Application: dolphin (15.12.3)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-119-generic x86_64
Distribution: Ubuntu 16.04.4 LTS

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

I had a  a few hundred PDFs from a scanner and I was moving subsets from a folder to individual folders that I had just created.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f156f4528c0 (LWP 17993))]

Thread 3 (Thread 0x7f1562b6f700 (LWP 17997)):
#0  0x00007f157ce4793a in QBasicAtomicOps<8>::testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x1af7ea8: 0x1) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  QGenericAtomicOps<QBasicAtomicOps<8> >::testAndSetAcquire<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=<optimized out>, expectedValue=0x0, _q_value=@0x1af7ea8: 0x1) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:166
#2  QBasicAtomicPointer<QMutexData>::testAndSetAcquire (currentValue=<synthetic pointer>, newValue=<optimized out>, expectedValue=0x0, this=0x1af7ea8, this@entry=0x1) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:276
#3  QBasicMutex::fastTryLock (current=<synthetic pointer>, this=0x1af7ea8, this@entry=0x1) at thread/qmutex.h:82
#4  QMutex::lock (this=this@entry=0x1af7ea8) at thread/qmutex.cpp:212
#5  0x00007f157d085d6f in QMutexLocker::QMutexLocker (m=0x1af7ea8, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#6  QThreadData::canWaitLocked (this=0x1af7e80) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:240
#7  postEventSourcePrepare (s=0x7f155c0012d0, timeout=0x7f1562b6eb44) at kernel/qeventdispatcher_glib.cpp:254
#8  0x00007f1578a7091d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f1578a712bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f1578a7149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f157d0867eb in QEventDispatcherGlib::processEvents (this=0x7f155c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#12 0x00007f157d02db4a in QEventLoop::exec (this=this@entry=0x7f1562b6ed00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#13 0x00007f157ce4a834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#14 0x00007f157ce4f7be in QThreadPrivate::start (arg=0x1af7db0) at thread/qthread_unix.cpp:331
#15 0x00007f15795fd6ba in start_thread (arg=0x7f1562b6f700) at pthread_create.c:333
#16 0x00007f158228a41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f156cd47700 (LWP 17996)):
#0  0x00007f158227e74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1576a06c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f1576a088d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f156f099889 in QXcbEventReader::run (this=0x15539d0) at qxcbconnection.cpp:1271
#4  0x00007f157ce4f7be in QThreadPrivate::start (arg=0x15539d0) at thread/qthread_unix.cpp:331
#5  0x00007f15795fd6ba in start_thread (arg=0x7f156cd47700) at pthread_create.c:333
#6  0x00007f158228a41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f156f4528c0 (LWP 17993)):
[KCrash Handler]
#6  QScopedPointer<QGraphicsItemPrivate, QScopedPointerDeleter<QGraphicsItemPrivate> >::operator-> (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:113
#7  QGraphicsSceneFindItemBspTreeVisitor::visit (this=0x1d31bf0, items=0x2b6e210) at graphicsview/qgraphicsscene_bsp.cpp:71
#8  0x00007f157de6f7e6 in QGraphicsSceneBspTree::climbTree (this=0x1d31ae8, visitor=0x1d31bf0, rect=..., index=<optimized out>) at graphicsview/qgraphicsscene_bsp.cpp:253
#9  0x00007f157de6f83a in QGraphicsSceneBspTree::climbTree (this=0x1d31ae8, visitor=0x1d31bf0, rect=..., index=<optimized out>) at graphicsview/qgraphicsscene_bsp.cpp:244
#10 0x00007f157de6f7e6 in QGraphicsSceneBspTree::climbTree (this=0x1d31ae8, visitor=0x1d31bf0, rect=..., index=<optimized out>) at graphicsview/qgraphicsscene_bsp.cpp:253
#11 0x00007f157de6f8c3 in QGraphicsSceneBspTree::items (this=this@entry=0x1d31ae8, rect=..., onlyTopLevelItems=onlyTopLevelItems@entry=true) at graphicsview/qgraphicsscene_bsp.cpp:146
#12 0x00007f157de72ebc in QGraphicsSceneBspTreeIndexPrivate::estimateItems (this=0x1d31a70, rect=..., order=Qt::AscendingOrder, onlyTopLevelItems=onlyTopLevelItems@entry=true) at graphicsview/qgraphicsscenebsptreeindex.cpp:381
#13 0x00007f157de73197 in QGraphicsSceneBspTreeIndex::estimateTopLevelItems (this=<optimized out>, rect=..., order=<optimized out>) at graphicsview/qgraphicsscenebsptreeindex.cpp:535
#14 0x00007f157de64f45 in QGraphicsScenePrivate::drawItems (this=0x1d31770, painter=painter@entry=0x7ffe92afb380, viewTransform=viewTransform@entry=0x0, exposedRegion=exposedRegion@entry=0x1d32250, widget=0x1d35e70) at graphicsview/qgraphicsscene.cpp:4688
#15 0x00007f157de86427 in QGraphicsView::paintEvent (this=0x1d31730, event=<optimized out>) at graphicsview/qgraphicsview.cpp:3539
#16 0x00007f157db75fc8 in QWidget::event (this=this@entry=0x1d31730, event=event@entry=0x7ffe92afb910) at kernel/qwidget.cpp:9044
#17 0x00007f157dc74b8e in QFrame::event (this=0x1d31730, e=0x7ffe92afb910) at widgets/qframe.cpp:540
#18 0x00007f157de84fb3 in QGraphicsView::viewportEvent (this=0x1d31730, event=0x7ffe92afb910) at graphicsview/qgraphicsview.cpp:2962
#19 0x00007f157d030172 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x153b3e0, receiver=receiver@entry=0x1d35e70, event=event@entry=0x7ffe92afb910) at kernel/qcoreapplication.cpp:1072
#20 0x00007f157db3303c in QApplicationPrivate::notify_helper (this=this@entry=0x153b3e0, receiver=receiver@entry=0x1d35e70, e=e@entry=0x7ffe92afb910) at kernel/qapplication.cpp:3712
#21 0x00007f157db38516 in QApplication::notify (this=0x7ffe92afca40, receiver=0x1d35e70, e=0x7ffe92afb910) at kernel/qapplication.cpp:3499
#22 0x00007f157d03038b in QCoreApplication::notifyInternal (this=0x7ffe92afca40, receiver=receiver@entry=0x1d35e70, event=event@entry=0x7ffe92afb910) at kernel/qcoreapplication.cpp:965
#23 0x00007f157db6eab9 in QCoreApplication::sendSpontaneousEvent (event=0x7ffe92afb910, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#24 QWidgetPrivate::sendPaintEvent (this=this@entry=0x1d35f20, toBePainted=...) at kernel/qwidget.cpp:5625
#25 0x00007f157db6f101 in QWidgetPrivate::drawWidget (this=this@entry=0x1d35f20, pdev=0x1eede90, rgn=..., offset=..., flags=36, sharedPainter=sharedPainter@entry=0x0, backingStore=0x19d7f10) at kernel/qwidget.cpp:5565
#26 0x00007f157db40856 in QWidgetBackingStore::doSync (this=this@entry=0x19d7f10) at kernel/qwidgetbackingstore.cpp:1220
#27 0x00007f157db40a8c in QWidgetBackingStore::sync (this=0x19d7f10) at kernel/qwidgetbackingstore.cpp:1032
#28 0x00007f157db5ec5f in QWidgetPrivate::syncBackingStore (this=0x1628ef0) at kernel/qwidget.cpp:1902
#29 0x00007f157db75dc8 in QWidget::event (this=this@entry=0x15f29d0, event=event@entry=0x2a905f0) at kernel/qwidget.cpp:8983
#30 0x00007f157dc8bdbb in QMainWindow::event (this=0x15f29d0, event=0x2a905f0) at widgets/qmainwindow.cpp:1495
#31 0x00007f157fb82147 in KMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#32 0x00007f157fbba4e5 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#33 0x00007f157db3305c in QApplicationPrivate::notify_helper (this=this@entry=0x153b3e0, receiver=receiver@entry=0x15f29d0, e=e@entry=0x2a905f0) at kernel/qapplication.cpp:3716
#34 0x00007f157db38516 in QApplication::notify (this=0x7ffe92afca40, receiver=0x15f29d0, e=0x2a905f0) at kernel/qapplication.cpp:3499
#35 0x00007f157d03038b in QCoreApplication::notifyInternal (this=0x7ffe92afca40, receiver=0x15f29d0, event=event@entry=0x2a905f0) at kernel/qcoreapplication.cpp:965
#36 0x00007f157d032786 in QCoreApplication::sendEvent (event=0x2a905f0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#37 QCoreApplicationPrivate::sendPostedEvents (receiver=0x15f29d0, event_type=event_type@entry=77, data=0x1539870) at kernel/qcoreapplication.cpp:1593
#38 0x00007f157d032c68 in QCoreApplication::sendPostedEvents (receiver=<optimized out>, event_type=event_type@entry=77) at kernel/qcoreapplication.cpp:1451
#39 0x00007f157de560ba in QGraphicsViewPrivate::dispatchPendingUpdateRequests (this=<optimized out>) at ../../include/QtWidgets/5.5.1/QtWidgets/private/../../../../../src/widgets/graphicsview/qgraphicsview_p.h:195
#40 QGraphicsScenePrivate::_q_processDirtyItems (this=0x1d31770) at graphicsview/qgraphicsscene.cpp:501
#41 0x00007f157de5be49 in QGraphicsScene::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qgraphicsscene.cpp:182
#42 0x00007f157d05fc01 in QObject::event (this=this@entry=0x1d316a0, e=e@entry=0x2b8f560) at kernel/qobject.cpp:1239
#43 0x00007f157de6a49b in QGraphicsScene::event (this=0x1d316a0, event=0x2b8f560) at graphicsview/qgraphicsscene.cpp:3501
#44 0x00007f157db3305c in QApplicationPrivate::notify_helper (this=this@entry=0x153b3e0, receiver=receiver@entry=0x1d316a0, e=e@entry=0x2b8f560) at kernel/qapplication.cpp:3716
#45 0x00007f157db38516 in QApplication::notify (this=0x7ffe92afca40, receiver=0x1d316a0, e=0x2b8f560) at kernel/qapplication.cpp:3499
#46 0x00007f157d03038b in QCoreApplication::notifyInternal (this=0x7ffe92afca40, receiver=0x1d316a0, event=event@entry=0x2b8f560) at kernel/qcoreapplication.cpp:965
#47 0x00007f157d032786 in QCoreApplication::sendEvent (event=0x2b8f560, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#48 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1539870) at kernel/qcoreapplication.cpp:1593
#49 0x00007f157d032c68 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#50 0x00007f157d0863c3 in postEventSourceDispatch (s=0x15899f0) at kernel/qeventdispatcher_glib.cpp:271
#51 0x00007f1578a71197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f1578a713f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007f1578a7149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007f157d0867cf in QEventDispatcherGlib::processEvents (this=0x1572f40, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#55 0x00007f157d02db4a in QEventLoop::exec (this=this@entry=0x7ffe92afc910, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#56 0x00007f157d035bec in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#57 0x00007f15825aae2b in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#58 0x00007f15821a3830 in __libc_start_main (main=0x400710 <main>, argc=1, argv=0x7ffe92afcbc8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe92afcbb8) at ../csu/libc-start.c:291
#59 0x0000000000400749 in _start ()

Reported using DrKonqi