Application: lancelot (1.9.5)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.16.0-38-generic x86_64
Distribution: Linux Mint 17.3 Rosa

-- Information about the crash:
- What I was doing when the application crashed:
For years, the lancelot launchers crashes when I add a application to favorites. Note: this only happens it the favorites column is full. A manual resizing of the laucher is required before adding a new item to prevent the crash. Otherwise the menu crashes every time. thanks

The crash can be reproduced every time.

-- Backtrace:
Application: Lancelot (lancelot), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f62c020b800 (LWP 28389))]

Thread 3 (Thread 0x7f629c9a1700 (LWP 28390)):
#0  0x00007f62bc57e82d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f62adc6ff75 in ?? () from /usr/lib/nvidia-352/tls/libnvidia-tls.so.352.63
#2  0x00007f62b400bc10 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f62b3fcab14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f62b3fcaf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f62b3fcb0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f62bcd067be in QEventDispatcherGlib::processEvents (this=0x7f62980008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007f62bccd80af in QEventLoop::processEvents (this=this@entry=0x7f629c9a0da0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f62bccd83a5 in QEventLoop::exec (this=this@entry=0x7f629c9a0da0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f62bcbd4c5f in QThread::exec (this=this@entry=0xbcc640) at thread/qthread.cpp:537
#10 0x00007f62bccb9823 in QInotifyFileSystemWatcherEngine::run (this=0xbcc640) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007f62bcbd732f in QThreadPrivate::start (arg=0xbcc640) at thread/qthread_unix.cpp:349
#12 0x00007f62b48eb182 in start_thread (arg=0x7f629c9a1700) at pthread_create.c:312
#13 0x00007f62bc58d47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f6292d6b700 (LWP 28391)):
#0  0x00007f62b48ee7ee in __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7f628c000a80) at pthread_mutex_unlock.c:57
#1  __GI___pthread_mutex_unlock (mutex=0x7f628c000a80) at pthread_mutex_unlock.c:310
#2  0x00007f62b400c9b1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f62b3fca680 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f62b3fcaf03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f62b3fcb0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f62bcd067be in QEventDispatcherGlib::processEvents (this=0x7f628c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007f62bccd80af in QEventLoop::processEvents (this=this@entry=0x7f6292d6ada0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f62bccd83a5 in QEventLoop::exec (this=this@entry=0x7f6292d6ada0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f62bcbd4c5f in QThread::exec (this=this@entry=0xbb42e0) at thread/qthread.cpp:537
#10 0x00007f62bccb9823 in QInotifyFileSystemWatcherEngine::run (this=0xbb42e0) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007f62bcbd732f in QThreadPrivate::start (arg=0xbb42e0) at thread/qthread_unix.cpp:349
#12 0x00007f62b48eb182 in start_thread (arg=0x7f6292d6b700) at pthread_create.c:312
#13 0x00007f62bc58d47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f62c020b800 (LWP 28389)):
[KCrash Handler]
#6  size (this=<optimized out>) at /usr/include/qt4/QtCore/qlist.h:98
#7  size (this=<optimized out>) at /usr/include/qt4/QtCore/qlist.h:137
#8  Lancelot::Models::Applications::contextActivate (this=0x1, index=1, context=0x2329480) at ../../../libs/lancelot-datamodels/Applications.cpp:307
#9  0x00007f62bf24bd64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x226afa0, sender=sender@entry=0x22ee9b0, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621
#10 0x00007f62bf24be76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x22ee9b0, event=0x7ffdbcef7620) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
#11 0x00007f62bda2f655 in QGraphicsItem::sceneEvent (this=0x22ee9c0, event=0x7ffdbcef7620) at graphicsview/qgraphicsitem.cpp:6725
#12 0x00007f62bda567aa in QGraphicsScene::contextMenuEvent (this=<optimized out>, contextMenuEvent=0x7ffdbcef7620) at graphicsview/qgraphicsscene.cpp:3617
#13 0x00007f62bda6b275 in QGraphicsScene::event (this=0xa57c40, event=0x7ffdbcef7620) at graphicsview/qgraphicsscene.cpp:3412
#14 0x00007f62bd485e2c in QApplicationPrivate::notify_helper (this=this@entry=0x963d20, receiver=receiver@entry=0xa57c40, e=e@entry=0x7ffdbcef7620) at kernel/qapplication.cpp:4567
#15 0x00007f62bd48c4a0 in QApplication::notify (this=this@entry=0x94c2e0, receiver=receiver@entry=0xa57c40, e=e@entry=0x7ffdbcef7620) at kernel/qapplication.cpp:4353
#16 0x00007f62be651cca in KApplication::notify (this=0x94c2e0, receiver=0xa57c40, event=0x7ffdbcef7620) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f62bccd94dd in QCoreApplication::notifyInternal (this=0x94c2e0, receiver=0xa57c40, event=event@entry=0x7ffdbcef7620) at kernel/qcoreapplication.cpp:953
#18 0x00007f62bda82da7 in sendEvent (event=0x7ffdbcef7620, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#19 QGraphicsView::contextMenuEvent (this=0xb3c880, event=0x7ffdbcef7af0) at graphicsview/qgraphicsview.cpp:2892
#20 0x00007f62bd4d57e2 in QWidget::event (this=this@entry=0xb3c880, event=event@entry=0x7ffdbcef7af0) at kernel/qwidget.cpp:8554
#21 0x00007f62bd87704e in QFrame::event (this=0xb3c880, e=0x7ffdbcef7af0) at widgets/qframe.cpp:557
#22 0x00007f62bda82859 in QGraphicsView::viewportEvent (this=0xb3c880, event=0x7ffdbcef7af0) at graphicsview/qgraphicsview.cpp:2866
#23 0x00007f62bccd9646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x963d20, receiver=receiver@entry=0xb45a70, event=event@entry=0x7ffdbcef7af0) at kernel/qcoreapplication.cpp:1063
#24 0x00007f62bd485e0c in QApplicationPrivate::notify_helper (this=this@entry=0x963d20, receiver=receiver@entry=0xb45a70, e=e@entry=0x7ffdbcef7af0) at kernel/qapplication.cpp:4563
#25 0x00007f62bd48d1f8 in QApplication::notify (this=this@entry=0x94c2e0, receiver=receiver@entry=0xb45a70, e=e@entry=0x7ffdbcef7af0) at kernel/qapplication.cpp:4189
#26 0x00007f62be651cca in KApplication::notify (this=0x94c2e0, receiver=0xb45a70, event=0x7ffdbcef7af0) at ../../kdeui/kernel/kapplication.cpp:311
#27 0x00007f62bccd94dd in QCoreApplication::notifyInternal (this=0x94c2e0, receiver=receiver@entry=0xb45a70, event=event@entry=0x7ffdbcef7af0) at kernel/qcoreapplication.cpp:953
#28 0x00007f62bd500a40 in sendSpontaneousEvent (event=0x7ffdbcef7af0, receiver=0xb45a70) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#29 QETWidget::translateMouseEvent (this=this@entry=0xb3c880, event=event@entry=0x7ffdbcef7e40) at kernel/qapplication_x11.cpp:4639
#30 0x00007f62bd500289 in QApplication::x11ProcessEvent (this=0x94c2e0, event=event@entry=0x7ffdbcef7e40) at kernel/qapplication_x11.cpp:3627
#31 0x00007f62bd527b32 in x11EventSourceDispatch (s=0x964110, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#32 0x00007f62b3fcae04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f62b3fcb048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f62b3fcb0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f62bcd067a1 in QEventDispatcherGlib::processEvents (this=0x8bb990, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#36 0x00007f62bd527be6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#37 0x00007f62bccd80af in QEventLoop::processEvents (this=this@entry=0x7ffdbcef8210, flags=...) at kernel/qeventloop.cpp:149
#38 0x00007f62bccd83a5 in QEventLoop::exec (this=this@entry=0x7ffdbcef8210, flags=...) at kernel/qeventloop.cpp:204
#39 0x00007f62bccddb79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#40 0x00007f62bd48437c in QApplication::exec () at kernel/qapplication.cpp:3828
#41 0x000000000040cde3 in LancelotApplication::main (argc=<optimized out>, argv=<optimized out>) at ../../../../applets/lancelot/application/LancelotApplication.cpp:113
#42 0x00007f62bc4b4ec5 in __libc_start_main (main=0x40cc90 <main(int, char**)>, argc=1, argv=0x7ffdbcef8378, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdbcef8368) at libc-start.c:287
#43 0x000000000040ce17 in _start ()

Reported using DrKonqi