Bug 326670

Application: muon-discover (2.0.65)
KDE Platform Version: 4.11.2
Qt Version: 4.8.4
Operating System: Linux 3.11.0-12-generic i686
Distribution: Ubuntu 13.10

-- Information about the crash:
I was just looking for a gdrive client

The crash can be reproduced every time.

-- Backtrace:
Application: Muon Discover (muon-discover), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb152e740 (LWP 1882))]

Thread 7 (Thread 0xaef91b40 (LWP 1883)):
#0  0xb777c424 in __kernel_vsyscall ()
#1  0xb259584b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb5ab49bc in __pthread_cond_wait (cond=0xb36478d0, mutex=0xb36478b8) at forward.c:149
#3  0xb3544ef2 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3544f3f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2591d78 in start_thread (arg=0xaef91b40) at pthread_create.c:311
#6  0xb5aa701e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 6 (Thread 0xae182b40 (LWP 1884)):
#0  0xb777c424 in __kernel_vsyscall ()
#1  0xb5a97a0b in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb24c2a3b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb24b3b58 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb24b3c98 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb5df78df in QEventDispatcherGlib::processEvents (this=0xad800468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb5dc69f3 in QEventLoop::processEvents (this=this@entry=0xae182228, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5dc6d19 in QEventLoop::exec (this=this@entry=0xae182228, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5cb5e3d in QThread::exec (this=this@entry=0x974e2b0) at thread/qthread.cpp:542
#9  0xb5da6e14 in QInotifyFileSystemWatcherEngine::run (this=0x974e2b0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0xb5cb872f in QThreadPrivate::start (arg=0x974e2b0) at thread/qthread_unix.cpp:338
#11 0xb2591d78 in start_thread (arg=0xae182b40) at pthread_create.c:311
#12 0xb5aa701e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 5 (Thread 0xa8639b40 (LWP 1885)):
#0  __pthread_mutex_unlock_usercnt (mutex=0xa7d00558, decr=1) at pthread_mutex_unlock.c:58
#1  0xb5ab4c04 in pthread_mutex_unlock (mutex=0xa7d00558) at forward.c:194
#2  0xb24f6be0 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb24b31a7 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb24b3a4f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb24b3c98 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb5df78df in QEventDispatcherGlib::processEvents (this=0xa7d00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb5dc69f3 in QEventLoop::processEvents (this=this@entry=0xa8639258, flags=...) at kernel/qeventloop.cpp:149
#8  0xb5dc6d19 in QEventLoop::exec (this=this@entry=0xa8639258, flags=...) at kernel/qeventloop.cpp:204
#9  0xb5cb5e3d in QThread::exec (this=this@entry=0x9ca8518) at thread/qthread.cpp:542
#10 0xb5cb5f8b in QThread::run (this=0x9ca8518) at thread/qthread.cpp:609
#11 0xb5cb872f in QThreadPrivate::start (arg=0x9ca8518) at thread/qthread_unix.cpp:338
#12 0xb2591d78 in start_thread (arg=0xa8639b40) at pthread_create.c:311
#13 0xb5aa701e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 4 (Thread 0xa7a8eb40 (LWP 1886)):
#0  0xb777c424 in __kernel_vsyscall ()
#1  0xb5aba4d2 in clock_gettime (clock_id=1, tp=0xa7a8e018) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb5d133ec in do_gettime (frac=0xa7a8e010, sec=0xa7a8e008) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0xb5df8fd2 in updateCurrentTime (this=0xa7102074) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0xa7102074, tm=...) at kernel/qeventdispatcher_unix.cpp:461
#6  0xb5df767b in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa7a8e0ec) at kernel/qeventdispatcher_glib.cpp:136
#7  0xb24b3133 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb24b3a4f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb24b3c98 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb5df78df in QEventDispatcherGlib::processEvents (this=0xa7100468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#11 0xb5dc69f3 in QEventLoop::processEvents (this=this@entry=0xa7a8e258, flags=...) at kernel/qeventloop.cpp:149
#12 0xb5dc6d19 in QEventLoop::exec (this=this@entry=0xa7a8e258, flags=...) at kernel/qeventloop.cpp:204
#13 0xb5cb5e3d in QThread::exec (this=this@entry=0x9d01450) at thread/qthread.cpp:542
#14 0xb5cb5f8b in QThread::run (this=0x9d01450) at thread/qthread.cpp:609
#15 0xb5cb872f in QThreadPrivate::start (arg=0x9d01450) at thread/qthread_unix.cpp:338
#16 0xb2591d78 in start_thread (arg=0xa7a8eb40) at pthread_create.c:311
#17 0xb5aa701e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 3 (Thread 0xa281ab40 (LWP 2967)):
#0  0xb24b3c9b in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb5df78df in QEventDispatcherGlib::processEvents (this=0xa1766ed8, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#2  0xb5dc69f3 in QEventLoop::processEvents (this=this@entry=0xa281a248, flags=...) at kernel/qeventloop.cpp:149
#3  0xb5dc6d19 in QEventLoop::exec (this=this@entry=0xa281a248, flags=...) at kernel/qeventloop.cpp:204
#4  0xb5cb5e3d in QThread::exec (this=this@entry=0xc25e300) at thread/qthread.cpp:542
#5  0xb7171aee in QDeclarativePixmapReader::run (this=0xc25e300) at util/qdeclarativepixmapcache.cpp:576
#6  0xb5cb872f in QThreadPrivate::start (arg=0xc25e300) at thread/qthread_unix.cpp:338
#7  0xb2591d78 in start_thread (arg=0xa281ab40) at pthread_create.c:311
#8  0xb5aa701e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 2 (Thread 0xa70ffb40 (LWP 2968)):
#0  0xb24f70e3 in g_private_get () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb24da1ae in g_thread_self () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb24b3c86 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb5df78df in QEventDispatcherGlib::processEvents (this=0xa6702118, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0xb5dc69f3 in QEventLoop::processEvents (this=this@entry=0xa70ff258, flags=...) at kernel/qeventloop.cpp:149
#5  0xb5dc6d19 in QEventLoop::exec (this=this@entry=0xa70ff258, flags=...) at kernel/qeventloop.cpp:204
#6  0xb5cb5e3d in QThread::exec (this=this@entry=0xa178b768) at thread/qthread.cpp:542
#7  0xb5cb5f8b in QThread::run (this=0xa178b768) at thread/qthread.cpp:609
#8  0xb5cb872f in QThreadPrivate::start (arg=0xa178b768) at thread/qthread_unix.cpp:338
#9  0xb2591d78 in start_thread (arg=0xa70ffb40) at pthread_create.c:311
#10 0xb5aa701e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 1 (Thread 0xb152e740 (LWP 1882)):
[KCrash Handler]
#7  0xb359f818 in QScriptValue::toVariant() const () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#8  0xb722ed34 in QDeclarativeEnginePrivate::scriptValueToVariant (this=this@entry=0x9712b70, val=..., hint=hint@entry=510) at qml/qdeclarativeengine.cpp:2156
#9  0xb723998c in QDeclarativeExpressionPrivate::value (this=0xc170a10, secondaryScope=0xbb52cc0, isUndefined=isUndefined@entry=0x0) at qml/qdeclarativeexpression.cpp:667
#10 0xb727487f in QDeclarativeBoundSignal::qt_metacall (this=0xb6c0b98, c=QMetaObject::InvokeMetaMethod, id=5, a=0xbfae8cd8) at qml/qdeclarativeboundsignal.cpp:199
#11 0xb5dcee35 in QMetaObject::metacall (object=object@entry=0xb6c0b98, cl=cl@entry=QMetaObject::InvokeMetaMethod, idx=5, argv=0xbfae8cd8) at kernel/qmetaobject.cpp:245
#12 0xb5ddd2dd in QMetaObject::activate (sender=sender@entry=0xc152990, m=m@entry=0xb7430e1c <QDeclarativeMouseArea::staticMetaObject>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0xbfae8cd8) at kernel/qobject.cpp:3558
#13 0xb733bdc5 in QDeclarativeMouseArea::clicked (this=this@entry=0xc152990, _t1=_t1@entry=0xbfae8d20) at .moc/release-shared/moc_qdeclarativemousearea_p.cpp:523
#14 0xb71d38de in QDeclarativeMouseArea::setPressed (this=this@entry=0xc152990, p=p@entry=false) at graphicsitems/qdeclarativemousearea.cpp:936
#15 0xb71d4a84 in QDeclarativeMouseArea::mouseReleaseEvent (this=0xc152990, event=0xbfae9270) at graphicsitems/qdeclarativemousearea.cpp:586
#16 0xb696f222 in QGraphicsItem::sceneEvent (this=this@entry=0xc152998, event=event@entry=0xbfae9270) at graphicsview/qgraphicsitem.cpp:6742
#17 0xb71c6786 in QDeclarativeItem::sceneEvent (this=this@entry=0xc152990, event=event@entry=0xbfae9270) at graphicsitems/qdeclarativeitem.cpp:3049
#18 0xb71d5345 in QDeclarativeMouseArea::sceneEvent (this=0xc152990, event=0xbfae9270) at graphicsitems/qdeclarativemousearea.cpp:681
#19 0xb6998b76 in QGraphicsScenePrivate::sendEvent (this=0x974c080, item=0xc152998, event=0xbfae9270) at graphicsview/qgraphicsscene.cpp:1221
#20 0xb69990b6 in QGraphicsScenePrivate::sendMouseEvent (this=0x974c080, mouseEvent=0xbfae9270) at graphicsview/qgraphicsscene.cpp:1295
#21 0xb69a11ae in QGraphicsScene::mouseReleaseEvent (this=this@entry=0x974ab98, mouseEvent=mouseEvent@entry=0xbfae9270) at graphicsview/qgraphicsscene.cpp:4128
#22 0xb71234ff in QDeclarativeScene::mouseReleaseEvent (this=0x974ab98, e=0xbfae9270) at util/qdeclarativeview.cpp:127
#23 0xb69adf2f in QGraphicsScene::event (this=0x974ab98, event=0xbfae9270) at graphicsview/qgraphicsscene.cpp:3458
#24 0xb6324744 in QApplicationPrivate::notify_helper (this=0x961a370, receiver=0x974ab98, e=0xbfae9270) at kernel/qapplication.cpp:4567
#25 0xb632b223 in QApplication::notify (this=0xbfae9cf0, receiver=receiver@entry=0x974ab98, e=e@entry=0xbfae9270) at kernel/qapplication.cpp:4353
#26 0xb6e71ff4 in KApplication::notify (this=0xbfae9cf0, receiver=0x974ab98, event=0xbfae9270) at ../../kdeui/kernel/kapplication.cpp:311
#27 0xb5dc7eda in QCoreApplication::notifyInternal (this=0xbfae9cf0, receiver=receiver@entry=0x974ab98, event=event@entry=0xbfae9270) at kernel/qcoreapplication.cpp:946
#28 0xb6322bcd in sendSpontaneousEvent (event=0xbfae9270, receiver=0x974ab98) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#29 qt_sendSpontaneousEvent (receiver=0x974ab98, event=event@entry=0xbfae9270) at kernel/qapplication.cpp:5565
#30 0xb69c7a72 in QGraphicsView::mouseReleaseEvent (this=0x970fdf0, event=0xbfae9764) at graphicsview/qgraphicsview.cpp:3338
#31 0xb637e1aa in QWidget::event (this=this@entry=0x970fdf0, event=event@entry=0xbfae9764) at kernel/qwidget.cpp:8375
#32 0xb6782fcc in QFrame::event (this=this@entry=0x970fdf0, e=e@entry=0xbfae9764) at widgets/qframe.cpp:557
#33 0xb6811318 in QAbstractScrollArea::viewportEvent (this=this@entry=0x970fdf0, e=e@entry=0xbfae9764) at widgets/qabstractscrollarea.cpp:1043
#34 0xb69c8627 in QGraphicsView::viewportEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsview.cpp:2866
#35 0xb6811596 in viewportEvent (event=0xbfae9764, this=<optimized out>) at widgets/qabstractscrollarea_p.h:100
#36 QAbstractScrollAreaFilter::eventFilter (this=0x97111f8, o=0x97128e8, e=0xbfae9764) at widgets/qabstractscrollarea_p.h:116
#37 0xb5dc804e in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x961a370, receiver=receiver@entry=0x97128e8, event=event@entry=0xbfae9764) at kernel/qcoreapplication.cpp:1056
#38 0xb6324721 in QApplicationPrivate::notify_helper (this=0x961a370, receiver=receiver@entry=0x97128e8, e=0xbfae9764) at kernel/qapplication.cpp:4563
#39 0xb632cdf8 in QApplication::notify (this=0xbfae9cf0, receiver=receiver@entry=0x97128e8, e=e@entry=0xbfae9764) at kernel/qapplication.cpp:4110
#40 0xb6e71ff4 in KApplication::notify (this=0xbfae9cf0, receiver=0x97128e8, event=0xbfae9764) at ../../kdeui/kernel/kapplication.cpp:311
#41 0xb5dc7eda in QCoreApplication::notifyInternal (this=0xbfae9cf0, receiver=receiver@entry=0x97128e8, event=event@entry=0xbfae9764) at kernel/qcoreapplication.cpp:946
#42 0xb632aaa3 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#43 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x97128e8, event=0xbfae9764, alienWidget=0x97128e8, nativeWidget=0x970fdf0, buttonDown=buttonDown@entry=0xb6c99cc4 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#44 0xb63ae4e8 in QETWidget::translateMouseEvent (this=0x970fdf0, event=event@entry=0xbfae998c) at kernel/qapplication_x11.cpp:4631
#45 0xb63adc05 in QApplication::x11ProcessEvent (this=0xbfae9cf0, event=event@entry=0xbfae998c) at kernel/qapplication_x11.cpp:3624
#46 0xb63d9274 in x11EventSourceDispatch (s=0x961b6c8, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#47 0xb24b382e in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#48 0xb24b3bd8 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#49 0xb24b3c98 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#50 0xb5df78bf in QEventDispatcherGlib::processEvents (this=this@entry=0x9618bc8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#51 0xb63d932e in QGuiEventDispatcherGlib::processEvents (this=0x9618bc8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#52 0xb5dc69f3 in QEventLoop::processEvents (this=this@entry=0xbfae9c48, flags=...) at kernel/qeventloop.cpp:149
#53 0xb5dc6d19 in QEventLoop::exec (this=this@entry=0xbfae9c48, flags=...) at kernel/qeventloop.cpp:204
#54 0xb5dcc89e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#55 0xb6322974 in QApplication::exec () at kernel/qapplication.cpp:3828
#56 0x08050dbb in main (argc=1, argv=0xbfae9dd4) at /build/buildd/muon-2.0.65+git20131008/discover/main.cpp:86

Possible duplicates by query: bug 326215.

Reported using DrKonqi