Application: plasma-discover (5.9.5)

Qt Version: 5.7.1
Frameworks Version: 5.33.0
Operating System: Linux 4.8.0-51-generic x86_64
Distribution: KDE neon User Edition 5.9

-- Information about the crash:
- What I was doing when the application crashed:
any time i perfrome a second search in Plasma Discover or press the backspace key in search box

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7efdf61078c0 (LWP 6149))]

Thread 9 (Thread 0x7efd7a7fc700 (LWP 7808)):
#0  QMutex::lock (this=this@entry=0x1bbd0e0) at thread/qmutex.cpp:225
#1  0x00007efdf305f029 in QMutexLocker::QMutexLocker (m=0x1bbd0e0, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:137
#2  QThreadData::canWaitLocked (this=0x1bbd0b0) at ../../include/QtCore/5.7.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:253
#3  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7efd64001810) at kernel/qeventdispatcher_glib.cpp:259
#4  postEventSourceCheck (source=0x7efd64001810) at kernel/qeventdispatcher_glib.cpp:269
#5  0x00007efded80bdc1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007efded80c330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007efded80c49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007efdf305f75b in QEventDispatcherGlib::processEvents (this=0x7efd64002230, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#9  0x00007efdf300a0ba in QEventLoop::exec (this=this@entry=0x7efd7a7fbd00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#10 0x00007efdf2e39f64 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:507
#11 0x00007efdf2e3eb48 in QThreadPrivate::start (arg=0x54849a0) at thread/qthread_unix.cpp:368
#12 0x00007efdef8c76ba in start_thread (arg=0x7efd7a7fc700) at pthread_create.c:333
#13 0x00007efdf244282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7efd98ff9700 (LWP 7802)):
#0  0x00007efded850a79 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007efded80c34e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efded80c49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdf305f75b in QEventDispatcherGlib::processEvents (this=0x7efd80001c90, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007efdf300a0ba in QEventLoop::exec (this=this@entry=0x7efd98ff8d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007efdf2e39f64 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007efdf2e3eb48 in QThreadPrivate::start (arg=0x2792e00) at thread/qthread_unix.cpp:368
#7  0x00007efdef8c76ba in start_thread (arg=0x7efd98ff9700) at pthread_create.c:333
#8  0x00007efdf244282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7efdbf7fe700 (LWP 6159)):
#0  0x00007efded850a94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007efded80b9a0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efded80c2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efded80c49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007efdf305f75b in QEventDispatcherGlib::processEvents (this=0x7efdac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007efdf300a0ba in QEventLoop::exec (this=this@entry=0x7efdbf7fdd00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007efdf2e39f64 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007efdf2e3eb48 in QThreadPrivate::start (arg=0x2a8e0a0) at thread/qthread_unix.cpp:368
#8  0x00007efdef8c76ba in start_thread (arg=0x7efdbf7fe700) at pthread_create.c:333
#9  0x00007efdf244282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7efdc5ec1700 (LWP 6156)):
#0  0x00007efdf2436b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007efded80c38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efded80c49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdf305f75b in QEventDispatcherGlib::processEvents (this=0x7efdc00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007efdf300a0ba in QEventLoop::exec (this=this@entry=0x7efdc5ec0d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007efdf2e39f64 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007efdf2e3eb48 in QThreadPrivate::start (arg=0x2a21f70) at thread/qthread_unix.cpp:368
#7  0x00007efdef8c76ba in start_thread (arg=0x7efdc5ec1700) at pthread_create.c:333
#8  0x00007efdf244282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7efdd94a4700 (LWP 6154)):
#0  0x00007efded80bf16 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007efded80c3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efded80c49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdf305f75b in QEventDispatcherGlib::processEvents (this=0x7efdd0002e00, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007efdf300a0ba in QEventLoop::exec (this=this@entry=0x7efdd94a3c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007efdf2e39f64 in QThread::exec (this=this@entry=0x27964c0) at thread/qthread.cpp:507
#6  0x00007efdf577ffc6 in QQuickPixmapReader::run (this=0x27964c0) at util/qquickpixmapcache.cpp:822
#7  0x00007efdf2e3eb48 in QThreadPrivate::start (arg=0x27964c0) at thread/qthread_unix.cpp:368
#8  0x00007efdef8c76ba in start_thread (arg=0x7efdd94a4700) at pthread_create.c:333
#9  0x00007efdf244282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7efddb260700 (LWP 6152)):
#0  0x00007ffd54d3aa87 in clock_gettime ()
#1  0x00007efdf2450c86 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7efddb25fa40) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007efdf2ee4241 in qt_clock_gettime (ts=0x7efddb25fa40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:109
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:164
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:173
#5  0x00007efdf305d3d9 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7efdcc002cd0) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007efdf305d945 in QTimerInfoList::timerWait (this=0x7efdcc002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007efdf305ed0e in timerSourcePrepareHelper (timeout=0x7efddb25fb14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:132
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7efddb25fb14) at kernel/qeventdispatcher_glib.cpp:165
#9  0x00007efded80b91d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007efded80c2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007efded80c49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007efdf305f75b in QEventDispatcherGlib::processEvents (this=0x7efdcc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007efdf300a0ba in QEventLoop::exec (this=this@entry=0x7efddb25fce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#14 0x00007efdf2e39f64 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:507
#15 0x00007efdf37b0bf5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007efdf2e3eb48 in QThreadPrivate::start (arg=0x11d6990) at thread/qthread_unix.cpp:368
#17 0x00007efdef8c76ba in start_thread (arg=0x7efddb260700) at pthread_create.c:333
#18 0x00007efdf244282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7efddc471700 (LWP 6151)):
#0  0x00007efded850a94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007efded80c23d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efded80c49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdf305f75b in QEventDispatcherGlib::processEvents (this=0x7efdd40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007efdf300a0ba in QEventLoop::exec (this=this@entry=0x7efddc470cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007efdf2e39f64 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007efdf624c735 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007efdf2e3eb48 in QThreadPrivate::start (arg=0x7efdf62c0d60) at thread/qthread_unix.cpp:368
#8  0x00007efdef8c76ba in start_thread (arg=0x7efddc471700) at pthread_create.c:333
#9  0x00007efdf244282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7efde4b04700 (LWP 6150)):
#0  0x00007efdf2436b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007efded3a1c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007efded3a38d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007efde705cd79 in QXcbEventReader::run (this=0x114cde0) at qxcbconnection.cpp:1343
#4  0x00007efdf2e3eb48 in QThreadPrivate::start (arg=0x114cde0) at thread/qthread_unix.cpp:368
#5  0x00007efdef8c76ba in start_thread (arg=0x7efde4b04700) at pthread_create.c:333
#6  0x00007efdf244282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7efdf61078c0 (LWP 6149)):
[KCrash Handler]
#6  QScopedScopeLevelCounter::QScopedScopeLevelCounter (threadData=0x51, this=<synthetic pointer>) at ../../include/QtCore/5.7.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:304
#7  QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x1d62ae0, event=event@entry=0x7ffd54d30590) at kernel/qcoreapplication.cpp:985
#8  0x00007efdf58015c1 in QCoreApplication::sendEvent (event=0x7ffd54d30590, receiver=0x1d62ae0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:231
#9  QQuickKeysAttached::keyPressed (this=0x4336400, event=0x7ffd54d30590, post=<optimized out>) at items/qquickitem.cpp:1369
#10 0x00007efdf580c863 in QQuickItemPrivate::deliverKeyEvent (this=0x1b12fb0, e=0x7ffd54d30590) at items/qquickitem.cpp:4932
#11 0x00007efdf580caa1 in QQuickItem::event (this=0x427df60, ev=0x7ffd54d30590) at items/qquickitem.cpp:7614
#12 0x00007efdf3f6eecc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x427df60, e=0x7ffd54d30590) at kernel/qapplication.cpp:3799
#13 0x00007efdf3f768c6 in QApplication::notify (this=0x7ffd54d30970, receiver=0x427df60, e=0x7ffd54d30590) at kernel/qapplication.cpp:3556
#14 0x00007efdf300c0c8 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x427df60, event=event@entry=0x7ffd54d30590) at kernel/qcoreapplication.cpp:988
#15 0x00007efdf58015c1 in QCoreApplication::sendEvent (event=0x7ffd54d30590, receiver=0x427df60) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:231
#16 QQuickKeysAttached::keyPressed (this=0x14ea0c0, event=0x7ffd54d30590, post=<optimized out>) at items/qquickitem.cpp:1369
#17 0x00007efdf580c863 in QQuickItemPrivate::deliverKeyEvent (this=0x1562760, e=0x7ffd54d30590) at items/qquickitem.cpp:4932
#18 0x00007efdf580caa1 in QQuickItem::event (this=0x11337c0, ev=0x7ffd54d30590) at items/qquickitem.cpp:7614
#19 0x00007efdf3f6eecc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x11337c0, e=0x7ffd54d30590) at kernel/qapplication.cpp:3799
#20 0x00007efdf3f768c6 in QApplication::notify (this=0x7ffd54d30970, receiver=0x11337c0, e=0x7ffd54d30590) at kernel/qapplication.cpp:3556
#21 0x00007efdf300c0c8 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x11337c0, event=event@entry=0x7ffd54d30590) at kernel/qcoreapplication.cpp:988
#22 0x00007efdf58015c1 in QCoreApplication::sendEvent (event=0x7ffd54d30590, receiver=0x11337c0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:231
#23 QQuickKeysAttached::keyPressed (this=0x16bb830, event=0x7ffd54d30590, post=<optimized out>) at items/qquickitem.cpp:1369
#24 0x00007efdf580c863 in QQuickItemPrivate::deliverKeyEvent (this=0x16b5fa0, e=0x7ffd54d30590) at items/qquickitem.cpp:4932
#25 0x00007efdf580caa1 in QQuickItem::event (this=0x16b3fc0, ev=0x7ffd54d30590) at items/qquickitem.cpp:7614
#26 0x00007efdf3f6eecc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x16b3fc0, e=0x7ffd54d30590) at kernel/qapplication.cpp:3799
#27 0x00007efdf3f768c6 in QApplication::notify (this=0x7ffd54d30970, receiver=0x16b3fc0, e=0x7ffd54d30590) at kernel/qapplication.cpp:3556
#28 0x00007efdf300c0c8 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x16b3fc0, event=event@entry=0x7ffd54d30590) at kernel/qcoreapplication.cpp:988
#29 0x00007efdf58015c1 in QCoreApplication::sendEvent (event=0x7ffd54d30590, receiver=0x16b3fc0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:231
#30 QQuickKeysAttached::keyPressed (this=0x16b6a00, event=0x7ffd54d30590, post=<optimized out>) at items/qquickitem.cpp:1369
#31 0x00007efdf580c863 in QQuickItemPrivate::deliverKeyEvent (this=0x16bf1b0, e=0x7ffd54d30590) at items/qquickitem.cpp:4932
#32 0x00007efdf580caa1 in QQuickItem::event (this=0x16bce90, ev=0x7ffd54d30590) at items/qquickitem.cpp:7614
#33 0x00007efdf3f6eecc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x16bce90, e=0x7ffd54d30590) at kernel/qapplication.cpp:3799
#34 0x00007efdf3f768c6 in QApplication::notify (this=0x7ffd54d30970, receiver=0x16bce90, e=0x7ffd54d30590) at kernel/qapplication.cpp:3556
#35 0x00007efdf300c0c8 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x16bce90, event=event@entry=0x7ffd54d30590) at kernel/qcoreapplication.cpp:988
#36 0x00007efdf581cfe2 in QCoreApplication::sendEvent (event=0x7ffd54d30590, receiver=0x16bce90) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:231
#37 QQuickWindow::sendEvent (this=<optimized out>, item=0x16bce90, e=e@entry=0x7ffd54d30590) at items/qquickwindow.cpp:2734
#38 0x00007efdf581d2bb in QQuickWindowPrivate::deliverKeyEvent (this=this@entry=0x1259f30, e=e@entry=0x7ffd54d30590) at items/qquickwindow.cpp:1572
#39 0x00007efdf581d30f in QQuickWindow::keyPressEvent (this=<optimized out>, e=0x7ffd54d30590) at items/qquickwindow.cpp:1555
#40 0x00007efdf39df735 in QWindow::event (this=this@entry=0x1259ee0, ev=ev@entry=0x7ffd54d30590) at kernel/qwindow.cpp:2133
#41 0x00007efdf5824f15 in QQuickWindow::event (this=0x1259ee0, e=0x7ffd54d30590) at items/qquickwindow.cpp:1546
#42 0x00007efdf3f6eecc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x1259ee0, e=0x7ffd54d30590) at kernel/qapplication.cpp:3799
#43 0x00007efdf3f768c6 in QApplication::notify (this=0x7ffd54d30970, receiver=0x1259ee0, e=0x7ffd54d30590) at kernel/qapplication.cpp:3556
#44 0x00007efdf300c0c8 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x1259ee0, event=event@entry=0x7ffd54d30590) at kernel/qcoreapplication.cpp:988
#45 0x00007efdf39d0088 in QCoreApplication::sendSpontaneousEvent (event=0x7ffd54d30590, receiver=0x1259ee0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#46 QGuiApplicationPrivate::processKeyEvent (e=0x4adacb0) at kernel/qguiapplication.cpp:2016
#47 0x00007efdf39d5485 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x4adacb0) at kernel/qguiapplication.cpp:1693
#48 0x00007efdf39b332b in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:659
#49 0x00007efde7093270 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:76
#50 0x00007efded80c197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007efded80c3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007efded80c49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007efdf305f73f in QEventDispatcherGlib::processEvents (this=0x117d600, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#54 0x00007efdf300a0ba in QEventLoop::exec (this=this@entry=0x7ffd54d30890, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#55 0x00007efdf30126cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1261
#56 0x00007efdf39cb24c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1633
#57 0x00007efdf3f6ee25 in QApplication::exec () at kernel/qapplication.cpp:2975
#58 0x000000000040d601 in main (argc=1, argv=<optimized out>) at /workspace/build/discover/main.cpp:141

Reported using DrKonqi