Application: step (0.1.0)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-15-generic x86_64
Distribution: Ubuntu 11.10

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

I had a spring, a disc, a pin and a circular motor when it was running and it crashed (ironically) when the disc (somehow) came off the spring and started flying off. I don't if this will make any effect at all, but meh.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Step (step), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f3f646d97a0 (LWP 9381))]

Thread 3 (Thread 0x7f3f4fd7d700 (LWP 9382)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3f60d3f1ab in wait (time=18446744073709551615, this=0xb80ac0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xb505f8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00000000004883fa in SimulationThread::run (this=0xb505d0) at ../../step/simulationthread.cc:29
#4  0x00007f3f60d3ed05 in QThreadPrivate::start (arg=0xb505d0) at thread/qthread_unix.cpp:331
#5  0x00007f3f63082efc in start_thread (arg=0x7f3f4fd7d700) at pthread_create.c:304
#6  0x00007f3f5f57b89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3f4d0e0700 (LWP 9383)):
#0  idleTimerSourcePrepare (source=<optimized out>, timeout=0x7f3f4d0dfc1c) at kernel/qeventdispatcher_glib.cpp:207
#1  0x00007f3f5caeeff2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3f5caefdfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3f5caf0429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3f60e50f3e in QEventDispatcherGlib::processEvents (this=0xeb8c80, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f3f60e24cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f3f60e24ef7 in QEventLoop::exec (this=0x7f3f4d0dfdb0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f3f60d3c27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f3f60e07cbf in QInotifyFileSystemWatcherEngine::run (this=0xeb8080) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f3f60d3ed05 in QThreadPrivate::start (arg=0xeb8080) at thread/qthread_unix.cpp:331
#10 0x00007f3f63082efc in start_thread (arg=0x7f3f4d0e0700) at pthread_create.c:304
#11 0x00007f3f5f57b89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3f646d97a0 (LWP 9381)):
[KCrash Handler]
#6  QGraphicsScenePrivate::markDirty (this=0x0, item=0x1333cb0, rect=..., invalidateChildren=false, force=false, ignoreOpacity=false, removingItemFromScene=false, updateBoundingRect=false) at graphicsview/qgraphicsscene.cpp:4990
#7  0x00007f3f607a0485 in update (rect=..., this=0x1333cb0) at graphicsview/qgraphicsitem.cpp:5708
#8  QGraphicsItem::update (this=0x1333cb0, rect=...) at graphicsview/qgraphicsitem.cpp:5681
#9  0x000000000043dba0 in setItemHighlighted (highlighted=false, this=<optimized out>) at ../../step/worldgraphics.h:198
#10 WorldScene::snapClear (this=0xc40960) at ../../step/worldscene.cc:445
#11 0x00000000004404d1 in WorldScene::snapHighlight (this=0xc40960, pos=..., flags=..., moreTypes=0x0) at ../../step/worldscene.cc:487
#12 0x0000000000444686 in AttachableItemCreator::sceneEvent (this=0x129b570, event=0x7fffa1cb0fc0) at ../../step/worldgraphics.cc:117
#13 0x000000000043d7c8 in WorldScene::event (this=0xc40960, event=0x7fffa1cb0fc0) at ../../step/worldscene.cc:220
#14 0x00007f3f601d6424 in notify_helper (e=0x7fffa1cb0fc0, receiver=0xc40960, this=0x8bfaa0) at kernel/qapplication.cpp:4486
#15 QApplicationPrivate::notify_helper (this=0x8bfaa0, receiver=0xc40960, e=0x7fffa1cb0fc0) at kernel/qapplication.cpp:4458
#16 0x00007f3f601db291 in QApplication::notify (this=0x7fffa1cb2550, receiver=0xc40960, e=0x7fffa1cb0fc0) at kernel/qapplication.cpp:4365
#17 0x00007f3f6185b126 in KApplication::notify (this=0x7fffa1cb2550, receiver=0xc40960, event=0x7fffa1cb0fc0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f3f60e25afc in QCoreApplication::notifyInternal (this=0x7fffa1cb2550, receiver=0xc40960, event=0x7fffa1cb0fc0) at kernel/qcoreapplication.cpp:787
#19 0x00007f3f607ee8d9 in QGraphicsViewPrivate::mouseMoveEventHandler (this=0xeab620, event=0x7fffa1cb18f0) at graphicsview/qgraphicsview.cpp:647
#20 0x00007f3f607eeafe in QGraphicsView::mouseMoveEvent (this=0xc3c530, event=0x7fffa1cb18f0) at graphicsview/qgraphicsview.cpp:3274
#21 0x00007f3f60226cce in QWidget::event (this=0xc3c530, event=0x7fffa1cb18f0) at kernel/qwidget.cpp:8280
#22 0x00007f3f605cf4f6 in QFrame::event (this=0xc3c530, e=0x7fffa1cb18f0) at widgets/qframe.cpp:557
#23 0x00007f3f607f2d3b in QGraphicsView::viewportEvent (this=0xc3c530, event=0x7fffa1cb18f0) at graphicsview/qgraphicsview.cpp:2864
#24 0x00007f3f60e25c88 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0xdaa7f0, event=0x7fffa1cb18f0) at kernel/qcoreapplication.cpp:902
#25 0x00007f3f601d63ef in notify_helper (e=0x7fffa1cb18f0, receiver=0xdaa7f0, this=0x8bfaa0) at kernel/qapplication.cpp:4482
#26 QApplicationPrivate::notify_helper (this=0x8bfaa0, receiver=0xdaa7f0, e=0x7fffa1cb18f0) at kernel/qapplication.cpp:4458
#27 0x00007f3f601dbc6b in QApplication::notify (this=<optimized out>, receiver=0xdaa7f0, e=0x7fffa1cb18f0) at kernel/qapplication.cpp:4047
#28 0x00007f3f6185b126 in KApplication::notify (this=0x7fffa1cb2550, receiver=0xdaa7f0, event=0x7fffa1cb18f0) at ../../kdeui/kernel/kapplication.cpp:311
#29 0x00007f3f60e25afc in QCoreApplication::notifyInternal (this=0x7fffa1cb2550, receiver=0xdaa7f0, event=0x7fffa1cb18f0) at kernel/qcoreapplication.cpp:787
#30 0x00007f3f601d73f2 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#31 QApplicationPrivate::sendMouseEvent (receiver=0xdaa7f0, event=0x7fffa1cb18f0, alienWidget=0xdaa7f0, nativeWidget=0xc3c530, buttonDown=0x0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3146
#32 0x00007f3f60256945 in QETWidget::translateMouseEvent (this=0xc3c530, event=<optimized out>) at kernel/qapplication_x11.cpp:4568
#33 0x00007f3f602561c9 in QApplication::x11ProcessEvent (this=0x7fffa1cb2550, event=0x7fffa1cb2110) at kernel/qapplication_x11.cpp:3769
#34 0x00007f3f6027e412 in x11EventSourceDispatch (s=0x8c2ab0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#35 0x00007f3f5caefa5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f3f5caf0258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f3f5caf0429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f3f60e50ed6 in QEventDispatcherGlib::processEvents (this=0x876fa0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#39 0x00007f3f6027e07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#40 0x00007f3f60e24cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#41 0x00007f3f60e24ef7 in QEventLoop::exec (this=0x7fffa1cb24e0, flags=...) at kernel/qeventloop.cpp:201
#42 0x00007f3f60e29789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#43 0x0000000000427ea4 in main (argc=5, argv=0x7fffa1cb2868) at ../../step/main.cc:59

Reported using DrKonqi