Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2) (Compiled from sources)
Qt Version: 4.7.2
Operating System: Linux 3.0.4-gentoo-r1 x86_64
Distribution: "Gentoo Base System release 2.0.3"

-- Information about the crash:
- What I was doing when the application crashed:
Resumed the laptop from suspend to ram

- Unusual behavior I noticed:
After unlocking the screen, plasma didn't react at all (I wanted to open the networkmanager applet). The clock calendar popup was still opened.
Then, after ~15 seconds, the laptop switched to suspend to ram again.
After resuming again, the screen wasn't locked. For a moment, plasma showed up and it looked like it processed a lot of notifications, faded out the clock calendar popup etc., then it crashed.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fdd77e1b780 (LWP 7511))]

Thread 3 (Thread 0x7fdd4ecb0700 (LWP 7557)):
#0  0x00007fdd77537be7 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fdd6bdcc053 in g_main_context_poll (context=0x30d5e10, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:3405
#2  g_main_context_iterate (context=0x30d5e10, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:3087
#3  0x00007fdd6bdcc35e in g_main_context_iteration (context=0x30d5e10, may_block=1) at gmain.c:3155
#4  0x00007fdd74710f2a in QEventDispatcherGlib::processEvents (this=0x30d58a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fdd746e7e92 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#6  0x00007fdd746e81f1 in QEventLoop::exec (this=0x7fdd4ecafdc0, flags=) at kernel/qeventloop.cpp:201
#7  0x00007fdd74608412 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#8  0x00007fdd746ca3da in QInotifyFileSystemWatcherEngine::run (this=0x30d44c0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007fdd7460aefd in QThreadPrivate::start (arg=0x30d44c0) at thread/qthread_unix.cpp:320
#10 0x00007fdd7437ca6d in start_thread (arg=<value optimized out>) at pthread_create.c:301
#11 0x00007fdd7753fd7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7fdd47fff700 (LWP 7560)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fdd71b971d8 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7fdd71e9a160) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fdd71b97207 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7fdd71ea8234) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fdd7437ca6d in start_thread (arg=<value optimized out>) at pthread_create.c:301
#4  0x00007fdd7753fd7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7fdd77e1b780 (LWP 7511)):
[KCrash Handler]
#6  ref (this=0x34811f0) at /usr/include/qt4/QtCore/qatomic_x86_64.h:121
#7  QString (this=0x34811f0) at /usr/include/qt4/QtCore/qstring.h:729
#8  Notification::applicationName (this=0x34811f0) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2/plasma/generic/applets/notifications/core/notification.cpp:83
#9  0x00007fdd46d852b1 in NotificationStack::addNotification (this=0x4867630, notification=0x4921890) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2/plasma/generic/applets/notifications/ui/notificationstack.cpp:80
#10 0x00007fdd46d7a82f in Notifications::addNotification (this=0x89fa80, notification=0x4921890) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2/plasma/generic/applets/notifications/ui/notifications.cpp:267
#11 0x00007fdd46d7b0c6 in Notifications::qt_metacall (this=0x89fa80, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff557a7550) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2_build/plasma/generic/applets/notifications/notifications.moc:83
#12 0x00007fdd746feae1 in QMetaObject::activate (sender=0x8960f0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x339d901) at kernel/qobject.cpp:3278
#13 0x00007fdd46d6e49b in Manager::notificationAdded (this=<value optimized out>, _t1=0x4921890) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2_build/plasma/generic/applets/notifications/notificationsmanager.moc:124
#14 0x00007fdd46d6e90c in Manager::addNotification (this=0x8960f0, notification=0x4921890) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2/plasma/generic/applets/notifications/core/notificationsmanager.cpp:113
#15 0x00007fdd46d6edfb in Manager::qt_metacall (this=0x8960f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff557a76c0) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2_build/plasma/generic/applets/notifications/notificationsmanager.moc:107
#16 0x00007fdd746feae1 in QMetaObject::activate (sender=0x36cdd70, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x339d901) at kernel/qobject.cpp:3278
#17 0x00007fdd46d6f486 in Protocol::notificationCreated (this=<value optimized out>, _t1=0x4921890) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2_build/plasma/generic/applets/notifications/protocol.moc:104
#18 0x00007fdd46d73394 in DBusNotificationProtocol::dataUpdated (this=0x36cdd70, source=<value optimized out>, data=<value optimized out>) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2/plasma/generic/applets/notifications/protocols/notifications/dbusnotificationprotocol.cpp:125
#19 0x00007fdd46d73b25 in DBusNotificationProtocol::qt_metacall (this=0x36cdd70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff557a7ad0) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2_build/plasma/generic/applets/notifications/dbusnotificationprotocol.moc:86
#20 0x00007fdd746f0fb0 in QMetaMethod::invoke (this=0x7fff557a7f90, object=0x36cdd70, connectionType=<value optimized out>, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1578
#21 0x00007fdd746f24e2 in QMetaObject::invokeMethod (obj=0x36cdd70, member=<value optimized out>, type=<value optimized out>, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1151
#22 0x00007fdd7708bff9 in invokeMethod (this=<value optimized out>, s=0xdcc980, visualization=0x36cdd70, pollingInterval=<value optimized out>, align=Plasma::NoAlignment, immediateCall=true) at /usr/include/qt4/QtCore/qobjectdefs.h:424
#23 Plasma::DataEnginePrivate::connectSource (this=<value optimized out>, s=0xdcc980, visualization=0x36cdd70, pollingInterval=<value optimized out>, align=Plasma::NoAlignment, immediateCall=true) at /var/tmp/portage/kde-base/kdelibs-4.7.2/work/kdelibs-4.7.2/plasma/dataengine.cpp:673
#24 0x00007fdd7708d365 in Plasma::DataEngine::connectSource (this=0x36af890, source=<value optimized out>, visualization=0x36cdd70, pollingInterval=0, intervalAlignment=Plasma::NoAlignment) at /var/tmp/portage/kde-base/kdelibs-4.7.2/work/kdelibs-4.7.2/plasma/dataengine.cpp:106
#25 0x00007fdd46d73b3e in DBusNotificationProtocol::qt_metacall (this=0x36cdd70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff557a8310) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2_build/plasma/generic/applets/notifications/dbusnotificationprotocol.moc:85
#26 0x00007fdd746feae1 in QMetaObject::activate (sender=0x36af890, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x339d901) at kernel/qobject.cpp:3278
#27 0x00007fdd7708c1a6 in Plasma::DataEngine::sourceAdded (this=<value optimized out>, _t1=<value optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.7.2/work/kdelibs-4.7.2_build/plasma/dataengine.moc:191
#28 0x00007fdd7708d56c in Plasma::DataEngine::setData (this=0x36af890, source=..., data=...) at /var/tmp/portage/kde-base/kdelibs-4.7.2/work/kdelibs-4.7.2/plasma/dataengine.cpp:223
#29 0x00007fdd46941606 in NotificationsEngine::Notify (this=0x36af890, app_name=<value optimized out>, replaces_id=<value optimized out>, app_icon=..., summary=..., body=<value optimized out>, actions=..., hints=..., timeout=3720) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2/plasma/generic/dataengines/notifications/notificationsengine.cpp:202
#30 0x00007fdd46944510 in NotificationsAdaptor::qt_metacall (this=0x36cf390, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x7fff557a8840) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2_build/plasma/generic/dataengines/notifications/notificationsadaptor.moc:125
#31 0x00007fdd74a3a43b in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>) at qdbusintegrator.cpp:941
#32 0x00007fdd74a3bf65 in QDBusConnectionPrivate::activateCall (this=<value optimized out>, object=0x36cf390, flags=273, msg=...) at qdbusintegrator.cpp:851
#33 0x00007fdd74a3c906 in QDBusConnectionPrivate::activateObject (this=<value optimized out>, node=<value optimized out>, msg=..., pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1409
#34 0x00007fdd74a3cb8e in QDBusActivateObjectEvent::placeMetaCall (this=0x4cc4930) at qdbusintegrator.cpp:1523
#35 0x00007fdd746f91da in QObject::event (this=0x36af890, e=0x7fff557a73b0) at kernel/qobject.cpp:1217
#36 0x00007fdd738f4b85 in QApplicationPrivate::notify_helper (this=0x6b0e30, receiver=0x36af890, e=0x4cc4930) at kernel/qapplication.cpp:4462
#37 0x00007fdd738f97a2 in QApplication::notify (this=0x6950a0, receiver=0x36af890, e=0x4cc4930) at kernel/qapplication.cpp:4341
#38 0x00007fdd753a6a50 in KApplication::notify (this=0x6950a0, receiver=0x36af890, event=0x4cc4930) at /var/tmp/portage/kde-base/kdelibs-4.7.2/work/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#39 0x00007fdd746e8e5e in QCoreApplication::notifyInternal (this=0x6950a0, receiver=0x36af890, event=0x4cc4930) at kernel/qcoreapplication.cpp:731
#40 0x00007fdd746eba24 in sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x60c530) at kernel/qcoreapplication.h:215
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x60c530) at kernel/qcoreapplication.cpp:1372
#42 0x00007fdd747112ee in sendPostedEvents (s=0x6beb20) at kernel/qcoreapplication.h:220
#43 postEventSourceDispatch (s=0x6beb20) at kernel/qeventdispatcher_glib.cpp:277
#44 0x00007fdd6bdc84cc in g_main_dispatch (context=0x6bdce0) at gmain.c:2441
#45 g_main_context_dispatch (context=0x6bdce0) at gmain.c:3014
#46 0x00007fdd6bdcc1a1 in g_main_context_iterate (context=0x6bdce0, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:3092
#47 0x00007fdd6bdcc35e in g_main_context_iteration (context=0x6bdce0, may_block=1) at gmain.c:3155
#48 0x00007fdd74710ef2 in QEventDispatcherGlib::processEvents (this=0x60c130, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#49 0x00007fdd739978d2 in QGuiEventDispatcherGlib::processEvents (this=0x7fff557a73b0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#50 0x00007fdd746e7e92 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#51 0x00007fdd746e81f1 in QEventLoop::exec (this=0x7fff557a96b0, flags=) at kernel/qeventloop.cpp:201
#52 0x00007fdd746ebc67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#53 0x00007fdd77a2141d in kdemain (argc=1, argv=0x7fff557a9ae8) at /var/tmp/portage/kde-base/plasma-workspace-4.7.2/work/plasma-workspace-4.7.2/plasma/desktop/shell/main.cpp:120
#54 0x00007fdd77494cbc in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff557a9ad8) at libc-start.c:226
#55 0x0000000000400719 in _start ()

Reported using DrKonqi