Application: plasma-desktop (4.11.13)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.16-3-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
- What I was doing when the application crashed:
Adding desktop switcher to the panel
- Unusual behavior I noticed:
The switcher was ticked but I couldn't see it on the panel

-- 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 0x7f0c4dc47800 (LWP 1323))]

Thread 3 (Thread 0x7f0c2ac5f700 (LWP 1325)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0c4663aafa in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f0c4663ab29 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f0c40e6c0a4 in start_thread (arg=0x7f0c2ac5f700) at pthread_create.c:309
#4  0x00007f0c4d532cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f0ba3ed2700 (LWP 1326)):
#0  0x00007f0c4d52a17d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f0c40548ee4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0c40548ffc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0c49fee507 in QEventDispatcherGlib::processEvents (this=0x7f0b9c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f0c49fbdae1 in QEventLoop::processEvents (this=this@entry=0x7f0ba3ed1d80, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0c49fbde45 in QEventLoop::exec (this=this@entry=0x7f0ba3ed1d80, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f0c49eb2b89 in QThread::exec (this=this@entry=0x799320) at thread/qthread.cpp:538
#7  0x00007f0c49f9e483 in QInotifyFileSystemWatcherEngine::run (this=0x799320) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f0c49eb53ef in QThreadPrivate::start (arg=0x799320) at thread/qthread_unix.cpp:349
#9  0x00007f0c40e6c0a4 in start_thread (arg=0x7f0ba3ed2700) at pthread_create.c:309
#10 0x00007f0c4d532cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f0c4dc47800 (LWP 1323)):
[KCrash Handler]
#6  0x00007f0b9370a990 in ?? ()
#7  0x00007f0ba16e1830 in DeclarativeMimeData::DeclarativeMimeData (this=0x7fff64a6cc70, copy=0x2c81610) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeMimeData.cpp:50
#8  0x00007f0ba16e10d1 in DeclarativeDragDropEvent::DeclarativeDragDropEvent (this=0x7fff64a6cc50, e=0x7fff64a6d0e0, parent=0xd56270) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragDropEvent.cpp:33
#9  0x00007f0ba16e1244 in DeclarativeDropArea::dragLeaveEvent (this=0xd56270, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDropArea.cpp:44
#10 0x00007f0c498f6ca9 in QGraphicsItem::sceneEvent (this=this@entry=0xd56280, event=event@entry=0x7fff64a6d0e0) at graphicsview/qgraphicsitem.cpp:6734
#11 0x00007f0c4bc572f4 in QDeclarativeItem::sceneEvent (this=0xd56270, event=0x7fff64a6d0e0) at graphicsitems/qdeclarativeitem.cpp:3047
#12 0x00007f0c4991f8d7 in QGraphicsScenePrivate::sendDragDropEvent (this=this@entry=0x8a6e00, item=0xd56280, dragDropEvent=0x7fff64a6d0e0) at graphicsview/qgraphicsscene.cpp:1250
#13 0x00007f0c4991f91c in QGraphicsScene::dragLeaveEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsscene.cpp:3738
#14 0x00007f0c4993694f in QGraphicsScene::event (this=0x86b930, event=0x7fff64a6d0e0) at graphicsview/qgraphicsscene.cpp:3406
#15 0x00007f0c4931329c in QApplicationPrivate::notify_helper (this=this@entry=0x767d00, receiver=receiver@entry=0x86b930, e=e@entry=0x7fff64a6d0e0) at kernel/qapplication.cpp:4570
#16 0x00007f0c49319da8 in QApplication::notify (this=this@entry=0x7593e0, receiver=receiver@entry=0x86b930, e=e@entry=0x7fff64a6d0e0) at kernel/qapplication.cpp:4356
#17 0x00007f0c4ace309a in KApplication::notify (this=0x7593e0, receiver=0x86b930, event=0x7fff64a6d0e0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f0c49fbef8d in QCoreApplication::notifyInternal (this=0x7593e0, receiver=0x86b930, event=event@entry=0x7fff64a6d0e0) at kernel/qcoreapplication.cpp:955
#19 0x00007f0c4994fc18 in sendEvent (event=0x7fff64a6d0e0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 QGraphicsView::dragLeaveEvent (this=<optimized out>, event=0x7fff64a6d550) at graphicsview/qgraphicsview.cpp:2990
#21 0x00007f0c493664d8 in QWidget::event (this=0x958190, event=0x7fff64a6d550) at kernel/qwidget.cpp:8775
#22 0x00007f0c497270be in QFrame::event (this=0x958190, e=0x7fff64a6d550) at widgets/qframe.cpp:557
#23 0x00007f0c4994f2b1 in QGraphicsView::viewportEvent (this=0x958190, event=0x7fff64a6d550) at graphicsview/qgraphicsview.cpp:2866
#24 0x00007f0c49fbf0f6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x767d00, receiver=receiver@entry=0x907db0, event=event@entry=0x7fff64a6d550) at kernel/qcoreapplication.cpp:1065
#25 0x00007f0c4931327c in QApplicationPrivate::notify_helper (this=this@entry=0x767d00, receiver=0x907db0, e=e@entry=0x7fff64a6d550) at kernel/qapplication.cpp:4566
#26 0x00007f0c4931b90f in QApplication::notify (this=this@entry=0x7593e0, receiver=receiver@entry=0x907db0, e=e@entry=0x7fff64a6d550) at kernel/qapplication.cpp:4356
#27 0x00007f0c4ace309a in KApplication::notify (this=0x7593e0, receiver=0x907db0, event=0x7fff64a6d550) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f0c49fbef8d in QCoreApplication::notifyInternal (this=0x7593e0, receiver=0x907db0, event=event@entry=0x7fff64a6d550) at kernel/qcoreapplication.cpp:955
#29 0x00007f0c4939d0ce in sendEvent (event=0x7fff64a6d550, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#30 QX11Data::xdndHandleLeave (this=<optimized out>, w=<optimized out>, xe=xe@entry=0x7fff64a6d5a0) at kernel/qdnd_x11.cpp:1064
#31 0x00007f0c4939d210 in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1103
#32 0x00007f0c4939d60a in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1406
#33 QDragManager::cancel (this=0xed3060, deleteSource=deleteSource@entry=false) at kernel/qdnd_x11.cpp:1407
#34 0x00007f0c49324c4a in QDrag::~QDrag (this=0x27a40a0, __in_chrg=<optimized out>) at kernel/qdrag.cpp:132
#35 0x00007f0c49324c69 in QDrag::~QDrag (this=0x27a40a0, __in_chrg=<optimized out>) at kernel/qdrag.cpp:133
#36 0x00007f0c49fd6a78 in QObjectPrivate::deleteChildren (this=this@entry=0x35ac160) at kernel/qobject.cpp:1935
#37 0x00007f0c49365f03 in QWidget::~QWidget (this=0x327e820, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1679
#38 0x00007f0c49366219 in QWidget::~QWidget (this=0x327e820, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1703
#39 0x00007f0c49fd6a78 in QObjectPrivate::deleteChildren (this=this@entry=0x280a920) at kernel/qobject.cpp:1935
#40 0x00007f0c49365f03 in QWidget::~QWidget (this=0x1a93f60, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1679
#41 0x00007f0c49948d82 in QGraphicsView::~QGraphicsView (this=0x1a93f60, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1158
#42 0x00007f0c49948dd9 in QGraphicsView::~QGraphicsView (this=0x1a93f60, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1164
#43 0x00007f0c4d8247b8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#44 0x00007f0c4d824829 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#45 0x00007f0c49fd8668 in QObject::event (this=0x8d5cb0, e=<optimized out>) at kernel/qobject.cpp:1203
#46 0x00007f0c493669f3 in QWidget::event (this=0x8d5cb0, event=0x42488e0) at kernel/qwidget.cpp:8859
#47 0x00007f0c4931329c in QApplicationPrivate::notify_helper (this=this@entry=0x767d00, receiver=receiver@entry=0x8d5cb0, e=e@entry=0x42488e0) at kernel/qapplication.cpp:4570
#48 0x00007f0c49319da8 in QApplication::notify (this=this@entry=0x7593e0, receiver=receiver@entry=0x8d5cb0, e=e@entry=0x42488e0) at kernel/qapplication.cpp:4356
#49 0x00007f0c4ace309a in KApplication::notify (this=0x7593e0, receiver=0x8d5cb0, event=0x42488e0) at ../../kdeui/kernel/kapplication.cpp:311
#50 0x00007f0c49fbef8d in QCoreApplication::notifyInternal (this=0x7593e0, receiver=receiver@entry=0x8d5cb0, event=event@entry=0x42488e0) at kernel/qcoreapplication.cpp:955
#51 0x00007f0c49fc2821 in sendEvent (event=0x42488e0, receiver=0x8d5cb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#52 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x6ea220) at kernel/qcoreapplication.cpp:1579
#53 0x00007f0c49fc2cb3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1472
#54 0x00007f0c49fee3a3 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#55 postEventSourceDispatch (s=0x767f10) at kernel/qeventdispatcher_glib.cpp:280
#56 0x00007f0c40548c5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#57 0x00007f0c40548f48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007f0c40548ffc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007f0c49fee4ed in QEventDispatcherGlib::processEvents (this=0x6ebb20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#60 0x00007f0c493b7b96 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#61 0x00007f0c49fbdae1 in QEventLoop::processEvents (this=this@entry=0x2c35c90, flags=...) at kernel/qeventloop.cpp:149
#62 0x00007f0c49fbde45 in QEventLoop::exec (this=this@entry=0x2c35c90, flags=...) at kernel/qeventloop.cpp:204
#63 0x00007f0c4939fa9d in QDragManager::drag (this=0xed3060, o=o@entry=0x27a40a0) at kernel/qdnd_x11.cpp:2028
#64 0x00007f0c49324d9a in QDrag::exec (this=this@entry=0x27a40a0, supportedActions=..., defaultDropAction=Qt::MoveAction) at kernel/qdrag.cpp:284
#65 0x00007f0ba16e0f88 in DeclarativeDragArea::mouseMoveEvent (this=0x484e150, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:233
#66 0x00007f0ba16e1039 in DeclarativeDragArea::sceneEventFilter (this=0x484e150, item=0x4855e10, event=0x7fff64a6e5a0) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:245
#67 0x00007f0c4991ae40 in QGraphicsScenePrivate::filterDescendantEvent (this=<optimized out>, item=0x4855e10, event=0x7fff64a6e5a0) at graphicsview/qgraphicsscene.cpp:1159
#68 0x00007f0c4991f7ae in QGraphicsScenePrivate::sendEvent (this=0x8a6e00, item=0x4855e10, event=0x7fff64a6e5a0) at graphicsview/qgraphicsscene.cpp:1211
#69 0x00007f0c4991fce7 in QGraphicsScenePrivate::sendMouseEvent (this=0x8a6e00, mouseEvent=0x7fff64a6e5a0) at graphicsview/qgraphicsscene.cpp:1295
#70 0x00007f0c49929776 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fff64a6e5a0) at graphicsview/qgraphicsscene.cpp:4102
#71 0x00007f0c4993678f in QGraphicsScene::event (this=0x86b930, event=0x7fff64a6e5a0) at graphicsview/qgraphicsscene.cpp:3451
#72 0x00007f0c4931329c in QApplicationPrivate::notify_helper (this=this@entry=0x767d00, receiver=receiver@entry=0x86b930, e=e@entry=0x7fff64a6e5a0) at kernel/qapplication.cpp:4570
#73 0x00007f0c49319da8 in QApplication::notify (this=this@entry=0x7593e0, receiver=receiver@entry=0x86b930, e=e@entry=0x7fff64a6e5a0) at kernel/qapplication.cpp:4356
#74 0x00007f0c4ace309a in KApplication::notify (this=0x7593e0, receiver=0x86b930, event=0x7fff64a6e5a0) at ../../kdeui/kernel/kapplication.cpp:311
#75 0x00007f0c49fbef8d in QCoreApplication::notifyInternal (this=0x7593e0, receiver=0x86b930, event=event@entry=0x7fff64a6e5a0) at kernel/qcoreapplication.cpp:955
#76 0x00007f0c49311946 in sendSpontaneousEvent (event=event@entry=0x7fff64a6e5a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#77 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fff64a6e5a0) at kernel/qapplication.cpp:5568
#78 0x00007f0c4994ca68 in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x280a920, event=event@entry=0x7fff64a6ec70) at graphicsview/qgraphicsview.cpp:646
#79 0x00007f0c4994dafa in QGraphicsView::mouseMoveEvent (this=0x1a93f60, event=0x7fff64a6ec70) at graphicsview/qgraphicsview.cpp:3276
#80 0x00007f0c493664d8 in QWidget::event (this=0x1a93f60, event=0x7fff64a6ec70) at kernel/qwidget.cpp:8775
#81 0x00007f0c497270be in QFrame::event (this=0x1a93f60, e=0x7fff64a6ec70) at widgets/qframe.cpp:557
#82 0x00007f0c4994f2b1 in QGraphicsView::viewportEvent (this=0x1a93f60, event=0x7fff64a6ec70) at graphicsview/qgraphicsview.cpp:2866
#83 0x00007f0c49fbf0f6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x767d00, receiver=receiver@entry=0x327e820, event=event@entry=0x7fff64a6ec70) at kernel/qcoreapplication.cpp:1065
#84 0x00007f0c4931327c in QApplicationPrivate::notify_helper (this=this@entry=0x767d00, receiver=receiver@entry=0x327e820, e=e@entry=0x7fff64a6ec70) at kernel/qapplication.cpp:4566
#85 0x00007f0c49319f0f in QApplication::notify (this=this@entry=0x7593e0, receiver=receiver@entry=0x327e820, e=e@entry=0x7fff64a6ec70) at kernel/qapplication.cpp:4113
#86 0x00007f0c4ace309a in KApplication::notify (this=0x7593e0, receiver=0x327e820, event=0x7fff64a6ec70) at ../../kdeui/kernel/kapplication.cpp:311
#87 0x00007f0c49fbef8d in QCoreApplication::notifyInternal (this=0x7593e0, receiver=receiver@entry=0x327e820, event=event@entry=0x7fff64a6ec70) at kernel/qcoreapplication.cpp:955
#88 0x00007f0c4931956f in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#89 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x327e820, event=event@entry=0x7fff64a6ec70, alienWidget=alienWidget@entry=0x327e820, nativeWidget=nativeWidget@entry=0x8d5cb0, buttonDown=buttonDown@entry=0x7f0c49e35538 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3178
#90 0x00007f0c493900a2 in QETWidget::translateMouseEvent (this=this@entry=0x8d5cb0, event=event@entry=0x7fff64a6efd0) at kernel/qapplication_x11.cpp:4540
#91 0x00007f0c4938ea9c in QApplication::x11ProcessEvent (this=0x7593e0, event=event@entry=0x7fff64a6efd0) at kernel/qapplication_x11.cpp:3663
#92 0x00007f0c493b7ad2 in x11EventSourceDispatch (s=0x767850, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#93 0x00007f0c40548c5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#94 0x00007f0c40548f48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#95 0x00007f0c40548ffc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#96 0x00007f0c49fee4ed in QEventDispatcherGlib::processEvents (this=0x6ebb20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#97 0x00007f0c493b7b96 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#98 0x00007f0c49fbdae1 in QEventLoop::processEvents (this=this@entry=0x7fff64a6f3b0, flags=...) at kernel/qeventloop.cpp:149
#99 0x00007f0c49fbde45 in QEventLoop::exec (this=this@entry=0x7fff64a6f3b0, flags=...) at kernel/qeventloop.cpp:204
#100 0x00007f0c49fc38b9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1227
#101 0x00007f0c4d83647d in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#102 0x00007f0c4d46eb45 in __libc_start_main (main=0x4006f0, argc=1, argv=0x7fff64a6f608, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff64a6f5f8) at libc-start.c:287
#103 0x000000000040071e in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 326140.

Possible duplicates by query: bug 340258, bug 339481, bug 335022, bug 334944, bug 334835.

Reported using DrKonqi