Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.3 (4.8.3)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-25-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
- What I was doing when the application crashed: I had Google Chrome browser and Firefox open while typing a document in LibreOffice 3.5. While typing the entire desktop froze and would not recover unless I did an entire power down (holding the power key until shutting off laptop). Recovery of file would miss last paragraph of typing each time.

The crash can be reproduced some of the time.

-- 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 0x7fc940276780 (LWP 2058))]

Thread 7 (Thread 0x7fc9205d7700 (LWP 2059)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc939add222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fc939add259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fc93460ae9a in start_thread (arg=0x7fc9205d7700) at pthread_create.c:308
#4  0x00007fc93fb584bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fc918544700 (LWP 2060)):
#0  0x00007fc933d411ea in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc933d41969 in g_private_get () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc933d27ec0 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc933d06155 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc93cd29426 in QEventDispatcherGlib::processEvents (this=0x7fc9100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fc93ccf8c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fc93ccf8ed7 in QEventLoop::exec (this=0x7fc918543dd0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007fc93cbf7fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x00007fc93ccd89ff in QInotifyFileSystemWatcherEngine::run (this=0x18d9b20) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007fc93cbfafcb in QThreadPrivate::start (arg=0x18d9b20) at thread/qthread_unix.cpp:298
#10 0x00007fc93460ae9a in start_thread (arg=0x7fc918544700) at pthread_create.c:308
#11 0x00007fc93fb584bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fc917097700 (LWP 2061)):
#0  0x00007fc93460e05d in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7fc908000a60) at pthread_mutex_unlock.c:290
#2  0x00007fc933d415d1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc933d0583b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc933d05f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc933d06164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fc93cd29426 in QEventDispatcherGlib::processEvents (this=0x7fc9080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007fc93ccf8c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fc93ccf8ed7 in QEventLoop::exec (this=0x7fc917096dd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fc93cbf7fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007fc93ccd89ff in QInotifyFileSystemWatcherEngine::run (this=0x1a1b9f0) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00007fc93cbfafcb in QThreadPrivate::start (arg=0x1a1b9f0) at thread/qthread_unix.cpp:298
#12 0x00007fc93460ae9a in start_thread (arg=0x7fc917097700) at pthread_create.c:308
#13 0x00007fc93fb584bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fc90555f700 (LWP 2068)):
#0  0x00007fc93460e05d in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7fc90000c5f0) at pthread_mutex_unlock.c:290
#2  0x00007fc933d415d1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc933d05efc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc933d0649a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc906049406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007fc933d279e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fc93460ae9a in start_thread (arg=0x7fc90555f700) at pthread_create.c:308
#8  0x00007fc93fb584bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fc8fffff700 (LWP 2069)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc93b1c4dec in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fc93b1c4f19 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fc93460ae9a in start_thread (arg=0x7fc8fffff700) at pthread_create.c:308
#4  0x00007fc93fb584bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fc8ff7fe700 (LWP 2070)):
#0  0x00007fc93fb4cb03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fc933d06036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc933d06164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc93cd29426 in QEventDispatcherGlib::processEvents (this=0x7fc8f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fc93ccf8c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fc93ccf8ed7 in QEventLoop::exec (this=0x7fc8ff7fde00, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fc93cbf7fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fc93cbfafcb in QThreadPrivate::start (arg=0x27c3860) at thread/qthread_unix.cpp:298
#8  0x00007fc93460ae9a in start_thread (arg=0x7fc8ff7fe700) at pthread_create.c:308
#9  0x00007fc93fb584bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc940276780 (LWP 2058)):
[KCrash Handler]
#6  QMutex::lock (this=0x730075007400a9) at thread/qmutex.cpp:150
#7  0x00007fc93ccfd4c9 in QCoreApplication::postEvent (receiver=0x3c908e0, event=0x3b11140, priority=0) at kernel/qcoreapplication.cpp:1281
#8  0x00007fc923a73dac in StatusNotifierItemJob::contextMenuReady (this=0x3c908e0, menu=0x39afc40) at ../../../../../plasma/generic/dataengines/statusnotifieritem/statusnotifieritemjob.cpp:53
#9  0x00007fc93cd0e281 in QMetaObject::activate (sender=0x39945e0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff86f641c0) at kernel/qobject.cpp:3547
#10 0x00007fc923a6fdbf in StatusNotifierItemSource::contextMenuReady (this=<optimized out>, _t1=0x39afc40) at ./statusnotifieritemsource.moc:123
#11 0x00007fc923a72d15 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at ./statusnotifieritemsource.moc:65
#12 StatusNotifierItemSource::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./statusnotifieritemsource.moc:58
#13 0x00007fc93cd0e281 in QMetaObject::activate (sender=0x1f991d0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#14 0x00007fc934e8179c in DBusMenuImporter::slotMenuAboutToShow() () from /usr/lib/x86_64-linux-gnu/libdbusmenu-qt.so.2
#15 0x00007fc93cd0e281 in QMetaObject::activate (sender=0x39afc40, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#16 0x00007fc93cd01f01 in QMetaMethod::invoke (this=0x7fff86f649c0, object=0x39afc40, connectionType=Qt::DirectConnection, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1664
#17 0x00007fc93cd04210 in QMetaObject::invokeMethod (obj=0x39afc40, member=<optimized out>, type=Qt::AutoConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1179
#18 0x00007fc934e805a1 in DBusMenuImporter::updateMenu() () from /usr/lib/x86_64-linux-gnu/libdbusmenu-qt.so.2
#19 0x00007fc923a6f9bb in StatusNotifierItemSource::contextMenu (this=0x39945e0, x=830, y=743) at ../../../../../plasma/generic/dataengines/statusnotifieritem/statusnotifieritemsource.cpp:466
#20 0x00007fc923a74f0f in StatusNotifierItemJob::start (this=0x3c908e0) at ../../../../../plasma/generic/dataengines/statusnotifieritem/statusnotifieritemjob.cpp:43
#21 0x00007fc93cd13446 in QObject::event (this=0x3c908e0, e=<optimized out>) at kernel/qobject.cpp:1195
#22 0x00007fc93c07c894 in notify_helper (e=0x3db83f0, receiver=0x3c908e0, this=0x86f120) at kernel/qapplication.cpp:4559
#23 QApplicationPrivate::notify_helper (this=0x86f120, receiver=0x3c908e0, e=0x3db83f0) at kernel/qapplication.cpp:4531
#24 0x00007fc93c081713 in QApplication::notify (this=0x8476e0, receiver=0x3c908e0, e=0x3db83f0) at kernel/qapplication.cpp:4420
#25 0x00007fc93d9d7bb6 in KApplication::notify (this=0x8476e0, receiver=0x3c908e0, event=0x3db83f0) at ../../kdeui/kernel/kapplication.cpp:311
#26 0x00007fc93ccf9e9c in QCoreApplication::notifyInternal (this=0x8476e0, receiver=0x3c908e0, event=0x3db83f0) at kernel/qcoreapplication.cpp:876
#27 0x00007fc93ccfdc6a in sendEvent (event=0x3db83f0, receiver=0x3c908e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x7e91f0) at kernel/qcoreapplication.cpp:1500
#29 0x00007fc93cd28f93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#30 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#31 0x00007fc933d05d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fc933d060a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fc933d06164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fc93cd293bf in QEventDispatcherGlib::processEvents (this=0x7eaad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#35 0x00007fc93c124d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#36 0x00007fc93ccf8c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#37 0x00007fc93ccf8ed7 in QEventLoop::exec (this=0x7fff86f65ab0, flags=...) at kernel/qeventloop.cpp:204
#38 0x00007fc93ccfdf67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#39 0x00007fc93fe64a13 in kdemain (argc=1, argv=0x7fff86f65e98) at ../../../../plasma/desktop/shell/main.cpp:120
#40 0x00007fc93fa8776d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff86f65e98, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff86f65e88) at libc-start.c:226
#41 0x0000000000400671 in _start ()

Possible duplicates by query: bug 301539, bug 300603, bug 294349, bug 289813, bug 288377.

Reported using DrKonqi