Application: plasma-desktop (4.10.5)
KDE Platform Version: 4.10.5
Qt Version: 4.8.4
Operating System: Linux 3.8.0-30-generic x86_64
Distribution: Ubuntu 13.04

-- Information about the crash:
I was trying to log out, but all I got was this crash report. I am not sure about the duplicates because the backtrace looks quite different in some places...

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcaa0c2a7c0 (LWP 2867))]

Thread 5 (Thread 0x7fca7f283700 (LWP 2869)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fca99963b27 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7fca99c71660 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fca99963b59 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fca910f51b4 in ?? () from /usr/lib/nvidia-313-updates/libGL.so.1
#4  0x00007fca9405cf8e in start_thread (arg=0x7fca7f283700) at pthread_create.c:311
#5  0x00007fcaa051fe1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7fc9f6976700 (LWP 2873)):
#0  0x00007fcaa05133cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fca9395a1dc in g_main_context_poll (n_fds=1, fds=0x7fc9f00029c0, timeout=-1, context=0x7fc9f00009c0, priority=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3995
#2  g_main_context_iterate (context=context@entry=0x7fc9f00009c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3696
#3  0x00007fca9395a304 in g_main_context_iteration (context=0x7fc9f00009c0, may_block=1) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3762
#4  0x00007fca9d100036 in QEventDispatcherGlib::processEvents (this=0x7fc9f00008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fca9d0d038f in QEventLoop::processEvents (this=this@entry=0x7fc9f6975cd0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fca9d0d0618 in QEventLoop::exec (this=this@entry=0x7fc9f6975cd0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007fca9cfd2410 in QThread::exec (this=this@entry=0x2e126c0) at thread/qthread.cpp:542
#8  0x00007fca9d0b1edf in QInotifyFileSystemWatcherEngine::run (this=0x2e126c0) at io/qfilesystemwatcher_inotify.cpp:256
#9  0x00007fca9cfd4bec in QThreadPrivate::start (arg=0x2e126c0) at thread/qthread_unix.cpp:338
#10 0x00007fca910f51b4 in ?? () from /usr/lib/nvidia-313-updates/libGL.so.1
#11 0x00007fca9405cf8e in start_thread (arg=0x7fc9f6976700) at pthread_create.c:311
#12 0x00007fcaa051fe1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7fc9e845d700 (LWP 2874)):
#0  g_main_context_dispatch (context=context@entry=0x7fc9e00009c0) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3628
#1  0x00007fca9395a248 in g_main_context_iterate (context=context@entry=0x7fc9e00009c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3701
#2  0x00007fca9395a304 in g_main_context_iteration (context=0x7fc9e00009c0, may_block=1) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3762
#3  0x00007fca9d100036 in QEventDispatcherGlib::processEvents (this=0x7fc9e00008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fca9d0d038f in QEventLoop::processEvents (this=this@entry=0x7fc9e845ccd0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fca9d0d0618 in QEventLoop::exec (this=this@entry=0x7fc9e845ccd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fca9cfd2410 in QThread::exec (this=this@entry=0x336f620) at thread/qthread.cpp:542
#7  0x00007fca9d0b1edf in QInotifyFileSystemWatcherEngine::run (this=0x336f620) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007fca9cfd4bec in QThreadPrivate::start (arg=0x336f620) at thread/qthread_unix.cpp:338
#9  0x00007fca910f51b4 in ?? () from /usr/lib/nvidia-313-updates/libGL.so.1
#10 0x00007fca9405cf8e in start_thread (arg=0x7fc9e845d700) at pthread_create.c:311
#11 0x00007fcaa051fe1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7fc9de33a700 (LWP 2881)):
#0  __lll_unlock_wake () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:371
#1  0x00007fca94060119 in _L_unlock_571 () from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007fca94060085 in __pthread_mutex_unlock_usercnt (mutex=0x7fca91353e20, decr=<optimized out>) at pthread_mutex_unlock.c:52
#3  0x00007fca910ef15a in ?? () from /usr/lib/nvidia-313-updates/libGL.so.1
#4  0x00007fca910f4196 in ?? () from /usr/lib/nvidia-313-updates/libGL.so.1
#5  0x00007fca8eadcb27 in ?? () from /usr/lib/nvidia-313-updates/tls/libnvidia-tls.so.313.30
#6  0x00007fca939986cf in read (__nbytes=16, __buf=0x7fc9de339ad0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#7  g_wakeup_acknowledge (wakeup=0x7fc9d8001f80) at /build/buildd/glib2.0-2.36.0/./glib/gwakeup.c:212
#8  0x00007fca93959d3c in g_main_context_check (context=context@entry=0x7fc9d40009c0, max_priority=2147483647, fds=fds@entry=0x7fc9d40013e0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3502
#9  0x00007fca9395a175 in g_main_context_iterate (context=context@entry=0x7fc9d40009c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3698
#10 0x00007fca9395a304 in g_main_context_iteration (context=0x7fc9d40009c0, may_block=1) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3762
#11 0x00007fca9d100036 in QEventDispatcherGlib::processEvents (this=0x7fc9d40008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0x00007fca9d0d038f in QEventLoop::processEvents (this=this@entry=0x7fc9de339cc0, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007fca9d0d0618 in QEventLoop::exec (this=this@entry=0x7fc9de339cc0, flags=...) at kernel/qeventloop.cpp:204
#14 0x00007fca9cfd2410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#15 0x00007fc9e44496e5 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#16 0x00007fca9cfd4bec in QThreadPrivate::start (arg=0x421fe70) at thread/qthread_unix.cpp:338
#17 0x00007fca910f51b4 in ?? () from /usr/lib/nvidia-313-updates/libGL.so.1
#18 0x00007fca9405cf8e in start_thread (arg=0x7fc9de33a700) at pthread_create.c:311
#19 0x00007fcaa051fe1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7fcaa0c2a7c0 (LWP 2867)):
[KCrash Handler]
#6  0x00007fca9ecca944 in QDeclarativeItem::~QDeclarativeItem (this=0x527bf80, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007fca9ec8f10e in ~QDeclarativeElement (this=0x527bf80, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x527bf80, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#9  0x00007fca9d0eb5e8 in QObject::event (this=0x527bf80, e=<optimized out>) at kernel/qobject.cpp:1175
#10 0x00007fca9c4778ec in QApplicationPrivate::notify_helper (this=this@entry=0x21fcdd0, receiver=receiver@entry=0x527bf80, e=e@entry=0x3d30030) at kernel/qapplication.cpp:4567
#11 0x00007fca9c47a25b in QApplication::notify (this=this@entry=0x2226050, receiver=receiver@entry=0x527bf80, e=e@entry=0x3d30030) at kernel/qapplication.cpp:4428
#12 0x00007fca9dd951a6 in KApplication::notify (this=0x2226050, receiver=0x527bf80, event=0x3d30030) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007fca9d0d163e in QCoreApplication::notifyInternal (this=0x2226050, receiver=receiver@entry=0x527bf80, event=event@entry=0x3d30030) at kernel/qcoreapplication.cpp:946
#14 0x00007fca9d0d5171 in sendEvent (event=0x3d30030, receiver=0x527bf80) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=52, data=0x214c1f0) at kernel/qcoreapplication.cpp:1570
#16 0x00007fca9d0d54a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=52) at kernel/qcoreapplication.cpp:1463
#17 0x00007fca9d0d5d2d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#18 0x00007fcaa082b46b in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#19 0x00007fcaa0447ea5 in __libc_start_main (main=0x4006e0, argc=1, ubp_av=0x7fffb9c05f28, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb9c05f18) at libc-start.c:260
#20 0x0000000000400711 in _start ()

This bug may be a duplicate of or related to bug 302931.

Possible duplicates by query: bug 324431, bug 324286, bug 323776, bug 321878, bug 321861.

Reported using DrKonqi