Bug 275943

Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
I had chosen two new wallpapers to install and gotten messages that the server was busy and try again later.  Then I went to category pulldown menu and selected "Kubuntu Wallpapers" and the Plasma Desktop crashed.  Screen become totally black except for the cursor, then slowly panels and widgets appeared again.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb60f1720 (LWP 1784))]

Thread 5 (Thread 0xade04b70 (LWP 1788)):
#0  0x018a67c4 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x005d4656 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x05412712 in g_main_context_check (context=0x8a36120, max_priority=2147483647, fds=0x8a37950, n_fds=1) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:2959
#3  0x0541303a in g_main_context_iterate (context=0x8a36120, block=88225824, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3088
#4  0x05413524 in g_main_context_iteration (context=0x8a36120, may_block=1) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3154
#5  0x01a48577 in QEventDispatcherGlib::processEvents (this=0x8a360a0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x01a1a289 in QEventLoop::processEvents (this=0xade04280, flags=...) at kernel/qeventloop.cpp:149
#7  0x01a1a522 in QEventLoop::exec (this=0xade04280, flags=...) at kernel/qeventloop.cpp:201
#8  0x019242a0 in QThread::exec (this=0x898ba10) at thread/qthread.cpp:492
#9  0x019fbfdb in QInotifyFileSystemWatcherEngine::run (this=0x898ba10) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x01926da2 in QThreadPrivate::start (arg=0x898ba10) at thread/qthread_unix.cpp:320
#11 0x018a2e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x005c673e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xad603b70 (LWP 1789)):
#0  0x005d481f in ?? () from /lib/i386-linux-gnu/libc.so.6
#1  0x005b7f88 in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0x0542384b in g_poll (fds=0x83af7d0, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.28.6/./glib/gpoll.c:132
#3  0x054131af in g_main_context_poll (context=0x8a39ce0, block=88225824, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3404
#4  g_main_context_iterate (context=0x8a39ce0, block=88225824, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3086
#5  0x05413524 in g_main_context_iteration (context=0x8a39ce0, may_block=1) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3154
#6  0x01a48577 in QEventDispatcherGlib::processEvents (this=0x8a3c878, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#7  0x01a1a289 in QEventLoop::processEvents (this=0xad603280, flags=...) at kernel/qeventloop.cpp:149
#8  0x01a1a522 in QEventLoop::exec (this=0xad603280, flags=...) at kernel/qeventloop.cpp:201
#9  0x019242a0 in QThread::exec (this=0x839dc60) at thread/qthread.cpp:492
#10 0x019fbfdb in QInotifyFileSystemWatcherEngine::run (this=0x839dc60) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x01926da2 in QThreadPrivate::start (arg=0x839dc60) at thread/qthread_unix.cpp:320
#12 0x018a2e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#13 0x005c673e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xac5f9b70 (LWP 1791)):
#0  0x00914416 in __kernel_vsyscall ()
#1  0x018a748c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x005d43fd in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x0144d817 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x15611c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x0144d851 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x15611c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x018a2e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x005c673e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xa9c22b70 (LWP 2576)):
#0  0x00914416 in __kernel_vsyscall ()
#1  0x018a748c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x005d43fd in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x028fcb57 in ?? () from /usr/lib/libQtWebKit.so.4
#4  0x018a2e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#5  0x005c673e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb60f1720 (LWP 1784)):
[KCrash Handler]
#7  0x064bd219 in Attica::BaseJob::abort() () from /usr/lib/libattica.so.0
#8  0x004aa666 in KNS3::AtticaProvider::loadEntries (this=0x94717a8, request=...) at ../../../knewstuff/knewstuff3/attica/atticaprovider.cpp:138
#9  0x00482219 in KNS3::Engine::reloadEntries (this=0x9438be8) at ../../../knewstuff/knewstuff3/core/engine.cpp:310
#10 0x0047146d in KNS3::DownloadWidgetPrivate::slotCategoryChanged (this=0xab10830, idx=1) at ../../../knewstuff/knewstuff3/downloadwidget.cpp:163
#11 0x00472b02 in KNS3::DownloadWidget::qt_metacall (this=0x9b0fac8, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbff9f4c8) at ./downloadwidget.moc:116
#12 0x01a216ba in QMetaObject::metacall (object=0x9b0fac8, cl=QMetaObject::InvokeMetaMethod, idx=41, argv=0xbff9f4c8) at kernel/qmetaobject.cpp:237
#13 0x01a314ff in QMetaObject::activate (sender=0x9c5ee30, m=0x741c564, local_signal_index=1, argv=0xbff9f4c8) at kernel/qobject.cpp:3287
#14 0x06f04be3 in QComboBox::activated (this=0x9c5ee30, _t1=1) at .moc/release-shared/moc_qcombobox.cpp:274
#15 0x06f04ca1 in QComboBoxPrivate::emitActivated (this=0xab87f80, index=...) at widgets/qcombobox.cpp:1247
#16 0x06f05f40 in QComboBoxPrivate::_q_itemSelected (this=0xab87f80, item=...) at widgets/qcombobox.cpp:1238
#17 0x06f0970a in QComboBox::qt_metacall (this=0x9c5ee30, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0xbff9f6c8) at .moc/release-shared/moc_qcombobox.cpp:191
#18 0x011b255a in KComboBox::qt_metacall (this=0x9c5ee30, _c=QMetaObject::InvokeMetaMethod, _id=39, _a=0xbff9f6c8) at ./kcombobox.moc:106
#19 0x01a216ba in QMetaObject::metacall (object=0x9c5ee30, cl=QMetaObject::InvokeMetaMethod, idx=39, argv=0xbff9f6c8) at kernel/qmetaobject.cpp:237
#20 0x01a314ff in QMetaObject::activate (sender=0xa864928, m=0x742ac94, local_signal_index=0, argv=0xbff9f6c8) at kernel/qobject.cpp:3287
#21 0x071d11a3 in QComboBoxPrivateContainer::itemSelected (this=0xa864928, _t1=...) at .moc/release-shared/moc_qcombobox_p.cpp:213
#22 0x06eff6df in QComboBoxPrivateContainer::eventFilter (this=0xa864928, o=0x9ebb420, e=0xbff9fcd4) at widgets/qcombobox.cpp:687
#23 0x01a1b25a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8316238, receiver=0x9ebb420, event=0xbff9fcd4) at kernel/qcoreapplication.cpp:846
#24 0x06ae6d00 in QApplicationPrivate::notify_helper (this=0x8316238, receiver=0x9ebb420, e=0xbff9fcd4) at kernel/qapplication.cpp:4458
#25 0x06aec201 in QApplication::notify (this=0x8304068, receiver=0x9ebb420, e=0xbff9fcd4) at kernel/qapplication.cpp:4023
#26 0x010fd3ca in KApplication::notify (this=0x8304068, receiver=0x9ebb420, event=0xbff9fcd4) at ../../kdeui/kernel/kapplication.cpp:311
#27 0x01a1b0bb in QCoreApplication::notifyInternal (this=0x8304068, receiver=0x9ebb420, event=0xbff9fcd4) at kernel/qcoreapplication.cpp:731
#28 0x06ae7c3b in sendSpontaneousEvent (receiver=0x9ebb420, event=0xbff9fcd4, alienWidget=0x9ebb420, nativeWidget=0xa864928, buttonDown=0x7433c60, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#29 QApplicationPrivate::sendMouseEvent (receiver=0x9ebb420, event=0xbff9fcd4, alienWidget=0x9ebb420, nativeWidget=0xa864928, buttonDown=0x7433c60, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3120
#30 0x06b714c3 in QETWidget::translateMouseEvent (this=0xa864928, event=0xbffa01fc) at kernel/qapplication_x11.cpp:4490
#31 0x06b6f746 in QApplication::x11ProcessEvent (this=0x8304068, event=0xbffa01fc) at kernel/qapplication_x11.cpp:3678
#32 0x06b9ab84 in x11EventSourceDispatch (s=0x830f180, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0x05412aa8 in g_main_dispatch (context=0x830d5c8) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:2440
#34 g_main_context_dispatch (context=0x830d5c8) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3013
#35 0x05413270 in g_main_context_iterate (context=0x830d5c8, block=88225824, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3091
#36 0x05413524 in g_main_context_iteration (context=0x830d5c8, may_block=1) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3154
#37 0x01a4853c in QEventDispatcherGlib::processEvents (this=0x8290aa8, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#38 0x06b9a775 in QGuiEventDispatcherGlib::processEvents (this=0x8290aa8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#39 0x01a1a289 in QEventLoop::processEvents (this=0xbffa04c4, flags=...) at kernel/qeventloop.cpp:149
#40 0x01a1a522 in QEventLoop::exec (this=0xbffa04c4, flags=...) at kernel/qeventloop.cpp:201
#41 0x01a1eecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#42 0x06ae48e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#43 0x0078b5a5 in kdemain (argc=1, argv=0xbffa06d4) at ../../../../plasma/desktop/shell/main.cpp:118
#44 0x080485cb in main (argc=1, argv=0xbffa06d4) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 251871.

Possible duplicates by query: bug 269416, bug 268422, bug 265956, bug 259407, bug 257108.

Reported using DrKonqi