Application: lancelot (1.9.5) KDE Platform Version: 4.11.3 Qt Version: 4.8.6 Operating System: Linux 3.12-1-amd64 x86_64 Distribution: Debian GNU/Linux testing (jessie) -- Information about the crash: - What I was doing when the application crashed: I right clicked an application and added it to favorites, immediately after I opened Lancelot again and the crash occurred. -- 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 0x7f5af4e2f780 (LWP 3252))] Thread 2 (Thread 0x7f5ad8a2e700 (LWP 3256)): #0 0x00007f5ae9a7be1f in __pthread_mutex_unlock_usercnt (mutex=0x7f5ad4000a60, decr=<optimized out>) at pthread_mutex_unlock.c:52 #1 0x00007f5ae8f96351 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5ae8f56726 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f5ae8f5691c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f5af18b3636 in QEventDispatcherGlib::processEvents (this=0x7f5ad40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:427 #5 0x00007f5af1884f9f in QEventLoop::processEvents (this=this@entry=0x7f5ad8a2ddb0, flags=...) at kernel/qeventloop.cpp:149 #6 0x00007f5af1885295 in QEventLoop::exec (this=this@entry=0x7f5ad8a2ddb0, flags=...) at kernel/qeventloop.cpp:204 #7 0x00007f5af1781c1f in QThread::exec (this=this@entry=0x2437f00) at thread/qthread.cpp:537 #8 0x00007f5af18667d3 in QInotifyFileSystemWatcherEngine::run (this=0x2437f00) at io/qfilesystemwatcher_inotify.cpp:256 #9 0x00007f5af17842ef in QThreadPrivate::start (arg=0x2437f00) at thread/qthread_unix.cpp:349 #10 0x00007f5ae9a78e0e in start_thread (arg=0x7f5ad8a2e700) at pthread_create.c:311 #11 0x00007f5af11420fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 Thread 1 (Thread 0x7f5af4e2f780 (LWP 3252)): [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=0x309479b, index=10, context=0x3a4e990) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007f5af3e33f84 in Lancelot::ActionListViewItemFactory::itemContext (this=0x43d5880, sender=sender@entry=0x44b43c0, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007f5af3e34096 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x44b43c0, event=0x7fff8ca5b3a0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109 #11 0x00007f5af25d6d95 in QGraphicsItem::sceneEvent (this=0x44b43d0, event=0x7fff8ca5b3a0) at graphicsview/qgraphicsitem.cpp:6725 #12 0x00007f5af25fdf4a in QGraphicsScene::contextMenuEvent (this=<optimized out>, contextMenuEvent=0x7fff8ca5b3a0) at graphicsview/qgraphicsscene.cpp:3617 #13 0x00007f5af2612a25 in QGraphicsScene::event (this=0x218c5a0, event=0x7fff8ca5b3a0) at graphicsview/qgraphicsscene.cpp:3412 #14 0x00007f5af20316cc in QApplicationPrivate::notify_helper (this=this@entry=0x2023fe0, receiver=receiver@entry=0x218c5a0, e=e@entry=0x7fff8ca5b3a0) at kernel/qapplication.cpp:4567 #15 0x00007f5af2037d40 in QApplication::notify (this=this@entry=0x1fff2c0, receiver=receiver@entry=0x218c5a0, e=e@entry=0x7fff8ca5b3a0) at kernel/qapplication.cpp:4353 #16 0x00007f5af322849a in KApplication::notify (this=0x1fff2c0, receiver=0x218c5a0, event=0x7fff8ca5b3a0) at ../../kdeui/kernel/kapplication.cpp:311 #17 0x00007f5af18863cd in QCoreApplication::notifyInternal (this=0x1fff2c0, receiver=0x218c5a0, event=event@entry=0x7fff8ca5b3a0) at kernel/qcoreapplication.cpp:953 #18 0x00007f5af262a597 in sendEvent (event=0x7fff8ca5b3a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #19 QGraphicsView::contextMenuEvent (this=0x2183540, event=0x7fff8ca5b870) at graphicsview/qgraphicsview.cpp:2892 #20 0x00007f5af2080f92 in QWidget::event (this=this@entry=0x2183540, event=event@entry=0x7fff8ca5b870) at kernel/qwidget.cpp:8554 #21 0x00007f5af241ec5e in QFrame::event (this=0x2183540, e=0x7fff8ca5b870) at widgets/qframe.cpp:557 #22 0x00007f5af262a049 in QGraphicsView::viewportEvent (this=0x2183540, event=0x7fff8ca5b870) at graphicsview/qgraphicsview.cpp:2866 #23 0x00007f5af1886536 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x2023fe0, receiver=receiver@entry=0x216f730, event=event@entry=0x7fff8ca5b870) at kernel/qcoreapplication.cpp:1063 #24 0x00007f5af20316ac in QApplicationPrivate::notify_helper (this=this@entry=0x2023fe0, receiver=receiver@entry=0x216f730, e=e@entry=0x7fff8ca5b870) at kernel/qapplication.cpp:4563 #25 0x00007f5af2038aa8 in QApplication::notify (this=this@entry=0x1fff2c0, receiver=receiver@entry=0x216f730, e=e@entry=0x7fff8ca5b870) at kernel/qapplication.cpp:4189 #26 0x00007f5af322849a in KApplication::notify (this=0x1fff2c0, receiver=0x216f730, event=0x7fff8ca5b870) at ../../kdeui/kernel/kapplication.cpp:311 #27 0x00007f5af18863cd in QCoreApplication::notifyInternal (this=0x1fff2c0, receiver=receiver@entry=0x216f730, event=event@entry=0x7fff8ca5b870) at kernel/qcoreapplication.cpp:953 #28 0x00007f5af20a9360 in sendSpontaneousEvent (event=0x7fff8ca5b870, receiver=0x216f730) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234 #29 QETWidget::translateMouseEvent (this=this@entry=0x2183540, event=event@entry=0x7fff8ca5bbb0) at kernel/qapplication_x11.cpp:4545 #30 0x00007f5af20a7d7c in QApplication::x11ProcessEvent (this=0x1fff2c0, event=event@entry=0x7fff8ca5bbb0) at kernel/qapplication_x11.cpp:3663 #31 0x00007f5af20cf6c2 in x11EventSourceDispatch (s=0x2024380, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #32 0x00007f5ae8f56526 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #33 0x00007f5ae8f56878 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #34 0x00007f5ae8f5691c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #35 0x00007f5af18b3615 in QEventDispatcherGlib::processEvents (this=0x1fc2af0, flags=...) at kernel/qeventdispatcher_glib.cpp:425 #36 0x00007f5af20cf776 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #37 0x00007f5af1884f9f in QEventLoop::processEvents (this=this@entry=0x7fff8ca5bf90, flags=...) at kernel/qeventloop.cpp:149 #38 0x00007f5af1885295 in QEventLoop::exec (this=this@entry=0x7fff8ca5bf90, flags=...) at kernel/qeventloop.cpp:204 #39 0x00007f5af188aa69 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225 #40 0x00007f5af202fe8c 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 0x00007f5af107a995 in __libc_start_main (main=0x40cc90 <main(int, char**)>, argc=1, ubp_av=0x7fff8ca5c0f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff8ca5c0e8) at libc-start.c:276 #43 0x000000000040ce17 in _start () Possible duplicates by query: bug 281909. Reported using DrKonqi
I just hit this bug too, but slightly differently. Lancelot crashed immediately after added the favourite. Now, when I click on the launcer icon, nothing happens at all.
I hit probably the same bug, here is my crash report: Application: lancelot (1.9.5) KDE Platform Version: 4.12.97 Qt Version: 4.8.6 Operating System: Linux 3.13.0-23-generic x86_64 Distribution: Ubuntu Trusty Tahr (development branch) -- Information about the crash: added muon to favourites, this crashed lancelot immediately. 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 0x7fcaa833d800 (LWP 5782))] Thread 3 (Thread 0x7fca842fc700 (LWP 5787)): #0 0x00007fca9be6e62d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007fca9be6e989 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fca9be2ced5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fca9be2d0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fcaa4e247be in QEventDispatcherGlib::processEvents (this=0x7fca7c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436 #5 0x00007fcaa4df60af in QEventLoop::processEvents (this=this@entry=0x7fca842fbda0, flags=...) at kernel/qeventloop.cpp:149 #6 0x00007fcaa4df63a5 in QEventLoop::exec (this=this@entry=0x7fca842fbda0, flags=...) at kernel/qeventloop.cpp:204 #7 0x00007fcaa4cf2c5f in QThread::exec (this=this@entry=0x1d64640) at thread/qthread.cpp:537 #8 0x00007fcaa4dd7823 in QInotifyFileSystemWatcherEngine::run (this=0x1d64640) at io/qfilesystemwatcher_inotify.cpp:265 #9 0x00007fcaa4cf532f in QThreadPrivate::start (arg=0x1d64640) at thread/qthread_unix.cpp:349 #10 0x00007fca9c74d182 in start_thread (arg=0x7fca842fc700) at pthread_create.c:312 #11 0x00007fcaa46ab30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 2 (Thread 0x7fca838b9700 (LWP 5788)): #0 0x00007fca9be6e62a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007fca9be6e9b9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fca9be2c0f0 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fca9be2cea5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fca9be2d0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007fcaa4e247be in QEventDispatcherGlib::processEvents (this=0x7fca700008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436 #6 0x00007fcaa4df60af in QEventLoop::processEvents (this=this@entry=0x7fca838b8da0, flags=...) at kernel/qeventloop.cpp:149 #7 0x00007fcaa4df63a5 in QEventLoop::exec (this=this@entry=0x7fca838b8da0, flags=...) at kernel/qeventloop.cpp:204 #8 0x00007fcaa4cf2c5f in QThread::exec (this=this@entry=0x201fe70) at thread/qthread.cpp:537 #9 0x00007fcaa4dd7823 in QInotifyFileSystemWatcherEngine::run (this=0x201fe70) at io/qfilesystemwatcher_inotify.cpp:265 #10 0x00007fcaa4cf532f in QThreadPrivate::start (arg=0x201fe70) at thread/qthread_unix.cpp:349 #11 0x00007fca9c74d182 in start_thread (arg=0x7fca838b9700) at pthread_create.c:312 #12 0x00007fcaa46ab30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 1 (Thread 0x7fcaa833d800 (LWP 5782)): [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=10, context=0x2f3f090) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007fcaa7369d64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x26ab050, sender=sender@entry=0x2bdb420, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007fcaa7369e76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x2bdb420, event=0x7fff78b648f0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109 #11 0x00007fcaa5b4d5b5 in QGraphicsItem::sceneEvent (this=0x2bdb430, event=0x7fff78b648f0) at graphicsview/qgraphicsitem.cpp:6725 #12 0x00007fcaa5b7470a in QGraphicsScene::contextMenuEvent (this=<optimized out>, contextMenuEvent=0x7fff78b648f0) at graphicsview/qgraphicsscene.cpp:3617 #13 0x00007fcaa5b891d5 in QGraphicsScene::event (this=0x1ca80f0, event=0x7fff78b648f0) at graphicsview/qgraphicsscene.cpp:3412 #14 0x00007fcaa55a3e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1b5be40, receiver=receiver@entry=0x1ca80f0, e=e@entry=0x7fff78b648f0) at kernel/qapplication.cpp:4567 #15 0x00007fcaa55aa4a0 in QApplication::notify (this=this@entry=0x1b2da40, receiver=receiver@entry=0x1ca80f0, e=e@entry=0x7fff78b648f0) at kernel/qapplication.cpp:4353 #16 0x00007fcaa676fbaa in KApplication::notify (this=0x1b2da40, receiver=0x1ca80f0, event=0x7fff78b648f0) at ../../kdeui/kernel/kapplication.cpp:311 #17 0x00007fcaa4df74dd in QCoreApplication::notifyInternal (this=0x1b2da40, receiver=0x1ca80f0, event=event@entry=0x7fff78b648f0) at kernel/qcoreapplication.cpp:953 #18 0x00007fcaa5ba0d07 in sendEvent (event=0x7fff78b648f0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #19 QGraphicsView::contextMenuEvent (this=0x1c91d20, event=0x7fff78b64dc0) at graphicsview/qgraphicsview.cpp:2892 #20 0x00007fcaa55f37d2 in QWidget::event (this=this@entry=0x1c91d20, event=event@entry=0x7fff78b64dc0) at kernel/qwidget.cpp:8554 #21 0x00007fcaa5994fce in QFrame::event (this=0x1c91d20, e=0x7fff78b64dc0) at widgets/qframe.cpp:557 #22 0x00007fcaa5ba07b9 in QGraphicsView::viewportEvent (this=0x1c91d20, event=0x7fff78b64dc0) at graphicsview/qgraphicsview.cpp:2866 #23 0x00007fcaa4df7646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1b5be40, receiver=receiver@entry=0x1c8bf80, event=event@entry=0x7fff78b64dc0) at kernel/qcoreapplication.cpp:1063 #24 0x00007fcaa55a3e0c in QApplicationPrivate::notify_helper (this=this@entry=0x1b5be40, receiver=receiver@entry=0x1c8bf80, e=e@entry=0x7fff78b64dc0) at kernel/qapplication.cpp:4563 #25 0x00007fcaa55ab1f8 in QApplication::notify (this=this@entry=0x1b2da40, receiver=receiver@entry=0x1c8bf80, e=e@entry=0x7fff78b64dc0) at kernel/qapplication.cpp:4189 #26 0x00007fcaa676fbaa in KApplication::notify (this=0x1b2da40, receiver=0x1c8bf80, event=0x7fff78b64dc0) at ../../kdeui/kernel/kapplication.cpp:311 #27 0x00007fcaa4df74dd in QCoreApplication::notifyInternal (this=0x1b2da40, receiver=receiver@entry=0x1c8bf80, event=event@entry=0x7fff78b64dc0) at kernel/qcoreapplication.cpp:953 #28 0x00007fcaa561ea20 in sendSpontaneousEvent (event=0x7fff78b64dc0, receiver=0x1c8bf80) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234 #29 QETWidget::translateMouseEvent (this=this@entry=0x1c91d20, event=event@entry=0x7fff78b65110) at kernel/qapplication_x11.cpp:4639 #30 0x00007fcaa561e269 in QApplication::x11ProcessEvent (this=0x1b2da40, event=event@entry=0x7fff78b65110) at kernel/qapplication_x11.cpp:3627 #31 0x00007fcaa5645b02 in x11EventSourceDispatch (s=0x1b5bcf0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #32 0x00007fca9be2ce04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #33 0x00007fca9be2d048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #34 0x00007fca9be2d0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #35 0x00007fcaa4e247a1 in QEventDispatcherGlib::processEvents (this=0x1a98af0, flags=...) at kernel/qeventdispatcher_glib.cpp:434 #36 0x00007fcaa5645bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #37 0x00007fcaa4df60af in QEventLoop::processEvents (this=this@entry=0x7fff78b654e0, flags=...) at kernel/qeventloop.cpp:149 #38 0x00007fcaa4df63a5 in QEventLoop::exec (this=this@entry=0x7fff78b654e0, flags=...) at kernel/qeventloop.cpp:204 #39 0x00007fcaa4dfbb79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225 #40 0x00007fcaa55a237c 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 0x00007fcaa45d1ec5 in __libc_start_main (main=0x40cc90 <main(int, char**)>, argc=1, argv=0x7fff78b65648, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff78b65638) at libc-start.c:287 #43 0x000000000040ce17 in _start ()
Created attachment 86042 [details] New crash information added by DrKonqi lancelot (1.9.5) on KDE Platform 4.11.5 using Qt 4.8.6 - What I was doing when the application crashed: Trying to add chromium to the favorites of Lancelot. -- Backtrace (Reduced): #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=0x2c6b310) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007f15be5fcf84 in Lancelot::ActionListViewItemFactory::itemContext (this=0x28e3c70, sender=sender@entry=0x28e5e80, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007f15be5fd096 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x28e5e80, event=0x7fffa42009c0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
Created attachment 86181 [details] New crash information added by DrKonqi lancelot (1.9.5) on KDE Platform 4.13.0 using Qt 4.8.6 - What I was doing when the application crashed: Tried to add new favorites to the Lancelot Launcher. When adding, Lancelot crashes and restores the default favorites. Happens every time. -- Backtrace (Reduced): #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=2, context=0x20cb0c0) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007f37db07bd64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x22a6970, sender=sender@entry=0x1f1ddc0, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007f37db07be76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x1f1ddc0, event=0x7fff0e07e370) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
Created attachment 86351 [details] New crash information added by DrKonqi lancelot (1.9.5) on KDE Platform 4.13.0 using Qt 4.8.6 - What I was doing when the application crashed: Lancelot crashed after I added Chrome to Favorites. Chrome was actually never added. -- Backtrace (Reduced): #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=6, context=0x1da26d0) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007fbb0f657d64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x1abb9c0, sender=sender@entry=0x1b31120, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007fbb0f657e76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x1b31120, event=0x7ffff11941e0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
Same thing happens to me: Backtrace of the crash I experienced: 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 0x7fa953fec800 (LWP 1795))] Thread 2 (Thread 0x7fa92b3eb700 (LWP 1797)): #0 0x00007fa950347fbd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fa947ad4fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fa947ad50ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fa950ace7be in QEventDispatcherGlib::processEvents (this=0x7fa9240008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436 #4 0x00007fa950aa00af in QEventLoop::processEvents (this=this@entry=0x7fa92b3eada0, flags=...) at kernel/qeventloop.cpp:149 #5 0x00007fa950aa03a5 in QEventLoop::exec (this=this@entry=0x7fa92b3eada0, flags=...) at kernel/qeventloop.cpp:204 #6 0x00007fa95099cc5f in QThread::exec (this=this@entry=0x1ccabf0) at thread/qthread.cpp:537 #7 0x00007fa950a81823 in QInotifyFileSystemWatcherEngine::run (this=0x1ccabf0) at io/qfilesystemwatcher_inotify.cpp:265 #8 0x00007fa95099f32f in QThreadPrivate::start (arg=0x1ccabf0) at thread/qthread_unix.cpp:349 #9 0x00007fa9483f5182 in start_thread (arg=0x7fa92b3eb700) at pthread_create.c:312 #10 0x00007fa95035530d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 1 (Thread 0x7fa953fec800 (LWP 1795)): [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=0x1f6723b, index=2, context=0x277d0f0) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007fa953013d64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x21911f0, sender=sender@entry=0x2071b60, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007fa953013e76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x2071b60, event=0x7fffd469f4b0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109 #11 0x00007fa9517f75b5 in QGraphicsItem::sceneEvent (this=0x2071b70, event=0x7fffd469f4b0) at graphicsview/qgraphicsitem.cpp:6725 #12 0x00007fa95181e70a in QGraphicsScene::contextMenuEvent (this=<optimized out>, contextMenuEvent=0x7fffd469f4b0) at graphicsview/qgraphicsscene.cpp:3617 #13 0x00007fa9518331d5 in QGraphicsScene::event (this=0x19daf80, event=0x7fffd469f4b0) at graphicsview/qgraphicsscene.cpp:3412 #14 0x00007fa95124de2c in QApplicationPrivate::notify_helper (this=this@entry=0x18d5d00, receiver=receiver@entry=0x19daf80, e=e@entry=0x7fffd469f4b0) at kernel/qapplication.cpp:4567 #15 0x00007fa9512544a0 in QApplication::notify (this=this@entry=0x18aa810, receiver=receiver@entry=0x19daf80, e=e@entry=0x7fffd469f4b0) at kernel/qapplication.cpp:4353 #16 0x00007fa952419baa in KApplication::notify (this=0x18aa810, receiver=0x19daf80, event=0x7fffd469f4b0) at ../../kdeui/kernel/kapplication.cpp:311 #17 0x00007fa950aa14dd in QCoreApplication::notifyInternal (this=0x18aa810, receiver=0x19daf80, event=event@entry=0x7fffd469f4b0) at kernel/qcoreapplication.cpp:953 #18 0x00007fa95184ad07 in sendEvent (event=0x7fffd469f4b0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #19 QGraphicsView::contextMenuEvent (this=0x19d7ae0, event=0x7fffd469f980) at graphicsview/qgraphicsview.cpp:2892 #20 0x00007fa95129d7d2 in QWidget::event (this=this@entry=0x19d7ae0, event=event@entry=0x7fffd469f980) at kernel/qwidget.cpp:8554 #21 0x00007fa95163efce in QFrame::event (this=0x19d7ae0, e=0x7fffd469f980) at widgets/qframe.cpp:557 #22 0x00007fa95184a7b9 in QGraphicsView::viewportEvent (this=0x19d7ae0, event=0x7fffd469f980) at graphicsview/qgraphicsview.cpp:2866 #23 0x00007fa950aa1646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x18d5d00, receiver=receiver@entry=0x1a31470, event=event@entry=0x7fffd469f980) at kernel/qcoreapplication.cpp:1063 #24 0x00007fa95124de0c in QApplicationPrivate::notify_helper (this=this@entry=0x18d5d00, receiver=receiver@entry=0x1a31470, e=e@entry=0x7fffd469f980) at kernel/qapplication.cpp:4563 #25 0x00007fa9512551f8 in QApplication::notify (this=this@entry=0x18aa810, receiver=receiver@entry=0x1a31470, e=e@entry=0x7fffd469f980) at kernel/qapplication.cpp:4189 #26 0x00007fa952419baa in KApplication::notify (this=0x18aa810, receiver=0x1a31470, event=0x7fffd469f980) at ../../kdeui/kernel/kapplication.cpp:311 #27 0x00007fa950aa14dd in QCoreApplication::notifyInternal (this=0x18aa810, receiver=receiver@entry=0x1a31470, event=event@entry=0x7fffd469f980) at kernel/qcoreapplication.cpp:953 #28 0x00007fa9512c8a20 in sendSpontaneousEvent (event=0x7fffd469f980, receiver=0x1a31470) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234 #29 QETWidget::translateMouseEvent (this=this@entry=0x19d7ae0, event=event@entry=0x7fffd469fcd0) at kernel/qapplication_x11.cpp:4639 #30 0x00007fa9512c8269 in QApplication::x11ProcessEvent (this=0x18aa810, event=event@entry=0x7fffd469fcd0) at kernel/qapplication_x11.cpp:3627 #31 0x00007fa9512efb02 in x11EventSourceDispatch (s=0x18d5b30, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #32 0x00007fa947ad4e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #33 0x00007fa947ad5048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #34 0x00007fa947ad50ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #35 0x00007fa950ace7a1 in QEventDispatcherGlib::processEvents (this=0x1814af0, flags=...) at kernel/qeventdispatcher_glib.cpp:434 #36 0x00007fa9512efbb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #37 0x00007fa950aa00af in QEventLoop::processEvents (this=this@entry=0x7fffd46a00a0, flags=...) at kernel/qeventloop.cpp:149 #38 0x00007fa950aa03a5 in QEventLoop::exec (this=this@entry=0x7fffd46a00a0, flags=...) at kernel/qeventloop.cpp:204 #39 0x00007fa950aa5b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225 #40 0x00007fa95124c37c 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 0x00007fa95027bec5 in __libc_start_main (main=0x40cc90 <main(int, char**)>, argc=1, argv=0x7fffd46a0208, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffd46a01f8) at libc-start.c:287 #43 0x000000000040ce17 in _start ()
*** Bug 335061 has been marked as a duplicate of this bug. ***
Can not reproduce, although I got more than a few of these reports. Can you update to 4.13?
Created attachment 86786 [details] New crash information added by DrKonqi lancelot (1.9.5) on KDE Platform 4.13.1 using Qt 4.8.6 Still crashes with KDE 4.13.1. - What I was doing when the application crashed: Attempted to add application to favourites. -- Backtrace (Reduced): #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=31, context=0x43ee210) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007f836e748d64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x4439f10, sender=sender@entry=0x4491870, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007f836e748e76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x4491870, event=0x7fff2164b980) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
(In reply to comment #8) > Can not reproduce, although I got more than a few of these reports. > > Can you update to 4.13? Happens to me on KDE 4.13 as well. -- 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 0x7f1d39f02800 (LWP 3182))] Thread 2 (Thread 0x7f1d10ed8700 (LWP 3183)): #0 0x00007f1d36260fbd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007f1d2d9edfe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f1d2d9ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f1d369e77be in QEventDispatcherGlib::processEvents (this=0x7f1d0c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436 #4 0x00007f1d369b90af in QEventLoop::processEvents (this=this@entry=0x7f1d10ed7da0, flags=...) at kernel/qeventloop.cpp:149 #5 0x00007f1d369b93a5 in QEventLoop::exec (this=this@entry=0x7f1d10ed7da0, flags=...) at kernel/qeventloop.cpp:204 #6 0x00007f1d368b5c5f in QThread::exec (this=this@entry=0x1f09d10) at thread/qthread.cpp:537 #7 0x00007f1d3699a823 in QInotifyFileSystemWatcherEngine::run (this=0x1f09d10) at io/qfilesystemwatcher_inotify.cpp:265 #8 0x00007f1d368b832f in QThreadPrivate::start (arg=0x1f09d10) at thread/qthread_unix.cpp:349 #9 0x00007f1d2e30e182 in start_thread (arg=0x7f1d10ed8700) at pthread_create.c:312 #10 0x00007f1d3626e30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 1 (Thread 0x7f1d39f02800 (LWP 3182)): [KCrash Handler] #6 QString (other=..., this=<optimized out>) at /usr/include/qt4/QtCore/qstring.h:725 #7 Lancelot::Models::Applications::contextActivate (this=0x1e74b70, index=258362611, context=0x1eccddf4) at ../../../libs/lancelot-datamodels/Applications.cpp:310 #8 0x00007f1d38f2cd64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x2bab780, sender=sender@entry=0x2e42aa0, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #9 0x00007f1d38f2ce76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x2e42aa0, event=0x7fffcce1dcc0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109 #10 0x00007f1d377105b5 in QGraphicsItem::sceneEvent (this=0x2e42ab0, event=0x7fffcce1dcc0) at graphicsview/qgraphicsitem.cpp:6725 #11 0x00007f1d3773770a in QGraphicsScene::contextMenuEvent (this=<optimized out>, contextMenuEvent=0x7fffcce1dcc0) at graphicsview/qgraphicsscene.cpp:3617 #12 0x00007f1d3774c1d5 in QGraphicsScene::event (this=0x1c78ec0, event=0x7fffcce1dcc0) at graphicsview/qgraphicsscene.cpp:3412 #13 0x00007f1d37166e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1b0c0a0, receiver=receiver@entry=0x1c78ec0, e=e@entry=0x7fffcce1dcc0) at kernel/qapplication.cpp:4567 #14 0x00007f1d3716d4a0 in QApplication::notify (this=this@entry=0x1ae0800, receiver=receiver@entry=0x1c78ec0, e=e@entry=0x7fffcce1dcc0) at kernel/qapplication.cpp:4353 #15 0x00007f1d38332baa in KApplication::notify (this=0x1ae0800, receiver=0x1c78ec0, event=0x7fffcce1dcc0) at ../../kdeui/kernel/kapplication.cpp:311 #16 0x00007f1d369ba4dd in QCoreApplication::notifyInternal (this=0x1ae0800, receiver=0x1c78ec0, event=event@entry=0x7fffcce1dcc0) at kernel/qcoreapplication.cpp:953 #17 0x00007f1d37763d07 in sendEvent (event=0x7fffcce1dcc0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #18 QGraphicsView::contextMenuEvent (this=0x1c7a6c0, event=0x7fffcce1e190) at graphicsview/qgraphicsview.cpp:2892 #19 0x00007f1d371b67d2 in QWidget::event (this=this@entry=0x1c7a6c0, event=event@entry=0x7fffcce1e190) at kernel/qwidget.cpp:8554 #20 0x00007f1d37557fce in QFrame::event (this=0x1c7a6c0, e=0x7fffcce1e190) at widgets/qframe.cpp:557 #21 0x00007f1d377637b9 in QGraphicsView::viewportEvent (this=0x1c7a6c0, event=0x7fffcce1e190) at graphicsview/qgraphicsview.cpp:2866 #22 0x00007f1d369ba646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1b0c0a0, receiver=receiver@entry=0x1c387a0, event=event@entry=0x7fffcce1e190) at kernel/qcoreapplication.cpp:1063 #23 0x00007f1d37166e0c in QApplicationPrivate::notify_helper (this=this@entry=0x1b0c0a0, receiver=receiver@entry=0x1c387a0, e=e@entry=0x7fffcce1e190) at kernel/qapplication.cpp:4563 #24 0x00007f1d3716e1f8 in QApplication::notify (this=this@entry=0x1ae0800, receiver=receiver@entry=0x1c387a0, e=e@entry=0x7fffcce1e190) at kernel/qapplication.cpp:4189 #25 0x00007f1d38332baa in KApplication::notify (this=0x1ae0800, receiver=0x1c387a0, event=0x7fffcce1e190) at ../../kdeui/kernel/kapplication.cpp:311 #26 0x00007f1d369ba4dd in QCoreApplication::notifyInternal (this=0x1ae0800, receiver=receiver@entry=0x1c387a0, event=event@entry=0x7fffcce1e190) at kernel/qcoreapplication.cpp:953 #27 0x00007f1d371e1a20 in sendSpontaneousEvent (event=0x7fffcce1e190, receiver=0x1c387a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234 #28 QETWidget::translateMouseEvent (this=this@entry=0x1c7a6c0, event=event@entry=0x7fffcce1e4e0) at kernel/qapplication_x11.cpp:4639 #29 0x00007f1d371e1269 in QApplication::x11ProcessEvent (this=0x1ae0800, event=event@entry=0x7fffcce1e4e0) at kernel/qapplication_x11.cpp:3627 #30 0x00007f1d37208b02 in x11EventSourceDispatch (s=0x1afe0f0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #31 0x00007f1d2d9ede04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #32 0x00007f1d2d9ee048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #33 0x00007f1d2d9ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #34 0x00007f1d369e77a1 in QEventDispatcherGlib::processEvents (this=0x1a4aaf0, flags=...) at kernel/qeventdispatcher_glib.cpp:434 #35 0x00007f1d37208bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #36 0x00007f1d369b90af in QEventLoop::processEvents (this=this@entry=0x7fffcce1e8b0, flags=...) at kernel/qeventloop.cpp:149 #37 0x00007f1d369b93a5 in QEventLoop::exec (this=this@entry=0x7fffcce1e8b0, flags=...) at kernel/qeventloop.cpp:204 #38 0x00007f1d369beb79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225 #39 0x00007f1d3716537c in QApplication::exec () at kernel/qapplication.cpp:3828 #40 0x000000000040cde3 in LancelotApplication::main (argc=<optimized out>, argv=<optimized out>) at ../../../../applets/lancelot/application/LancelotApplication.cpp:113 #41 0x00007f1d36194ec5 in __libc_start_main (main=0x40cc90 <main(int, char**)>, argc=1, argv=0x7fffcce1ea18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcce1ea08) at libc-start.c:287 #42 0x000000000040ce17 in _start ()
Created attachment 87239 [details] New crash information added by DrKonqi lancelot (1.9.5) on KDE Platform 4.13.1 using Qt 4.8.6 - What I was doing when the application crashed: Right-clicked an application in Lancelot to add it to Favorites -- Backtrace (Reduced): #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=163, context=0x34ec1f0) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007f1ac5d59d64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x3208640, sender=sender@entry=0x3275720, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007f1ac5d59e76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x3275720, event=0x7fffcc6cf7c0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
Created attachment 87266 [details] New crash information added by DrKonqi lancelot (1.9.5) on KDE Platform 4.13.1 using Qt 4.8.6 - What I was doing when the application crashed: Migrating an application icon in the panel of the favorites panel application. -- Backtrace (Reduced): #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=7, context=0x1cd8e90) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007f71f80d7d64 in Lancelot::ActionListViewItemFactory::itemContext (this=0xf71ff0, sender=sender@entry=0x10c78e0, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007f71f80d7e76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x10c78e0, event=0x7fffba44f690) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
Created attachment 87416 [details] New crash information added by DrKonqi lancelot (1.9.5) on KDE Platform 4.13.1 using Qt 4.8.6 - What I was doing when the application crashed: I right clicked an application and added it to favorites, -- Backtrace (Reduced): #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=0x7465676469576577, index=0, context=0x288a9f0) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007faf178ebd64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x286d070, sender=sender@entry=0x2891040, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007faf178ebe76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x2891040, event=0x7fff1ab462b0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
I am also getting this crash as of KDE 4.13.1 with QT 4.8.6
Update to KDE4.14 via the backports ppa fixes this bug for me on Kubuntu 14.04 x86_64.
Still crashes for me for KDE 4.14.1 in Arch Linux.
Application: lancelot (1.9.5) KDE Platform Version: 4.13.3 Qt Version: 4.8.6 Operating System: Linux 3.13.0-39-generic i686 Distribution: Ubuntu 14.04.1 LTS -- Information about the crash: - What I was doing when the application crashed: I right clicked on an application then clicked Add To Favorites and Lancelot crashed. -- Backtrace: Application: Lancelot (lancelot), signal: Segmentation fault Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0xb0f47740 (LWP 1890))] Thread 3 (Thread 0xa93d0b40 (LWP 1891)): #0 0xb778e424 in __kernel_vsyscall () #1 0xb593756b in poll () at ../sysdeps/unix/syscall-template.S:81 #2 0xb229f20b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0 #3 0xb22903e8 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #4 0xb2290528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #5 0xb5c9c95f in QEventDispatcherGlib::processEvents (this=0xa8a00468, flags=...) at kernel/qeventdispatcher_glib.cpp:436 #6 0xb5c6b823 in QEventLoop::processEvents (this=this@entry=0xa93d0258, flags=...) at kernel/qeventloop.cpp:149 #7 0xb5c6bb49 in QEventLoop::exec (this=this@entry=0xa93d0258, flags=...) at kernel/qeventloop.cpp:204 #8 0xb5b5823d in QThread::exec (this=this@entry=0x8bb2408) at thread/qthread.cpp:537 #9 0xb5c4bc44 in QInotifyFileSystemWatcherEngine::run (this=0x8bb2408) at io/qfilesystemwatcher_inotify.cpp:265 #10 0xb5b5ab6f in QThreadPrivate::start (arg=0x8bb2408) at thread/qthread_unix.cpp:349 #11 0xb23b6f70 in start_thread (arg=0xa93d0b40) at pthread_create.c:312 #12 0xb59464ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129 Thread 2 (Thread 0xa378db40 (LWP 1892)): #0 0xb778e424 in __kernel_vsyscall () #1 0xb5954152 in __GI___clock_gettime (clock_id=1, tp=0xa378cff8) at ../sysdeps/unix/clock_gettime.c:115 #2 0xb5bb58cc in do_gettime (frac=0xa378cff0, sec=0xa378cfe8) at tools/qelapsedtimer_unix.cpp:127 #3 qt_gettime () at tools/qelapsedtimer_unix.cpp:144 #4 0xb5c9e2a2 in updateCurrentTime (this=0xa2e026e4) at kernel/qeventdispatcher_unix.cpp:354 #5 QTimerInfoList::timerWait (this=0xa2e026e4, tm=...) at kernel/qeventdispatcher_unix.cpp:460 #6 0xb5c9c82b in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa378d0ec) at kernel/qeventdispatcher_glib.cpp:143 #7 0xb5c9c8bd in timerSourcePrepare (source=0xa2e026b0, timeout=0xa378d0ec) at kernel/qeventdispatcher_glib.cpp:176 #8 0xb228f9b3 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0 #9 0xb22902df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #10 0xb2290528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #11 0xb5c9c95f in QEventDispatcherGlib::processEvents (this=0xa2e00468, flags=...) at kernel/qeventdispatcher_glib.cpp:436 #12 0xb5c6b823 in QEventLoop::processEvents (this=this@entry=0xa378d258, flags=...) at kernel/qeventloop.cpp:149 #13 0xb5c6bb49 in QEventLoop::exec (this=this@entry=0xa378d258, flags=...) at kernel/qeventloop.cpp:204 #14 0xb5b5823d in QThread::exec (this=this@entry=0x8ccb168) at thread/qthread.cpp:537 #15 0xb5c4bc44 in QInotifyFileSystemWatcherEngine::run (this=0x8ccb168) at io/qfilesystemwatcher_inotify.cpp:265 #16 0xb5b5ab6f in QThreadPrivate::start (arg=0x8ccb168) at thread/qthread_unix.cpp:349 #17 0xb23b6f70 in start_thread (arg=0xa378db40) at pthread_create.c:312 #18 0xb59464ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129 Thread 1 (Thread 0xb0f47740 (LWP 1890)): [KCrash Handler] #7 size (this=<error reading variable: Cannot access memory at address 0x32>) at /usr/include/qt4/QtCore/qlist.h:98 #8 size (this=<error reading variable: Cannot access memory at address 0x32>) at /usr/include/qt4/QtCore/qlist.h:137 #9 Lancelot::Models::Applications::contextActivate (this=0x2a, index=index@entry=10, context=0x956e3f8) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #10 0xb7197f88 in Lancelot::ActionListViewItemFactory::itemContext (this=0x94826b0, sender=sender@entry=0x9514768, mouseCoordinate=false, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #11 0xb719811f in Lancelot::ActionListViewItem::contextMenuEvent (this=0x9514768, event=0xbffb61a0) at ../../../libs/lancelot/widgets/ActionListView.cpp:109 #12 0xb65deff8 in QGraphicsItem::sceneEvent (this=this@entry=0x9514770, event=event@entry=0xbffb61a0) at graphicsview/qgraphicsitem.cpp:6725 #13 0xb663b356 in QGraphicsWidget::sceneEvent (this=0x9514768, event=0xbffb61a0) at graphicsview/qgraphicswidget.cpp:1229 #14 0xb6608626 in QGraphicsScenePrivate::sendEvent (this=0x8b09d08, item=0x9514770, event=0xbffb61a0) at graphicsview/qgraphicsscene.cpp:1221 #15 0xb6608cc8 in QGraphicsScene::contextMenuEvent (this=0x8af3908, contextMenuEvent=0xbffb61a0) at graphicsview/qgraphicsscene.cpp:3617 #16 0xb661d94f in QGraphicsScene::event (this=0x8af3908, event=0xbffb61a0) at graphicsview/qgraphicsscene.cpp:3412 #17 0xb5f927f4 in QApplicationPrivate::notify_helper (this=0x89fab68, receiver=0x8af3908, e=0xbffb61a0) at kernel/qapplication.cpp:4567 #18 0xb5f992d3 in QApplication::notify (this=0x89ea140, receiver=receiver@entry=0x8af3908, e=e@entry=0xbffb61a0) at kernel/qapplication.cpp:4353 #19 0xb6d951f4 in KApplication::notify (this=0x89ea140, receiver=0x8af3908, event=0xbffb61a0) at ../../kdeui/kernel/kapplication.cpp:311 #20 0xb5c6ce4a in QCoreApplication::notifyInternal (this=0x89ea140, receiver=0x8af3908, event=event@entry=0xbffb61a0) at kernel/qcoreapplication.cpp:953 #21 0xb6638773 in sendEvent (event=0xbffb61a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #22 QGraphicsView::contextMenuEvent (this=0x8ab6c90, event=0xbffb6610) at graphicsview/qgraphicsview.cpp:2892 #23 0xb5fec718 in QWidget::event (this=this@entry=0x8ab6c90, event=event@entry=0xbffb6610) at kernel/qwidget.cpp:8554 #24 0xb63f278c in QFrame::event (this=this@entry=0x8ab6c90, e=e@entry=0xbffb6610) at widgets/qframe.cpp:557 #25 0xb6480e48 in QAbstractScrollArea::viewportEvent (this=this@entry=0x8ab6c90, e=e@entry=0xbffb6610) at widgets/qabstractscrollarea.cpp:1043 #26 0xb6638107 in QGraphicsView::viewportEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsview.cpp:2866 #27 0xb64810c6 in viewportEvent (event=0xbffb6610, this=<optimized out>) at widgets/qabstractscrollarea_p.h:100 #28 QAbstractScrollAreaFilter::eventFilter (this=0x8ac7db0, o=0x8ade1c0, e=0xbffb6610) at widgets/qabstractscrollarea_p.h:116 #29 0xb5c6cfbe in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x89fab68, receiver=receiver@entry=0x8ade1c0, event=event@entry=0xbffb6610) at kernel/qcoreapplication.cpp:1063 #30 0xb5f927d1 in QApplicationPrivate::notify_helper (this=0x89fab68, receiver=receiver@entry=0x8ade1c0, e=0xbffb6610) at kernel/qapplication.cpp:4563 #31 0xb5f9a9f3 in QApplication::notify (this=0x89ea140, receiver=receiver@entry=0x8ade1c0, e=e@entry=0xbffb6610) at kernel/qapplication.cpp:4189 #32 0xb6d951f4 in KApplication::notify (this=0x89ea140, receiver=0x8ade1c0, event=0xbffb6610) at ../../kdeui/kernel/kapplication.cpp:311 #33 0xb5c6ce4a in QCoreApplication::notifyInternal (this=0x89ea140, receiver=receiver@entry=0x8ade1c0, event=0xbffb6610) at kernel/qcoreapplication.cpp:953 #34 0xb601c809 in sendSpontaneousEvent (event=0xbffb6610, receiver=0x8ade1c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234 #35 QETWidget::translateMouseEvent (this=0x8ab6c90, event=event@entry=0xbffb685c) at kernel/qapplication_x11.cpp:4639 #36 0xb601bec5 in QApplication::x11ProcessEvent (this=0x89ea140, event=event@entry=0xbffb685c) at kernel/qapplication_x11.cpp:3627 #37 0xb6047524 in x11EventSourceDispatch (s=0x89f9500, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #38 0xb22901e3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0 #39 0xb2290468 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #40 0xb2290528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #41 0xb5c9c93b in QEventDispatcherGlib::processEvents (this=this@entry=0x89b8eb8, flags=...) at kernel/qeventdispatcher_glib.cpp:434 #42 0xb60475de in QGuiEventDispatcherGlib::processEvents (this=0x89b8eb8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #43 0xb5c6b823 in QEventLoop::processEvents (this=this@entry=0xbffb6b18, flags=...) at kernel/qeventloop.cpp:149 #44 0xb5c6bb49 in QEventLoop::exec (this=this@entry=0xbffb6b18, flags=...) at kernel/qeventloop.cpp:204 #45 0xb5c718fe in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225 #46 0xb5f90a24 in QApplication::exec () at kernel/qapplication.cpp:3828 #47 0x08052084 in LancelotApplication::main (argc=argc@entry=1, argv=argv@entry=0xbffb6c64) at ../../../../applets/lancelot/application/LancelotApplication.cpp:113 #48 0x08051f0b in main (argc=1, argv=0xbffb6c64) at ../../../../applets/lancelot/application/main.cpp:24 Possible duplicates by query: bug 335061, bug 331738. Report to https://bugs.kde.org/
*** Bug 342166 has been marked as a duplicate of this bug. ***
Created attachment 90123 [details] New crash information added by DrKonqi lancelot (1.9.5) on KDE Platform 4.14.2 using Qt 4.8.6 - What I was doing when the application crashed: - Unusual behavior I noticed: Archlinux , Opensuse , Kubuntu , LinuxMint behavior is the same and randomly depending on the application (some are going to add to your favorites and some crashes Lancelot) -- Backtrace (Reduced): #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=0x2f72751, index=20, context=0x33d1cc0) at ../../../libs/lancelot-datamodels/Applications.cpp:307 #9 0x00007fb0081ced64 in Lancelot::ActionListViewItemFactory::itemContext (this=0x25adf90, sender=sender@entry=0x305ab60, mouseCoordinate=<optimized out>, mouseCoordinate@entry=true) at ../../../libs/lancelot/widgets/ActionListView.cpp:621 #10 0x00007fb0081cee76 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x305ab60, event=0x7fff02081c00) at ../../../libs/lancelot/widgets/ActionListView.cpp:109
Lancelot for Plasma 4 is unmaintained.
I just had the same problem on kde 4.14.2 on debian 8.3 and may have figured out the problem (or at least a workaround). For me changing back the desktop theme to one of the default themes (e.g. Air) let me add entries to the favourites. After that i changed back to my current theme and everything seems to be working fine.