Application: lancelot (1.9.5)
KDE Platform Version: 4.11.3 (Compiled from sources)
Qt Version: 4.8.5
Operating System: Linux 3.11.6-4-desktop x86_64
Distribution: "openSUSE 13.1 (Bottle) (x86_64)"

-- Information about the crash:
Lancelot stops every time you try return menu and other tips

The crash can be reproduced every time.

-- Backtrace:
Application: Lancelot (lancelot), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5f663148c0 (LWP 3640))]

Thread 2 (Thread 0x7f5f46cdc700 (LWP 3642)):
#0  0x00007f5f59c6cffd in ?? () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f5f59c6d2b9 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f5f59c2d4bd in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f5f59c2d70c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f5f62dbbd76 in QEventDispatcherGlib::processEvents (this=0x2524900, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#5  0x00007f5f62d8dd0f in QEventLoop::processEvents (this=this@entry=0x7f5f46cdbce0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f5f62d8e005 in QEventLoop::exec (this=this@entry=0x7f5f46cdbce0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f5f62c8cfef in QThread::exec (this=this@entry=0x252b9d0) at thread/qthread.cpp:536
#8  0x00007f5f62d6f513 in QInotifyFileSystemWatcherEngine::run (this=0x252b9d0) at io/qfilesystemwatcher_inotify.cpp:256
#9  0x00007f5f62c8f68f in QThreadPrivate::start (arg=0x252b9d0) at thread/qthread_unix.cpp:338
#10 0x00007f5f60ce60db in start_thread () from /lib64/libpthread.so.0
#11 0x00007f5f6263e90d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f5f663148c0 (LWP 3640)):
[KCrash Handler]
#6  0x00007f5f65337c96 in Plasma::KineticScrolling::eventFilter (this=0x2e864d0, watched=<optimized out>, event=0x2fbee10) at /usr/src/debug/kdeplasma-addons-4.11.3/libs/lancelot/widgets/kineticscroll.cpp:394
#7  0x00007f5f62d8f216 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x210fbb0, receiver=receiver@entry=0x2be85e0, event=event@entry=0x2fbee10) at kernel/qcoreapplication.cpp:1059
#8  0x00007f5f6355088c in QApplicationPrivate::notify_helper (this=this@entry=0x210fbb0, receiver=receiver@entry=0x2be85e0, e=e@entry=0x2fbee10) at kernel/qapplication.cpp:4558
#9  0x00007f5f63556e70 in QApplication::notify (this=this@entry=0x20e23e0, receiver=receiver@entry=0x2be85e0, e=e@entry=0x2fbee10) at kernel/qapplication.cpp:4348
#10 0x00007f5f6473318a in KApplication::notify (this=0x20e23e0, receiver=0x2be85e0, event=0x2fbee10) at /usr/src/debug/kdelibs-4.11.3/kdeui/kernel/kapplication.cpp:311
#11 0x00007f5f62d8f0ad in QCoreApplication::notifyInternal (this=0x20e23e0, receiver=receiver@entry=0x2be85e0, event=event@entry=0x2fbee10) at kernel/qcoreapplication.cpp:949
#12 0x00007f5f62d920ff in sendEvent (event=0x2fbee10, receiver=0x2be85e0) at kernel/qcoreapplication.h:231
#13 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x2094210) at kernel/qcoreapplication.cpp:1573
#14 0x00007f5f62d925a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1466
#15 0x00007f5f62dbc493 in sendPostedEvents () at kernel/qcoreapplication.h:236
#16 postEventSourceDispatch (s=0x2100290) at kernel/qeventdispatcher_glib.cpp:280
#17 0x00007f5f59c2d316 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#18 0x00007f5f59c2d668 in ?? () from /usr/lib64/libglib-2.0.so.0
#19 0x00007f5f59c2d70c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#20 0x00007f5f62dbbd55 in QEventDispatcherGlib::processEvents (this=0x209a110, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#21 0x00007f5f635ed936 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#22 0x00007f5f62d8dd0f in QEventLoop::processEvents (this=this@entry=0x7fff23287ba0, flags=...) at kernel/qeventloop.cpp:149
#23 0x00007f5f62d8e005 in QEventLoop::exec (this=this@entry=0x7fff23287ba0, flags=...) at kernel/qeventloop.cpp:204
#24 0x00007f5f62d9313b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1221
#25 0x00007f5f6354f06c in QApplication::exec () at kernel/qapplication.cpp:3823
#26 0x000000000040d963 in LancelotApplication::main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kdeplasma-addons-4.11.3/applets/lancelot/application/LancelotApplication.cpp:113
#27 0x00007f5f62578be5 in __libc_start_main () from /lib64/libc.so.6
#28 0x000000000040d999 in _start () at ../sysdeps/x86_64/start.S:122

Possible duplicates by query: bug 295976.

Reported using DrKonqi