Application: plasma-desktop (4.12.0)
KDE Platform Version: 4.11.4
Qt Version: 4.8.4
Operating System: Linux 3.13.0-2-generic x86_64
Distribution: Ubuntu Trusty Tahr (development branch)

-- Information about the crash:
- What I was doing when the application crashed:

crash happened when i turned on ktorrent and moved it to a second virtual desktop
i dont know if this is due to grouping of some programs as it is suggested in other related crash reports but i believe that the packages i have are newest so i dont think the bug is repaired...

thank you!

Simon

The crash can be reproduced sometimes.

-- Backtrace:
Application: Namizna lupina Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
To enable execution of this file add
	add-auto-load-safe-path /lib/x86_64-linux-gnu/libglib-2.0.so.0.3903.0-gdb.py
line to your configuration file "/home/fani/.gdbinit".
To completely disable this security protection add
	set auto-load safe-path /
line to your configuration file "/home/fani/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
	info "(gdb)Auto-loading safe path"
[Current thread is 1 (Thread 0x7f22dbe2d7c0 (LWP 2319))]

Thread 6 (Thread 0x7f22b4eca700 (LWP 2320)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f22d4ae939b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f22d4ae93d9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f22cf18f182 in start_thread (arg=0x7f22b4eca700) at pthread_create.c:312
#4  0x00007f22db733a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f2229bed700 (LWP 2324)):
#0  _dl_update_slotinfo (req_modid=2) at dl-tls.c:543
#1  0x00007f22dbc7b216 in update_get_addr (ti=0x7f22d8638a50) at dl-tls.c:753
#2  0x00007f22d81d3c14 in get_thread_data () at thread/qthread_unix.cpp:182
#3  QThreadData::current () at thread/qthread_unix.cpp:208
#4  0x00007f22d83015d1 in postEventSourcePrepare (s=0x7f22240012d0, timeout=0x7f2229becc24) at kernel/qeventdispatcher_glib.cpp:256
#5  0x00007f22cea8339d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f22cea83c13 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f22cea83dfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f22d83016c6 in QEventDispatcherGlib::processEvents (this=0x7f22240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#9  0x00007f22d82d327f in QEventLoop::processEvents (this=this@entry=0x7f2229becde0, flags=...) at kernel/qeventloop.cpp:149
#10 0x00007f22d82d3575 in QEventLoop::exec (this=this@entry=0x7f2229becde0, flags=...) at kernel/qeventloop.cpp:204
#11 0x00007f22d81d285f in QThread::exec (this=this@entry=0x266ce90) at thread/qthread.cpp:542
#12 0x00007f22d82b4ab3 in QInotifyFileSystemWatcherEngine::run (this=0x266ce90) at io/qfilesystemwatcher_inotify.cpp:265
#13 0x00007f22d81d4eff in QThreadPrivate::start (arg=0x266ce90) at thread/qthread_unix.cpp:338
#14 0x00007f22cf18f182 in start_thread (arg=0x7f2229bed700) at pthread_create.c:312
#15 0x00007f22db733a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f222162f700 (LWP 2328)):
#0  0x00007f22cf1915c0 in __GI___pthread_mutex_lock (mutex=0x7f2210000a60) at ../nptl/pthread_mutex_lock.c:146
#1  0x00007f22ceac4621 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f22cea833a9 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f22cea83c13 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f22cea83dfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f22d83016c6 in QEventDispatcherGlib::processEvents (this=0x7f22100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f22d82d327f in QEventLoop::processEvents (this=this@entry=0x7f222162ede0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f22d82d3575 in QEventLoop::exec (this=this@entry=0x7f222162ede0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f22d81d285f in QThread::exec (this=this@entry=0x29c91e0) at thread/qthread.cpp:542
#9  0x00007f22d82b4ab3 in QInotifyFileSystemWatcherEngine::run (this=0x29c91e0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f22d81d4eff in QThreadPrivate::start (arg=0x29c91e0) at thread/qthread_unix.cpp:338
#11 0x00007f22cf18f182 in start_thread (arg=0x7f222162f700) at pthread_create.c:312
#12 0x00007f22db733a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f2203c7f700 (LWP 2336)):
#0  0x00007f22db724d5d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f22ceac38d0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f22cea83824 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f22cea83c8b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f22cea83dfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f22d83016c6 in QEventDispatcherGlib::processEvents (this=0x7f21fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f22d82d327f in QEventLoop::processEvents (this=this@entry=0x7f2203c7ede0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f22d82d3575 in QEventLoop::exec (this=this@entry=0x7f2203c7ede0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f22d81d285f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007f22060c40c7 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#10 0x00007f22d81d4eff in QThreadPrivate::start (arg=0x4f69990) at thread/qthread_unix.cpp:338
#11 0x00007f22cf18f182 in start_thread (arg=0x7f2203c7f700) at pthread_create.c:312
#12 0x00007f22db733a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f2202a4a700 (LWP 2351)):
#0  0x00007f22db724d5d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f22ceac38d0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f22cea83824 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f22cea83c8b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f22cea83dfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f22d83016c6 in QEventDispatcherGlib::processEvents (this=0x7f21f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f22d82d327f in QEventLoop::processEvents (this=this@entry=0x7f2202a49e20, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f22d82d3575 in QEventLoop::exec (this=this@entry=0x7f2202a49e20, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f22d81d285f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007f22d81d4eff in QThreadPrivate::start (arg=0x4325e90) at thread/qthread_unix.cpp:338
#10 0x00007f22cf18f182 in start_thread (arg=0x7f2202a4a700) at pthread_create.c:312
#11 0x00007f22db733a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f22dbe2d7c0 (LWP 2319)):
[KCrash Handler]
#6  QGraphicsItem::ungrabMouse (this=0x95c5480) at graphicsview/qgraphicsitem.cpp:3522
#7  0x00007f22d7c3e2ef in QGraphicsScenePrivate::clearMouseGrabber (this=this@entry=0x269cc90) at graphicsview/qgraphicsscene.cpp:1004
#8  0x00007f22d7c413fb in QGraphicsScenePrivate::sendMouseEvent (this=0x269cc90, mouseEvent=0x7fffe27e8cc0) at graphicsview/qgraphicsscene.cpp:1279
#9  0x00007f22d7c4a136 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fffe27e8cc0) at graphicsview/qgraphicsscene.cpp:4102
#10 0x00007f22d7c5602c in QGraphicsScene::event (this=0x27c3e90, event=0x7fffe27e8cc0) at graphicsview/qgraphicsscene.cpp:3451
#11 0x00007f22d7671dac in QApplicationPrivate::notify_helper (this=this@entry=0x25eaaa0, receiver=receiver@entry=0x27c3e90, e=e@entry=0x7fffe27e8cc0) at kernel/qapplication.cpp:4567
#12 0x00007f22d7678420 in QApplication::notify (this=this@entry=0x25e3d90, receiver=receiver@entry=0x27c3e90, e=e@entry=0x7fffe27e8cc0) at kernel/qapplication.cpp:4353
#13 0x00007f22d8f988ba in KApplication::notify (this=0x25e3d90, receiver=0x27c3e90, event=0x7fffe27e8cc0) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f22d82d454d in QCoreApplication::notifyInternal (this=0x25e3d90, receiver=0x27c3e90, event=event@entry=0x7fffe27e8cc0) at kernel/qcoreapplication.cpp:946
#15 0x00007f22d76704d6 in sendSpontaneousEvent (event=event@entry=0x7fffe27e8cc0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#16 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fffe27e8cc0) at kernel/qapplication.cpp:5565
#17 0x00007f22d7c6b26c in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x58b5630, event=event@entry=0x7fffe27e9310) at graphicsview/qgraphicsview.cpp:646
#18 0x00007f22d7c6c17a in QGraphicsView::mouseMoveEvent (this=0x3b9b430, event=0x7fffe27e9310) at graphicsview/qgraphicsview.cpp:3276
#19 0x00007f22d76c13c5 in QWidget::event (this=this@entry=0x3b9b430, event=event@entry=0x7fffe27e9310) at kernel/qwidget.cpp:8360
#20 0x00007f22d7a624ee in QFrame::event (this=0x3b9b430, e=0x7fffe27e9310) at widgets/qframe.cpp:557
#21 0x00007f22d7c6d7c9 in QGraphicsView::viewportEvent (this=0x3b9b430, event=0x7fffe27e9310) at graphicsview/qgraphicsview.cpp:2866
#22 0x00007f22d82d46b6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x25eaaa0, receiver=receiver@entry=0x58b87f0, event=event@entry=0x7fffe27e9310) at kernel/qcoreapplication.cpp:1056
#23 0x00007f22d7671d8c in QApplicationPrivate::notify_helper (this=this@entry=0x25eaaa0, receiver=receiver@entry=0x58b87f0, e=e@entry=0x7fffe27e9310) at kernel/qapplication.cpp:4563
#24 0x00007f22d767855d in QApplication::notify (this=this@entry=0x25e3d90, receiver=receiver@entry=0x58b87f0, e=e@entry=0x7fffe27e9310) at kernel/qapplication.cpp:4110
#25 0x00007f22d8f988ba in KApplication::notify (this=0x25e3d90, receiver=0x58b87f0, event=0x7fffe27e9310) at ../../kdeui/kernel/kapplication.cpp:311
#26 0x00007f22d82d454d in QCoreApplication::notifyInternal (this=0x25e3d90, receiver=receiver@entry=0x58b87f0, event=event@entry=0x7fffe27e9310) at kernel/qcoreapplication.cpp:946
#27 0x00007f22d7677d13 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#28 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x58b87f0, event=event@entry=0x7fffe27e9310, alienWidget=alienWidget@entry=0x58b87f0, nativeWidget=nativeWidget@entry=0x3b9b430, buttonDown=buttonDown@entry=0x7f22d81562f8 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#29 0x00007f22d76ec6eb in QETWidget::translateMouseEvent (this=this@entry=0x3b9b430, event=event@entry=0x7fffe27e9690) at kernel/qapplication_x11.cpp:4631
#30 0x00007f22d76ebf89 in QApplication::x11ProcessEvent (this=0x25e3d90, event=event@entry=0x7fffe27e9690) at kernel/qapplication_x11.cpp:3624
#31 0x00007f22d7713812 in x11EventSourceDispatch (s=0x25eb0e0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#32 0x00007f22cea83b14 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f22cea83d58 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f22cea83dfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f22d83016a5 in QEventDispatcherGlib::processEvents (this=0x2554ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#36 0x00007f22d77138c6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#37 0x00007f22d82d327f in QEventLoop::processEvents (this=this@entry=0x7fffe27e9a60, flags=...) at kernel/qeventloop.cpp:149
#38 0x00007f22d82d3575 in QEventLoop::exec (this=this@entry=0x7fffe27e9a60, flags=...) at kernel/qeventloop.cpp:204
#39 0x00007f22d82d8ad9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#40 0x00007f22d76702fc in QApplication::exec () at kernel/qapplication.cpp:3828
#41 0x00007f22dba3c65c in kdemain (argc=1, argv=0x7fffe27e9cb8) at ../../../../plasma/desktop/shell/main.cpp:126
#42 0x00007f22db65aed5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7fffe27e9cb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe27e9ca8) at libc-start.c:287
#43 0x000000000040070e in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 325383.

Possible duplicates by query: bug 327737, bug 327686, bug 327587, bug 327576, bug 326842.

Reported using DrKonqi