Application: plasmashell (5.10.4)

Qt Version: 5.9.1
Frameworks Version: 5.36.0
Operating System: Linux 4.12.3-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed: 
nothing at all, system just sleeps without screensaver. Firefox and Thunderbird in the background

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f01fdc7bc80 (LWP 16235))]

Thread 18 (Thread 0x7f00f1be0700 (LWP 2728)):
#0  0x00007f01eb50734e in pa_srbchannel_read () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#1  0x00007f01eb5038e8 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#2  0x00007f01eb5065eb in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#3  0x00007f01eb506989 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#4  0x00007f01eb50720a in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#5  0x00007f01ebd8d99c in pa_mainloop_dispatch () at /usr/lib/libpulse.so.0
#6  0x00007f01ebd8dd9c in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#7  0x00007f01ebd8de40 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#8  0x00007f01ebd9be29 in  () at /usr/lib/libpulse.so.0
#9  0x00007f01eb516fe8 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#10 0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7f011ff5f700 (LWP 2727)):
#0  0x00007f01f794e9dc in QMutex::lock() () at /usr/lib/libQt5Core.so.5
#1  0x00007f01f7b94f8f in  () at /usr/lib/libQt5Core.so.5
#2  0x00007f01f1b78148 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#3  0x00007f01f1b78b3b in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f01f1b78d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f01f7b95084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f01f7b38ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f01f795240e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f01faadb1d5 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7f010973d700 (LWP 16273)):
#0  0x00007f01f7260e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f01f1b78c09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f01f1b78d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f01f7b95084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f01f7b38ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f01f795240e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f010b36118a in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7f01137fe700 (LWP 16263)):
#0  0x00007f01f1b77fb5 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f01f1b78b3b in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f01f1b78d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f01f7b95084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f01f7b38ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f01f795240e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7f0113fff700 (LWP 16262)):
#0  0x00007f01f7260e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f01f1b78c09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f01f1b78d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f01f7b95084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f01f7b38ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f01f795240e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f011c92d3c5 in  () at /usr/lib/qt/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#7  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7f0135aad700 (LWP 16258)):
#0  0x00007f01f7260e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f01f1b78c09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f01f1b78d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f01f7b95084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f01f7b38ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f01f795240e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f01fb6938d6 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7f0140ba2700 (LWP 16246)):
#0  0x00007f01f6b241ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f0147ee450c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f0147ee4218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f01413a3700 (LWP 16245)):
#0  0x00007f01f6b241ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f0147ee450c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f0147ee4218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f0141ba4700 (LWP 16244)):
#0  0x00007f01f6b241ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f0147ee450c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f0147ee4218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f01423a5700 (LWP 16243)):
#0  0x00007f01f6b241ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f0147ee450c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f0147ee4218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f0142dab700 (LWP 16242)):
#0  0x00007f01f6b241ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f0147ee450c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f0147ee4218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f01436ed700 (LWP 16241)):
#0  0x00007f01f6b241ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f0147ee450c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f0147ee4218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f01ca490700 (LWP 16240)):
#0  0x00007f01f6b241ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f01fd3aeb04 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f01fd3aeb49 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f01dd55c700 (LWP 16239)):
#0  0x00007f01f725cbad in read () at /usr/lib/libc.so.6
#1  0x00007f01f1bbc730 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f01f1b786eb in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f01f1b78bb0 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f01f1b78d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f01f7b95084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f01f7b38ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f01f795240e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f01faadb1d5 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f01dfbf1700 (LWP 16238)):
#0  0x00007f01f7260e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f01f1b78c09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f01f1b78d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f01f7b95084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f01f7b38ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f01f795240e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f01faadb1d5 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f01e572d700 (LWP 16237)):
#0  0x00007f01f7260e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f01f1b78c09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f01f1b78d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f01f7b95084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f01f7b38ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f01f795240e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f01f7fb4396 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f01e77be700 (LWP 16236)):
#0  0x00007f01f7260e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f01fc2bc8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f01fc2be679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f01e9d3472a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f01f795715b in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f01f6b1e049 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f01f726af0f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f01fdc7bc80 (LWP 16235)):
[KCrash Handler]
#5  0x00007f01f71b08c0 in raise () at /usr/lib/libc.so.6
#6  0x00007f01f71b1f72 in abort () at /usr/lib/libc.so.6
#7  0x00007f01f71efbe2 in __libc_message () at /usr/lib/libc.so.6
#8  0x00007f01f71f62ec in malloc_printerr () at /usr/lib/libc.so.6
#9  0x00007f01f71f76d1 in _int_free () at /usr/lib/libc.so.6
#10 0x00007f01f7b85693 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f01f7b8294b in QVariant::cmp(QVariant const&) const () at /usr/lib/libQt5Core.so.5
#12 0x00007f01faa2e3f9 in QQmlOpenMetaObject::setValue(QByteArray const&, QVariant const&) () at /usr/lib/libQt5Qml.so.5
#13 0x00007f01fab0dd1e in  () at /usr/lib/libQt5Qml.so.5
#14 0x00007f01fab10036 in  () at /usr/lib/libQt5Qml.so.5
#15 0x00007f01fab10102 in  () at /usr/lib/libQt5Qml.so.5
#16 0x00007f01f7b6793d in QObjectData::dynamicMetaObject() const () at /usr/lib/libQt5Core.so.5
#17 0x00007f01faa3646e in QQmlData::disconnectNotifiers() () at /usr/lib/libQt5Qml.so.5
#18 0x00007f01faa3687a in QQmlData::destroyed(QObject*) () at /usr/lib/libQt5Qml.so.5
#19 0x00007f01f7b719a8 in QObject::~QObject() () at /usr/lib/libQt5Core.so.5
#20 0x00007f01f7b722fa in QObject::~QObject() () at /usr/lib/libQt5Core.so.5
#21 0x00007f01fab102d7 in  () at /usr/lib/libQt5Qml.so.5
#22 0x00007f01fab10451 in  () at /usr/lib/libQt5Qml.so.5
#23 0x00007f01fab107de in QQmlListModel::clear() () at /usr/lib/libQt5Qml.so.5
#24 0x00007f01fab1612d in  () at /usr/lib/libQt5Qml.so.5
#25 0x00007f01fab16705 in QQmlListModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/libQt5Qml.so.5
#26 0x00007f01faa8f2c9 in  () at /usr/lib/libQt5Qml.so.5
#27 0x00007f01faa0cd5b in  () at /usr/lib/libQt5Qml.so.5
#28 0x00007f01faa0e542 in  () at /usr/lib/libQt5Qml.so.5
#29 0x00007f01faa0f269 in QV4::QObjectMethod::callInternal(QV4::CallData*, QV4::Scope&) const () at /usr/lib/libQt5Qml.so.5
#30 0x00007f01faa2826a in QV4::Runtime::method_callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () at /usr/lib/libQt5Qml.so.5
#31 0x00007f011df02ddb in  ()
#32 0x0000007c12f41260 in  ()
#33 0x0003200000000000 in  ()
#34 0x00007f01dc15d400 in  ()
#35 0x0000000000000000 in  ()

Reported using DrKonqi