Bug 372118

Summary: plasmashell crash on startup
Product: [Plasma] plasmashell Reporter: Tim Small <tim>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED UPSTREAM    
Severity: crash CC: bshah, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.8.2   
Target Milestone: 1.0   
Platform: Debian unstable   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Tim Small 2016-11-05 20:27:05 UTC 
Application: plasmashell (5.8.2)

Qt Version: 5.7.1
Frameworks Version: 5.27.0
Operating System: Linux 4.8.0-1-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

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

Crash during login after package upgrade on Debian sid.  The same problem recurrs when manually starting plasmashell after startup.

- Unusual behavior I noticed:

Debug messages from starting manually on console:

QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-tim'
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickListView_QML_99(0x29f6f80) is not a function
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:71: TypeError: Cannot read property 'atYBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:90: TypeError: Cannot read property 'atYEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:108: TypeError: Cannot read property 'atXBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:126: TypeError: Cannot read property 'atXEnd' of null
No metadata file in the package, expected it at: "/usr/share/wallpapers/Castilla_Sky/contents/images/"
No metadata file in the package, expected it at: "/usr/share/wallpapers/Castilla_Sky/contents/images/"
No metadata file in the package, expected it at: "/usr/share/wallpapers/Castilla_Sky/contents/images/"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Panel.qml:83: TypeError: Cannot read property 'Layout' of null
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickRow(0x46d46b0) is not a function
file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/ToolTipDelegate.qml:131: TypeError: Type error
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:71: TypeError: Cannot read property 'atYBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:90: TypeError: Cannot read property 'atYEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:108: TypeError: Cannot read property 'atXBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:126: TypeError: Cannot read property 'atXEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickRow(0x4baaa50) is not a function
file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/ToolTipDelegate.qml:131: TypeError: Type error
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:71: TypeError: Cannot read property 'atYBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:90: TypeError: Cannot read property 'atYEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:108: TypeError: Cannot read property 'atXBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:126: TypeError: Cannot read property 'atXEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Panel.qml:83: TypeError: Cannot read property 'Layout' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickFlickable(0x4675b40) is not a function
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickItem(0x4f93590) is not a function
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Cannot call method 'hasOwnProperty' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/ScrollArea.qml:46: TypeError: Cannot read property 'interactive' of null
"file:///usr/share/plasma/plasmoids/org.kde.plasma.volume/contents/ui/main.qml" 
 "Error loading QML file.\n"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickFlickable(0x5463350) is not a function
Notifications service registered
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickTextEdit(0x54b4740) is not a function
QObject::connect: Cannot connect (null)::notificationTimeout() to NotificationsHelper::onPopupClosed()
QObject::connect: invalid null parameter
QObject::connect: invalid null parameter
KCrash: Attempting to start /usr/bin/plasmashell from kdeinit
Warning: connect() failed: : No such file or directory
KCrash: Attempting to start /usr/bin/plasmashell directly
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = plasmashell path = /usr/bin pid = 17410
KCrash: Arguments: /usr/bin/plasmashell 
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi from kdeinit
Warning: connect() failed: : No such file or directory
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi directly
found lsb_release
Using /proc to determine executable path
Executable is: "/usr/bin/plasmashell"
Executable exists: true
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 19 and type 'Read', disabling...
QSocketNotifier: Invalid socket 9 and type 'Read', disabling...
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-tim'
Enabling drkonqi crash catching
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickListView_QML_99(0x10042d0) is not a function
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:71: TypeError: Cannot read property 'atYBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:90: TypeError: Cannot read property 'atYEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:108: TypeError: Cannot read property 'atXBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:126: TypeError: Cannot read property 'atXEnd' of null
No metadata file in the package, expected it at: "/usr/share/wallpapers/Castilla_Sky/contents/images/"
No metadata file in the package, expected it at: "/usr/share/wallpapers/Castilla_Sky/contents/images/"
No metadata file in the package, expected it at: "/usr/share/wallpapers/Castilla_Sky/contents/images/"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Panel.qml:83: TypeError: Cannot read property 'Layout' of null
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickRow(0x2d033b0) is not a function
file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/ToolTipDelegate.qml:131: TypeError: Type error
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:71: TypeError: Cannot read property 'atYBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:90: TypeError: Cannot read property 'atYEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:108: TypeError: Cannot read property 'atXBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:126: TypeError: Cannot read property 'atXEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickRow(0x31d96d0) is not a function
file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/ToolTipDelegate.qml:131: TypeError: Type error
Sending SIGSTOP to process
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:71: TypeError: Cannot read property 'atYBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:90: TypeError: Cannot read property 'atYEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:108: TypeError: Cannot read property 'atXBeginning' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:126: TypeError: Cannot read property 'atXEnd' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property of null
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Panel.qml:83: TypeError: Cannot read property 'Layout' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickFlickable(0x318dfe0) is not a function
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickItem(0x358fd80) is not a function
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Cannot call method 'hasOwnProperty' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/ScrollArea.qml:46: TypeError: Cannot read property 'interactive' of null
"file:///usr/share/plasma/plasmoids/org.kde.plasma.volume/contents/ui/main.qml" 
 "Error loading QML file.\n"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickFlickable(0x36dabe0) is not a function
Notifications service registered
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/ScrollView.qml:198: TypeError: Property 'hasOwnProperty' of object QQuickTextEdit(0x3724c80) is not a function
QObject::connect: Cannot connect (null)::notificationTimeout() to NotificationsHelper::onPopupClosed()
QObject::connect: invalid null parameter
QObject::connect: invalid null parameter
QSystemTrayIcon::setVisible: No Icon set

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6a98849940 (LWP 25054))]

Thread 6 (Thread 0x7f69fafc3700 (LWP 25099)):
#0  0x00007f6aa604156d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6aa1be29d6 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f69f40013c0, timeout=<optimized out>, context=0x7f69f4000990) at ././glib/gmain.c:4228
#2  0x00007f6aa1be29d6 in g_main_context_iterate (context=context@entry=0x7f69f4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f6aa1be2aec in g_main_context_iteration (context=0x7f69f4000990, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f6aa695f73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f69f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6aa69090ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f69fafc2c10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f6aa672b0e3 in QThread::exec() (this=this@entry=0x11d9f60) at thread/qthread.cpp:507
#7  0x00007f6aa9958c16 in QQuickPixmapReader::run() (this=0x11d9f60) at util/qquickpixmapcache.cpp:822
#8  0x00007f6aa672fd98 in QThreadPrivate::start(void*) (arg=0x11d9f60) at thread/qthread_unix.cpp:368
#9  0x00007f6aa5844464 in start_thread (arg=0x7f69fafc3700) at pthread_create.c:333
#10 0x00007f6aa604a9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f6a8485d700 (LWP 25091)):
#0  0x00007f6aa584a18f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6aab1b92c4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f6aab1b9309 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f6aa5844464 in start_thread (arg=0x7f6a8485d700) at pthread_create.c:333
#4  0x00007f6aa604a9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f6a86594700 (LWP 25062)):
#0  0x00007f6aa604156d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6aa1be29d6 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f6a80003070, timeout=<optimized out>, context=0x7f6a80000990) at ././glib/gmain.c:4228
#2  0x00007f6aa1be29d6 in g_main_context_iterate (context=context@entry=0x7f6a80000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f6aa1be2aec in g_main_context_iteration (context=0x7f6a80000990, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f6aa695f73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f6a800008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6aa69090ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6a86593c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f6aa672b0e3 in QThread::exec() (this=this@entry=0x1121970) at thread/qthread.cpp:507
#7  0x00007f6aa8fcd6d5 in QQmlThreadPrivate::run() (this=0x1121970) at qml/ftw/qqmlthread.cpp:147
#8  0x00007f6aa672fd98 in QThreadPrivate::start(void*) (arg=0x1121970) at thread/qthread_unix.cpp:368
#9  0x00007f6aa5844464 in start_thread (arg=0x7f6a86594700) at pthread_create.c:333
#10 0x00007f6aa604a9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f6a94810700 (LWP 25058)):
#0  0x00007f6aa1c28029 in g_mutex_lock (mutex=mutex@entry=0x7f6a8c000990) at ././glib/gthread-posix.c:1336
#1  0x00007f6aa1be2992 in g_main_context_iterate (context=context@entry=0x7f6a8c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3933
#2  0x00007f6aa1be2aec in g_main_context_iteration (context=0x7f6a8c000990, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#3  0x00007f6aa695f73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f6a8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f6aa69090ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6a9480fc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f6aa672b0e3 in QThread::exec() (this=this@entry=0x10aa5c0) at thread/qthread.cpp:507
#6  0x00007f6aa8fcd6d5 in QQmlThreadPrivate::run() (this=0x10aa5c0) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f6aa672fd98 in QThreadPrivate::start(void*) (arg=0x10aa5c0) at thread/qthread_unix.cpp:368
#8  0x00007f6aa5844464 in start_thread (arg=0x7f6a94810700) at pthread_create.c:333
#9  0x00007f6aa604a9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f6a95845700 (LWP 25056)):
#0  0x00007f6aa604156d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6aa1be29d6 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f6a88014310, timeout=<optimized out>, context=0x7f6a88000990) at ././glib/gmain.c:4228
#2  0x00007f6aa1be29d6 in g_main_context_iterate (context=context@entry=0x7f6a88000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f6aa1be2aec in g_main_context_iteration (context=0x7f6a88000990, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f6aa695f73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f6a880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6aa69090ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6a95844c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f6aa672b0e3 in QThread::exec() (this=this@entry=0x7f6aab8efd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:507
#7  0x00007f6aab87a6d5 in QDBusConnectionManager::run() (this=0x7f6aab8efd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#8  0x00007f6aa672fd98 in QThreadPrivate::start(void*) (arg=0x7f6aab8efd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:368
#9  0x00007f6aa5844464 in start_thread (arg=0x7f6a95845700) at pthread_create.c:333
#10 0x00007f6aa604a9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f6a98849940 (LWP 25054)):
[KCrash Handler]
#4  0x00007f6aa693ef37 in QObject::setProperty(char const*, QVariant const&) (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:141
#5  0x00007f6aa693ef37 in QObject::setProperty(char const*, QVariant const&) (p=...) at global/qglobal.h:980
#6  0x00007f6aa693ef37 in QObject::setProperty(char const*, QVariant const&) (this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:116
#7  0x00007f6aa693ef37 in QObject::setProperty(char const*, QVariant const&) (this=0x0, name=name@entry=0x7f69e546b468 "initialPositionSet", value=...) at kernel/qobject.cpp:3848
#8  0x00007f69e54653ad in NotificationsHelper::addNotificationPopup(QObject*) (this=0x3eb0bf0, win=<optimized out>) at ./applets/notifications/plugin/notificationshelper.cpp:81
#9  0x00007f69e546b044 in NotificationsHelper::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=_o@entry=0x3eb0bf0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=6, _a=_a@entry=0x7ffe1c9624c0) at ./obj-x86_64-linux-gnu/applets/notifications/plugin/moc_notificationshelper.cpp:155
#10 0x00007f69e546b2c8 in NotificationsHelper::qt_metacall(QMetaObject::Call, int, void**) (this=0x3eb0bf0, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0x7ffe1c9624c0) at ./obj-x86_64-linux-gnu/applets/notifications/plugin/moc_notificationshelper.cpp:220
#11 0x00007f6aa8f86519 in QQmlObjectOrGadget::metacall(QMetaObject::Call, int, void**) const (this=this@entry=0x7ffe1c962860, type=type@entry=QMetaObject::InvokeMetaMethod, index=<optimized out>, index@entry=11, argv=<optimized out>) at qml/qqmlpropertycache.cpp:1547
#12 0x00007f6aa8f150f4 in CallMethod(QQmlObjectOrGadget const&, int, int, int, int*, QV4::ExecutionEngine*, QV4::CallData*) (object=..., index=<optimized out>, returnType=returnType@entry=43, argCount=<optimized out>, argTypes=<optimized out>, engine=engine@entry=0x115c710, callArgs=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:1137
#13 0x00007f6aa8f161c8 in CallPrecise(QQmlObjectOrGadget const&, QQmlPropertyData const&, QV4::ExecutionEngine*, QV4::CallData*) (object=..., data=..., engine=engine@entry=0x115c710, callArgs=callArgs@entry=0x7f6a85595558) at jsruntime/qv4qobjectwrapper.cpp:1388
#14 0x00007f6aa8f16a65 in QV4::QObjectMethod::callInternal(QV4::CallData*) const (this=<optimized out>, callData=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:1871
#15 0x00007f6aa8f2c1c1 in QV4::Runtime::callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) (d=0x7f6a85595558, this=<optimized out>) at jsruntime/qv4object_p.h:332
#16 0x00007f6aa8f2c1c1 in QV4::Runtime::callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) (engine=0x115c710, nameIndex=<optimized out>, callData=0x7f6a85595558) at jsruntime/qv4runtime.cpp:1030
#17 0x00007f69e5abe1d2 in  ()
#18 0x0000000000000001 in  ()
#19 0x00007f6aab7544f8 in  ()
#20 0x00007ffe1c962a30 in  ()
#21 0xffffffffffffffff in #22 0x00007f6aa2ddbc70 in _DYNAMIC () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#23 0x00007f6aab73006f in _dl_map_object_deps (map=<optimized out>, preloads=<optimized out>, npreloads=<optimized out>, trace_mode=<optimized out>, open_mode=<optimized out>) at dl-deps.c:254
#24 0x00007f6aa8ec47fb in QV4::SimpleScriptFunction::call(QV4::Managed const*, QV4::CallData*) (that=<optimized out>, callData=<optimized out>) at jsruntime/qv4functionobject.cpp:582
#25 0x00007f6aa8fb1f87 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) (d=0x7f6a855954c8, this=<optimized out>) at ../../include/QtQml/5.7.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:332
#26 0x00007f6aa8fb1f87 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) (this=this@entry=0x3ead6e0, callData=callData@entry=0x7f6a855954c8, isUndefined=isUndefined@entry=0x0) at qml/qqmljavascriptexpression.cpp:196
#27 0x00007f6aa8f58466 in QQmlBoundSignalExpression::evaluate(void**) (this=<optimized out>, a=<optimized out>) at qml/qqmlboundsignal.cpp:247
#28 0x00007f6aa8f595fb in QQmlBoundSignal_callback(QQmlNotifierEndpoint*, void**) (e=0x3bf8cc0, a=0x0) at qml/qqmlboundsignal.cpp:379
#29 0x00007f6aa8f8f984 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:100
#30 0x00007f6aa8f3a67c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) (object=0x3bfadf0, index=3, a=0x0) at qml/qqmlengine.cpp:779
#31 0x00007f6aa69373f4 in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x3bfadf0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3618
#32 0x00007f6aa69375f7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x3bfadf0, m=m@entry=0x7f6aa90edee0 <QQmlComponentAttached::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3602
#33 0x00007f6aa9015d10 in QQmlComponentAttached::completed() (this=this@entry=0x3bfadf0) at .moc/moc_qqmlcomponentattached_p.cpp:137
#34 0x00007f6aa8fc3ea8 in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) (this=0x3aed820, interrupt=...) at qml/qqmlobjectcreator.cpp:1269
#35 0x00007f6aa8f52572 in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) (this=this@entry=0x3aed750, i=...) at qml/qqmlincubator.cpp:354
#36 0x00007f6aa8f53038 in QQmlIncubatorPrivate::forceCompletion(QQmlInstantiationInterrupt&) (this=0x3aed750, i=...) at qml/qqmlincubator.cpp:275
#37 0x00007f6aa8f53014 in QQmlIncubatorPrivate::forceCompletion(QQmlInstantiationInterrupt&) (this=0x3a62830, i=...) at qml/qqmlincubator.cpp:273
#38 0x00007f6aa8f5309c in QQmlIncubator::forceCompletion() (this=<optimized out>) at qml/qqmlincubator.cpp:606
#39 0x00007f6aa9c47408 in KDeclarative::QmlObject::completeInitialization(QHash<QString, QVariant> const&) () at /usr/lib/x86_64-linux-gnu/libKF5Declarative.so.5
#40 0x00007f6aab2e5809 in PlasmaQuick::AppletQuickItem::init() () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#41 0x00007f6a865aa094 in AppletInterface::init() (this=0x40f57e0) at ./src/scriptengines/qml/plasmoid/appletinterface.cpp:139
#42 0x00007f6aab2e68e8 in PlasmaQuick::AppletQuickItem::itemChange(QQuickItem::ItemChange, QQuickItem::ItemChangeData const&) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#43 0x00007f6aa99e0545 in QQuickItemPrivate::itemChange(QQuickItem::ItemChange, QQuickItem::ItemChangeData const&) (this=this@entry=0x3a625c0, change=change@entry=QQuickItem::ItemSceneChange, data=...) at items/qquickitem.cpp:5990
#44 0x00007f6aa99e56be in QQuickItemPrivate::refWindow(QQuickWindow*) (this=this@entry=0x3a625c0, c=c@entry=0x11609c0) at items/qquickitem.cpp:2991
#45 0x00007f6aa99e6b94 in QQuickItem::setParentItem(QQuickItem*) (this=0x40f57e0, parentItem=0x160bab0) at items/qquickitem.cpp:2712
#46 0x00007f6aa99e98c1 in QQuickItem::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=_o@entry=0x40f57e0, _c=_c@entry=QMetaObject::WriteProperty, _id=_id@entry=0, _a=_a@entry=0x7ffe1c9651a0) at .moc/moc_qquickitem.cpp:922
#47 0x00007f6aa99e9efb in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) (this=0x40f57e0, _c=QMetaObject::WriteProperty, _id=0, _a=0x7ffe1c9651a0) at .moc/moc_qquickitem.cpp:998
#48 0x00007f6aab2e6965 in PlasmaQuick::AppletQuickItem::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#49 0x00007f6a865aad95 in AppletInterface::qt_metacall(QMetaObject::Call, int, void**) (this=0x40f57e0, _c=QMetaObject::WriteProperty, _id=<optimized out>, _a=0x7ffe1c9651a0) at ./obj-x86_64-linux-gnu/src/scriptengines/qml/moc_appletinterface.cpp:661
#50 0x00007f6aa6919427 in QMetaProperty::write(QObject*, QVariant const&) const (this=this@entry=0x7ffe1c965240, object=object@entry=0x40f57e0, value=...) at kernel/qmetaobject.cpp:3115
#51 0x00007f6aa693efbf in QObject::setProperty(char const*, QVariant const&) (this=this@entry=0x40f57e0, name=name@entry=0x7f6a865c0b38 "parent", value=...) at kernel/qobject.cpp:3887
#52 0x00007f6a865af63e in ContainmentInterface::appletAddedForward(Plasma::Applet*) (this=0x160bab0, applet=<optimized out>) at ./src/scriptengines/qml/plasmoid/containmentinterface.cpp:773
#53 0x00007f6aa693704e in QMetaObject::activate(QObject*, int, int, void**) (a=0x7ffe1c965450, r=0x160bab0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:101
#54 0x00007f6aa693704e in QMetaObject::activate(QObject*, int, int, void**) (sender=0x13618f0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3723
#55 0x00007f6aa9e8796f in Plasma::Containment::appletAdded(Plasma::Applet*) () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#56 0x00007f6aa9e897ba in Plasma::Containment::addApplet(Plasma::Applet*) () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#57 0x00007f6a84c77c33 in SystemTray::newTask(QString const&) (this=this@entry=0x13618f0, task=...) at ./applets/systemtray/systemtray.cpp:146
#58 0x00007f6a84c7a81c in SystemTray::restorePlasmoids() (this=this@entry=0x13618f0) at ./applets/systemtray/systemtray.cpp:449
#59 0x00007f6a84c7cb98 in SystemTray::setAllowedPlasmoids(QStringList const&) (this=this@entry=0x13618f0, allowed=...) at ./applets/systemtray/systemtray.cpp:494
#60 0x00007f6a84c7fc9a in SystemTray::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=_o@entry=0x13618f0, _c=_c@entry=QMetaObject::WriteProperty, _id=_id@entry=1, _a=_a@entry=0x7ffe1c9658f0) at ./obj-x86_64-linux-gnu/applets/systemtray/moc_systemtray.cpp:210
#61 0x00007f6a84c801db in SystemTray::qt_metacall(QMetaObject::Call, int, void**) (this=0x13618f0, _c=QMetaObject::WriteProperty, _id=1, _a=0x7ffe1c9658f0) at ./obj-x86_64-linux-gnu/applets/systemtray/moc_systemtray.cpp:254
#62 0x00007f6aa8f4afb2 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) (object=object@entry=0x13618f0, property=..., value=..., context=0x3a74d80, flags=...) at qml/qqmlproperty.cpp:1259
#63 0x00007f6aa8f17ea2 in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) (engine=engine@entry=0x115c710, object=object@entry=0x13618f0, property=0x3abc670, value=...) at jsruntime/qv4qobjectwrapper.cpp:544
#64 0x00007f6aa8f184b0 in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) (engine=0x115c710, qmlContext=<optimized out>, object=0x13618f0, name=<optimized out>, revisionMode=QV4::QObjectWrapper::IgnoreRevision, value=...) at jsruntime/qv4qobjectwrapper.cpp:431
#65 0x00007f6aa8f185e2 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) (m=0x7f6a855954b8, name=0x7f6a855954b0, value=...) at jsruntime/qv4qobjectwrapper.cpp:704
#66 0x00007f6aa8f28a16 in QV4::Runtime::setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) (v=..., name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:310
#67 0x00007f6aa8f28a16 in QV4::Runtime::setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) (engine=0x115c710, object=..., nameIndex=<optimized out>, value=...) at jsruntime/qv4runtime.cpp:603
#68 0x00007f69e87d8107 in  ()
#69 0x0000000000000000 in  ()

Reported using DrKonqi
Comment 1 Christoph Feck 2016-11-06 23:08:10 UTC 
Related to/duplicate of https://bugreports.qt.io/browse/QTBUG-56932
Comment 2 Tim Small 2016-11-07 08:27:24 UTC 
Confirmed dup of the QT bug listed below.  Fixed with debian qtdeclarative-opensource-src 5.7.1~20161021-5 fix 6th Nov 2016.