Application: plasma-desktop (0.4)
KDE Platform Version: 4.9.4
Qt Version: 4.8.3
Operating System: Linux 3.5.0-19-generic x86_64
Distribution: Ubuntu 12.10

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

I started a new activity. When the activity started to run it's previously open applications, plasma crashed

The crash can be reproduced some of the time.

-- Backtrace:
Application: Κέλυφος επιφάνειας εργασίας (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4043612780 (LWP 6030))]

Thread 4 (Thread 0x7f40239e4700 (LWP 6032)):
#0  0x00007f4036bdd9e3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4036bddc59 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4036ba0c5c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4036ba0ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f403fbafc16 in QEventDispatcherGlib::processEvents (this=0x7f401c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f403fb802bf in QEventLoop::processEvents (this=this@entry=0x7f40239e3dd0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f403fb80548 in QEventLoop::exec (this=0x7f40239e3dd0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f403fa81b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x00007f403fb609af in QInotifyFileSystemWatcherEngine::run (this=0x27134b0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f403fa84aec in QThreadPrivate::start (arg=0x27134b0) at thread/qthread_unix.cpp:338
#10 0x00007f403729fe9a in start_thread (arg=0x7f40239e4700) at pthread_create.c:308
#11 0x00007f4042f0ccbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f4012920700 (LWP 6036)):
#0  0x00007fff7a9ff827 in clock_gettime ()
#1  0x00007f4038a8e15d in __GI_clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:116
#2  0x00007f403fada9c4 in do_gettime (frac=0x7f401291fb28, sec=0x7f401291fb20) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007f403fbb041d in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f400c002860) at kernel/qeventdispatcher_unix.cpp:343
#5  0x00007f403fbb0763 in QTimerInfoList::timerWait (this=0x7f400c002860, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#6  0x00007f403fbaf2cc in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7f401291fc14) at kernel/qeventdispatcher_glib.cpp:136
#7  0x00007f403fbaf375 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007f4036ba0618 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f4036ba0cab in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f4036ba0ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f403fbafc16 in QEventDispatcherGlib::processEvents (this=0x7f400c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0x00007f403fb802bf in QEventLoop::processEvents (this=this@entry=0x7f401291fdd0, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007f403fb80548 in QEventLoop::exec (this=0x7f401291fdd0, flags=...) at kernel/qeventloop.cpp:204
#14 0x00007f403fa81b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#15 0x00007f403fb609af in QInotifyFileSystemWatcherEngine::run (this=0x2bfe310) at io/qfilesystemwatcher_inotify.cpp:248
#16 0x00007f403fa84aec in QThreadPrivate::start (arg=0x2bfe310) at thread/qthread_unix.cpp:338
#17 0x00007f403729fe9a in start_thread (arg=0x7f4012920700) at pthread_create.c:308
#18 0x00007f4042f0ccbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#19 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f400bfff700 (LWP 6040)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f403cc06cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f403cc06d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f403729fe9a in start_thread (arg=0x7f400bfff700) at pthread_create.c:308
#4  0x00007f4042f0ccbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4043612780 (LWP 6030)):
[KCrash Handler]
#6  0x00007f4041774dd4 in QDeclarativeItem::~QDeclarativeItem (this=0x7db6fa0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007f400b5e3311 in ~QDeclarativeElement (this=0x7db6fa0, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=0x7db6fa0, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#9  0x00007f403fb96468 in QObject::event (this=0x7db6fa0, e=<optimized out>) at kernel/qobject.cpp:1176
#10 0x00007f403ef28e9c in QApplicationPrivate::notify_helper (this=this@entry=0x20667f0, receiver=receiver@entry=0x7db6fa0, e=e@entry=0x81fda40) at kernel/qapplication.cpp:4562
#11 0x00007f403ef2d30a in QApplication::notify (this=0x1fd7790, receiver=0x7db6fa0, e=0x81fda40) at kernel/qapplication.cpp:4423
#12 0x00007f404083a1d6 in KApplication::notify (this=0x1fd7790, receiver=0x7db6fa0, event=0x81fda40) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007f403fb8156e in QCoreApplication::notifyInternal (this=0x1fd7790, receiver=receiver@entry=0x7db6fa0, event=event@entry=0x81fda40) at kernel/qcoreapplication.cpp:915
#14 0x00007f403fb853f1 in sendEvent (event=0x81fda40, receiver=0x7db6fa0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1fa11f0) at kernel/qcoreapplication.cpp:1539
#16 0x00007f403fbafa63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#17 postEventSourceDispatch (s=0x206a400) at kernel/qeventdispatcher_glib.cpp:279
#18 0x00007f4036ba0ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f4036ba0de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f4036ba0ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f403fbafbf6 in QEventDispatcherGlib::processEvents (this=0x1fa2ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#22 0x00007f403efcdc1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007f403fb802bf in QEventLoop::processEvents (this=this@entry=0x746ee40, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007f403fb80548 in QEventLoop::exec (this=0x746ee40, flags=...) at kernel/qeventloop.cpp:204
#25 0x00007f3ff35b2efc in QOAuth::InterfacePrivate::sendRequest(QString const&, QOAuth::HttpMethod, QOAuth::SignatureMethod, QByteArray const&, QByteArray const&, QMultiMap<QByteArray, QByteArray> const&) () from /usr/lib/libqoauth.so.1
#26 0x00007f3ff35b32b7 in QOAuth::Interface::requestToken(QString const&, QOAuth::HttpMethod, QOAuth::SignatureMethod, QMultiMap<QByteArray, QByteArray> const&) () from /usr/lib/libqoauth.so.1
#27 0x00007f3ff37da053 in KOAuth::KOAuth::requestTokenFromService (this=this@entry=0x71d6190) at ../../../dataengines/microblog/koauth.cpp:206
#28 0x00007f3ff37da990 in KOAuth::KOAuth::authorize (this=0x71d6190, serviceBaseUrl=..., user=..., password=...) at ../../../dataengines/microblog/koauth.cpp:187
#29 0x00007f3ff37daa54 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at ./koauth.moc:76
#30 KOAuth::KOAuth::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./koauth.moc:64
#31 0x00007f403fb96f5f in QMetaObject::activate (sender=0x73a61f0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff7a983660) at kernel/qobject.cpp:3547
#32 0x00007f3ff37c558c in TimelineSource::authorize (this=this@entry=0x73a61f0, _t1=..., _t2=..., _t3=...) at ./timelinesource.moc:134
#33 0x00007f3ff37c55d9 in TimelineSource::startAuthorization (this=0x73a61f0, user=..., password=...) at ../../../dataengines/microblog/timelinesource.cpp:168
#34 0x00007f3ff37cf4e9 in TimelineService::createJob (this=0x7b26830, operation=..., parameters=...) at ../../../dataengines/microblog/timelineservice.cpp:67
#35 0x00007f4042abc02d in Plasma::Service::startOperationCall (this=0x7b26830, description=..., parent=0x0) at ../../plasma/service.cpp:238
#36 0x00007f3ff8045fda in downloadHistory (this=0x7588d20) at ../../../applets/microblog/microblog.cpp:939
#37 MicroBlog::downloadHistory (this=0x7588d20) at ../../../applets/microblog/microblog.cpp:920
#38 0x00007f3ff80464c0 in MicroBlog::readWallet (this=0x7588d20, success=<optimized out>) at ../../../applets/microblog/microblog.cpp:516
#39 0x00007f3ff8049d24 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at ./microblog.moc:90
#40 MicroBlog::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./microblog.moc:81
#41 0x00007f403fb96f5f in QMetaObject::activate (sender=0x7f1ee40, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff7a983b80) at kernel/qobject.cpp:3547
#42 0x00007f40409459f2 in KWallet::Wallet::walletOpened (this=<optimized out>, _t1=true) at ./kwallet.moc:167
#43 0x00007f403fb96f5f in QMetaObject::activate (sender=0x2f40d10, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff7a983cd0) at kernel/qobject.cpp:3547
#44 0x00007f4040973aaf in OrgKdeKWalletInterface::walletAsyncOpened (this=<optimized out>, _t1=2, _t2=2096665977) at kwallet_interface.moc:324
#45 0x00007f40409761e6 in OrgKdeKWalletInterface::qt_static_metacall (_o=0x2f40d10, _id=<optimized out>, _a=0x7fff7a984540, _c=<optimized out>) at kwallet_interface.moc:162
#46 0x00007f40409762eb in OrgKdeKWalletInterface::qt_metacall (this=0x2f40d10, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff7a984540) at kwallet_interface.moc:287
#47 0x00007f403fefced3 in QDBusConnectionPrivate::deliverCall (this=0x204f0d0, object=0x2f40d10, msg=..., metaTypes=..., slotIdx=9) at qdbusintegrator.cpp:947
#48 0x00007f403fb9643e in QObject::event (this=0x2f40d10, e=<optimized out>) at kernel/qobject.cpp:1195
#49 0x00007f403ef28e9c in QApplicationPrivate::notify_helper (this=this@entry=0x20667f0, receiver=receiver@entry=0x2f40d10, e=e@entry=0x87469d0) at kernel/qapplication.cpp:4562
#50 0x00007f403ef2d30a in QApplication::notify (this=0x1fd7790, receiver=0x2f40d10, e=0x87469d0) at kernel/qapplication.cpp:4423
#51 0x00007f404083a1d6 in KApplication::notify (this=0x1fd7790, receiver=0x2f40d10, event=0x87469d0) at ../../kdeui/kernel/kapplication.cpp:311
#52 0x00007f403fb8156e in QCoreApplication::notifyInternal (this=0x1fd7790, receiver=receiver@entry=0x2f40d10, event=event@entry=0x87469d0) at kernel/qcoreapplication.cpp:915
#53 0x00007f403fb853f1 in sendEvent (event=0x87469d0, receiver=0x2f40d10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#54 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1fa11f0) at kernel/qcoreapplication.cpp:1539
#55 0x00007f403fbafa63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#56 postEventSourceDispatch (s=0x206a400) at kernel/qeventdispatcher_glib.cpp:279
#57 0x00007f4036ba0ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007f4036ba0de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007f4036ba0ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#60 0x00007f403fbafbf6 in QEventDispatcherGlib::processEvents (this=0x1fa2ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#61 0x00007f403efcdc1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#62 0x00007f403fb802bf in QEventLoop::processEvents (this=this@entry=0x7fff7a984ec0, flags=...) at kernel/qeventloop.cpp:149
#63 0x00007f403fb80548 in QEventLoop::exec (this=0x7fff7a984ec0, flags=...) at kernel/qeventloop.cpp:204
#64 0x00007f403fb85708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#65 0x00007f4043213035 in kdemain (argc=1, argv=0x7fff7a9851b8) at ../../../../plasma/desktop/shell/main.cpp:120
#66 0x00007f4042e3a76d in __libc_start_main (main=0x4006a0 <main(int, char**)>, argc=1, ubp_av=0x7fff7a9851b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff7a9851a8) at libc-start.c:226
#67 0x00000000004006d1 in _start ()

Possible duplicates by query: bug 311239, bug 310997, bug 310686, bug 310440, bug 310126.

Reported using DrKonqi