Application: plasma-desktop (4.11.2)
KDE Platform Version: 4.11.2
Qt Version: 4.8.4
Operating System: Linux 3.11.0-13-generic i686
Distribution: Ubuntu 13.10

-- Information about the crash:
- What I was doing when the application crashed:

I clicked to ungroup skype windows. The same happened when ungroupin other softwares, like libreoffice,

- Unusual behavior I noticed:

-- Backtrace:
Application: Shell del desktop di Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xaf23e740 (LWP 1674))]

Thread 4 (Thread 0xab6e1b40 (LWP 1675)):
#0  0xb7714424 in __kernel_vsyscall ()
#1  0xb20d484b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb75d09bc in __pthread_cond_wait (cond=0xb31d68d0, mutex=0xb31d68b8) at forward.c:149
#3  0xb30d3ef2 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb30d3f3f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb20d0d78 in start_thread (arg=0xab6e1b40) at pthread_create.c:311
#6  0xb75c301e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 3 (Thread 0xa436cb40 (LWP 1679)):
#0  0xb7714424 in __kernel_vsyscall ()
#1  0xb75b3a0b in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb1fcaa4b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb1fbbb68 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb1fbbca8 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb602d8df in QEventDispatcherGlib::processEvents (this=0xa3a00480, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb5ffc9f3 in QEventLoop::processEvents (this=this@entry=0xa436c228, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5ffcd19 in QEventLoop::exec (this=this@entry=0xa436c228, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5eebe3d in QThread::exec (this=this@entry=0x91327b8) at thread/qthread.cpp:542
#9  0xb5fdce14 in QInotifyFileSystemWatcherEngine::run (this=0x91327b8) at io/qfilesystemwatcher_inotify.cpp:265
#10 0xb5eee72f in QThreadPrivate::start (arg=0x91327b8) at thread/qthread_unix.cpp:338
#11 0xb20d0d78 in start_thread (arg=0xa436cb40) at pthread_create.c:311
#12 0xb75c301e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 2 (Thread 0xa399cb40 (LWP 1684)):
#0  0xb7714424 in __kernel_vsyscall ()
#1  0xb75d64d2 in clock_gettime (clock_id=1, tp=0xa399bfc8) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb5f493ec in do_gettime (frac=0xa399bfc0, sec=0xa399bfb8) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0xb602efd2 in updateCurrentTime (this=0xa30020bc) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0xa30020bc, tm=...) at kernel/qeventdispatcher_unix.cpp:461
#6  0xb602d67b in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa399c0bc) at kernel/qeventdispatcher_glib.cpp:136
#7  0xb602d70d in timerSourcePrepare (source=0xa3002088, timeout=0xa399c0bc) at kernel/qeventdispatcher_glib.cpp:169
#8  0xb1fbb143 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb1fbba5f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb1fbbca8 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb602d8df in QEventDispatcherGlib::processEvents (this=0xa3000480, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0xb5ffc9f3 in QEventLoop::processEvents (this=this@entry=0xa399c228, flags=...) at kernel/qeventloop.cpp:149
#13 0xb5ffcd19 in QEventLoop::exec (this=this@entry=0xa399c228, flags=...) at kernel/qeventloop.cpp:204
#14 0xb5eebe3d in QThread::exec (this=this@entry=0x91fefc8) at thread/qthread.cpp:542
#15 0xb5fdce14 in QInotifyFileSystemWatcherEngine::run (this=0x91fefc8) at io/qfilesystemwatcher_inotify.cpp:265
#16 0xb5eee72f in QThreadPrivate::start (arg=0x91fefc8) at thread/qthread_unix.cpp:338
#17 0xb20d0d78 in start_thread (arg=0xa399cb40) at pthread_create.c:311
#18 0xb75c301e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 1 (Thread 0xaf23e740 (LWP 1674)):
[KCrash Handler]
#7  0xb5b4efc6 in QGraphicsItem::ungrabMouse (this=0xb069dc0) at graphicsview/qgraphicsitem.cpp:3522
#8  0xb5b7f9f3 in QGraphicsScenePrivate::clearMouseGrabber (this=this@entry=0x89c4ac0) at graphicsview/qgraphicsscene.cpp:1004
#9  0xb5b82f3e in QGraphicsScenePrivate::sendMouseEvent (this=0x89c4ac0, mouseEvent=0xbf97c040) at graphicsview/qgraphicsscene.cpp:1279
#10 0xb5b8b0d7 in QGraphicsScene::mouseMoveEvent (this=0x89e15e0, mouseEvent=0xbf97c040) at graphicsview/qgraphicsscene.cpp:4102
#11 0xb5b97fc8 in QGraphicsScene::event (this=0x89e15e0, event=0xbf97c040) at graphicsview/qgraphicsscene.cpp:3451
#12 0xb550e744 in QApplicationPrivate::notify_helper (this=0x8970458, receiver=0x89e15e0, e=0xbf97c040) at kernel/qapplication.cpp:4567
#13 0xb5515223 in QApplication::notify (this=0x893a1f0, receiver=receiver@entry=0x89e15e0, e=e@entry=0xbf97c040) at kernel/qapplication.cpp:4353
#14 0xb6671ff4 in KApplication::notify (this=0x893a1f0, receiver=0x89e15e0, event=0xbf97c040) at ../../kdeui/kernel/kapplication.cpp:311
#15 0xb5ffdeda in QCoreApplication::notifyInternal (this=0x893a1f0, receiver=receiver@entry=0x89e15e0, event=event@entry=0xbf97c040) at kernel/qcoreapplication.cpp:946
#16 0xb550cbcd in sendSpontaneousEvent (event=0xbf97c040, receiver=0x89e15e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#17 qt_sendSpontaneousEvent (receiver=0x89e15e0, event=event@entry=0xbf97c040) at kernel/qapplication.cpp:5565
#18 0xb5bafb3d in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x9f91938, event=event@entry=0xbf97c5e4) at graphicsview/qgraphicsview.cpp:646
#19 0xb5bb0c30 in QGraphicsView::mouseMoveEvent (this=0x9f908e8, event=0xbf97c5e4) at graphicsview/qgraphicsview.cpp:3276
#20 0xb55682ec in QWidget::event (this=this@entry=0x9f908e8, event=event@entry=0xbf97c5e4) at kernel/qwidget.cpp:8360
#21 0xb596cfcc in QFrame::event (this=this@entry=0x9f908e8, e=e@entry=0xbf97c5e4) at widgets/qframe.cpp:557
#22 0xb59fb318 in QAbstractScrollArea::viewportEvent (this=this@entry=0x9f908e8, e=e@entry=0xbf97c5e4) at widgets/qabstractscrollarea.cpp:1043
#23 0xb5bb2627 in QGraphicsView::viewportEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsview.cpp:2866
#24 0xb59fb596 in viewportEvent (event=0xbf97c5e4, this=<optimized out>) at widgets/qabstractscrollarea_p.h:100
#25 QAbstractScrollAreaFilter::eventFilter (this=0x9a0ae98, o=0xa000310, e=0xbf97c5e4) at widgets/qabstractscrollarea_p.h:116
#26 0xb5ffe04e in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x8970458, receiver=receiver@entry=0xa000310, event=event@entry=0xbf97c5e4) at kernel/qcoreapplication.cpp:1056
#27 0xb550e721 in QApplicationPrivate::notify_helper (this=0x8970458, receiver=receiver@entry=0xa000310, e=0xbf97c5e4) at kernel/qapplication.cpp:4563
#28 0xb5516df8 in QApplication::notify (this=0x893a1f0, receiver=receiver@entry=0xa000310, e=e@entry=0xbf97c5e4) at kernel/qapplication.cpp:4110
#29 0xb6671ff4 in KApplication::notify (this=0x893a1f0, receiver=0xa000310, event=0xbf97c5e4) at ../../kdeui/kernel/kapplication.cpp:311
#30 0xb5ffdeda in QCoreApplication::notifyInternal (this=0x893a1f0, receiver=receiver@entry=0xa000310, event=event@entry=0xbf97c5e4) at kernel/qcoreapplication.cpp:946
#31 0xb5514aa3 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#32 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0xa000310, event=0xbf97c5e4, alienWidget=0xa000310, nativeWidget=0x9f908e8, buttonDown=buttonDown@entry=0xb5e83cc4 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#33 0xb55984e8 in QETWidget::translateMouseEvent (this=this@entry=0x9f908e8, event=event@entry=0xbf97c80c) at kernel/qapplication_x11.cpp:4631
#34 0xb5596fb6 in QApplication::x11ProcessEvent (this=0x893a1f0, event=event@entry=0xbf97c80c) at kernel/qapplication_x11.cpp:3746
#35 0xb55c3274 in x11EventSourceDispatch (s=0x889c6d8, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#36 0xb1fbb83e in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#37 0xb1fbbbe8 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#38 0xb1fbbca8 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#39 0xb602d8bf in QEventDispatcherGlib::processEvents (this=this@entry=0x8969d20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#40 0xb55c332e in QGuiEventDispatcherGlib::processEvents (this=0x8969d20, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#41 0xb5ffc9f3 in QEventLoop::processEvents (this=this@entry=0xbf97cac8, flags=...) at kernel/qeventloop.cpp:149
#42 0xb5ffcd19 in QEventLoop::exec (this=this@entry=0xbf97cac8, flags=...) at kernel/qeventloop.cpp:204
#43 0xb600289e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#44 0xb550c974 in QApplication::exec () at kernel/qapplication.cpp:3828
#45 0xb76d2927 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#46 0x0804855b in ?? ()
#47 0xb74ea905 in __libc_start_main (main=0x8048540, argc=1, ubp_av=0xbf97cc64, init=0x8048660 <__libc_csu_init>, fini=0x80486d0 <__libc_csu_fini>, rtld_fini=0xb77245f0 <_dl_fini>, stack_end=0xbf97cc5c) at libc-start.c:260
#48 0x0804857e in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 325383.

Possible duplicates by query: bug 326842, bug 326423, bug 325733, bug 325732, bug 325383.

Reported using DrKonqi