Application: okular (0.17.5)
KDE Platform Version: 4.11.5 (Compiled from sources)
Qt Version: 4.8.5
Operating System: Linux 3.12.7-300.fc20.x86_64 x86_64
Distribution: "Fedora release 20 (Heisenbug)"

-- Information about the crash:
- What I was doing when the application crashed: I opened a pdf just downloaded from net and was trying to scroll down.

- Unusual behavior I noticed: The scrolling seemed to be pretty slow and the text and images appeared quite hazy, and then the whole application crashed within a few seconds.

-- Backtrace:
Application: Okular (okular), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[KCrash Handler]
#6  0x0000003dd4cea1a4 in FormWidgetText::isPassword (this=0x22d8e60) at Form.cc:266
#7  0x00007f13ed726699 in FormLineEdit::FormLineEdit (this=0x85edeb0, text=0x2330f60, parent=<optimized out>) at /usr/src/debug/okular-4.11.5/ui/formwidgets.cpp:392
#8  0x00007f13ed729c9a in FormWidgetFactory::createWidget (ff=ff@entry=0x2330f60, parent=0x20d5200) at /usr/src/debug/okular-4.11.5/ui/formwidgets.cpp:216
#9  0x00007f13ed75589f in PageView::notifySetup (this=0x20d7b10, pageSet=..., setupFlags=<optimized out>) at /usr/src/debug/okular-4.11.5/ui/pageview.cpp:883
#10 0x00007f13ed3e1d13 in Okular::Document::resetSearch (this=0x1fb0280, searchID=<optimized out>) at /usr/src/debug/okular-4.11.5/core/document.cpp:3420
#11 0x00007f13ed77334b in SearchLineEdit::resetSearch (this=0x20d8700) at /usr/src/debug/okular-4.11.5/ui/searchlineedit.cpp:102
#12 0x00007f13ed6f758f in Okular::Part::notifySetup (this=0x1ef36b0, setupFlags=257) at /usr/src/debug/okular-4.11.5/part.cpp:1071
#13 0x00007f13ed3f3392 in Okular::Document::closeDocument (this=0x1fb0280) at /usr/src/debug/okular-4.11.5/core/document.cpp:2386
#14 0x00007f13ed6f3c67 in Okular::Part::closeUrl (this=0x1ef36b0, promptToSave=<optimized out>) at /usr/src/debug/okular-4.11.5/part.cpp:1467
#15 0x000000000040bdbc in Shell::~Shell (this=0x1f11880, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /usr/src/debug/okular-4.11.5/shell/shell.cpp:156
#16 0x000000000040be69 in Shell::~Shell (this=0x1f11880, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /usr/src/debug/okular-4.11.5/shell/shell.cpp:161
#17 0x000000326539d568 in QObject::event (this=this@entry=0x1f11880, e=e@entry=0x2ca99a0) at kernel/qobject.cpp:1175
#18 0x000000326841cdeb in QWidget::event (this=this@entry=0x1f11880, event=event@entry=0x2ca99a0) at kernel/qwidget.cpp:8846
#19 0x00000032687edbc3 in QMainWindow::event (this=this@entry=0x1f11880, event=event@entry=0x2ca99a0) at widgets/qmainwindow.cpp:1478
#20 0x00000030c7f093f1 in KMainWindow::event (this=this@entry=0x1f11880, ev=ev@entry=0x2ca99a0) at /usr/src/debug/kdelibs-4.11.5/kdeui/widgets/kmainwindow.cpp:1084
#21 0x00000030c7f44aa9 in KXmlGuiWindow::event (this=0x1f11880, ev=0x2ca99a0) at /usr/src/debug/kdelibs-4.11.5/kdeui/xmlgui/kxmlguiwindow.cpp:126
#22 0x00000032683c9dfc in QApplicationPrivate::notify_helper (this=0x1d75cc0, receiver=0x1f11880, e=0x2ca99a0) at kernel/qapplication.cpp:4562
#23 0x00000032683d0795 in QApplication::notify (this=this@entry=0x7fffc04c1f50, receiver=receiver@entry=0x1f11880, e=e@entry=0x2ca99a0) at kernel/qapplication.cpp:4348
#24 0x00000030c7e4a7da in KApplication::notify (this=0x7fffc04c1f50, receiver=0x1f11880, event=0x2ca99a0) at /usr/src/debug/kdelibs-4.11.5/kdeui/kernel/kapplication.cpp:311
#25 0x00000032653845ed in QCoreApplication::notifyInternal (this=0x7fffc04c1f50, receiver=receiver@entry=0x1f11880, event=event@entry=0x2ca99a0) at kernel/qcoreapplication.cpp:949
#26 0x00000032653876e7 in sendEvent (event=0x2ca99a0, receiver=0x1f11880) at kernel/qcoreapplication.h:231
#27 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1d47520) at kernel/qcoreapplication.cpp:1573
#28 0x0000003265387b93 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1466
#29 0x00000032653b3903 in sendPostedEvents () at kernel/qcoreapplication.h:236
#30 postEventSourceDispatch (s=s@entry=0x1d64920) at kernel/qeventdispatcher_glib.cpp:280
#31 0x000000325ce492a6 in g_main_dispatch (context=0x1d75f80) at gmain.c:3066
#32 g_main_context_dispatch (context=context@entry=0x1d75f80) at gmain.c:3642
#33 0x000000325ce49628 in g_main_context_iterate (context=context@entry=0x1d75f80, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3713
#34 0x000000325ce496dc in g_main_context_iteration (context=0x1d75f80, may_block=1) at gmain.c:3774
#35 0x00000032653b3185 in QEventDispatcherGlib::processEvents (this=0x1d48e80, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#36 0x000000326846bdb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#37 0x000000326538312f in QEventLoop::processEvents (this=this@entry=0x7fffc04c1d80, flags=...) at kernel/qeventloop.cpp:149
#38 0x000000326538347d in QEventLoop::exec (this=this@entry=0x7fffc04c1d80, flags=...) at kernel/qeventloop.cpp:204
#39 0x00000032653889bb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1221
#40 0x00000032683c846c in QApplication::exec () at kernel/qapplication.cpp:3823
#41 0x00000000004083fe in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/okular-4.11.5/shell/main.cpp:100

Reported using DrKonqi