Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.13.0-37-generic x86_64
Distribution: Linux Mint 17.1 Rebecca

-- Information about the crash:
- What I was doing when the application crashed:
Opened "Add Widgets..." menu and tried to drag and drop "Icon-Only Task Manager" to the only panel at the bottom of the screen.
System is a fresh install. Only updates and "bumblebee" were installed. I have a laptop cursed with "Nvidia Optimus", that's why bumblebee is installed.
After crashing, the panel accepts more widgets without any problems.

-- 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 0x7f71106ce7c0 (LWP 2198))]

Thread 5 (Thread 0x7f70e6b7c700 (LWP 2203)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f710937dffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f710937e039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f7103ef4182 in start_thread (arg=0x7f70e6b7c700) at pthread_create.c:312
#4  0x00007f710ffbf47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f70612cb700 (LWP 2205)):
#0  0x00007f710ffcd066 in pthread_mutex_unlock (mutex=0x7f705c000a60) at forward.c:194
#1  0x00007f71038249b1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f71037e2a20 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f71037e2f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f71037e30ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f710cb937be in QEventDispatcherGlib::processEvents (this=0x7f705c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f710cb650af in QEventLoop::processEvents (this=this@entry=0x7f70612cade0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f710cb653a5 in QEventLoop::exec (this=this@entry=0x7f70612cade0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f710ca61c5f in QThread::exec (this=this@entry=0x1a27340) at thread/qthread.cpp:537
#9  0x00007f710cb46823 in QInotifyFileSystemWatcherEngine::run (this=0x1a27340) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f710ca6432f in QThreadPrivate::start (arg=0x1a27340) at thread/qthread_unix.cpp:349
#11 0x00007f7103ef4182 in start_thread (arg=0x7f70612cb700) at pthread_create.c:312
#12 0x00007f710ffbf47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f705ac24700 (LWP 2207)):
#0  __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7f705400dc60) at pthread_mutex_unlock.c:51
#1  __GI___pthread_mutex_unlock (mutex=0x7f705400dc60) at pthread_mutex_unlock.c:310
#2  0x00007f71038249b1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f71037e2e9d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f71037e330a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f705b720336 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007f7103807f05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f7103ef4182 in start_thread (arg=0x7f705ac24700) at pthread_create.c:312
#8  0x00007f710ffbf47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f7059dab700 (LWP 2208)):
#0  0x00007f710ffb212d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f71037e2fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f71037e30ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f710cb937be in QEventDispatcherGlib::processEvents (this=0x7f70500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007f710cb650af in QEventLoop::processEvents (this=this@entry=0x7f7059daade0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f710cb653a5 in QEventLoop::exec (this=this@entry=0x7f7059daade0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f710ca61c5f in QThread::exec (this=this@entry=0x12dad60) at thread/qthread.cpp:537
#7  0x00007f710cb46823 in QInotifyFileSystemWatcherEngine::run (this=0x12dad60) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f710ca6432f in QThreadPrivate::start (arg=0x12dad60) at thread/qthread_unix.cpp:349
#9  0x00007f7103ef4182 in start_thread (arg=0x7f7059dab700) at pthread_create.c:312
#10 0x00007f710ffbf47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f71106ce7c0 (LWP 2198)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f70658185c0 in DeclarativeMimeData::DeclarativeMimeData (this=0x7fffc6436a00, copy=0x542d360) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeMimeData.cpp:50
#8  0x00007f7065817db1 in DeclarativeDragDropEvent::DeclarativeDragDropEvent (this=0x7fffc64369e0, e=0x7fffc6436e10, parent=0x15d24e0) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragDropEvent.cpp:33
#9  0x00007f7065817ea4 in DeclarativeDropArea::dragLeaveEvent (this=0x15d24e0, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDropArea.cpp:44
#10 0x00007f710c4a9702 in QGraphicsItem::sceneEvent (this=this@entry=0x15d24f0, event=event@entry=0x7fffc6436e10) at graphicsview/qgraphicsitem.cpp:6734
#11 0x00007f710e7617c4 in QDeclarativeItem::sceneEvent (this=0x15d24e0, event=0x7fffc6436e10) at graphicsitems/qdeclarativeitem.cpp:3081
#12 0x00007f710c4d01c7 in QGraphicsScenePrivate::sendDragDropEvent (this=this@entry=0x11d9910, item=0x15d24f0, dragDropEvent=0x7fffc6436e10) at graphicsview/qgraphicsscene.cpp:1250
#13 0x00007f710c4d01ff in QGraphicsScene::dragLeaveEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsscene.cpp:3738
#14 0x00007f710c4e51f0 in QGraphicsScene::event (this=0x127e840, event=0x7fffc6436e10) at graphicsview/qgraphicsscene.cpp:3406
#15 0x00007f710beffe2c in QApplicationPrivate::notify_helper (this=this@entry=0x10ad690, receiver=receiver@entry=0x127e840, e=e@entry=0x7fffc6436e10) at kernel/qapplication.cpp:4567
#16 0x00007f710bf064a0 in QApplication::notify (this=this@entry=0x10a42f0, receiver=receiver@entry=0x127e840, e=e@entry=0x7fffc6436e10) at kernel/qapplication.cpp:4353
#17 0x00007f710d82bcca in KApplication::notify (this=0x10a42f0, receiver=0x127e840, event=0x7fffc6436e10) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f710cb664dd in QCoreApplication::notifyInternal (this=0x10a42f0, receiver=0x127e840, event=event@entry=0x7fffc6436e10) at kernel/qcoreapplication.cpp:953
#19 0x00007f710c4fd088 in sendEvent (event=0x7fffc6436e10, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 QGraphicsView::dragLeaveEvent (this=<optimized out>, event=0x7fffc6437220) at graphicsview/qgraphicsview.cpp:2990
#21 0x00007f710bf4f273 in QWidget::event (this=this@entry=0x28798a0, event=event@entry=0x7fffc6437220) at kernel/qwidget.cpp:8589
#22 0x00007f710c2f0fce in QFrame::event (this=0x28798a0, e=0x7fffc6437220) at widgets/qframe.cpp:557
#23 0x00007f710c4fc7b9 in QGraphicsView::viewportEvent (this=0x28798a0, event=0x7fffc6437220) at graphicsview/qgraphicsview.cpp:2866
#24 0x00007f710cb66646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x10ad690, receiver=receiver@entry=0x29402b0, event=event@entry=0x7fffc6437220) at kernel/qcoreapplication.cpp:1063
#25 0x00007f710beffe0c in QApplicationPrivate::notify_helper (this=this@entry=0x10ad690, receiver=receiver@entry=0x29402b0, e=e@entry=0x7fffc6437220) at kernel/qapplication.cpp:4563
#26 0x00007f710bf07326 in QApplication::notify (this=this@entry=0x10a42f0, receiver=receiver@entry=0x29402b0, e=e@entry=0x7fffc6437220) at kernel/qapplication.cpp:4353
#27 0x00007f710d82bcca in KApplication::notify (this=0x10a42f0, receiver=0x29402b0, event=0x7fffc6437220) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f710cb664dd in QCoreApplication::notifyInternal (this=0x10a42f0, receiver=0x29402b0, event=0x7fffc6437220) at kernel/qcoreapplication.cpp:953
#29 0x00007f710bf876ee in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#30 QX11Data::xdndHandleLeave (this=0x7fffc6436950, w=0x542d360, xe=0x7fffc6437270) at kernel/qdnd_x11.cpp:1068
#31 0x00007f710bf87830 in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1107
#32 0x00007f710bf87c3a in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1410
#33 QDragManager::cancel (this=0x575ffc0, deleteSource=deleteSource@entry=false) at kernel/qdnd_x11.cpp:1411
#34 0x00007f710bf10bda in QDrag::~QDrag (this=0x542d380, __in_chrg=<optimized out>) at kernel/qdrag.cpp:132
#35 0x00007f710bf10bf9 in QDrag::~QDrag (this=0x542d380, __in_chrg=<optimized out>) at kernel/qdrag.cpp:133
#36 0x00007f710cb7d168 in QObjectPrivate::deleteChildren (this=this@entry=0x4c1ff40) at kernel/qobject.cpp:1907
#37 0x00007f710bf4bd37 in QWidget::~QWidget (this=0x4df5300, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1679
#38 0x00007f710bf4c049 in QWidget::~QWidget (this=0x4df5300, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1703
#39 0x00007f710cb7d168 in QObjectPrivate::deleteChildren (this=this@entry=0x4c239c0) at kernel/qobject.cpp:1907
#40 0x00007f710bf4bd37 in QWidget::~QWidget (this=0x346dea0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1679
#41 0x00007f710c4f6935 in QGraphicsView::~QGraphicsView (this=0x346dea0, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1158
#42 0x00007f710c4f6969 in QGraphicsView::~QGraphicsView (this=0x346dea0, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1164
#43 0x00007f71102b7a14 in ControllerWindow::~ControllerWindow (this=0x4918940, __in_chrg=<optimized out>) at ../../../../plasma/desktop/shell/controllerwindow.cpp:107
#44 0x00007f71102b7a69 in ControllerWindow::~ControllerWindow (this=0x4918940, __in_chrg=<optimized out>) at ../../../../plasma/desktop/shell/controllerwindow.cpp:108
#45 0x00007f710cb7ec58 in QObject::event (this=this@entry=0x4918940, e=e@entry=0x5756080) at kernel/qobject.cpp:1175
#46 0x00007f710bf4f55b in QWidget::event (this=0x4918940, event=0x5756080) at kernel/qwidget.cpp:8846
#47 0x00007f710beffe2c in QApplicationPrivate::notify_helper (this=this@entry=0x10ad690, receiver=receiver@entry=0x4918940, e=e@entry=0x5756080) at kernel/qapplication.cpp:4567
#48 0x00007f710bf064a0 in QApplication::notify (this=this@entry=0x10a42f0, receiver=receiver@entry=0x4918940, e=e@entry=0x5756080) at kernel/qapplication.cpp:4353
#49 0x00007f710d82bcca in KApplication::notify (this=0x10a42f0, receiver=0x4918940, event=0x5756080) at ../../kdeui/kernel/kapplication.cpp:311
#50 0x00007f710cb664dd in QCoreApplication::notifyInternal (this=0x10a42f0, receiver=receiver@entry=0x4918940, event=event@entry=0x5756080) at kernel/qcoreapplication.cpp:953
#51 0x00007f710cb69b3d in sendEvent (event=0x5756080, receiver=0x4918940) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#52 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1031090) at kernel/qcoreapplication.cpp:1577
#53 0x00007f710cb69fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#54 0x00007f710cb93f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#55 postEventSourceDispatch (s=0x10b4e40) at kernel/qeventdispatcher_glib.cpp:287
#56 0x00007f71037e2e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#57 0x00007f71037e3048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007f71037e30ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007f710cb937a1 in QEventDispatcherGlib::processEvents (this=0x10ad670, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#60 0x00007f710bfa1bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#61 0x00007f710cb650af in QEventLoop::processEvents (this=this@entry=0x2adff10, flags=...) at kernel/qeventloop.cpp:149
#62 0x00007f710cb653a5 in QEventLoop::exec (this=this@entry=0x2adff10, flags=...) at kernel/qeventloop.cpp:204
#63 0x00007f710bf8a09d in QDragManager::drag (this=0x575ffc0, o=o@entry=0x542d380) at kernel/qdnd_x11.cpp:2032
#64 0x00007f710bf10e3a in QDrag::exec (this=this@entry=0x542d380, supportedActions=..., defaultDropAction=Qt::MoveAction) at kernel/qdrag.cpp:284
#65 0x00007f7065817c68 in DeclarativeDragArea::mouseMoveEvent (this=0x58d3280, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:233
#66 0x00007f7065817d21 in DeclarativeDragArea::sceneEventFilter (this=0x58d3280, item=0x507a680, event=0x7fffc6438210) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:245
#67 0x00007f710c4cba85 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0x11d9910, item=item@entry=0x507a680, event=event@entry=0x7fffc6438210) at graphicsview/qgraphicsscene.cpp:1159
#68 0x00007f710c4d00ae in QGraphicsScenePrivate::sendEvent (this=0x11d9910, item=0x507a680, event=0x7fffc6438210) at graphicsview/qgraphicsscene.cpp:1211
#69 0x00007f710c4d05af in QGraphicsScenePrivate::sendMouseEvent (this=0x11d9910, mouseEvent=0x7fffc6438210) at graphicsview/qgraphicsscene.cpp:1295
#70 0x00007f710c4d9176 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fffc6438210) at graphicsview/qgraphicsscene.cpp:4102
#71 0x00007f710c4e505c in QGraphicsScene::event (this=0x127e840, event=0x7fffc6438210) at graphicsview/qgraphicsscene.cpp:3451
#72 0x00007f710beffe2c in QApplicationPrivate::notify_helper (this=this@entry=0x10ad690, receiver=receiver@entry=0x127e840, e=e@entry=0x7fffc6438210) at kernel/qapplication.cpp:4567
#73 0x00007f710bf064a0 in QApplication::notify (this=this@entry=0x10a42f0, receiver=receiver@entry=0x127e840, e=e@entry=0x7fffc6438210) at kernel/qapplication.cpp:4353
#74 0x00007f710d82bcca in KApplication::notify (this=0x10a42f0, receiver=0x127e840, event=0x7fffc6438210) at ../../kdeui/kernel/kapplication.cpp:311
#75 0x00007f710cb664dd in QCoreApplication::notifyInternal (this=0x10a42f0, receiver=0x127e840, event=event@entry=0x7fffc6438210) at kernel/qcoreapplication.cpp:953
#76 0x00007f710befe556 in sendSpontaneousEvent (event=event@entry=0x7fffc6438210, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#77 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fffc6438210) at kernel/qapplication.cpp:5565
#78 0x00007f710c4fa25c in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x4c239c0, event=event@entry=0x7fffc6438860) at graphicsview/qgraphicsview.cpp:646
#79 0x00007f710c4fb16a in QGraphicsView::mouseMoveEvent (this=0x346dea0, event=0x7fffc6438860) at graphicsview/qgraphicsview.cpp:3276
#80 0x00007f710bf4f635 in QWidget::event (this=this@entry=0x346dea0, event=event@entry=0x7fffc6438860) at kernel/qwidget.cpp:8361
#81 0x00007f710c2f0fce in QFrame::event (this=0x346dea0, e=0x7fffc6438860) at widgets/qframe.cpp:557
#82 0x00007f710c4fc7b9 in QGraphicsView::viewportEvent (this=0x346dea0, event=0x7fffc6438860) at graphicsview/qgraphicsview.cpp:2866
#83 0x00007f710cb66646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x10ad690, receiver=receiver@entry=0x4df5300, event=event@entry=0x7fffc6438860) at kernel/qcoreapplication.cpp:1063
#84 0x00007f710beffe0c in QApplicationPrivate::notify_helper (this=this@entry=0x10ad690, receiver=receiver@entry=0x4df5300, e=e@entry=0x7fffc6438860) at kernel/qapplication.cpp:4563
#85 0x00007f710bf065dd in QApplication::notify (this=this@entry=0x10a42f0, receiver=receiver@entry=0x4df5300, e=e@entry=0x7fffc6438860) at kernel/qapplication.cpp:4110
#86 0x00007f710d82bcca in KApplication::notify (this=0x10a42f0, receiver=0x4df5300, event=0x7fffc6438860) at ../../kdeui/kernel/kapplication.cpp:311
#87 0x00007f710cb664dd in QCoreApplication::notifyInternal (this=0x10a42f0, receiver=receiver@entry=0x4df5300, event=event@entry=0x7fffc6438860) at kernel/qcoreapplication.cpp:953
#88 0x00007f710bf05d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#89 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x4df5300, event=event@entry=0x7fffc6438860, alienWidget=alienWidget@entry=0x4df5300, nativeWidget=nativeWidget@entry=0x4918940, buttonDown=buttonDown@entry=0x7f710c9e5318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#90 0x00007f710bf7a9cb in QETWidget::translateMouseEvent (this=this@entry=0x4918940, event=event@entry=0x7fffc6438be0) at kernel/qapplication_x11.cpp:4634
#91 0x00007f710bf7a269 in QApplication::x11ProcessEvent (this=0x10a42f0, event=event@entry=0x7fffc6438be0) at kernel/qapplication_x11.cpp:3627
#92 0x00007f710bfa1b02 in x11EventSourceDispatch (s=0x10b2d70, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#93 0x00007f71037e2e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#94 0x00007f71037e3048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#95 0x00007f71037e30ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#96 0x00007f710cb937a1 in QEventDispatcherGlib::processEvents (this=0x10ad670, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#97 0x00007f710bfa1bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#98 0x00007f710cb650af in QEventLoop::processEvents (this=this@entry=0x7fffc6438fb0, flags=...) at kernel/qeventloop.cpp:149
#99 0x00007f710cb653a5 in QEventLoop::exec (this=this@entry=0x7fffc6438fb0, flags=...) at kernel/qeventloop.cpp:204
#100 0x00007f710cb6ab79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#101 0x00007f710befe37c in QApplication::exec () at kernel/qapplication.cpp:3828
#102 0x00007f71102c667c in kdemain (argc=1, argv=0x7fffc6439208) at ../../../../plasma/desktop/shell/main.cpp:126
#103 0x00007f710fee6ec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7fffc6439208, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffc64391f8) at libc-start.c:287
#104 0x000000000040070e in _start ()

Reported using DrKonqi