Application: plasma-desktop (4.10.5)
KDE Platform Version: 4.10.5
Qt Version: 4.8.4
Operating System: Linux 3.8.0-26-generic x86_64
Distribution: Linux Mint 15 Olivia

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

Hit alt tab to attempt to switch to another program, while editing Panel Settings was open to "Add Widget"

- Custom settings of the application:
Glass theme

The crash does not seem to be reproducible.

-- 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 0x7ff592feb7c0 (LWP 1920))]

Thread 10 (Thread 0x7ff574017700 (LWP 1922)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ff58bd10e77 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007ff58bd10ea9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007ff58640bf8e in start_thread (arg=0x7ff574017700) at pthread_create.c:311
#4  0x00007ff5928cce1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 9 (Thread 0x7ff56bb6a700 (LWP 1923)):
#0  0x00007ff5928c03cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ff585d091dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff585d09304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff58f4ad036 in QEventDispatcherGlib::processEvents (this=0x7ff5640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007ff58f47d38f in QEventLoop::processEvents (this=this@entry=0x7ff56bb69d90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007ff58f47d618 in QEventLoop::exec (this=this@entry=0x7ff56bb69d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007ff58f37f410 in QThread::exec (this=this@entry=0xcf2380) at thread/qthread.cpp:542
#7  0x00007ff58f45eedf in QInotifyFileSystemWatcherEngine::run (this=0xcf2380) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007ff58f381bec in QThreadPrivate::start (arg=0xcf2380) at thread/qthread_unix.cpp:338
#9  0x00007ff58640bf8e in start_thread (arg=0x7ff56bb6a700) at pthread_create.c:311
#10 0x00007ff5928cce1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 8 (Thread 0x7ff5637fe700 (LWP 1925)):
#0  __pthread_mutex_unlock_usercnt (mutex=0x7ff55c00d260, decr=1) at pthread_mutex_unlock.c:38
#1  0x00007ff585d485f1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff585d091d1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff585d096ba in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff5683e34f6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007ff585d2ceb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ff58640bf8e in start_thread (arg=0x7ff5637fe700) at pthread_create.c:311
#7  0x00007ff5928cce1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 7 (Thread 0x7ff561d4b700 (LWP 1928)):
#0  0x00007fffc089eaf7 in ?? ()
#1  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7ff55145a700 (LWP 1932)):
#0  0x00007ff58640f07f in __pthread_mutex_unlock_usercnt (mutex=0x7ff548000a60, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  0x00007ff585d485f1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff585d088f3 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff585d090fe in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff585d09304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff58f4ad036 in QEventDispatcherGlib::processEvents (this=0x7ff5480008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007ff58f47d38f in QEventLoop::processEvents (this=this@entry=0x7ff551459d80, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007ff58f47d618 in QEventLoop::exec (this=this@entry=0x7ff551459d80, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007ff58f37f410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007ff5533976e5 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#10 0x00007ff58f381bec in QThreadPrivate::start (arg=0x208e130) at thread/qthread_unix.cpp:338
#11 0x00007ff58640bf8e in start_thread (arg=0x7ff55145a700) at pthread_create.c:311
#12 0x00007ff5928cce1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7ff563fff700 (LWP 2349)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ff58f38214b in wait (time=18446744073709551615, this=0x144b460) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x14e6ce8, mutex=0x13e8cf0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ff58af96041 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x14e6cc0, th=0x14fad60) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007ff58af9894b in ThreadWeaver::WorkingHardState::applyForWork (this=0x13ece30, th=0x14fad60) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007ff58af9763f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7ff563ffedc0, parent=0x14e6cc0, th=th@entry=0x14fad60) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007ff58af976cb in ThreadWeaver::Thread::run (this=0x14fad60) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007ff58f381bec in QThreadPrivate::start (arg=0x14fad60) at thread/qthread_unix.cpp:338
#8  0x00007ff58640bf8e in start_thread (arg=0x7ff563fff700) at pthread_create.c:311
#9  0x00007ff5928cce1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7ff547354700 (LWP 2350)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ff58f38214b in wait (time=18446744073709551615, this=0x144b460) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x14e6ce8, mutex=0x13e8cf0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ff58af96041 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x14e6cc0, th=0x3843f30) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007ff58af9894b in ThreadWeaver::WorkingHardState::applyForWork (this=0x13ece30, th=0x3843f30) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007ff58af98964 in ThreadWeaver::WorkingHardState::applyForWork (this=0x13ece30, th=0x3843f30) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007ff58af9763f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7ff547353dc0, parent=0x14e6cc0, th=th@entry=0x3843f30) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007ff58af976cb in ThreadWeaver::Thread::run (this=0x3843f30) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007ff58f381bec in QThreadPrivate::start (arg=0x3843f30) at thread/qthread_unix.cpp:338
#9  0x00007ff58640bf8e in start_thread (arg=0x7ff547354700) at pthread_create.c:311
#10 0x00007ff5928cce1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7ff5452b7700 (LWP 2351)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ff58f38214b in wait (time=18446744073709551615, this=0x144b460) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x14e6ce8, mutex=0x13e8cf0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ff58af96041 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x14e6cc0, th=0x1a04d60) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007ff58af9894b in ThreadWeaver::WorkingHardState::applyForWork (this=0x13ece30, th=0x1a04d60) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007ff58af9763f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7ff5452b6dc0, parent=0x14e6cc0, th=th@entry=0x1a04d60) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007ff58af976cb in ThreadWeaver::Thread::run (this=0x1a04d60) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007ff58f381bec in QThreadPrivate::start (arg=0x1a04d60) at thread/qthread_unix.cpp:338
#8  0x00007ff58640bf8e in start_thread (arg=0x7ff5452b7700) at pthread_create.c:311
#9  0x00007ff5928cce1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7ff544ab6700 (LWP 2352)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ff58f38214b in wait (time=18446744073709551615, this=0x144b460) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x14e6ce8, mutex=0x13e8cf0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ff58af96041 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x14e6cc0, th=0xb6a380) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007ff58af9894b in ThreadWeaver::WorkingHardState::applyForWork (this=0x13ece30, th=0xb6a380) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007ff58af9763f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7ff544ab5dc0, parent=0x14e6cc0, th=th@entry=0xb6a380) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007ff58af976cb in ThreadWeaver::Thread::run (this=0xb6a380) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007ff58f381bec in QThreadPrivate::start (arg=0xb6a380) at thread/qthread_unix.cpp:338
#8  0x00007ff58640bf8e in start_thread (arg=0x7ff544ab6700) at pthread_create.c:311
#9  0x00007ff5928cce1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7ff592feb7c0 (LWP 1920)):
[KCrash Handler]
#6  0x00007ff591077944 in QDeclarativeItem::~QDeclarativeItem (this=0x434f6e0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007ff57319ab11 in ~QDeclarativeElement (this=0x434f6e0, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=0x434f6e0, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#9  0x00007ff58f4985e8 in QObject::event (this=0x434f6e0, e=<optimized out>) at kernel/qobject.cpp:1175
#10 0x00007ff58e8248ec in QApplicationPrivate::notify_helper (this=this@entry=0xbbd7c0, receiver=receiver@entry=0x434f6e0, e=e@entry=0x4d36a30) at kernel/qapplication.cpp:4567
#11 0x00007ff58e82725b in QApplication::notify (this=this@entry=0xbba260, receiver=receiver@entry=0x434f6e0, e=e@entry=0x4d36a30) at kernel/qapplication.cpp:4428
#12 0x00007ff5901421a6 in KApplication::notify (this=0xbba260, receiver=0x434f6e0, event=0x4d36a30) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007ff58f47e63e in QCoreApplication::notifyInternal (this=0xbba260, receiver=receiver@entry=0x434f6e0, event=event@entry=0x4d36a30) at kernel/qcoreapplication.cpp:946
#14 0x00007ff58f482171 in sendEvent (event=0x4d36a30, receiver=0x434f6e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xb301f0) at kernel/qcoreapplication.cpp:1570
#16 0x00007ff58f4824a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#17 0x00007ff58f4ace83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=0xb9e8c0) at kernel/qeventdispatcher_glib.cpp:279
#19 0x00007ff585d08f05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007ff585d09248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007ff585d09304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007ff58f4ad016 in QEventDispatcherGlib::processEvents (this=0xba6340, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007ff58e8ca1ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007ff58f47d38f in QEventLoop::processEvents (this=this@entry=0x7fffc08480b0, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007ff58f47d618 in QEventLoop::exec (this=this@entry=0x7fffc08480b0, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007ff58f482cf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#27 0x00007ff58e822ffc in QApplication::exec () at kernel/qapplication.cpp:3828
#28 0x00007ff592bd846b in kdemain (argc=1, argv=0x7fffc08483a8) at ../../../../plasma/desktop/shell/main.cpp:126
#29 0x00007ff5927f4ea5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, ubp_av=0x7fffc08483a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffc0848398) at libc-start.c:260
#30 0x0000000000400711 in _start ()

Possible duplicates by query: bug 323497, bug 322872, bug 322687, bug 322085, bug 321630.

Reported using DrKonqi