Bug 384618

Application: umbrello5 (2.23.0)

Qt Version: 5.9.1
Frameworks Version: 5.37.0
Operating System: Linux 4.10.0-33-generic x86_64
Distribution: KDE neon User Edition 5.10

-- Information about the crash:
- What I was doing when the application crashed:
Drawing a state chart (another time I drew a class diagram). Nothing special

The crash can be reproduced sometimes.

-- Backtrace:
Application: Umbrello UML Modeller (umbrello5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7eff720a2900 (LWP 9436))]

Thread 2 (Thread 0x7eff6748a700 (LWP 9438)):
#0  0x00007eff85cd270d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007eff7e7c738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff7e7c749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff8690394b in QEventDispatcherGlib::processEvents (this=0x7eff600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007eff868ac7ca in QEventLoop::exec (this=this@entry=0x7eff67489c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007eff866d5cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007eff81341b75 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007eff866da989 in QThreadPrivate::start (arg=0x7eff813b7da0) at thread/qthread_unix.cpp:368
#8  0x00007eff808356ba in start_thread (arg=0x7eff6748a700) at pthread_create.c:333
#9  0x00007eff85cde3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7eff720a2900 (LWP 9436)):
[KCrash Handler]
#6  0x00007eff877c3eec in QGraphicsSceneFindItemBspTreeVisitor::visit (this=0x334e6a0, items=0x337c988) at graphicsview/qgraphicsscene_bsp.cpp:77
#7  0x00007eff877c2f26 in QGraphicsSceneBspTree::climbTree (this=0x33fdf28, visitor=0x334e6a0, rect=..., index=<optimized out>) at graphicsview/qgraphicsscene_bsp.cpp:259
#8  0x00007eff877c2f26 in QGraphicsSceneBspTree::climbTree (this=0x33fdf28, visitor=0x334e6a0, rect=..., index=<optimized out>) at graphicsview/qgraphicsscene_bsp.cpp:259
#9  0x00007eff877c2f7a in QGraphicsSceneBspTree::climbTree (this=0x33fdf28, visitor=0x334e6a0, rect=..., index=<optimized out>) at graphicsview/qgraphicsscene_bsp.cpp:250
#10 0x00007eff877c2f26 in QGraphicsSceneBspTree::climbTree (this=0x33fdf28, visitor=0x334e6a0, rect=..., index=<optimized out>) at graphicsview/qgraphicsscene_bsp.cpp:259
#11 0x00007eff877c3003 in QGraphicsSceneBspTree::items (this=this@entry=0x33fdf28, rect=..., onlyTopLevelItems=onlyTopLevelItems@entry=true) at graphicsview/qgraphicsscene_bsp.cpp:152
#12 0x00007eff877c608c in QGraphicsSceneBspTreeIndexPrivate::estimateItems (this=0x33fdeb0, rect=..., order=Qt::AscendingOrder, onlyTopLevelItems=onlyTopLevelItems@entry=true) at graphicsview/qgraphicsscenebsptreeindex.cpp:389
#13 0x00007eff877c6367 in QGraphicsSceneBspTreeIndex::estimateTopLevelItems (this=<optimized out>, rect=..., order=<optimized out>) at graphicsview/qgraphicsscenebsptreeindex.cpp:543
#14 0x00007eff877b9195 in QGraphicsScenePrivate::drawItems (this=0x3311450, painter=painter@entry=0x7ffd2dd72a50, viewTransform=0x7ffd2dd72ab0, exposedRegion=exposedRegion@entry=0x33e6710, widget=0x32de610) at graphicsview/qgraphicsscene.cpp:4712
#15 0x00007eff877dab7a in QGraphicsView::paintEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsview.cpp:3530
#16 0x00007eff874e86d8 in QWidget::event (this=this@entry=0x33957f0, event=event@entry=0x7ffd2dd72fd0) at kernel/qwidget.cpp:9178
#17 0x00007eff875cb8fe in QFrame::event (this=0x33957f0, e=0x7ffd2dd72fd0) at widgets/qframe.cpp:550
#18 0x00007eff877d965b in QGraphicsView::viewportEvent (this=0x33957f0, event=0x7ffd2dd72fd0) at graphicsview/qgraphicsview.cpp:2968
#19 0x00007eff868ae502 in QCoreApplicationPrivate::sendThroughObjectEventFilters (receiver=receiver@entry=0x32de610, event=event@entry=0x7ffd2dd72fd0) at kernel/qcoreapplication.cpp:1129
#20 0x00007eff874a73d5 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x32de610, e=0x7ffd2dd72fd0) at kernel/qapplication.cpp:3713
#21 0x00007eff874aee07 in QApplication::notify (this=0x7ffd2dd74d70, receiver=0x32de610, e=0x7ffd2dd72fd0) at kernel/qapplication.cpp:3476
#22 0x00007eff868ae798 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x32de610, event=event@entry=0x7ffd2dd72fd0) at kernel/qcoreapplication.cpp:1018
#23 0x00007eff874e16ca in QCoreApplication::sendSpontaneousEvent (event=0x7ffd2dd72fd0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#24 QWidgetPrivate::sendPaintEvent (this=this@entry=0x32dee10, toBePainted=...) at kernel/qwidget.cpp:5707
#25 0x00007eff874e1d11 in QWidgetPrivate::drawWidget (this=this@entry=0x32dee10, pdev=pdev@entry=0x32bbb50, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5647
#26 0x00007eff874e2a0c in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x33e6240, pdev=pdev@entry=0x32bbb50, siblings=..., index=<optimized out>, index@entry=0, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5842
#27 0x00007eff874e28f9 in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x33e6240, pdev=pdev@entry=0x32bbb50, siblings=..., index=0, index@entry=1, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5829
#28 0x00007eff874e28f9 in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x33e6240, pdev=pdev@entry=0x32bbb50, siblings=..., index=1, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5829
#29 0x00007eff874e1881 in QWidgetPrivate::drawWidget (this=this@entry=0x33e6240, pdev=pdev@entry=0x32bbb50, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5699
#30 0x00007eff874e2a0c in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x2abeca0, pdev=pdev@entry=0x32bbb50, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5842
#31 0x00007eff874e1881 in QWidgetPrivate::drawWidget (this=this@entry=0x2abeca0, pdev=pdev@entry=0x32bbb50, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5699
#32 0x00007eff874e2a0c in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x2abea50, pdev=pdev@entry=0x32bbb50, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5842
#33 0x00007eff874e1881 in QWidgetPrivate::drawWidget (this=this@entry=0x2abea50, pdev=pdev@entry=0x32bbb50, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5699
#34 0x00007eff874e2a0c in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x2c62920, pdev=pdev@entry=0x32bbb50, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5842
#35 0x00007eff874e1881 in QWidgetPrivate::drawWidget (this=this@entry=0x2c62920, pdev=pdev@entry=0x32bbb50, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5699
#36 0x00007eff874e2a0c in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x2a16700, pdev=pdev@entry=0x32bbb50, siblings=..., index=<optimized out>, index@entry=44, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5842
#37 0x00007eff874e28f9 in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x2a16700, pdev=pdev@entry=0x32bbb50, siblings=..., index=44, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5829
#38 0x00007eff874e1881 in QWidgetPrivate::drawWidget (this=0x2a16700, pdev=0x32bbb50, rgn=..., offset=..., flags=flags@entry=5, sharedPainter=sharedPainter@entry=0x0, backingStore=0x2bf5020) at kernel/qwidget.cpp:5699
#39 0x00007eff874b7320 in QWidgetBackingStore::doSync (this=this@entry=0x2bf5020) at kernel/qwidgetbackingstore.cpp:1377
#40 0x00007eff874b74f8 in QWidgetBackingStore::sync (this=0x2bf5020) at kernel/qwidgetbackingstore.cpp:1158
#41 0x00007eff874d0b1f in QWidgetPrivate::syncBackingStore (this=0x2a16700) at kernel/qwidget.cpp:1969
#42 0x00007eff874e88e8 in QWidget::event (this=this@entry=0x2a16300, event=event@entry=0x3431f10) at kernel/qwidget.cpp:9117
#43 0x00007eff875da1cb in QMainWindow::event (this=0x2a16300, event=0x3431f10) at widgets/qmainwindow.cpp:1557
#44 0x00007eff89587a67 in KMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#45 0x00007eff895cc435 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#46 0x00007eff874a73fc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x2a16300, e=0x3431f10) at kernel/qapplication.cpp:3717
#47 0x00007eff874aee07 in QApplication::notify (this=0x7ffd2dd74d70, receiver=0x2a16300, e=0x3431f10) at kernel/qapplication.cpp:3476
#48 0x00007eff868ae798 in QCoreApplication::notifyInternal2 (receiver=0x2a16300, event=event@entry=0x3431f10) at kernel/qcoreapplication.cpp:1018
#49 0x00007eff868b0f7b in QCoreApplication::sendEvent (event=0x3431f10, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#50 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x29a3090) at kernel/qcoreapplication.cpp:1678
#51 0x00007eff868b13e8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1532
#52 0x00007eff86904323 in postEventSourceDispatch (s=0x29ef4c0) at kernel/qeventdispatcher_glib.cpp:276
#53 0x00007eff7e7c7197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007eff7e7c73f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007eff7e7c749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#56 0x00007eff8690392f in QEventDispatcherGlib::processEvents (this=0x29f7400, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#57 0x00007eff868ac7ca in QEventLoop::exec (this=this@entry=0x7ffd2dd74c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#58 0x00007eff868b5704 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#59 0x00000000004627c0 in ?? ()
#60 0x00007eff85bf7830 in __libc_start_main (main=0x461bd0, argc=3, argv=0x7ffd2dd74ec8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd2dd74eb8) at ../csu/libc-start.c:291
#61 0x000000000047a8e9 in _start ()

Reported using DrKonqi