Bug 284726

Application: amarok (2.4.3)
KDE Platform Version: 4.7.1 (4.7.1)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
Drag and drop audio files into amarok playlist immediately caused amarok crash. Trying to add trax from the same device through "Playlist --> add media" shows empty Folders in the external hdd, although Dolphin displays all the files without problems.

- Unusual behavior I noticed:

- Custom settings of the application:
Just installed Amarok, nearly didn't change settings at all, except for attempts of adding external hdd to collection, which wasn't possible, because amarok stopped after a couple of minutes of reading files.

The crash can be reproduced every time.

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f9faafbb7a0 (LWP 4309))]

Thread 11 (Thread 0x7f9f8becf700 (LWP 4312)):
#0  0x00007f9fa7903773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f9f9fcdb03f in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f9f9fccc45c in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f9f9fcccac9 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f9f9fcccb80 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f9f9fcdafef in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f9f9b39ac78 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.0.so
#7  0x00007f9fa4115efc in start_thread (arg=0x7f9f8becf700) at pthread_create.c:304
#8  0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f9f82555700 (LWP 4314)):
#0  0x00007f9fa26700ff in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f9fa2670dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9fa2671429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9fa8281f3e in QEventDispatcherGlib::processEvents (this=0x1208610, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f9fa8255cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f9fa8255ef7 in QEventLoop::exec (this=0x7f9f82554db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f9fa816d27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f9fa8238cbf in QInotifyFileSystemWatcherEngine::run (this=0x11d7ce0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f9fa816fd05 in QThreadPrivate::start (arg=0x11d7ce0) at thread/qthread_unix.cpp:331
#9  0x00007f9fa4115efc in start_thread (arg=0x7f9f82555700) at pthread_create.c:304
#10 0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f9f7bfff700 (LWP 4317)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9fa81701ab in wait (time=18446744073709551615, this=0x12a56d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1362d10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f9fa56a6864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x120e8a0, th=0x130bb20) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f9fa56a8e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x130bb20) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f9fa56a8e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x130bb20) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f9fa56a7ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f9f7bffee00, parent=0x120e8a0, th=0x130bb20) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f9fa56a7d5b in ThreadWeaver::Thread::run (this=0x130bb20) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f9fa816fd05 in QThreadPrivate::start (arg=0x130bb20) at thread/qthread_unix.cpp:331
#9  0x00007f9fa4115efc in start_thread (arg=0x7f9f7bfff700) at pthread_create.c:304
#10 0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f9f7b7fe700 (LWP 4318)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9fa81701ab in wait (time=18446744073709551615, this=0x12a56d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1362d10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f9fa56a6864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x120e8a0, th=0x1430660) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f9fa56a8e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x1430660) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f9fa56a8e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x1430660) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f9fa56a8e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x1430660) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f9fa56a8e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x1430660) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#8  0x00007f9fa56a7ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f9f7b7fde00, parent=0x120e8a0, th=0x1430660) at ../../../threadweaver/Weaver/Thread.cpp:87
#9  0x00007f9fa56a7d5b in ThreadWeaver::Thread::run (this=0x1430660) at ../../../threadweaver/Weaver/Thread.cpp:142
#10 0x00007f9fa816fd05 in QThreadPrivate::start (arg=0x1430660) at thread/qthread_unix.cpp:331
#11 0x00007f9fa4115efc in start_thread (arg=0x7f9f7b7fe700) at pthread_create.c:304
#12 0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f9f792d9700 (LWP 4319)):
#0  0x00007f9fa7903773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f9fa2670f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9fa2671429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9fa8281f3e in QEventDispatcherGlib::processEvents (this=0x158d740, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f9fa8255cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f9fa8255ef7 in QEventLoop::exec (this=0x7f9f792d8db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f9fa816d27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f9fa8238cbf in QInotifyFileSystemWatcherEngine::run (this=0x1571a70) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f9fa816fd05 in QThreadPrivate::start (arg=0x1571a70) at thread/qthread_unix.cpp:331
#9  0x00007f9fa4115efc in start_thread (arg=0x7f9f792d9700) at pthread_create.c:304
#10 0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f9f788bc700 (LWP 4320)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9fa81701ab in wait (time=18446744073709551615, this=0x12a56d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1362d10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f9fa56a6864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x120e8a0, th=0x15fd680) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f9fa56a8e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x15fd680) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f9fa56a7ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f9f788bbe00, parent=0x120e8a0, th=0x15fd680) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f9fa56a7d5b in ThreadWeaver::Thread::run (this=0x15fd680) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f9fa816fd05 in QThreadPrivate::start (arg=0x15fd680) at thread/qthread_unix.cpp:331
#8  0x00007f9fa4115efc in start_thread (arg=0x7f9f788bc700) at pthread_create.c:304
#9  0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f9f73df4700 (LWP 4321)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9fa81701ab in wait (time=18446744073709551615, this=0x12a56d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1362d10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f9fa56a6864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x120e8a0, th=0x1584630) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f9fa56a8e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x1584630) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f9fa56a8e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x1584630) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f9fa56a8e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a17c0, th=0x1584630) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f9fa56a7ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f9f73df3e00, parent=0x120e8a0, th=0x1584630) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007f9fa56a7d5b in ThreadWeaver::Thread::run (this=0x1584630) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007f9fa816fd05 in QThreadPrivate::start (arg=0x1584630) at thread/qthread_unix.cpp:331
#10 0x00007f9fa4115efc in start_thread (arg=0x7f9f73df4700) at pthread_create.c:304
#11 0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f9f72fb3700 (LWP 4322)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9f9f0cbc2c in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f9f9f0cbd59 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f9fa4115efc in start_thread (arg=0x7f9f72fb3700) at pthread_create.c:304
#4  0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f9f726b2700 (LWP 4323)):
#0  0x00007f9fa7903773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f9fa2670f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9fa2671429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9fa8281f3e in QEventDispatcherGlib::processEvents (this=0x16e66d0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f9fa8255cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f9fa8255ef7 in QEventLoop::exec (this=0x7f9f726b1de0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f9fa816d27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f9fa816fd05 in QThreadPrivate::start (arg=0x16fce40) at thread/qthread_unix.cpp:331
#8  0x00007f9fa4115efc in start_thread (arg=0x7f9f726b2700) at pthread_create.c:304
#9  0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f9f70e24700 (LWP 4326)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9fa46f1fe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f9fa46f2019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f9fa4115efc in start_thread (arg=0x7f9f70e24700) at pthread_create.c:304
#4  0x00007f9fa790f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f9faafbb7a0 (LWP 4309)):
[KCrash Handler]
#6  degas_type_find (tf=0x7fff20aee0b0, private=<optimized out>) at gsttypefindfunctions.c:4026
#7  0x00007f9f9a3c37c3 in gst_type_find_factory_call_function (factory=0x28c13c0, find=0x7fff20aee0b0) at gsttypefindfactory.c:224
#8  0x00007f9f9a659fa6 in gst_type_find_helper_get_range_ext (obj=0xefe510, func=<optimized out>, size=<optimized out>, extension=<optimized out>, prob=0x7fff20aee168) at gsttypefindhelper.c:326
#9  0x00007f9f86e133ee in gst_type_find_element_activate (pad=0x11124c0) at gsttypefindelement.c:961
#10 0x00007f9f9a39a907 in gst_pad_set_active (pad=0x11124c0, active=1) at gstpad.c:708
#11 0x00007f9f9a37a3cb in activate_pads (pad=0x11124c0, ret=0x7fff20aee250, active=<optimized out>) at gstelement.c:2802
#12 0x00007f9f9a38c81e in gst_iterator_fold (it=0x212b840, func=0x7f9f9a37a3b0 <activate_pads>, ret=0x7fff20aee250, user_data=0x7fff20aee2ac) at gstiterator.c:549
#13 0x00007f9f9a37a341 in iterator_activate_fold_with_resync (iter=0x212b840, func=0x7f9f9a37a3b0 <activate_pads>, user_data=0x7fff20aee2ac) at gstelement.c:2834
#14 0x00007f9f9a37c97f in gst_element_pads_activate (element=0xed6160, active=1) at gstelement.c:2878
#15 0x00007f9f9a37cc93 in gst_element_change_state_func (element=0xed6160, transition=<optimized out>) at gstelement.c:2948
#16 0x00007f9f86e13d18 in gst_type_find_element_change_state (element=0xed6160, transition=GST_STATE_CHANGE_READY_TO_PAUSED) at gsttypefindelement.c:1031
#17 0x00007f9f9a37ec7c in gst_element_change_state (element=0xed6160, transition=<optimized out>) at gstelement.c:2718
#18 0x00007f9f9a37f662 in gst_element_set_state_func (element=0xed6160, state=GST_STATE_PAUSED) at gstelement.c:2674
#19 0x00007f9f9a36c43a in gst_bin_element_set_state (next=GST_STATE_PAUSED, current=GST_STATE_READY, start_time=0, base_time=0, element=0xed6160, bin=0x111a000) at gstbin.c:2193
#20 gst_bin_change_state_func (element=0x111a000, transition=GST_STATE_CHANGE_READY_TO_PAUSED) at gstbin.c:2489
#21 0x00007f9f8679d813 in gst_decode_bin_change_state (element=0x111a000, transition=GST_STATE_CHANGE_READY_TO_PAUSED) at gstdecodebin2.c:3678
#22 0x00007f9f9a37ec7c in gst_element_change_state (element=0x111a000, transition=<optimized out>) at gstelement.c:2718
#23 0x00007f9f9a37f662 in gst_element_set_state_func (element=0x111a000, state=GST_STATE_PAUSED) at gstelement.c:2674
#24 0x00007f9f9a36c43a in gst_bin_element_set_state (next=GST_STATE_PAUSED, current=GST_STATE_READY, start_time=0, base_time=0, element=0x111a000, bin=0x11170f0) at gstbin.c:2193
#25 gst_bin_change_state_func (element=0x11170f0, transition=GST_STATE_CHANGE_READY_TO_PAUSED) at gstbin.c:2489
#26 0x00007f9f9a39e748 in gst_pipeline_change_state (element=0x11170f0, transition=<optimized out>) at gstpipeline.c:482
#27 0x00007f9f9a37ec7c in gst_element_change_state (element=0x11170f0, transition=<optimized out>) at gstelement.c:2718
#28 0x00007f9f9a37ecff in gst_element_change_state (element=0x11170f0, transition=<optimized out>) at gstelement.c:2755
#29 0x00007f9f9a37f662 in gst_element_set_state_func (element=0x11170f0, state=GST_STATE_PAUSED) at gstelement.c:2674
#30 0x00007f9f9188a4f9 in Phonon::Gstreamer::MediaObject::beginLoad (this=0x110f670) at ../../gstreamer/mediaobject.cpp:1171
#31 0x00007f9f9189083b in Phonon::Gstreamer::MediaObject::setSource (this=0x110f670, source=...) at ../../gstreamer/mediaobject.cpp:1166
#32 0x00007f9fa4f47e9b in Phonon::MediaObject::setCurrentSource (this=0xcd3440, newSource=...) at ../../phonon/mediaobject.cpp:261
#33 0x00007f9fa9fb9ba0 in EngineController::playUrl (this=0xcda710, url=..., offset=0) at ../../src/EngineController.cpp:526
#34 0x00007f9fa9fbb3e2 in EngineController::play (this=0xcda710, track=<optimized out>, offset=0) at ../../src/EngineController.cpp:428
#35 0x00007f9fa9c70d76 in Playlist::Actions::play (this=<optimized out>, trackid=9034206663766998957, now=<optimized out>) at ../../src/playlist/PlaylistActions.cpp:222
#36 0x00007f9fa9c72abd in Playlist::Actions::play (this=0x142f650) at ../../src/playlist/PlaylistActions.cpp:189
#37 0x00007f9fa9fbbabd in EngineController::play (this=0xcda710) at ../../src/EngineController.cpp:374
#38 0x00007f9fa9fbbced in EngineController::playPause (this=0xcda710) at ../../src/EngineController.cpp:641
#39 0x00007f9fa9fc3cc1 in EngineController::qt_metacall (this=0xcda710, _c=QMetaObject::InvokeMetaMethod, _id=22, _a=0x7fff20aef630) at ./EngineController.moc:182
#40 0x00007f9fa8269eba in QMetaObject::activate (sender=0x1486a30, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff20aef630) at kernel/qobject.cpp:3278
#41 0x00007f9faa0e70df in PlayPauseButton::toggled (this=<optimized out>, _t1=true) at ./PlayPauseButton.moc:89
#42 0x00007f9faa0e7181 in PlayPauseButton::qt_metacall (this=0x1486a30, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff20aef6c0) at ./PlayPauseButton.moc:77
#43 0x00007f9fa8269eba in QMetaObject::activate (sender=0x1486a30, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3278
#44 0x00007f9faa0e03f5 in IconButton::mouseReleaseEvent (this=0x1486a30, me=<optimized out>) at ../../src/widgets/IconButton.cpp:69
#45 0x00007f9fa8ca7c9a in QWidget::event (this=0x1486a30, event=0x7fff20aefdc0) at kernel/qwidget.cpp:8295
#46 0x00007f9fa8c57424 in notify_helper (e=0x7fff20aefdc0, receiver=0x1486a30, this=0xb8b0c0) at kernel/qapplication.cpp:4486
#47 QApplicationPrivate::notify_helper (this=0xb8b0c0, receiver=0x1486a30, e=0x7fff20aefdc0) at kernel/qapplication.cpp:4458
#48 0x00007f9fa8c5cc6b in QApplication::notify (this=<optimized out>, receiver=0x1486a30, e=0x7fff20aefdc0) at kernel/qapplication.cpp:4047
#49 0x00007f9faa9b81e6 in KApplication::notify (this=0x7fff20af0a20, receiver=0x1486a30, event=0x7fff20aefdc0) at ../../kdeui/kernel/kapplication.cpp:311
#50 0x00007f9fa8256afc in QCoreApplication::notifyInternal (this=0x7fff20af0a20, receiver=0x1486a30, event=0x7fff20aefdc0) at kernel/qcoreapplication.cpp:787
#51 0x00007f9fa8c583f2 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#52 QApplicationPrivate::sendMouseEvent (receiver=0x1486a30, event=0x7fff20aefdc0, alienWidget=0x1486a30, nativeWidget=0x14974b0, buttonDown=0x1486a30, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3146
#53 0x00007f9fa8cd7945 in QETWidget::translateMouseEvent (this=0x14974b0, event=<optimized out>) at kernel/qapplication_x11.cpp:4568
#54 0x00007f9fa8cd68be in QApplication::x11ProcessEvent (this=0x7fff20af0a20, event=0x7fff20af05e0) at kernel/qapplication_x11.cpp:3690
#55 0x00007f9fa8cff412 in x11EventSourceDispatch (s=0xb6da60, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#56 0x00007f9fa2670a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#57 0x00007f9fa2671258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007f9fa2671429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007f9fa8281ed6 in QEventDispatcherGlib::processEvents (this=0x9f6f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#60 0x00007f9fa8cff07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#61 0x00007f9fa8255cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#62 0x00007f9fa8255ef7 in QEventLoop::exec (this=0x7fff20af09b0, flags=...) at kernel/qeventloop.cpp:201
#63 0x00007f9fa825a789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#64 0x000000000040916e in main (argc=1, argv=0x7fff20af3028) at ../../src/main.cpp:289

Reported using DrKonqi