9efe39c2b3 in QQuickItem::~QQuickItem() (this=0x55944bfd3340, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#19 0x00007f9ee1f4530a in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#20 0x00007f9ee1f421f4 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#21 0x00007f9efbefee11 in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f9efbf0819f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f9efe39c2b3 in QQuickItem::~QQuickItem() (this=0x55944bcb6bc0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#24 0x00007f9efe3b7776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55944bcb6bc0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#25 0x00007f9efe3b7776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55944bcb6bc0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#26 0x00007f9efbf014d0 in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f9efe39775b in QQuickItem::event(QEvent*) (this=0x55944bcb6bc0, ev=0x55944ccdc710) at items/qquickitem.cpp:7659
#28 0x00007f9efce57b8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f9efce5f341 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f9efbed49e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f9efbed716d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f9efbf28c43 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f9ef6aa87f7 in g_main_dispatch (context=0x7f9ee80016f0) at ././glib/gmain.c:3203
#34 0x00007f9ef6aa87f7 in g_main_context_dispatch (context=context@entry=0x7f9ee80016f0) at ././glib/gmain.c:3856
#35 0x00007f9ef6aa8a60 in g_main_context_iterate (context=context@entry=0x7f9ee80016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#36 0x00007f9ef6aa8b0c in g_main_context_iteration (context=0x7f9ee80016f0, may_block=1) at ././glib/gmain.c:3990
#37 0x00007f9efbf2904f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f9efbed29ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f9efbedb13c in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x0000559448053c02 in  ()
#41 0x00007f9efb2462b1 in __libc_start_main (main=0x559448053520, argc=3, argv=0x7ffc86fc1038, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc86fc1028) at ../csu/libc-start.c:291
#42 0x0000559448053d2a in _start ()

The crash can be reproduced sometimes.

-- 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 0x7f966189d8c0 (LWP 3719))]

Thread 14 (Thread 0x7f9621145700 (LWP 3746)):
#0  0x00007ffe85368bd9 in clock_gettime ()
#1  0x00007f965e17b856 in __GI___clock_gettime (clock_id=1, tp=0x7f9621144a70) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f965ec0a091 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f965ed86ce9 in QTimerInfoList::updateCurrentTime() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f965ed87295 in QTimerInfoList::timerWait(timespec&) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f965ed888d4 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9659907edd in g_main_context_prepare (context=context@entry=0x7f9600000990, priority=priority@entry=0x7f9621144bc0) at ././glib/gmain.c:3501
#7  0x00007f965990891b in g_main_context_iterate (context=context@entry=0x7f9600000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#8  0x00007f9659908b0c in g_main_context_iteration (context=0x7f9600000990, may_block=1) at ././glib/gmain.c:3990
#9  0x00007f965ed8906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f965ed329ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f965eb600f3 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f965eb64da8 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f965ba75424 in start_thread (arg=0x7f9621145700) at pthread_create.c:333
#14 0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f9622664700 (LWP 3735)):
#0  0x00007f965e16554d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f96599089f6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f96140010c0, timeout=<optimized out>, context=0x56318060c2f0) at ././glib/gmain.c:4228
#2  0x00007f96599089f6 in g_main_context_iterate (context=0x56318060c2f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f9659908d82 in g_main_loop_run (loop=0x56318060c280) at ././glib/gmain.c:4125
#4  0x00007f96288b14f6 in gdbus_shared_thread_func (user_data=0x56318060c2c0) at ././gio/gdbusprivate.c:247
#5  0x00007f9659930345 in g_thread_proxy (data=0x5631805f7cf0) at ././glib/gthread.c:784
#6  0x00007f965ba75424 in start_thread (arg=0x7f9622664700) at pthread_create.c:333
#7  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f9622e65700 (LWP 3734)):
#0  0x00007f965e16554d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f96599089f6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f961c0008c0, timeout=<optimized out>, context=0x56318060ba70) at ././glib/gmain.c:4228
#2  0x00007f96599089f6 in g_main_context_iterate (context=context@entry=0x56318060ba70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f9659908b0c in g_main_context_iteration (context=0x56318060ba70, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f9659908b51 in glib_worker_main (data=<optimized out>) at ././glib/gmain.c:5783
#5  0x00007f9659930345 in g_thread_proxy (data=0x5631805f7ca0) at ././glib/gthread.c:784
#6  0x00007f965ba75424 in start_thread (arg=0x7f9622e65700) at pthread_create.c:333
#7  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f96338c4700 (LWP 3730)):
#0  0x00007f965994e004 in g_mutex_unlock (mutex=0x7f9624000990) at ././glib/gthread-posix.c:1348
#1  0x00007f965990890e in g_main_context_iterate (context=context@entry=0x7f9624000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3907
#2  0x00007f9659908b0c in g_main_context_iteration (context=0x7f9624000990, may_block=1) at ././glib/gmain.c:3990
#3  0x00007f965ed8906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f965ed329ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f965eb600f3 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f965eb64da8 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f965ba75424 in start_thread (arg=0x7f96338c4700) at pthread_create.c:333
#8  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f96340c5700 (LWP 3729)):
#0  0x00007f965994dfe9 in g_mutex_lock (mutex=mutex@entry=0x7f962c000990) at ././glib/gthread-posix.c:1336
#1  0x00007f96599089db in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f962c0312f0, timeout=<optimized out>, context=0x7f962c000990) at ././glib/gmain.c:4223
#2  0x00007f96599089db in g_main_context_iterate (context=context@entry=0x7f962c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f9659908b0c in g_main_context_iteration (context=0x7f962c000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f965ed8906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f965ed329ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f965eb600f3 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f966116d406 in QQuickPixmapReader::run() (this=0x5631801dfa00) at util/qquickpixmapcache.cpp:822
#8  0x00007f965eb64da8 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f965ba75424 in start_thread (arg=0x7f96340c5700) at pthread_create.c:333
#10 0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f9634bdc700 (LWP 3727)):
#0  0x00007f965ba7b14f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f963f64f25b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f963f64f0b7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f965ba75424 in start_thread (arg=0x7f9634bdc700) at pthread_create.c:333
#4  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f96353dd700 (LWP 3726)):
#0  0x00007f965ba7b14f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f963f64f25b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f963f64f0b7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f965ba75424 in start_thread (arg=0x7f96353dd700) at pthread_create.c:333
#4  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f963cd54700 (LWP 3725)):
#0  0x00007f965ba7b14f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f963f64f25b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f963f64f0b7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f965ba75424 in start_thread (arg=0x7f963cd54700) at pthread_create.c:333
#4  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f963d555700 (LWP 3724)):
#0  0x00007f965ba7b14f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f963f64f25b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f963f64f0b7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f965ba75424 in start_thread (arg=0x7f963d555700) at pthread_create.c:333
#4  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f963df8d700 (LWP 3723)):
#0  0x00007f965ba7b14f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f963f64f25b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f963f64f0b7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f965ba75424 in start_thread (arg=0x7f963df8d700) at pthread_create.c:333
#4  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f9645e1d700 (LWP 3722)):
#0  0x00007f965e16554d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f96599089f6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f9638002e70, timeout=<optimized out>, context=0x7f9638000990) at ././glib/gmain.c:4228
#2  0x00007f96599089f6 in g_main_context_iterate (context=context@entry=0x7f9638000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f9659908b0c in g_main_context_iteration (context=0x7f9638000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f965ed8906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f965ed329ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f965eb600f3 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f965f4eb6a5 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f965eb64da8 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f965ba75424 in start_thread (arg=0x7f9645e1d700) at pthread_create.c:333
#10 0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f96474cd700 (LWP 3721)):
#0  0x00007f965e1615c1 in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f965994cc40 in read (__nbytes=16, __buf=0x7f96474ccab0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007f965994cc40 in g_wakeup_acknowledge (wakeup=0x56317fd892b0) at ././glib/gwakeup.c:210
#3  0x00007f96599084be in g_main_context_check (context=context@entry=0x7f9640000990, max_priority=2147483647, fds=fds@entry=0x7f96400231a0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#4  0x00007f9659908994 in g_main_context_iterate (context=context@entry=0x7f9640000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#5  0x00007f9659908b0c in g_main_context_iteration (context=0x7f9640000990, may_block=1) at ././glib/gmain.c:3990
#6  0x00007f965ed8906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f965ed329ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f965eb600f3 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f96619db6d5 in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f965eb64da8 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f965ba75424 in start_thread (arg=0x7f96474cd700) at pthread_create.c:333
#12 0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f964fdf5700 (LWP 3720)):
#0  0x00007f965e16554d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f965949a150 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f965949bee9 in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f9652379b69 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f965eb64da8 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f965ba75424 in start_thread (arg=0x7f964fdf5700) at pthread_create.c:333
#6  0x00007f965e16e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f966189d8c0 (LWP 3719)):
[KCrash Handler]
#6  0x00007f965f45776c in QQmlData::destroyed(QObject*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f965ed67f0e in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f96611fc2b3 in QQuickItem::~QQuickItem() (this=0x5631803a2640, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#9  0x00007f9661217b16 in QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement() (this=0x5631803a2640, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#10 0x00007f9661217b16 in QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement() (this=0x5631803a2640, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#11 0x00007f965ed5ee11 in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f965ed6819f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f96611fc2b3 in QQuickItem::~QQuickItem() (this=0x5631831bb470, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#14 0x00007f9661217776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x5631831bb470, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#15 0x00007f9661217776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x5631831bb470, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#16 0x00007f965ed5ee11 in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f965ed6819f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f96611fc2b3 in QQuickItem::~QQuickItem() (this=0x563182909430, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#19 0x00007f9661217776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x563182909430, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#20 0x00007f9661217776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x563182909430, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#21 0x00007f965ed5ee11 in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f965ed6819f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f96611fc2b3 in QQuickItem::~QQuickItem() (this=0x563182e6f260, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#24 0x00007f9661217006 in QQmlPrivate::QQmlElement<QQuickFocusScope>::~QQmlElement() (this=0x563182e6f260, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#25 0x00007f9661217006 in QQmlPrivate::QQmlElement<QQuickFocusScope>::~QQmlElement() (this=0x563182e6f260, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#26 0x00007f965ed5ee11 in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f965ed6819f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f96611fc2b3 in QQuickItem::~QQuickItem() (this=0x563181429670, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#29 0x00007f9644d9d30a in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#30 0x00007f9644d9a1f4 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#31 0x00007f965ed5ee11 in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f965ed6819f in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f96611fc2b3 in QQuickItem::~QQuickItem() (this=0x563180119020, __in_chrg=<optimized out>) at items/qquickitem.cpp:2342
#34 0x00007f9661217776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x563180119020, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#35 0x00007f9661217776 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x563180119020, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:104
#36 0x00007f965ed614d0 in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f96611f775b in QQuickItem::event(QEvent*) (this=0x563180119020, ev=0x563182750f20) at items/qquickitem.cpp:7659
#38 0x00007f965fcb7b8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007f965fcbf341 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#40 0x00007f965ed349e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f965ed3716d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007f965ed88c43 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f96599087f7 in g_main_dispatch (context=0x7f96480016f0) at ././glib/gmain.c:3203
#44 0x00007f96599087f7 in g_main_context_dispatch (context=context@entry=0x7f96480016f0) at ././glib/gmain.c:3856
#45 0x00007f9659908a60 in g_main_context_iterate (context=context@entry=0x7f96480016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#46 0x00007f9659908b0c in g_main_context_iteration (context=0x7f96480016f0, may_block=1) at ././glib/gmain.c:3990
#47 0x00007f965ed8904f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f965ed329ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f965ed3b13c in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x000056317dc7ac02 in  ()
#51 0x00007f965e0a62b1 in __libc_start_main (main=0x56317dc7a520, argc=3, argv=0x7ffe85238948, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe85238938) at ../csu/libc-start.c:291
#52 0x000056317dc7ad2a in _start ()

Reported using DrKonqi
Comment 1 Erin of Yukis 2017-02-28 00:43:53 UTC 
It seems this has been fixed by the most recent upgrade using the new "dialog" overlay thing!