Bug 320682

Summary: Crash when dragging a window from task manager over virtual desktop in Pager and not releasing left mouse button
Product: [Unmaintained] plasma4 Reporter: titombitel
Component: generalAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: crash    
Priority: NOR    
Version First Reported In: 4.10.3   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description titombitel 2013-06-03 23:11:42 UTC 
Application: plasma-desktop (4.10.3)
KDE Platform Version: 4.10.3
Qt Version: 4.8.4
Operating System: Linux 3.9.4-200.fc18.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
Steps to reproduce:
1. Drag a window from Task Manager over virtual desktop in Pager.
2. Don't drop. Keep LMB pressed.
3. Wait a sec.
4. Enjoy your crash.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f72ca97a880 (LWP 1078))]

Thread 10 (Thread 0x7f72ba9d6700 (LWP 1080)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x00000034831868c7 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x3483494660 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00000034831868f9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x0000003464a07d15 in start_thread (arg=0x7f72ba9d6700) at pthread_create.c:308
#4  0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 9 (Thread 0x7f72318e9700 (LWP 1083)):
#0  0x0000003464a0e12d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003466a840df in read (__nbytes=16, __buf=0x7f72318e8ae0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7f722c001fb0) at gwakeup.c:212
#3  0x0000003466a478b4 in g_main_context_check (context=context@entry=0x7f72240009a0, max_priority=2147483647, fds=fds@entry=0x7f72240029b0, n_fds=n_fds@entry=1) at gmain.c:3129
#4  0x0000003466a47cc2 in g_main_context_iterate (context=context@entry=0x7f72240009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3287
#5  0x0000003466a47e44 in g_main_context_iteration (context=0x7f72240009a0, may_block=1) at gmain.c:3351
#6  0x000000346fba5fa6 in QEventDispatcherGlib::processEvents (this=0x7f72240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x000000346fb765ef in QEventLoop::processEvents (this=this@entry=0x7f72318e8cd0, flags=...) at kernel/qeventloop.cpp:149
#8  0x000000346fb76878 in QEventLoop::exec (this=0x7f72318e8cd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x000000346fa78980 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#10 0x000000346fb56e1f in QInotifyFileSystemWatcherEngine::run (this=0x1cbdea0) at io/qfilesystemwatcher_inotify.cpp:256
#11 0x000000346fa7b95c in QThreadPrivate::start (arg=0x1cbdea0) at thread/qthread_unix.cpp:338
#12 0x0000003464a07d15 in start_thread (arg=0x7f72318e9700) at pthread_create.c:308
#13 0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 8 (Thread 0x7f72291f5700 (LWP 1084)):
#0  0x00000034642e99ad in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003466a47d24 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f72200042e0, timeout=2359707, context=0x7f72200009a0) at gmain.c:3584
#2  g_main_context_iterate (context=context@entry=0x7f72200009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3285
#3  0x0000003466a47e44 in g_main_context_iteration (context=0x7f72200009a0, may_block=1) at gmain.c:3351
#4  0x000000346fba5fa6 in QEventDispatcherGlib::processEvents (this=0x7f72200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x000000346fb765ef in QEventLoop::processEvents (this=this@entry=0x7f72291f4cc0, flags=...) at kernel/qeventloop.cpp:149
#6  0x000000346fb76878 in QEventLoop::exec (this=0x7f72291f4cc0, flags=...) at kernel/qeventloop.cpp:204
#7  0x000000346fa78980 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#8  0x00007f722988c2d5 in KCupsConnection::run() () from /lib64/libkcupslib.so
#9  0x000000346fa7b95c in QThreadPrivate::start (arg=0x28d2bc0) at thread/qthread_unix.cpp:338
#10 0x0000003464a07d15 in start_thread (arg=0x7f72291f5700) at pthread_create.c:308
#11 0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 7 (Thread 0x7f721fcff700 (LWP 10181)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x000000346fa7bebb in wait (time=18446744073709551615, this=0x1d95d40) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d8be90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x0000003d8040aad1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1d855a0, th=0x3423a20) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x0000003d8040d31b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x3423a20) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x0000003d8040d334 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x3423a20) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x0000003d8040c18f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f721fcfed00, parent=0x1d855a0, th=th@entry=0x3423a20) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:87
#7  0x0000003d8040c21b in ThreadWeaver::Thread::run (this=0x3423a20) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:142
#8  0x000000346fa7b95c in QThreadPrivate::start (arg=0x3423a20) at thread/qthread_unix.cpp:338
#9  0x0000003464a07d15 in start_thread (arg=0x7f721fcff700) at pthread_create.c:308
#10 0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 6 (Thread 0x7f721ed20700 (LWP 10182)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x000000346fa7bebb in wait (time=18446744073709551615, this=0x1d95d40) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d8be90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x0000003d8040aad1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1d855a0, th=0x44dc9e0) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x0000003d8040d31b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x44dc9e0) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x0000003d8040c18f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f721ed1fd00, parent=0x1d855a0, th=th@entry=0x44dc9e0) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:87
#6  0x0000003d8040c21b in ThreadWeaver::Thread::run (this=0x44dc9e0) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:142
#7  0x000000346fa7b95c in QThreadPrivate::start (arg=0x44dc9e0) at thread/qthread_unix.cpp:338
#8  0x0000003464a07d15 in start_thread (arg=0x7f721ed20700) at pthread_create.c:308
#9  0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 5 (Thread 0x7f720fcff700 (LWP 10183)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x000000346fa7bebb in wait (time=18446744073709551615, this=0x1d95d40) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d8be90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x0000003d8040aad1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1d855a0, th=0x4623980) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x0000003d8040d31b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x4623980) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x0000003d8040c18f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f720fcfed00, parent=0x1d855a0, th=th@entry=0x4623980) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:87
#6  0x0000003d8040c21b in ThreadWeaver::Thread::run (this=0x4623980) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:142
#7  0x000000346fa7b95c in QThreadPrivate::start (arg=0x4623980) at thread/qthread_unix.cpp:338
#8  0x0000003464a07d15 in start_thread (arg=0x7f720fcff700) at pthread_create.c:308
#9  0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 4 (Thread 0x7f721cc0c700 (LWP 10184)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x000000346fa7bebb in wait (time=18446744073709551615, this=0x1d95d40) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d8be90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x0000003d8040aad1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1d855a0, th=0x4735a90) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x0000003d8040d31b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x4735a90) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x0000003d8040c18f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f721cc0bd00, parent=0x1d855a0, th=th@entry=0x4735a90) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:87
#6  0x0000003d8040c21b in ThreadWeaver::Thread::run (this=0x4735a90) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:142
#7  0x000000346fa7b95c in QThreadPrivate::start (arg=0x4735a90) at thread/qthread_unix.cpp:338
#8  0x0000003464a07d15 in start_thread (arg=0x7f721cc0c700) at pthread_create.c:308
#9  0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 3 (Thread 0x7f7207fff700 (LWP 10185)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x000000346fa7bebb in wait (time=18446744073709551615, this=0x1d95d40) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d8be90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x0000003d8040aad1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1d855a0, th=0x13e0720) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x0000003d8040d31b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x13e0720) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x0000003d8040d334 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x13e0720) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x0000003d8040d334 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x13e0720) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x0000003d8040c18f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f7207ffed00, parent=0x1d855a0, th=th@entry=0x13e0720) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:87
#8  0x0000003d8040c21b in ThreadWeaver::Thread::run (this=0x13e0720) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:142
#9  0x000000346fa7b95c in QThreadPrivate::start (arg=0x13e0720) at thread/qthread_unix.cpp:338
#10 0x0000003464a07d15 in start_thread (arg=0x7f7207fff700) at pthread_create.c:308
#11 0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 2 (Thread 0x7f7206db7700 (LWP 10186)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x000000346fa7bebb in wait (time=18446744073709551615, this=0x1d95d40) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d8be90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x0000003d8040aad1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1d855a0, th=0x189b270) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x0000003d8040d31b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d7e3f0, th=0x189b270) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x0000003d8040c18f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f7206db6d00, parent=0x1d855a0, th=th@entry=0x189b270) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:87
#6  0x0000003d8040c21b in ThreadWeaver::Thread::run (this=0x189b270) at /usr/src/debug/kdelibs-4.10.3/threadweaver/Weaver/Thread.cpp:142
#7  0x000000346fa7b95c in QThreadPrivate::start (arg=0x189b270) at thread/qthread_unix.cpp:338
#8  0x0000003464a07d15 in start_thread (arg=0x7f7206db7700) at pthread_create.c:308
#9  0x00000034642f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 1 (Thread 0x7f72ca97a880 (LWP 1078)):
[KCrash Handler]
#6  0x0000000000000031 in ?? ()
#7  0x00007f72395e51e4 in DeclarativeMimeData::DeclarativeMimeData (this=0x7fff59ef0060, copy=0x214b2c0) at /usr/src/debug/kde-runtime-4.10.3/plasma/declarativeimports/draganddrop/DeclarativeMimeData.cpp:50
#8  0x00007f72395e4c49 in DeclarativeDragDropEvent::DeclarativeDragDropEvent (this=0x7fff59ef0040, e=0x7fff59ef0740, parent=0x1ac90c0) at /usr/src/debug/kde-runtime-4.10.3/plasma/declarativeimports/draganddrop/DeclarativeDragDropEvent.cpp:33
#9  0x00007f72395e4db3 in DeclarativeDropArea::dragLeaveEvent (this=0x1ac90c0, event=<optimized out>) at /usr/src/debug/kde-runtime-4.10.3/plasma/declarativeimports/draganddrop/DeclarativeDropArea.cpp:44
#10 0x000000305858614d in QGraphicsItem::sceneEvent (this=0x1ac90d0, event=0x7fff59ef0740) at graphicsview/qgraphicsitem.cpp:6721
#11 0x0000003060754a12 in QDeclarativeItem::sceneEvent (this=0x1ac90c0, event=0x7fff59ef0740) at graphicsitems/qdeclarativeitem.cpp:3015
#12 0x00000030585b0dfc in QGraphicsScenePrivate::sendDragDropEvent (this=this@entry=0x143aec0, item=0x1ac90d0, dragDropEvent=0x7fff59ef0740) at graphicsview/qgraphicsscene.cpp:1250
#13 0x00000030585b0e6f in QGraphicsScene::dragLeaveEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsscene.cpp:3738
#14 0x00000030585c2f42 in QGraphicsScene::event (this=0x1588f90, event=0x7fff59ef0740) at graphicsview/qgraphicsscene.cpp:3406
#15 0x0000003057fca5cc in QApplicationPrivate::notify_helper (this=0x14319d0, receiver=0x1588f90, e=0x7fff59ef0740) at kernel/qapplication.cpp:4562
#16 0x0000003057fcea4a in QApplication::notify (this=0x141b030, receiver=0x1588f90, e=0x7fff59ef0740) at kernel/qapplication.cpp:4423
#17 0x000000305a646f16 in KApplication::notify (this=0x141b030, receiver=0x1588f90, event=0x7fff59ef0740) at /usr/src/debug/kdelibs-4.10.3/kdeui/kernel/kapplication.cpp:311
#18 0x000000346fb7793e in QCoreApplication::notifyInternal (this=0x141b030, receiver=0x1588f90, event=0x7fff59ef0740) at kernel/qcoreapplication.cpp:949
#19 0x00000030585d0e25 in sendEvent (event=0x7fff59ef0740, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#20 QGraphicsView::dragLeaveEvent (this=<optimized out>, event=0x7fff59ef0ef0) at graphicsview/qgraphicsview.cpp:2990
#21 0x000000305801a0e3 in QWidget::event (this=0x1e5ee10, event=0x7fff59ef0ef0) at kernel/qwidget.cpp:8588
#22 0x00000030583c49f6 in QFrame::event (this=0x1e5ee10, e=0x7fff59ef0ef0) at widgets/qframe.cpp:557
#23 0x00000030585dc56b in QGraphicsView::viewportEvent (this=0x1e5ee10, event=0x7fff59ef0ef0) at graphicsview/qgraphicsview.cpp:2866
#24 0x000000346fb77aa6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x1e13af0, event=0x7fff59ef0ef0) at kernel/qcoreapplication.cpp:1059
#25 0x0000003057fca59c in QApplicationPrivate::notify_helper (this=0x14319d0, receiver=0x1e13af0, e=0x7fff59ef0ef0) at kernel/qapplication.cpp:4558
#26 0x0000003057fcf3f3 in QApplication::notify (this=<optimized out>, receiver=0x1e13af0, e=0x7fff59ef0ef0) at kernel/qapplication.cpp:4348
#27 0x000000305a646f16 in KApplication::notify (this=0x141b030, receiver=0x1e13af0, event=0x7fff59ef0ef0) at /usr/src/debug/kdelibs-4.10.3/kdeui/kernel/kapplication.cpp:311
#28 0x000000346fb7793e in QCoreApplication::notifyInternal (this=0x141b030, receiver=0x1e13af0, event=0x7fff59ef0ef0) at kernel/qcoreapplication.cpp:949
#29 0x000000305804ec3b in sendEvent (event=0x7fff59ef0ef0, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#30 QX11Data::xdndHandleLeave (this=<optimized out>, w=<optimized out>, xe=0x7fff59ef0f40) at kernel/qdnd_x11.cpp:1064
#31 0x000000305804e94b in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1103
#32 qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1079
#33 0x000000305804f175 in QDragManager::cancel (this=0x1fc4b20, deleteSource=false) at kernel/qdnd_x11.cpp:1407
#34 0x0000003057fdb8ea in QDrag::~QDrag (this=0x4b08580, __in_chrg=<optimized out>) at kernel/qdrag.cpp:132
#35 0x0000003057fdb909 in QDrag::~QDrag (this=0x4b08580, __in_chrg=<optimized out>) at kernel/qdrag.cpp:133
#36 0x000000346fb89f92 in QObjectPrivate::deleteChildren (this=0x244e320) at kernel/qobject.cpp:1907
#37 0x00000030580141c4 in QWidget::~QWidget (this=0x4ce0000, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#38 0x0000003058014519 in QWidget::~QWidget (this=0x4ce0000, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1705
#39 0x000000346fb89f92 in QObjectPrivate::deleteChildren (this=0x38818e0) at kernel/qobject.cpp:1907
#40 0x00000030580141c4 in QWidget::~QWidget (this=0x4a2e0e0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#41 0x00000030585d0a59 in QGraphicsView::~QGraphicsView (this=0x4a2e0e0, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1164
#42 0x000000346fb89f92 in QObjectPrivate::deleteChildren (this=0x37fd310) at kernel/qobject.cpp:1907
#43 0x00000030580141c4 in QWidget::~QWidget (this=0x4b81f00, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#44 0x0000003f73f48a99 in Plasma::Dialog::~Dialog (this=0x4b81f00, __in_chrg=<optimized out>) at /usr/src/debug/kdelibs-4.10.3/plasma/dialog.cpp:413
#45 0x000000346fb8c278 in QObject::event (this=0x4b81f00, e=<optimized out>) at kernel/qobject.cpp:1175
#46 0x000000305801968a in QWidget::event (this=0x4b81f00, event=0x3959b50) at kernel/qwidget.cpp:8845
#47 0x0000003057fca5cc in QApplicationPrivate::notify_helper (this=0x14319d0, receiver=0x4b81f00, e=0x3959b50) at kernel/qapplication.cpp:4562
#48 0x0000003057fcea4a in QApplication::notify (this=0x141b030, receiver=0x4b81f00, e=0x3959b50) at kernel/qapplication.cpp:4423
#49 0x000000305a646f16 in KApplication::notify (this=0x141b030, receiver=0x4b81f00, event=0x3959b50) at /usr/src/debug/kdelibs-4.10.3/kdeui/kernel/kapplication.cpp:311
#50 0x000000346fb7793e in QCoreApplication::notifyInternal (this=0x141b030, receiver=receiver@entry=0x4b81f00, event=event@entry=0x3959b50) at kernel/qcoreapplication.cpp:949
#51 0x000000346fb7b3f1 in sendEvent (event=0x3959b50, receiver=0x4b81f00) at kernel/qcoreapplication.h:231
#52 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x13bc8e0) at kernel/qcoreapplication.cpp:1573
#53 0x000000346fba5df3 in sendPostedEvents () at kernel/qcoreapplication.h:236
#54 postEventSourceDispatch (s=s@entry=0x142d990) at kernel/qeventdispatcher_glib.cpp:279
#55 0x0000003466a47a55 in g_main_dispatch (context=0x1434c20) at gmain.c:2715
#56 g_main_context_dispatch (context=context@entry=0x1434c20) at gmain.c:3219
#57 0x0000003466a47d88 in g_main_context_iterate (context=context@entry=0x1434c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3290
#58 0x0000003466a47e44 in g_main_context_iteration (context=0x1434c20, may_block=1) at gmain.c:3351
#59 0x000000346fba5f86 in QEventDispatcherGlib::processEvents (this=0x13be240, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#60 0x000000305806a73e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#61 0x000000346fb765ef in QEventLoop::processEvents (this=this@entry=0x33605b0, flags=...) at kernel/qeventloop.cpp:149
#62 0x000000346fb76878 in QEventLoop::exec (this=0x33605b0, flags=...) at kernel/qeventloop.cpp:204
#63 0x0000003058052a36 in QDragManager::drag (this=0x1fc4b20, o=<optimized out>) at kernel/qdnd_x11.cpp:2028
#64 0x0000003057fdba58 in QDrag::exec (this=0x4b08580, supportedActions=..., defaultDropAction=defaultDropAction@entry=Qt::IgnoreAction) at kernel/qdrag.cpp:284
#65 0x0000003057fdbb13 in QDrag::exec (this=<optimized out>, supportedActions=...) at kernel/qdrag.cpp:239
#66 0x00007f72bbf4c41a in AbstractTaskItem::mouseMoveEvent (this=0x39b92a0, event=<optimized out>) at /usr/src/debug/kde-workspace-4.10.3/plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#67 0x00000030585861ed in QGraphicsItem::sceneEvent (this=0x39b92b0, event=0x7fff59ef2780) at graphicsview/qgraphicsitem.cpp:6736
#68 0x00000030585b0190 in QGraphicsScenePrivate::sendMouseEvent (this=0x143aec0, mouseEvent=0x7fff59ef2780) at graphicsview/qgraphicsscene.cpp:1295
#69 0x00000030585b0ccc in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fff59ef2780) at graphicsview/qgraphicsscene.cpp:4102
#70 0x00000030585c2fe0 in QGraphicsScene::event (this=0x1588f90, event=0x7fff59ef2780) at graphicsview/qgraphicsscene.cpp:3451
#71 0x0000003057fca5cc in QApplicationPrivate::notify_helper (this=0x14319d0, receiver=0x1588f90, e=0x7fff59ef2780) at kernel/qapplication.cpp:4562
#72 0x0000003057fcea4a in QApplication::notify (this=0x141b030, receiver=0x1588f90, e=0x7fff59ef2780) at kernel/qapplication.cpp:4423
#73 0x000000305a646f16 in KApplication::notify (this=0x141b030, receiver=0x1588f90, event=0x7fff59ef2780) at /usr/src/debug/kdelibs-4.10.3/kdeui/kernel/kapplication.cpp:311
#74 0x000000346fb7793e in QCoreApplication::notifyInternal (this=0x141b030, receiver=0x1588f90, event=0x7fff59ef2780) at kernel/qcoreapplication.cpp:949
#75 0x00000030585d61c4 in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x38818e0, event=event@entry=0x7fff59ef31b0) at graphicsview/qgraphicsview.cpp:646
#76 0x00000030585d923e in QGraphicsView::mouseMoveEvent (this=0x4a2e0e0, event=0x7fff59ef31b0) at graphicsview/qgraphicsview.cpp:3276
#77 0x0000003058019f7b in QWidget::event (this=0x4a2e0e0, event=0x7fff59ef31b0) at kernel/qwidget.cpp:8360
#78 0x00000030583c49f6 in QFrame::event (this=0x4a2e0e0, e=0x7fff59ef31b0) at widgets/qframe.cpp:557
#79 0x00000030585dc56b in QGraphicsView::viewportEvent (this=0x4a2e0e0, event=0x7fff59ef31b0) at graphicsview/qgraphicsview.cpp:2866
#80 0x000000346fb77aa6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x4ce0000, event=0x7fff59ef31b0) at kernel/qcoreapplication.cpp:1059
#81 0x0000003057fca59c in QApplicationPrivate::notify_helper (this=0x14319d0, receiver=0x4ce0000, e=0x7fff59ef31b0) at kernel/qapplication.cpp:4558
#82 0x0000003057fcf2ab in QApplication::notify (this=<optimized out>, receiver=0x4ce0000, e=0x7fff59ef31b0) at kernel/qapplication.cpp:4105
#83 0x000000305a646f16 in KApplication::notify (this=0x141b030, receiver=0x4ce0000, event=0x7fff59ef31b0) at /usr/src/debug/kdelibs-4.10.3/kdeui/kernel/kapplication.cpp:311
#84 0x000000346fb7793e in QCoreApplication::notifyInternal (this=0x141b030, receiver=0x4ce0000, event=0x7fff59ef31b0) at kernel/qcoreapplication.cpp:949
#85 0x0000003057fcb40b in QApplicationPrivate::sendMouseEvent (receiver=0x4ce0000, event=0x7fff59ef31b0, alienWidget=0x4ce0000, nativeWidget=0x4b81f00, buttonDown=0x3058a9e268 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:231
#86 0x0000003058045a3c in QETWidget::translateMouseEvent (this=0x4b81f00, event=<optimized out>) at kernel/qapplication_x11.cpp:4471
#87 0x0000003058044901 in QApplication::x11ProcessEvent (this=0x141b030, event=0x7fff59ef3920) at kernel/qapplication_x11.cpp:3660
#88 0x000000305806aa5c in x11EventSourceDispatch (s=s@entry=0x1435070, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#89 0x0000003466a47a55 in g_main_dispatch (context=0x1434c20) at gmain.c:2715
#90 g_main_context_dispatch (context=context@entry=0x1434c20) at gmain.c:3219
#91 0x0000003466a47d88 in g_main_context_iterate (context=context@entry=0x1434c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3290
#92 0x0000003466a47e44 in g_main_context_iteration (context=0x1434c20, may_block=1) at gmain.c:3351
#93 0x000000346fba5f86 in QEventDispatcherGlib::processEvents (this=0x13be240, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#94 0x000000305806a73e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#95 0x000000346fb765ef in QEventLoop::processEvents (this=this@entry=0x7fff59ef3cf0, flags=...) at kernel/qeventloop.cpp:149
#96 0x000000346fb76878 in QEventLoop::exec (this=0x7fff59ef3cf0, flags=...) at kernel/qeventloop.cpp:204
#97 0x000000346fb7b708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1221
#98 0x0000003f74c3d611 in kdemain (argc=1, argv=0x7fff59ef3fe8) at /usr/src/debug/kde-workspace-4.10.3/plasma/desktop/shell/main.cpp:126
#99 0x0000003464221a05 in __libc_start_main (main=0x400940 <main(int, char**)>, argc=1, ubp_av=0x7fff59ef3fe8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff59ef3fd8) at libc-start.c:225
#100 0x0000000000400971 in _start ()

Reported using DrKonqi
Comment 1 titombitel 2013-06-03 23:18:55 UTC 
It reproduced 2 times but now is no longer reproducible.
The crashes occured shortly after application and workspace apperance customisations. However, few minutes later I am unable to reproduce and my application and workspace  apperance are still modified.
Comment 2 Martin Flöser 2013-06-06 10:16:54 UTC 
crash is deep down in Qt