Application: plasma-desktop (4.11.2)
KDE Platform Version: 4.11.2
Qt Version: 4.8.4
Operating System: Linux 3.11.0-12-generic x86_64
Distribution: Ubuntu 13.10

-- Information about the crash:
Right click in taskbar made it crash.
The selected item was a dolphin window if that matters.
The crash is very rare.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe6bdc147c0 (LWP 1679))]

Thread 8 (Thread 0x7fe69ec21700 (LWP 1683)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe6b68b006b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fe6b68b00a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fe6b0f6af6e in start_thread (arg=0x7fe69ec21700) at pthread_create.c:311
#4  0x00007fe6bd4fd9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 7 (Thread 0x7fe613ae7700 (LWP 1684)):
#0  0x00007fffcbbfea2f in clock_gettime ()
#1  0x00007fe6bd51296d in clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fe6b9ff1757 in do_gettime (frac=0x7fe613ae6b00, sec=0x7fe613ae6af8) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007fe6ba0cafe5 in updateCurrentTime (this=0x7fe60c002860) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0x7fe60c002860, tm=...) at kernel/qeventdispatcher_unix.cpp:461
#6  0x00007fe6ba0c982c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7fe613ae6bb4) at kernel/qeventdispatcher_glib.cpp:136
#7  0x00007fe6ba0c98d5 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007fe6b085fd4d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fe6b08605c3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fe6b08607ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fe6ba0c9a76 in QEventDispatcherGlib::processEvents (this=0x7fe60c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0x00007fe6ba09b5ef in QEventLoop::processEvents (this=this@entry=0x7fe613ae6d70, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007fe6ba09b8e5 in QEventLoop::exec (this=this@entry=0x7fe613ae6d70, flags=...) at kernel/qeventloop.cpp:204
#14 0x00007fe6b9f9a88f in QThread::exec (this=this@entry=0x21fde30) at thread/qthread.cpp:542
#15 0x00007fe6ba07cd13 in QInotifyFileSystemWatcherEngine::run (this=0x21fde30) at io/qfilesystemwatcher_inotify.cpp:265
#16 0x00007fe6b9f9cf2f in QThreadPrivate::start (arg=0x21fde30) at thread/qthread_unix.cpp:338
#17 0x00007fe6b0f6af6e in start_thread (arg=0x7fe613ae7700) at pthread_create.c:311
#18 0x00007fe6bd4fd9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 6 (Thread 0x7fe612655700 (LWP 1686)):
#0  0x00007fe6bd4f0f7d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe6b08606a4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe6b08607ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe6ba0c9a76 in QEventDispatcherGlib::processEvents (this=0x7fe6040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fe6ba09b5ef in QEventLoop::processEvents (this=this@entry=0x7fe612654d70, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fe6ba09b8e5 in QEventLoop::exec (this=this@entry=0x7fe612654d70, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fe6b9f9a88f in QThread::exec (this=this@entry=0x22a7b00) at thread/qthread.cpp:542
#7  0x00007fe6ba07cd13 in QInotifyFileSystemWatcherEngine::run (this=0x22a7b00) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007fe6b9f9cf2f in QThreadPrivate::start (arg=0x22a7b00) at thread/qthread_unix.cpp:338
#9  0x00007fe6b0f6af6e in start_thread (arg=0x7fe612655700) at pthread_create.c:311
#10 0x00007fe6bd4fd9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7fe60a18a700 (LWP 3401)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe6b9f9d406 in wait (time=18446744073709551615, this=0x2270fb0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x2354e08, mutex=0x22562a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe6b5b2ae6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2354de0, th=0x2f0bce0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe6b5b2d903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2256500, th=0x2f0bce0, previous=0x4627980) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe6b5b2c61f in ThreadWeaver::Thread::run (this=0x2f0bce0) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fe6b9f9cf2f in QThreadPrivate::start (arg=0x2f0bce0) at thread/qthread_unix.cpp:338
#7  0x00007fe6b0f6af6e in start_thread (arg=0x7fe60a18a700) at pthread_create.c:311
#8  0x00007fe6bd4fd9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7fe5fd755700 (LWP 3402)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe6b9f9d406 in wait (time=18446744073709551615, this=0x2270fb0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x2354e08, mutex=0x22562a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe6b5b2ae6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2354de0, th=0x57731f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe6b5b2d903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2256500, th=0x57731f0, previous=0x3e2c3e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe6b5b2c61f in ThreadWeaver::Thread::run (this=0x57731f0) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fe6b9f9cf2f in QThreadPrivate::start (arg=0x57731f0) at thread/qthread_unix.cpp:338
#7  0x00007fe6b0f6af6e in start_thread (arg=0x7fe5fd755700) at pthread_create.c:311
#8  0x00007fe6bd4fd9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7fe5fcf54700 (LWP 3403)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe6b9f9d406 in wait (time=18446744073709551615, this=0x2270fb0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x2354e08, mutex=0x22562a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe6b5b2ae6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2354de0, th=0x4068790) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe6b5b2d903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2256500, th=0x4068790, previous=0x5753780) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe6b5b2c61f in ThreadWeaver::Thread::run (this=0x4068790) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fe6b9f9cf2f in QThreadPrivate::start (arg=0x4068790) at thread/qthread_unix.cpp:338
#7  0x00007fe6b0f6af6e in start_thread (arg=0x7fe5fcf54700) at pthread_create.c:311
#8  0x00007fe6bd4fd9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7fe5f7fff700 (LWP 3404)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe6b9f9d406 in wait (time=18446744073709551615, this=0x2270fb0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x2354e08, mutex=0x22562a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe6b5b2ae6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2354de0, th=0x485aa10) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe6b5b2d903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2256500, th=0x485aa10, previous=0x5763b80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe6b5b2c61f in ThreadWeaver::Thread::run (this=0x485aa10) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fe6b9f9cf2f in QThreadPrivate::start (arg=0x485aa10) at thread/qthread_unix.cpp:338
#7  0x00007fe6b0f6af6e in start_thread (arg=0x7fe5f7fff700) at pthread_create.c:311
#8  0x00007fe6bd4fd9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7fe6bdc147c0 (LWP 1679)):
[KCrash Handler]
#6  QDeclarativeExpression::hasError (this=0x39003900390032) at qml/qdeclarativeexpression.cpp:769
#7  0x00007fe6bbd3954b in QDeclarativeBoundSignal::qt_metacall (this=0x5848b90, c=<optimized out>, id=<optimized out>, a=0x7fffcbbdc1c0) at qml/qdeclarativeboundsignal.cpp:200
#8  0x00007fe6ba0b0c52 in QMetaObject::activate (sender=0x45899c0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffcbbdc1c0) at kernel/qobject.cpp:3558
#9  0x00007fe61cfa6780 in ?? () from /usr/lib/kde4/imports/org/kde/qtextracomponents/libqtextracomponentsplugin.so
#10 0x00007fe6b9a04fd5 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0x175a4d0, item=item@entry=0x45c6d20, event=event@entry=0x7fffcbbdc6f0) at graphicsview/qgraphicsscene.cpp:1159
#11 0x00007fe6b9a0963e in QGraphicsScenePrivate::sendEvent (this=0x175a4d0, item=0x45c6d20, event=0x7fffcbbdc6f0) at graphicsview/qgraphicsscene.cpp:1211
#12 0x00007fe6b9a09b3f in QGraphicsScenePrivate::sendMouseEvent (this=0x175a4d0, mouseEvent=0x7fffcbbdc6f0) at graphicsview/qgraphicsscene.cpp:1295
#13 0x00007fe6b9a153b6 in QGraphicsScenePrivate::mousePressEventHandler (this=this@entry=0x175a4d0, mouseEvent=mouseEvent@entry=0x7fffcbbdc6f0) at graphicsview/qgraphicsscene.cpp:1422
#14 0x00007fe6b9a15849 in QGraphicsScene::mousePressEvent (this=<optimized out>, mouseEvent=0x7fffcbbdc6f0) at graphicsview/qgraphicsscene.cpp:4074
#15 0x00007fe6b9a1e6d0 in QGraphicsScene::event (this=0x1858850, event=0x7fffcbbdc6f0) at graphicsview/qgraphicsscene.cpp:3455
#16 0x00007fe6b9439dfc in QApplicationPrivate::notify_helper (this=this@entry=0x16a9480, receiver=receiver@entry=0x1858850, e=e@entry=0x7fffcbbdc6f0) at kernel/qapplication.cpp:4567
#17 0x00007fe6b9440470 in QApplication::notify (this=this@entry=0x16a4260, receiver=receiver@entry=0x1858850, e=e@entry=0x7fffcbbdc6f0) at kernel/qapplication.cpp:4353
#18 0x00007fe6bad60a6a in KApplication::notify (this=0x16a4260, receiver=0x1858850, event=0x7fffcbbdc6f0) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x00007fe6ba09c8bd in QCoreApplication::notifyInternal (this=0x16a4260, receiver=0x1858850, event=event@entry=0x7fffcbbdc6f0) at kernel/qcoreapplication.cpp:946
#20 0x00007fe6b9438526 in sendSpontaneousEvent (event=event@entry=0x7fffcbbdc6f0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#21 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fffcbbdc6f0) at kernel/qapplication.cpp:5565
#22 0x00007fe6b9a350af in QGraphicsView::mousePressEvent (this=0x350c540, event=0x7fffcbbdcc60) at graphicsview/qgraphicsview.cpp:3164
#23 0x00007fe6b9489191 in QWidget::event (this=this@entry=0x350c540, event=event@entry=0x7fffcbbdcc60) at kernel/qwidget.cpp:8371
#24 0x00007fe6b982a5be in QFrame::event (this=0x350c540, e=0x7fffcbbdcc60) at widgets/qframe.cpp:557
#25 0x00007fe6b9a35e09 in QGraphicsView::viewportEvent (this=0x350c540, event=0x7fffcbbdcc60) at graphicsview/qgraphicsview.cpp:2866
#26 0x00007fe6ba09ca26 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x16a9480, receiver=receiver@entry=0x350f630, event=event@entry=0x7fffcbbdcc60) at kernel/qcoreapplication.cpp:1056
#27 0x00007fe6b9439ddc in QApplicationPrivate::notify_helper (this=this@entry=0x16a9480, receiver=receiver@entry=0x350f630, e=e@entry=0x7fffcbbdcc60) at kernel/qapplication.cpp:4563
#28 0x00007fe6b94405ad in QApplication::notify (this=this@entry=0x16a4260, receiver=receiver@entry=0x350f630, e=e@entry=0x7fffcbbdcc60) at kernel/qapplication.cpp:4110
#29 0x00007fe6bad60a6a in KApplication::notify (this=0x16a4260, receiver=0x350f630, event=0x7fffcbbdcc60) at ../../kdeui/kernel/kapplication.cpp:311
#30 0x00007fe6ba09c8bd in QCoreApplication::notifyInternal (this=0x16a4260, receiver=receiver@entry=0x350f630, event=event@entry=0x7fffcbbdcc60) at kernel/qcoreapplication.cpp:946
#31 0x00007fe6b943fd63 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#32 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x350f630, event=event@entry=0x7fffcbbdcc60, alienWidget=alienWidget@entry=0x350f630, nativeWidget=nativeWidget@entry=0x350c540, buttonDown=buttonDown@entry=0x7fe6b9f1e2f8 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#33 0x00007fe6b94b47db in QETWidget::translateMouseEvent (this=this@entry=0x350c540, event=event@entry=0x7fffcbbdcfe0) at kernel/qapplication_x11.cpp:4631
#34 0x00007fe6b94b4079 in QApplication::x11ProcessEvent (this=0x16a4260, event=event@entry=0x7fffcbbdcfe0) at kernel/qapplication_x11.cpp:3624
#35 0x00007fe6b94db922 in x11EventSourceDispatch (s=0x16ab470, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#36 0x00007fe6b08603b6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fe6b0860708 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fe6b08607ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007fe6ba0c9a55 in QEventDispatcherGlib::processEvents (this=0x16a79f0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#40 0x00007fe6b94db9d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#41 0x00007fe6ba09b5ef in QEventLoop::processEvents (this=this@entry=0x7fffcbbdd3c0, flags=...) at kernel/qeventloop.cpp:149
#42 0x00007fe6ba09b8e5 in QEventLoop::exec (this=this@entry=0x7fffcbbdd3c0, flags=...) at kernel/qeventloop.cpp:204
#43 0x00007fe6ba0a0e5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#44 0x00007fe6bd80727c in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#45 0x00007fe6bd424de5 in __libc_start_main (main=0x4006e0, argc=1, ubp_av=0x7fffcbbdd618, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcbbdd608) at libc-start.c:260
#46 0x000000000040070e in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 321658.

Possible duplicates by query: bug 325417, bug 321658.

Reported using DrKonqi