Bug 362676

Summary:	Crash on app/window close
Product:	[Plasma] plasmashell	Reporter:	Jason <jasonbailey1498>
Component:	Task Manager and Icons-Only Task Manager widgets	Assignee:	Eike Hein <hein>
Status:	RESOLVED FIXED
Severity:	crash	CC:	bshah, milan.zimmermann, notmart, plasma-bugs-null
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.5.3
Target Milestone:	1.0
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Jason 2016-05-04 21:01:55 UTC

Application: plasmashell (5.5.3)

Qt Version: 5.5.1
Frameworks Version: 5.21.0
Operating System: Linux 4.5.0-3-default x86_64
Distribution: "openSUSE Tumbleweed (20160422) (x86_64)"

-- Information about the crash:
I closed Firefox and Plasma immediately segfaulted. This happens randomly -- doesn't seem to matter what kind of app (gtk vs qt for example), whether the window is maximized, etc.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f481f4848c0 (LWP 17326))]

Thread 8 (Thread 0x7f4808b12700 (LWP 17329)):
#0  0x00007f4818a0207d in poll () at /lib64/libc.so.6
#1  0x00007f481d8de3f2 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f481d8dffc7 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f480ac62dd9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f48190ef91f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f4818203424 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f4818a0aadd in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f4801dcd700 (LWP 17342)):
#0  0x00007f4818a0207d in poll () at /lib64/libc.so.6
#1  0x00007f48150e9364 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f48150e946c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f481931440b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f48192be53a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f48190eaadc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f481c3bc0e5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f48190ef91f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f4818203424 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f4818a0aadd in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f47f4847700 (LWP 17343)):
#0  0x00007f481512c6c4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f48150e9286 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f48150e946c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f481931440b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f48192be53a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f48190eaadc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f481c3bc0e5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f48190ef91f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f4818203424 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f4818a0aadd in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f47eeeff700 (LWP 17344)):
#0  0x00007f4818a0207d in poll () at /lib64/libc.so.6
#1  0x00007f48150e9364 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f48150e946c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f481931440b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f48192be53a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f48190eaadc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f481c3bc0e5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f48190ef91f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f4818203424 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f4818a0aadd in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f47ed56f700 (LWP 17345)):
#0  0x00007f481820903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f481eb7b3d4 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f481eb7b419 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f4818203424 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f4818a0aadd in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f4765c5b700 (LWP 17346)):
#0  0x00007f4818a0207d in poll () at /lib64/libc.so.6
#1  0x00007f48150e9364 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f48150e946c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f481931440b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f48192be53a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f48190eaadc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f481cf45e92 in  () at /usr/lib64/libQt5Quick.so.5
#7  0x00007f48190ef91f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f4818203424 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f4818a0aadd in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f4751f05700 (LWP 17395)):
#0  0x00007f481512c6a9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f48150e8dec in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f48150e9308 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f48150e946c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f481931440b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f48192be53a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f48190eaadc in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f475463ce07 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#8  0x00007f48190ef91f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f4818203424 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f4818a0aadd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f481f4848c0 (LWP 17326)):
[KCrash Handler]
#6  0x00007f481c198db8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f481c3fb00a in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f481c420cdc in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f481c4213c8 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f48192edff0 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f48193660fc in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib64/libQt5Core.so.5
#12 0x00007f475d049834 in  () at /usr/lib64/libtaskmanager.so.5
#13 0x00007f475d04a9b7 in  () at /usr/lib64/libtaskmanager.so.5
#14 0x00007f48192ede3a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#15 0x00007f475d052338 in TaskManager::AbstractGroupableItem::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#16 0x00007f475d03fb90 in  () at /usr/lib64/libtaskmanager.so.5
#17 0x00007f48192ede3a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f475d052468 in TaskManager::Task::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#19 0x00007f475d03222b in TaskManager::Task::setActive(bool) () at /usr/lib64/libtaskmanager.so.5
#20 0x00007f475d045759 in TaskManager::TaskManager::activeWindowChanged(unsigned long long) () at /usr/lib64/libtaskmanager.so.5
#21 0x00007f48192edcc7 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#22 0x00007f481bee02b2 in KWindowSystem::activeWindowChanged(unsigned long long) () at /usr/lib64/libKF5WindowSystem.so.5
#23 0x00007f4801fe46cb in  () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#24 0x00007f48192bd77f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#25 0x00007f480ac667b4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#26 0x00007f480ac6753b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#27 0x00007f48192eec29 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f481a63787c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#29 0x00007f481a63c986 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x00007f48192c0bf3 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#31 0x00007f48192c2f16 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#32 0x00007f4819313fe3 in  () at /usr/lib64/libQt5Core.so.5
#33 0x00007f48150e9197 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#34 0x00007f48150e93c8 in  () at /usr/lib64/libglib-2.0.so.0
#35 0x00007f48150e946c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#36 0x00007f48193143ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#37 0x00007f48192be53a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#38 0x00007f48192c61fd in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#39 0x0000000000436527 in main ()

Reported using DrKonqi

Comment 1 Marco Martin 2016-05-06 09:02:59 UTC

*** Bug 362716 has been marked as a duplicate of this bug. ***

Comment 2 Marco Martin 2016-05-06 09:08:37 UTC

*** Bug 362670 has been marked as a duplicate of this bug. ***

Comment 3 Marco Martin 2016-05-06 09:09:29 UTC

*** Bug 362665 has been marked as a duplicate of this bug. ***

Comment 4 Eike Hein 2016-06-16 23:22:04 UTC

Plasma 5.7 ships a fully-rewritten Task Manager backend which should resolve these issues. Please re-test with the Plasma 5.7 final release and feel free to reopen if problems do persist after all.