Application: plasmashell (5.5.4)

Qt Version: 5.5.1
Operating System: Linux 4.4.6-040406-generic x86_64
Distribution: Netrunner 17

-- Information about the crash:
- What I was doing when the application crashed:
Plasma crashes in Firefox call when calling Media and Movie, and more. Crashes about every 60 min.

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 0x7fcab6eb9800 (LWP 5049))]

Thread 9 (Thread 0x7fcaa2083700 (LWP 5052)):
#0  0x00007fcab154788d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fcab5665bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fcab566774f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fcaa41f5779 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fcab1c49a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcab0d236aa in start_thread (arg=0x7fcaa2083700) at pthread_create.c:333
#6  0x00007fcab1552e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fca9b5eb700 (LWP 5054)):
#0  0x00007fcab1cf9f78 in QElapsedTimer::clockType() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fcab1cf9fc9 in QElapsedTimer::isMonotonic() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fcab1e7f49e in QTimerInfoList::repairTimersIfNeeded() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fcab1e7f513 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fcab1e808ee in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcaae27d77d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fcaae27e11b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fcaae27e2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fcab1e8150b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fcab1e2850a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fcab1c44ac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fcab4517c35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fcab1c49a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fcab0d236aa in start_thread (arg=0x7fca9b5eb700) at pthread_create.c:333
#14 0x00007fcab1552e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fca9163b700 (LWP 5056)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fca98c4e4da in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fca98c4dc17 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007fcab0d236aa in start_thread (arg=0x7fca9163b700) at pthread_create.c:333
#4  0x00007fcab1552e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fca8cdcb700 (LWP 5057)):
#0  0x00007fcab154788d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fcaae27e1ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcaae27e2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcab1e8150b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fcab1e2850a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcab1c44ac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fcab4517c35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fcab1c49a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fcab0d236aa in start_thread (arg=0x7fca8cdcb700) at pthread_create.c:333
#9  0x00007fcab1552e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fca86d8b700 (LWP 5058)):
#0  0x00007fcab154344d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fcaae2c14e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcaae27dcd4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcaae27e190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fcaae27e2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fcab1e8150b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fcab1e2850a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fcab1c44ac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fcab4517c35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fcab1c49a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fcab0d236aa in start_thread (arg=0x7fca86d8b700) at pthread_create.c:333
#11 0x00007fcab1552e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fca8521b700 (LWP 5059)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fcab68fa194 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fcab68fa1d9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fcab0d236aa in start_thread (arg=0x7fca8521b700) at pthread_create.c:333
#4  0x00007fcab1552e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fc9fde53700 (LWP 5061)):
#0  0x00007fcaae2c2869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fcaae27dc2c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcaae27e190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcaae27e2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fcab1e8150b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcab1e2850a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fcab1c44ac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fcab4eae2a6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fcab1c49a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fcab0d236aa in start_thread (arg=0x7fc9fde53700) at pthread_create.c:333
#10 0x00007fcab1552e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fc9ed733700 (LWP 5072)):
#0  0x00007fcaae2c2880 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fcaae27dbaa in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcaae27e190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcaae27e2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fcab1e8150b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcab1e2850a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fcab1c44ac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc9efa038f7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007fcab1c49a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fcab0d236aa in start_thread (arg=0x7fc9ed733700) at pthread_create.c:333
#10 0x00007fcab1552e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fcab6eb9800 (LWP 5049)):
[KCrash Handler]
#6  0x00007fcab2962600 in QWidget::windowHandle() const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007fc9f6db7f33 in Backend::itemContextMenu(QQuickItem*, QObject*)::{lambda()#1}::operator()() const () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/expandingiconstaskmanager/libexpandingiconstaskmanagerplugin.so
#8  0x00007fc9f6db9cb1 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, Backend::itemContextMenu(QQuickItem*, QObject*)::{lambda()#1}>::call({lambda()#1}, void**) () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/expandingiconstaskmanager/libexpandingiconstaskmanagerplugin.so
#9  0x00007fc9f6db9c86 in void QtPrivate::Functor<Backend::itemContextMenu(QQuickItem*, QObject*)::{lambda()#1}, 0>::call<QtPrivate::List<>, void>({lambda()#1}&, void*, {lambda()#1}&*) () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/expandingiconstaskmanager/libexpandingiconstaskmanagerplugin.so
#10 0x00007fc9f6db9c42 in QtPrivate::QFunctorSlotObject<Backend::itemContextMenu(QQuickItem*, QObject*)::{lambda()#1}, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/expandingiconstaskmanager/libexpandingiconstaskmanagerplugin.so
#11 0x00007fcab1e65ed8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fcab1e5a763 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fcab29379dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fcab293cea6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fcab1e2ad7b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fcab1e8030d in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fcab1e80811 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fcaae27dff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fcaae27e250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fcaae27e2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fcab1e814ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fcab1e2850a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fcab1e305ec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x000000000043258a in main ()

Reported using DrKonqi