Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.5 (4.6.5)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
When I click on lock icon on the plasmoïde  "Vérouillage / Deconnexion"

The crash can be reproduced every time.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7863ad0 (LWP 1386))]

Thread 5 (Thread 0xb3f54b70 (LWP 1387)):
#0  0x0087c416 in __kernel_vsyscall ()
#1  0x037a548c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x00b4e3fd in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x07e51817 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f651c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x07e51851 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f651c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x037a0e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x00b4073e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xad7ffb70 (LWP 1390)):
#0  0x01843d41 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x01f82dd8 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x0204f4f2 in updateCurrentTime (this=0xad802bbc, tm=...) at kernel/qeventdispatcher_unix.cpp:339
#4  QTimerInfoList::timerWait (this=0xad802bbc, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x0204dd32 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xad7ff0cc) at kernel/qeventdispatcher_glib.cpp:136
#6  0x0204ddcd in timerSourcePrepare (source=0xad802b88, timeout=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x01beffd4 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x01bf0e63 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x01bf1524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x0204e577 in QEventDispatcherGlib::processEvents (this=0xaab8700, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x02020289 in QEventLoop::processEvents (this=0xad7ff280, flags=...) at kernel/qeventloop.cpp:149
#12 0x02020522 in QEventLoop::exec (this=0xad7ff280, flags=...) at kernel/qeventloop.cpp:201
#13 0x01f2a2a0 in QThread::exec (this=0xaaba0a0) at thread/qthread.cpp:492
#14 0x02001fdb in QInotifyFileSystemWatcherEngine::run (this=0xaaba0a0) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x01f2cda2 in QThreadPrivate::start (arg=0xaaba0a0) at thread/qthread_unix.cpp:320
#16 0x037a0e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x00b4073e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xac1bdb70 (LWP 1391)):
#0  0x0087c416 in __kernel_vsyscall ()
#1  0x00b31f76 in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0x01c0184b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x01bf11af in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x01bf1524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x0204e577 in QEventDispatcherGlib::processEvents (this=0xab3c0c8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x02020289 in QEventLoop::processEvents (this=0xac1bd280, flags=...) at kernel/qeventloop.cpp:149
#7  0x02020522 in QEventLoop::exec (this=0xac1bd280, flags=...) at kernel/qeventloop.cpp:201
#8  0x01f2a2a0 in QThread::exec (this=0xab3a9a8) at thread/qthread.cpp:492
#9  0x02001fdb in QInotifyFileSystemWatcherEngine::run (this=0xab3a9a8) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x01f2cda2 in QThreadPrivate::start (arg=0xab3a9a8) at thread/qthread_unix.cpp:320
#11 0x037a0e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x00b4073e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xaa9a9b70 (LWP 1397)):
#0  0x0087c416 in __kernel_vsyscall ()
#1  0x00b31f76 in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0x01c0184b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x01bf11af in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x01bf192b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x048ca304 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0x01c1a2df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0x037a0e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0x00b4073e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb7863ad0 (LWP 1386)):
[KCrash Handler]
#7  0x402276ff in ?? ()
#8  0x02038714 in QObject::connect (sender=0xa807628, signal=0x36a4ce "2destroyed(QObject*)", receiver=0xa08d240, method=0x37adf3 "1onWidgetDestroyed(QObject*)", type=Qt::AutoConnection) at kernel/qobject.cpp:2498
#9  0x00294a5b in Plasma::ToolTipManager::registerWidget (this=0xa08d240, widget=0xa807628) at ../../plasma/tooltipmanager.cpp:203
#10 0x00294b4d in Plasma::ToolTipManager::setContent (this=0xa08d240, widget=0xa807628, data=...) at ../../plasma/tooltipmanager.cpp:222
#11 0x04c0fe41 in ?? () from /usr/lib/pymodules/python2.7/PyKDE4/plasma.so
#12 0x072b931a in PyCFunction_Call (func=0xb5ad54c, arg=0xb5e7b4c, kw=0x0) at ../Objects/methodobject.c:81
#13 0x07320500 in call_function (f=0xb689274, throwflag=0) at ../Python/ceval.c:4013
#14 PyEval_EvalFrameEx (f=0xb689274, throwflag=0) at ../Python/ceval.c:2666
#15 0x073224c8 in PyEval_EvalCodeEx (co=0xb02ae78, globals=0xb0bca44, locals=0x0, args=0xb7ee02c, argcount=3, kws=0xb7ee038, kwcount=0, defs=0xb0d7a58, defcount=1, closure=0x0) at ../Python/ceval.c:3253
#16 0x07320722 in fast_function (f=0xb7edecc, throwflag=0) at ../Python/ceval.c:4109
#17 call_function (f=0xb7edecc, throwflag=0) at ../Python/ceval.c:4034
#18 PyEval_EvalFrameEx (f=0xb7edecc, throwflag=0) at ../Python/ceval.c:2666
#19 0x073224c8 in PyEval_EvalCodeEx (co=0xb0305c0, globals=0xb0bca44, locals=0x0, args=0xb5cf518, argcount=2, kws=0x0, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3253
#20 0x072a0c17 in function_call (func=0xb5954fc, arg=0xb5cf50c, kw=0x0) at ../Objects/funcobject.c:526
#21 0x0727408c in PyObject_Call (func=0xb5954fc, arg=0xb5cf50c, kw=0x0) at ../Objects/abstract.c:2529
#22 0x07286c0c in instancemethod_call (func=0xb5954fc, arg=0xb5cf50c, kw=0x0) at ../Objects/classobject.c:2578
#23 0x0727408c in PyObject_Call (func=0xb5da054, arg=0xa764bac, kw=0x0) at ../Objects/abstract.c:2529
#24 0x0731b508 in PyEval_CallObjectWithKeywords (func=0xb5da054, arg=0xa764bac, kw=0x0) at ../Python/ceval.c:3882
#25 0x087152ef in sip_api_invoke_slot () from /usr/lib/pymodules/python2.7/sip.so
#26 0x03f60c2a in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#27 0x03f60d35 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#28 0x020276ba in QMetaObject::metacall (object=0xb8293e0, cl=QMetaObject::InvokeMetaMethod, idx=5, argv=0xbf995c78) at kernel/qmetaobject.cpp:237
#29 0x020374ff in QMetaObject::activate (sender=0xb7d5508, m=0x3fdfc24, local_signal_index=0, argv=0xbf995c78) at kernel/qobject.cpp:3287
#30 0x03f68ce3 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#31 0x03f66b34 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#32 0x03f34c60 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#33 0x072b931a in PyCFunction_Call (func=0xb5ad5ec, arg=0xb5a1bac, kw=0x0) at ../Objects/methodobject.c:81
#34 0x07320500 in call_function (f=0xb76f80c, throwflag=0) at ../Python/ceval.c:4013
#35 PyEval_EvalFrameEx (f=0xb76f80c, throwflag=0) at ../Python/ceval.c:2666
#36 0x07320cc3 in fast_function (f=0xb731244, throwflag=0) at ../Python/ceval.c:4099
#37 call_function (f=0xb731244, throwflag=0) at ../Python/ceval.c:4034
#38 PyEval_EvalFrameEx (f=0xb731244, throwflag=0) at ../Python/ceval.c:2666
#39 0x073224c8 in PyEval_EvalCodeEx (co=0xb030578, globals=0xb0bca44, locals=0x0, args=0xa75e2d8, argcount=1, kws=0x0, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3253
#40 0x072a0c17 in function_call (func=0xb5954c4, arg=0xa75e2cc, kw=0x0) at ../Objects/funcobject.c:526
#41 0x0727408c in PyObject_Call (func=0xb5954c4, arg=0xa75e2cc, kw=0x0) at ../Objects/abstract.c:2529
#42 0x07286c0c in instancemethod_call (func=0xb5954c4, arg=0xa75e2cc, kw=0x0) at ../Objects/classobject.c:2578
#43 0x0727408c in PyObject_Call (func=0xb3d3f2c, arg=0xa46402c, kw=0x0) at ../Objects/abstract.c:2529
#44 0x0731b508 in PyEval_CallObjectWithKeywords (func=0xb3d3f2c, arg=0xa46402c, kw=0x0) at ../Python/ceval.c:3882
#45 0x087152ef in sip_api_invoke_slot () from /usr/lib/pymodules/python2.7/sip.so
#46 0x03f60b83 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#47 0x03f60c6e in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#48 0x03f60d35 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#49 0x020276ba in QMetaObject::metacall (object=0xb6d2608, cl=QMetaObject::InvokeMetaMethod, idx=5, argv=0xbf99650c) at kernel/qmetaobject.cpp:237
#50 0x020374ff in QMetaObject::activate (sender=0xaed47d0, m=0x215c5a4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3287
#51 0x020842f7 in QTimer::timeout (this=0xaed47d0) at .moc/release-shared/moc_qtimer.cpp:134
#52 0x0203d3ee in QTimer::timerEvent (this=0xaed47d0, e=0xbf996aac) at kernel/qtimer.cpp:271
#53 0x03eaf4ba in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#54 0x02036214 in QObject::event (this=0xaed47d0, e=0xbf996aac) at kernel/qobject.cpp:1190
#55 0x03eaf450 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#56 0x06648d24 in QApplicationPrivate::notify_helper (this=0x9ff8560, receiver=0xaed47d0, e=0xbf996aac) at kernel/qapplication.cpp:4462
#57 0x0664d8ce in QApplication::notify (this=0x9fe8840, receiver=0xaed47d0, e=0xbf996aac) at kernel/qapplication.cpp:3862
#58 0x0101f32a in KApplication::notify (this=0x9fe8840, receiver=0xaed47d0, event=0xbf996aac) at ../../kdeui/kernel/kapplication.cpp:311
#59 0x020210bb in QCoreApplication::notifyInternal (this=0x9fe8840, receiver=0xaed47d0, event=0xbf996aac) at kernel/qcoreapplication.cpp:731
#60 0x020511e4 in sendEvent (this=0x9ffd454) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#61 QTimerInfoList::activateTimers (this=0x9ffd454) at kernel/qeventdispatcher_unix.cpp:604
#62 0x0204de27 in timerSourceDispatch (source=0x9ffd0c0) at kernel/qeventdispatcher_glib.cpp:184
#63 idleTimerSourceDispatch (source=0x9ffd0c0) at kernel/qeventdispatcher_glib.cpp:231
#64 0x01bf0aa8 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#65 0x01bf1270 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#66 0x01bf1524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#67 0x0204e53c in QEventDispatcherGlib::processEvents (this=0x9f8daa8, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#68 0x066ff1e5 in QGuiEventDispatcherGlib::processEvents (this=0x9f8daa8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#69 0x02020289 in QEventLoop::processEvents (this=0xbf996d44, flags=...) at kernel/qeventloop.cpp:149
#70 0x02020522 in QEventLoop::exec (this=0xbf996d44, flags=...) at kernel/qeventloop.cpp:201
#71 0x02024ecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#72 0x066468e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#73 0x00c7f7cb in kdemain (argc=1, argv=0xbf996f64) at ../../../../plasma/desktop/shell/main.cpp:120
#74 0x080485cb in main (argc=1, argv=0xbf996f64) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 279666, bug 274428, bug 272656, bug 254412, bug 253637.

Reported using DrKonqi