Bug 356402

Summary: Crash when unloading notifications from systray while there is a notification on screen
Product: [Plasma] plasmashell Reporter: opensuse.lietuviu.kalba
Component: NotificationsAssignee: Martin Klapetek <mklapetek>
Status: RESOLVED FIXED    
Severity: crash CC: bshah, heri+kde, opensuse.lietuviu.kalba, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.5.0   
Target Milestone: 1.0   
Platform: openSUSE   
OS: Linux   
Latest Commit: http://commits.kde.org/plasma-workspace/2b59ccd531dcdb7d86577cee1d987f95a9db9bf0 Version Fixed/Implemented In: 5.5.1
Sentry Crash Report:
Attachments: New crash information added by DrKonqi

Description opensuse.lietuviu.kalba 2015-12-08 21:52:52 UTC 
Application: plasmashell (5.5.0)

Qt Version: 5.5.0
Operating System: Linux 4.1.12-1-default x86_64
Distribution (Platform): openSUSE RPMs

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

I see empty spaces in system tray. As suggested in https://bugs.kde.org/show_bug.cgi?id=352055 and http://lists.opensuse.org/opensuse-factory/2015-12/msg00133.html , I started to deselecting items from system tray. Plasma restarted.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe15ee747c0 (LWP 1727))]

Thread 9 (Thread 0x7fe148909700 (LWP 1731)):
#0  0x00007fe1583a0c1d in poll () from /lib64/libc.so.6
#1  0x00007fe15d2c7422 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fe15d2c900f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fe14aa59c29 in QXcbEventReader::run (this=0xb50880) at qxcbconnection.cpp:1214
#4  0x00007fe158a9755f in QThreadPrivate::start (arg=0xb50880) at thread/qthread_unix.cpp:331
#5  0x00007fe157baa0a4 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fe1583a904d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fe14615b700 (LWP 1734)):
#0  QMutex::lock (this=this@entry=0xc1f7d8) at thread/qmutex.cpp:210
#1  0x00007fe158cc9555 in QMutexLocker (m=0xc1f7d8, this=<synthetic pointer>) at ../../src/corelib/thread/qmutex.h:128
#2  canWaitLocked (this=0xc1f7b0) at ../../src/corelib/thread/qthread_p.h:249
#3  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7fe1380012d0) at kernel/qeventdispatcher_glib.cpp:254
#4  postEventSourceCheck (source=0x7fe1380012d0) at kernel/qeventdispatcher_glib.cpp:264
#5  0x00007fe154a818f1 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#6  0x00007fe154a81df8 in ?? () from /usr/lib64/libglib-2.0.so.0
#7  0x00007fe154a81f7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#8  0x00007fe158cc8a5b in QEventDispatcherGlib::processEvents (this=0x7fe1380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#9  0x00007fe158c6fa63 in QEventLoop::exec (this=this@entry=0x7fe14615adf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#10 0x00007fe158a9284a in QThread::exec (this=this@entry=0xc1f600) at thread/qthread.cpp:503
#11 0x00007fe15bd7b5f8 in QQmlThreadPrivate::run (this=0xc1f600) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#12 0x00007fe158a9755f in QThreadPrivate::start (arg=0xc1f600) at thread/qthread_unix.cpp:331
#13 0x00007fe157baa0a4 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fe1583a904d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fe12ebae700 (LWP 1760)):
#0  0x00007fe154ac3d14 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fe154a81d73 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe154a81f7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe158cc8a5b in QEventDispatcherGlib::processEvents (this=0x7fe1280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fe158c6fa63 in QEventLoop::exec (this=this@entry=0x7fe12ebaddf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fe158a9284a in QThread::exec (this=this@entry=0xde7590) at thread/qthread.cpp:503
#6  0x00007fe15bd7b5f8 in QQmlThreadPrivate::run (this=0xde7590) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007fe158a9755f in QThreadPrivate::start (arg=0xde7590) at thread/qthread_unix.cpp:331
#8  0x00007fe157baa0a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fe1583a904d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fe12d3b3700 (LWP 1761)):
#0  0x00007fe157bae05f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe15e54b7eb in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007fe15e54b819 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007fe157baa0a4 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fe1583a904d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fe0a7fff700 (LWP 1762)):
#0  0x00007fe154ac3cf9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fe154a80ee0 in g_main_context_acquire () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe154a81d25 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe154a81f7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fe158cc8a5b in QEventDispatcherGlib::processEvents (this=0x7fe0a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fe158c6fa63 in QEventLoop::exec (this=this@entry=0x7fe0a7ffedf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fe158a9284a in QThread::exec (this=this@entry=0xf75d30) at thread/qthread.cpp:503
#7  0x00007fe15bd7b5f8 in QQmlThreadPrivate::run (this=0xf75d30) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007fe158a9755f in QThreadPrivate::start (arg=0xf75d30) at thread/qthread_unix.cpp:331
#9  0x00007fe157baa0a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe1583a904d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fe09fb49700 (LWP 1772)):
#0  0x00007fe158a90b8a in testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x148f3e8: 0x1) at ../../src/corelib/arch/qatomic_x86.h:259
#1  testAndSetAcquire<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x148f3e8: 0x1) at ../../src/corelib/thread/qgenericatomic.h:166
#2  testAndSetAcquire (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, this=0x148f3e8, this@entry=0x1) at ../../src/corelib/thread/qbasicatomic.h:278
#3  fastTryLock (current=<synthetic pointer>, this=0x148f3e8, this@entry=0x1) at thread/qmutex.h:82
#4  QMutex::lock (this=this@entry=0x148f3e8) at thread/qmutex.cpp:212
#5  0x00007fe158cc9555 in QMutexLocker (m=0x148f3e8, this=<synthetic pointer>) at ../../src/corelib/thread/qmutex.h:128
#6  canWaitLocked (this=0x148f3c0) at ../../src/corelib/thread/qthread_p.h:249
#7  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7fe0980012d0) at kernel/qeventdispatcher_glib.cpp:254
#8  postEventSourceCheck (source=0x7fe0980012d0) at kernel/qeventdispatcher_glib.cpp:264
#9  0x00007fe154a818f1 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#10 0x00007fe154a81df8 in ?? () from /usr/lib64/libglib-2.0.so.0
#11 0x00007fe154a81f7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#12 0x00007fe158cc8a5b in QEventDispatcherGlib::processEvents (this=0x7fe0980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007fe158c6fa63 in QEventLoop::exec (this=this@entry=0x7fe09fb48db0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fe158a9284a in QThread::exec (this=this@entry=0x1316140) at thread/qthread.cpp:503
#15 0x00007fe15c90ef82 in QQuickPixmapReader::run (this=0x1316140) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/util/qquickpixmapcache.cpp:754
#16 0x00007fe158a9755f in QThreadPrivate::start (arg=0x1316140) at thread/qthread_unix.cpp:331
#17 0x00007fe157baa0a4 in start_thread () from /lib64/libpthread.so.0
#18 0x00007fe1583a904d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fe08fd79700 (LWP 1786)):
#0  0x00007fe1583a0c1d in poll () from /lib64/libc.so.6
#1  0x00007fe154a81e64 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe154a81f7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe158cc8a5b in QEventDispatcherGlib::processEvents (this=0x7fe0880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fe158c6fa63 in QEventLoop::exec (this=this@entry=0x7fe08fd78dd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fe158a9284a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fe0913c6cf7 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#7  0x00007fe158a9755f in QThreadPrivate::start (arg=0x2567540) at thread/qthread_unix.cpp:331
#8  0x00007fe157baa0a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fe1583a904d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fe08d539700 (LWP 2829)):
#0  0x00007fe1583b5687 in __libc_disable_asynccancel () from /lib64/libc.so.6
#1  0x00007fe15839ccf9 in read () from /lib64/libc.so.6
#2  0x00007fe154ac2b60 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe154a81999 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fe154a81df8 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007fe154a81f7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#6  0x00007fe158cc8a5b in QEventDispatcherGlib::processEvents (this=0x7fe07c03fb00, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x00007fe158c6fa63 in QEventLoop::exec (this=this@entry=0x7fe08d538df0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fe158a9284a in QThread::exec (this=this@entry=0x3a91400) at thread/qthread.cpp:503
#9  0x00007fe15bd7b5f8 in QQmlThreadPrivate::run (this=0x3a91400) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#10 0x00007fe158a9755f in QThreadPrivate::start (arg=0x3a91400) at thread/qthread_unix.cpp:331
#11 0x00007fe157baa0a4 in start_thread () from /lib64/libpthread.so.0
#12 0x00007fe1583a904d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fe15ee747c0 (LWP 1727)):
[KCrash Handler]
#6  QQuickItem::height (this=0x0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickitem.cpp:6211
#7  0x00007fe092e621c4 in NotificationsHelper::repositionPopups (this=this@entry=0x1929440) at /usr/src/debug/plasma-workspace-5.5.0/applets/notifications/plugin/notificationshelper.cpp:374
#8  0x00007fe092e628d8 in NotificationsHelper::onPopupShown (this=0x1929440) at /usr/src/debug/plasma-workspace-5.5.0/applets/notifications/plugin/notificationshelper.cpp:142
#9  0x00007fe158ca140f in call (a=0x7fff5cce18a0, r=0x1929440, this=0x16840d0) at ../../src/corelib/kernel/qobject_impl.h:124
#10 QMetaObject::activate (sender=sender@entry=0x1944ad0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fff5cce18a0) at kernel/qobject.cpp:3703
#11 0x00007fe158ca1fb7 in QMetaObject::activate (sender=sender@entry=0x1944ad0, m=m@entry=0x7fe1597dbce0 <QWindow::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fff5cce18a0) at kernel/qobject.cpp:3583
#12 0x00007fe1591c5e62 in QWindow::visibleChanged (this=this@entry=0x1944ad0, _t1=_t1@entry=false) at .moc/moc_qwindow.cpp:715
#13 0x00007fe1591c8e97 in QWindow::setVisible (this=this@entry=0x1944ad0, visible=visible@entry=false) at kernel/qwindow.cpp:473
#14 0x00007fe1591c91b0 in QWindow::destroy (this=this@entry=0x1944ad0) at kernel/qwindow.cpp:1621
#15 0x00007fe1591c9328 in QWindow::~QWindow (this=0x1944ad0, __in_chrg=<optimized out>) at kernel/qwindow.cpp:204
#16 0x00007fe15c9ad8c1 in QQuickWindow::~QQuickWindow (this=0x1944ad0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickwindow.cpp:1111
#17 0x00007fe144b19451 in ~QQmlElement (this=0x1944ad0, __in_chrg=<optimized out>) at /usr/include/qt5/QtQml/qqmlprivate.h:98
#18 QQmlPrivate::QQmlElement<PlasmaQuick::Dialog>::~QQmlElement (this=0x1944ad0, __in_chrg=<optimized out>) at /usr/include/qt5/QtQml/qqmlprivate.h:98
#19 0x00007fe092e62d1e in qDeleteAll<QList<QQuickWindow*>::const_iterator> (end=..., begin=...) at /usr/include/qt5/QtCore/qalgorithms.h:317
#20 qDeleteAll<QList<QQuickWindow*> > (c=...) at /usr/include/qt5/QtCore/qalgorithms.h:325
#21 NotificationsHelper::~NotificationsHelper (this=0x1929440, __in_chrg=<optimized out>) at /usr/src/debug/plasma-workspace-5.5.0/applets/notifications/plugin/notificationshelper.cpp:50
#22 0x00007fe092e6703b in ~QQmlElement (this=0x1929440, __in_chrg=<optimized out>) at /usr/include/qt5/QtQml/qqmlprivate.h:98
#23 QQmlPrivate::QQmlElement<NotificationsHelper>::~QQmlElement (this=0x1929440, __in_chrg=<optimized out>) at /usr/include/qt5/QtQml/qqmlprivate.h:98
#24 0x00007fe158ca031c in QObjectPrivate::deleteChildren (this=this@entry=0x191c370) at kernel/qobject.cpp:1951
#25 0x00007fe158ca9f6c in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1031
#26 0x00007fe15c9a157f in QQuickItem::~QQuickItem (this=0x191c320, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickitem.cpp:2224
#27 0x00007fe15c9c0ffe in ~QQuickColumn (this=0x191c320, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickpositioners_p.h:169
#28 ~QQmlElement (this=0x191c320, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#29 QQmlPrivate::QQmlElement<QQuickColumn>::~QQmlElement (this=0x191c320, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#30 0x00007fe158ca031c in QObjectPrivate::deleteChildren (this=this@entry=0x1907e90) at kernel/qobject.cpp:1951
#31 0x00007fe158ca9f6c in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1031
#32 0x00007fe15c9a157f in QQuickItem::~QQuickItem (this=0x1907b70, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickitem.cpp:2224
#33 0x00007fe15c9bcdc6 in ~QQmlElement (this=0x1907b70, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#34 QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement (this=0x1907b70, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#35 0x00007fe158ca031c in QObjectPrivate::deleteChildren (this=this@entry=0x1906ff0) at kernel/qobject.cpp:1951
#36 0x00007fe158ca9f6c in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1031
#37 0x00007fe15c9a157f in QQuickItem::~QQuickItem (this=0x1906fa0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickitem.cpp:2224
#38 0x00007fe15c9c0ffe in ~QQuickColumn (this=0x1906fa0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickpositioners_p.h:169
#39 ~QQmlElement (this=0x1906fa0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#40 QQmlPrivate::QQmlElement<QQuickColumn>::~QQmlElement (this=0x1906fa0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#41 0x00007fe158ca031c in QObjectPrivate::deleteChildren (this=this@entry=0x19063d0) at kernel/qobject.cpp:1951
#42 0x00007fe158ca9f6c in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1031
#43 0x00007fe15c9a157f in QQuickItem::~QQuickItem (this=0x19061a0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickitem.cpp:2224
#44 0x00007fe15c9bd116 in ~QQmlElement (this=0x19061a0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#45 QQmlPrivate::QQmlElement<QQuickFlickable>::~QQmlElement (this=0x19061a0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#46 0x00007fe158ca031c in QObjectPrivate::deleteChildren (this=this@entry=0x18d2b50) at kernel/qobject.cpp:1951
#47 0x00007fe158ca9f6c in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1031
#48 0x00007fe15c9a157f in QQuickItem::~QQuickItem (this=0x18d0870, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickitem.cpp:2224
#49 0x00007fe15c9bd016 in ~QQmlElement (this=0x18d0870, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#50 QQmlPrivate::QQmlElement<QQuickFocusScope>::~QQmlElement (this=0x18d0870, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlprivate.h:98
#51 0x00007fe158ca031c in QObjectPrivate::deleteChildren (this=this@entry=0x18ceb40) at kernel/qobject.cpp:1951
#52 0x00007fe158ca9f6c in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1031
#53 0x00007fe15c9a157f in QQuickItem::~QQuickItem (this=0x18ceae0, __in_chrg=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickitem.cpp:2224
#54 0x00007fe0a575e076 in ~QQmlElement (this=0x18ceae0, __in_chrg=<optimized out>) at /usr/include/qt5/QtQml/qqmlprivate.h:98
#55 QQmlPrivate::QQmlElement<MouseEventListener>::~QQmlElement (this=0x18ceae0, __in_chrg=<optimized out>) at /usr/include/qt5/QtQml/qqmlprivate.h:98
#56 0x00007fe15e8743b6 in PlasmaQuick::AppletQuickItem::~AppletQuickItem (this=0x21fd020, __in_chrg=<optimized out>) at /usr/src/debug/plasma-framework-5.16.0/src/plasmaquick/appletquickitem.cpp:431
#57 0x00007fe12c41c7b9 in AppletInterface::~AppletInterface (this=0x21fd020, __in_chrg=<optimized out>) at /usr/src/debug/plasma-framework-5.16.0/src/scriptengines/qml/plasmoid/appletinterface.cpp:154
#58 0x00007fe158ca031c in QObjectPrivate::deleteChildren (this=this@entry=0x243b9e0) at kernel/qobject.cpp:1951
#59 0x00007fe158ca9f6c in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1031
#60 0x00007fe12c418c54 in ~DeclarativeAppletScript (this=0x249b8d0, __in_chrg=<optimized out>) at /usr/src/debug/plasma-framework-5.16.0/src/scriptengines/qml/plasmoid/declarativeappletscript.cpp:69
#61 DeclarativeAppletScript::~DeclarativeAppletScript (this=0x249b8d0, __in_chrg=<optimized out>) at /usr/src/debug/plasma-framework-5.16.0/src/scriptengines/qml/plasmoid/declarativeappletscript.cpp:71
#62 0x00007fe15d04c75f in Plasma::AppletPrivate::~AppletPrivate (this=0x24bf6b0, __in_chrg=<optimized out>) at /usr/src/debug/plasma-framework-5.16.0/src/plasma/private/applet_p.cpp:101
#63 0x00007fe15d04c929 in Plasma::AppletPrivate::~AppletPrivate (this=0x24bf6b0, __in_chrg=<optimized out>) at /usr/src/debug/plasma-framework-5.16.0/src/plasma/private/applet_p.cpp:110
#64 0x00007fe15d03ed99 in Plasma::Applet::~Applet (this=0x24bf560, __in_chrg=<optimized out>) at /usr/src/debug/plasma-framework-5.16.0/src/plasma/applet.cpp:116
#65 0x00007fe0977aa407 in ~NotificationsApplet (this=0x24bf560, __in_chrg=<optimized out>) at /usr/src/debug/plasma-workspace-5.5.0/applets/notifications/lib/notificationsapplet.cpp:38
#66 NotificationsApplet::~NotificationsApplet (this=0x24bf560, __in_chrg=<optimized out>) at /usr/src/debug/plasma-workspace-5.5.0/applets/notifications/lib/notificationsapplet.cpp:41
#67 0x00007fe158ca27e8 in QObject::event (this=0x24bf560, e=<optimized out>) at kernel/qobject.cpp:1237
#68 0x00007fe159feae8c in QApplicationPrivate::notify_helper (this=this@entry=0xb31c10, receiver=receiver@entry=0x24bf560, e=e@entry=0x3c21090) at kernel/qapplication.cpp:3717
#69 0x00007fe159fefcd8 in QApplication::notify (this=0x7fff5cce29b0, receiver=0x24bf560, e=0x3c21090) at kernel/qapplication.cpp:3500
#70 0x00007fe158c71ba5 in QCoreApplication::notifyInternal (this=0x7fff5cce29b0, receiver=0x24bf560, event=event@entry=0x3c21090) at kernel/qcoreapplication.cpp:965
#71 0x00007fe158c73d67 in sendEvent (event=0x3c21090, receiver=<optimized out>) at kernel/qcoreapplication.h:224
#72 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xb26ac0) at kernel/qcoreapplication.cpp:1593
#73 0x00007fe158c74318 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#74 0x00007fe158cc95c3 in postEventSourceDispatch (s=0xb85570) at kernel/qeventdispatcher_glib.cpp:271
#75 0x00007fe154a81c84 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#76 0x00007fe154a81ed8 in ?? () from /usr/lib64/libglib-2.0.so.0
#77 0x00007fe154a81f7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#78 0x00007fe158cc8a3c in QEventDispatcherGlib::processEvents (this=0xb85550, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#79 0x00007fe158c6fa63 in QEventLoop::exec (this=this@entry=0x7fff5cce2840, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#80 0x00007fe158c775d6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#81 0x00007fe1591ba3ac in QGuiApplication::exec () at kernel/qguiapplication.cpp:1528
#82 0x00007fe159fe7615 in QApplication::exec () at kernel/qapplication.cpp:2977
#83 0x0000000000436b00 in main (argc=2, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.5.0/shell/main.cpp:179

Reported using DrKonqi
Comment 1 opensuse.lietuviu.kalba 2015-12-08 21:58:21 UTC 
P.S. KDE Plasma 5.4.3 was upgraded to 5.5.0, loged out, loged again hour ago.
Comment 2 Martin Klapetek 2015-12-09 16:55:45 UTC 
Did you unselect notifications too?
Comment 3 opensuse.lietuviu.kalba 2015-12-09 16:57:07 UTC 
I don't remember in that particular case, but I can test this procedure again.
Comment 4 opensuse.lietuviu.kalba 2015-12-09 17:04:08 UTC 
Now I deselected items one by one and pressed Aplay – no crash. Them enabled all at once – no crash. Deselected all at once – no crash. I can not reproduce... Maybe it could be somehow related to yesterday upgrade to Plasma 5.5? I don't know...
Comment 5 Martin Klapetek 2015-12-09 17:14:37 UTC 
It's reproducible if you remove the notifications applet while there is a popup on screen.
Comment 6 opensuse.lietuviu.kalba 2015-12-09 17:35:18 UTC 
Yes, I reproduced this by these steps.
1. Open Systray settings
2. In Dolphin copy some file. At end some notification appeared.
3. Deselect Notifications in Systray settings and press Aplay.
Result: Plasma Crash.
Comment 7 opensuse.lietuviu.kalba 2015-12-09 17:39:51 UTC 
Created attachment 95955 [details]
New crash information added by DrKonqi

plasmashell (5.5.0) using Qt 5.5.0

- What I was doing when the application crashed:

Reproduced bug using just provided instructions.

-- Backtrace (Reduced):
#6  QQuickItem::height (this=0x0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickitem.cpp:6211
#7  0x00007f3d14d421c4 in NotificationsHelper::repositionPopups (this=this@entry=0x2722920) at /usr/src/debug/plasma-workspace-5.5.0/applets/notifications/plugin/notificationshelper.cpp:374
#8  0x00007f3d14d428d8 in NotificationsHelper::onPopupShown (this=0x2722920) at /usr/src/debug/plasma-workspace-5.5.0/applets/notifications/plugin/notificationshelper.cpp:142
#9  0x00007f3ddab8140f in call (a=0x7fff503f18b0, r=0x2722920, this=0x26ad1e0) at ../../src/corelib/kernel/qobject_impl.h:124
[...]
#12 0x00007f3ddb0a5e62 in QWindow::visibleChanged (this=this@entry=0x247d400, _t1=_t1@entry=false) at .moc/moc_qwindow.cpp:715
Comment 8 Martin Klapetek 2015-12-09 18:31:38 UTC 
Git commit 2b59ccd531dcdb7d86577cee1d987f95a9db9bf0 by Martin Klapetek.
Committed on 09/12/2015 at 18:29.
Pushed by mklapetek into branch 'Plasma/5.5'.

[notifications] Check if the popup is visible before updating its geometry

This slot gets triggered also on popup hiding, which is unwanted.
Should also prevent a crash when unloading notifications applet while
there is an active popup on screen.
FIXED-IN: 5.5.1

M  +2    -2    applets/notifications/plugin/notificationshelper.cpp

http://commits.kde.org/plasma-workspace/2b59ccd531dcdb7d86577cee1d987f95a9db9bf0
Comment 9 David Edmundson 2015-12-12 11:03:43 UTC 
*** Bug 356542 has been marked as a duplicate of this bug. ***