Application: umbrello (2.8.4)
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-29-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Just pressing Alt+Tab because I wanted to back to the Umbrello from another application

-- Backtrace:
Application: Umbrello UML Modeller (umbrello), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3e68f6d780 (LWP 2977))]

Thread 4 (Thread 0x7f3e546bf700 (LWP 2979)):
#0  0x00007f3e64f56b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3e61e57036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3e61e5749a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3e546c498b in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#4  0x00007f3e61e789e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3e64c5ae9a in start_thread (arg=0x7f3e546bf700) at pthread_create.c:308
#6  0x00007f3e64f624bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f3e53ebe700 (LWP 2980)):
#0  0x00007f3e64f56b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3e61e57036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3e61e5749a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3e5b81a406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f3e61e789e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3e64c5ae9a in start_thread (arg=0x7f3e53ebe700) at pthread_create.c:308
#6  0x00007f3e64f624bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3e37fff700 (LWP 3004)):
#0  0x00007f3e64f56b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3e61e57036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3e61e57164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3e65be7426 in QEventDispatcherGlib::processEvents (this=0x7f3e300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f3e65bb6c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f3e65bb6ed7 in QEventLoop::exec (this=0x7f3e37ffedd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f3e65ab5fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f3e65b969ff in QInotifyFileSystemWatcherEngine::run (this=0x22a7980) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f3e65ab8fcb in QThreadPrivate::start (arg=0x22a7980) at thread/qthread_unix.cpp:298
#9  0x00007f3e64c5ae9a in start_thread (arg=0x7f3e37fff700) at pthread_create.c:308
#10 0x00007f3e64f624bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3e68f6d780 (LWP 2977)):
[KCrash Handler]
#6  QTreeModel::index (this=0x2138340, item=0x25530e0, column=0) at itemviews/qtreewidget.cpp:240
#7  0x00007f3e66daa1a4 in index (column=0, item=0x25530e0, this=<optimized out>) at ../../include/QtGui/private/../../../src/gui/itemviews/qtreewidget_p.h:224
#8  QTreeWidget::closePersistentEditor (this=<optimized out>, item=0x25530e0, column=<optimized out>) at itemviews/qtreewidget.cpp:2954
#9  0x000000000075d1fd in UMLListView::cancelRename (this=0x2138aa0, item=0x25530e0) at ../../../umbrello/umbrello/umllistview.cpp:2818
#10 0x000000000075d3dc in UMLListView::startRename (this=0x2138aa0, item=0x20538e0) at ../../../umbrello/umbrello/umllistview.cpp:2796
#11 0x0000000000763d3f in UMLListView::popupMenuSel (this=0x2138aa0, action=<optimized out>) at ../../../umbrello/umbrello/umllistview.cpp:588
#12 0x00000000007669f4 in UMLListView::qt_static_metacall (_o=0x2138aa0, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./umllistview.moc:92
#13 0x00007f3e65bcc281 in QMetaObject::activate (sender=0x2611220, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffdaf2a630) at kernel/qobject.cpp:3547
#14 0x00007f3e66c55ea2 in QMenu::triggered (this=<optimized out>, _t1=0x231ffe0) at .moc/release-shared/moc_qmenu.cpp:178
#15 0x00007f3e66c572bb in QMenuPrivate::_q_actionTriggered (this=<optimized out>) at widgets/qmenu.cpp:1146
#16 0x00007f3e65bcc281 in QMetaObject::activate (sender=0x231ffe0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffdaf2a7e0) at kernel/qobject.cpp:3547
#17 0x00007f3e66804132 in QAction::triggered (this=<optimized out>, _t1=false) at .moc/release-shared/moc_qaction.cpp:277
#18 0x00007f3e6680431f in QAction::activate (this=0x231ffe0, event=<optimized out>) at kernel/qaction.cpp:1257
#19 0x00007f3e66c56119 in QMenuPrivate::activateCausedStack (this=0x27d0bc0, causedStack=..., action=0x231ffe0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1028
#20 0x00007f3e66c5c272 in QMenuPrivate::activateAction (this=0x27d0bc0, action=0x231ffe0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1120
#21 0x00007f3e676052d0 in KMenu::mouseReleaseEvent (this=0x2611220, e=0x7fffdaf2b3b0) at ../../kdeui/widgets/kmenu.cpp:464
#22 0x00007f3e6685b144 in QWidget::event (this=0x2611220, event=0x7fffdaf2b3b0) at kernel/qwidget.cpp:8362
#23 0x00007f3e66c5d80b in QMenu::event (this=0x2611220, e=0x7fffdaf2b3b0) at widgets/qmenu.cpp:2469
#24 0x00007f3e6680a894 in notify_helper (e=0x7fffdaf2b3b0, receiver=0x2611220, this=0x1998050) at kernel/qapplication.cpp:4559
#25 QApplicationPrivate::notify_helper (this=0x1998050, receiver=0x2611220, e=0x7fffdaf2b3b0) at kernel/qapplication.cpp:4531
#26 0x00007f3e668100bf in QApplication::notify (this=<optimized out>, receiver=0x2611220, e=0x7fffdaf2b3b0) at kernel/qapplication.cpp:4102
#27 0x00007f3e675449e6 in KApplication::notify (this=0x7fffdaf2c0b0, receiver=0x2611220, event=0x7fffdaf2b3b0) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f3e65bb7e9c in QCoreApplication::notifyInternal (this=0x7fffdaf2c0b0, receiver=0x2611220, event=0x7fffdaf2b3b0) at kernel/qcoreapplication.cpp:876
#29 0x00007f3e6680b862 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#30 QApplicationPrivate::sendMouseEvent (receiver=0x2611220, event=0x7fffdaf2b3b0, alienWidget=0x0, nativeWidget=0x2611220, buttonDown=0x0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3170
#31 0x00007f3e6688b2c1 in QETWidget::translateMouseEvent (this=0x2611220, event=<optimized out>) at kernel/qapplication_x11.cpp:4551
#32 0x00007f3e66889bae in QApplication::x11ProcessEvent (this=0x7fffdaf2c0b0, event=0x7fffdaf2bc80) at kernel/qapplication_x11.cpp:3732
#33 0x00007f3e668b30d2 in x11EventSourceDispatch (s=0x19963b0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#34 0x00007f3e61e56d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f3e61e570a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f3e61e57164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f3e65be73bf in QEventDispatcherGlib::processEvents (this=0x19683d0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#38 0x00007f3e668b2d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#39 0x00007f3e65bb6c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#40 0x00007f3e65bb6ed7 in QEventLoop::exec (this=0x7fffdaf2c020, flags=...) at kernel/qeventloop.cpp:204
#41 0x00007f3e65bbbf67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#42 0x0000000000438d16 in main (argc=3, argv=0x7fffdaf2c4c8) at ../../../umbrello/umbrello/main.cpp:111

Reported using DrKonqi