Bug 410901

Application: plasmashell (5.14.5)

Qt Version: 5.11.3
Frameworks Version: 5.58.0
Operating System: Linux 5.2.7-100.fc29.x86_64 x86_64
Distribution: "Fedora release 29 (Twenty Nine)"

-- Information about the crash:
- Unusual behavior I noticed: plasma crashed when using the left down corner application starter

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f24d1342580 (LWP 1094))]

Thread 10 (Thread 0x7f24957ad700 (LWP 5169)):
#0  0x00007f24d19b27b4 in poll@plt () at /lib64/libglib-2.0.so.0
#1  0x00007f24d19e53a6 in  () at /lib64/libglib-2.0.so.0
#2  0x00007f24d19e54d0 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24d4d2a85b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f24d4cd93db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24d4b40d36 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f24d4b4a19b in  () at /lib64/libQt5Core.so.5
#7  0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#8  0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f2496dee700 (LWP 1621)):
#0  0x00007f24a66d7126 in do_read () at /usr/lib64/pulseaudio/libpulsecommon-12.2.so
#1  0x00007f24a66da0fb in do_pstream_read_write () at /usr/lib64/pulseaudio/libpulsecommon-12.2.so
#2  0x00007f24a66da4ad in srb_callback () at /usr/lib64/pulseaudio/libpulsecommon-12.2.so
#3  0x00007f24a66dad3a in srbchannel_rwloop () at /usr/lib64/pulseaudio/libpulsecommon-12.2.so
#4  0x00007f24a677afd8 in pa_mainloop_dispatch () at /lib64/libpulse.so.0
#5  0x00007f24a677b2b0 in pa_mainloop_iterate () at /lib64/libpulse.so.0
#6  0x00007f24a677b350 in pa_mainloop_run () at /lib64/libpulse.so.0
#7  0x00007f24a67895bd in thread () at /lib64/libpulse.so.0
#8  0x00007f24a66eb06c in internal_thread_func () at /usr/lib64/pulseaudio/libpulsecommon-12.2.so
#9  0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f24a4fbb700 (LWP 1529)):
#0  0x00007fffdebfa781 in clock_gettime ()
#1  0x00007f24d4694752 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f24d4d2a065 in  () at /lib64/libQt5Core.so.5
#3  0x00007f24d4d28b4d in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007f24d4d2a44f in  () at /lib64/libQt5Core.so.5
#5  0x00007f24d19e4dc1 in g_main_context_check () at /lib64/libglib-2.0.so.0
#6  0x00007f24d19e5350 in  () at /lib64/libglib-2.0.so.0
#7  0x00007f24d19e54d0 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#8  0x00007f24d4d2a85b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#9  0x00007f24d4cd93db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#10 0x00007f24d4b40d36 in QThread::exec() () at /lib64/libQt5Core.so.5
#11 0x00007f24a5790d9b in KCupsConnection::run() () at /lib64/libkcupslib.so
#12 0x00007f24d4b4a19b in  () at /lib64/libQt5Core.so.5
#13 0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#14 0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f24a7fff700 (LWP 1500)):
#0  0x00007f24d467b481 in poll () at /lib64/libc.so.6
#1  0x00007f24d19e53a6 in  () at /lib64/libglib-2.0.so.0
#2  0x00007f24d19e54d0 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24d4d2a85b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f24d4cd93db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24d4b40d36 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f24d6b5a53a in  () at /lib64/libQt5Quick.so.5
#7  0x00007f24d4b4a19b in  () at /lib64/libQt5Core.so.5
#8  0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f24aea36700 (LWP 1489)):
#0  0x00007f24d423472c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f24b398e94b in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007f24b398e68b in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#4  0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f24af237700 (LWP 1488)):
#0  0x00007f24d423472c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f24b398e94b in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007f24b398e68b in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#4  0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f24c22c2700 (LWP 1271)):
#0  0x00007f24d467b481 in poll () at /lib64/libc.so.6
#1  0x00007f24d19e53a6 in  () at /lib64/libglib-2.0.so.0
#2  0x00007f24d19e54d0 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24d4d2a85b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f24d4cd93db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24d4b40d36 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f24d68c7f59 in  () at /lib64/libQt5Qml.so.5
#7  0x00007f24d4b4a19b in  () at /lib64/libQt5Core.so.5
#8  0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f24c3522700 (LWP 1145)):
#0  0x00007f24d1a2d2a4 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f24d19e48f6 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f24d19e52db in  () at /lib64/libglib-2.0.so.0
#3  0x00007f24d19e54d0 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24d4d2a85b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24d4cd93db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24d4b40d36 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f24d550ef89 in  () at /lib64/libQt5DBus.so.5
#8  0x00007f24d4b4a19b in  () at /lib64/libQt5Core.so.5
#9  0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f24c40b7700 (LWP 1140)):
#0  0x00007f24d467b481 in poll () at /lib64/libc.so.6
#1  0x00007f24d6fbb39f in  () at /lib64/libxcb.so.1
#2  0x00007f24d6fbd01a in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f24c4226459 in  () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f24d4b4a19b in  () at /lib64/libQt5Core.so.5
#5  0x00007f24d422e58e in start_thread () at /lib64/libpthread.so.0
#6  0x00007f24d4686713 in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f24d1342580 (LWP 1094)):
[KCrash Handler]
#6  0x000055ccd29e3570 in  ()
#7  0x00007f24d4d037fb in QMetaObject::activate(QObject*, int, void**) () at /lib64/libQt5Core.so.5
#8  0x00007f24d66b8940 in  () at /lib64/libQt5Qml.so.5
#9  0x00007f24d6908fae in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /lib64/libQt5Qml.so.5
#10 0x00007f24d690fdac in  () at /lib64/libQt5Qml.so.5
#11 0x00007f24d6910093 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#12 0x00007f24d4d031f7 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#13 0x00007f24d4c95f60 in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /lib64/libQt5Core.so.5
#14 0x00007f24ac398d24 in  () at /usr/lib64/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#15 0x00007f24ac3b6073 in  () at /usr/lib64/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#16 0x00007f24ac3b930b in  () at /usr/lib64/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#17 0x00007f24d6817e56 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#18 0x00007f24d682e9e6 in  () at /lib64/libQt5Qml.so.5
#19 0x00007f24d682bc1a in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#20 0x00007f24d67e0e6d in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /lib64/libQt5Qml.so.5
#21 0x00007f24d67e182e in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /lib64/libQt5Qml.so.5
#22 0x00007f24d67e192c in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /lib64/libQt5Qml.so.5
#23 0x00007f24d67f4fc0 in QV4::Runtime::method_storeProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /lib64/libQt5Qml.so.5
#24 0x00007f24d6800abd in  () at /lib64/libQt5Qml.so.5
#25 0x00007f24a5f0748f in  ()
#26 0x00007f24c16834f8 in  ()
#27 0x00007f24c1683508 in  ()
#28 0x000055cccecfcf30 in  ()
#29 0x0000000000000000 in  ()
[Inferior 1 (process 1094) detached]

Reported using DrKonqi