Application: plasma-desktop (4.12.2)
KDE Platform Version: 4.12.2
Qt Version: 4.8.6
Operating System: Linux 3.13.0-8-generic x86_64
Distribution: Ubuntu Trusty Tahr (development branch)

-- Information about the crash:
when is was switching activites , plasmoid crashed but started back up straight away . then the bug report popped up

-- 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 0x7ff681fec7c0 (LWP 2557))]

Thread 5 (Thread 0x7ff653ef9700 (LWP 2558)):
#0  0x00007ff6818d974d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ff674e2ed64 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff674e2ee6c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff67e4ad836 in QEventDispatcherGlib::processEvents (this=0x7ff64c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#4  0x00007ff67e47f09f in QEventLoop::processEvents (this=this@entry=0x7ff653ef8de0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007ff67e47f395 in QEventLoop::exec (this=this@entry=0x7ff653ef8de0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007ff67e37bc4f in QThread::exec (this=this@entry=0x1f2cac0) at thread/qthread.cpp:537
#7  0x00007ff67e460813 in QInotifyFileSystemWatcherEngine::run (this=0x1f2cac0) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007ff67e37e31f in QThreadPrivate::start (arg=0x1f2cac0) at thread/qthread_unix.cpp:349
#9  0x00007ff67553a182 in start_thread (arg=0x7ff653ef9700) at pthread_create.c:312
#10 0x00007ff6818e6b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7ff6536f8700 (LWP 2559)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ff67ac8dffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007ff67ac8e039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007ff67553a182 in start_thread (arg=0x7ff6536f8700) at pthread_create.c:312
#4  0x00007ff6818e6b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7ff651152700 (LWP 2560)):
#0  0x00007ff674e6f31a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff674e6f689 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff674e2def0 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff674e2ec25 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff674e2ee6c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff67e4ad836 in QEventDispatcherGlib::processEvents (this=0x7ff5c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#6  0x00007ff67e47f09f in QEventLoop::processEvents (this=this@entry=0x7ff651151de0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007ff67e47f395 in QEventLoop::exec (this=this@entry=0x7ff651151de0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007ff67e37bc4f in QThread::exec (this=this@entry=0x2238f40) at thread/qthread.cpp:537
#9  0x00007ff67e460813 in QInotifyFileSystemWatcherEngine::run (this=0x2238f40) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007ff67e37e31f in QThreadPrivate::start (arg=0x2238f40) at thread/qthread_unix.cpp:349
#11 0x00007ff67553a182 in start_thread (arg=0x7ff651152700) at pthread_create.c:312
#12 0x00007ff6818e6b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7ff5c233f700 (LWP 2564)):
#0  0x00007fff13bfe988 in ?? ()
#1  0x000000007fffffff in ?? ()
#2  0x00007ff67e4aee7e in QTimerInfoList::repairTimersIfNeeded (this=0xffffffffffdff000) at kernel/qeventdispatcher_unix.cpp:413
#3  0x00007ff67e4ada90 in ?? () at kernel/qeventdispatcher_glib.cpp:227 from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007ff5c233ec30 in ?? ()
#5  0x00007ff6818f4fdd in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#6  0x00007ff67e3d2ac7 in do_gettime (frac=0x7ff5c233ebc0, sec=0x7ff5c233ebb8) at tools/qelapsedtimer_unix.cpp:127
#7  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#8  0x00007ff67e4aeb49 in QTimerInfoList::updateCurrentTime (this=0x0, this@entry=0x7ff5bc002860) at kernel/qeventdispatcher_unix.cpp:354
#9  0x00007ff67e4ada1b in timerSourceCheckHelper (src=0x7ff5bc002800) at kernel/qeventdispatcher_glib.cpp:150
#10 0x00007ff674e2e7e1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ff674e2ecfb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ff674e2ee6c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007ff67e4ad836 in QEventDispatcherGlib::processEvents (this=0x7ff5bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#14 0x00007ff67e47f09f in QEventLoop::processEvents (this=this@entry=0x7ff5c233ede0, flags=...) at kernel/qeventloop.cpp:149
#15 0x00007ff67e47f395 in QEventLoop::exec (this=this@entry=0x7ff5c233ede0, flags=...) at kernel/qeventloop.cpp:204
#16 0x00007ff67e37bc4f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#17 0x00007ff5ca3f4027 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#18 0x00007ff67e37e31f in QThreadPrivate::start (arg=0x2509ce0) at thread/qthread_unix.cpp:349
#19 0x00007ff67553a182 in start_thread (arg=0x7ff5c233f700) at pthread_create.c:312
#20 0x00007ff6818e6b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7ff681fec7c0 (LWP 2557)):
[KCrash Handler]
#6  0x00007ff68007e054 in QDeclarativeItem::~QDeclarativeItem (this=0x4b7be90, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007ff6527c0aa1 in ~QDeclarativeElement (this=0x4b7be90, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:92
#8  QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=0x4b7be90, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:92
#9  0x00007ff67e498c48 in QObject::event (this=0x4b7be90, e=<optimized out>) at kernel/qobject.cpp:1175
#10 0x00007ff67d817e2c in QApplicationPrivate::notify_helper (this=this@entry=0xf07ad0, receiver=receiver@entry=0x4b7be90, e=e@entry=0x16c2990) at kernel/qapplication.cpp:4567
#11 0x00007ff67d81e4a0 in QApplication::notify (this=this@entry=0xeefc10, receiver=receiver@entry=0x4b7be90, e=e@entry=0x16c2990) at kernel/qapplication.cpp:4353
#12 0x00007ff67f146aaa in KApplication::notify (this=0xeefc10, receiver=0x4b7be90, event=0x16c2990) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007ff67e4804cd in QCoreApplication::notifyInternal (this=0xeefc10, receiver=receiver@entry=0x4b7be90, event=event@entry=0x16c2990) at kernel/qcoreapplication.cpp:953
#14 0x00007ff67e483b2d in sendEvent (event=0x16c2990, receiver=0x4b7be90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xe821f0) at kernel/qcoreapplication.cpp:1577
#16 0x00007ff67e483fd3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#17 0x00007ff67e4adf53 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=0xf0b940) at kernel/qeventdispatcher_glib.cpp:280
#19 0x00007ff674e2eb84 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007ff674e2edc8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007ff674e2ee6c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007ff67e4ad815 in QEventDispatcherGlib::processEvents (this=0xf0b6f0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#23 0x00007ff67d8b9bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007ff67e47f09f in QEventLoop::processEvents (this=this@entry=0x7fff13bd82c0, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007ff67e47f395 in QEventLoop::exec (this=this@entry=0x7fff13bd82c0, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007ff67e484b69 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#27 0x00007ff67d81637c in QApplication::exec () at kernel/qapplication.cpp:3828
#28 0x00007ff681bef65c in kdemain (argc=1, argv=0x7fff13bd8518) at ../../../../plasma/desktop/shell/main.cpp:126
#29 0x00007ff68180ded5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7fff13bd8518, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff13bd8508) at libc-start.c:287
#30 0x000000000040070e in _start ()

Possible duplicates by query: bug 331058, bug 331014, bug 330915, bug 330903, bug 330670.

Reported using DrKonqi