Application: okular (0.13.3)
KDE Platform Version: 4.7.4 (4.7.4)
Qt Version: 4.8.0
Operating System: Linux 3.1.5-6.fc16.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
I was trying to access annotation from Reviews sidebar by clicking annotation author name.

Steps to Reproduce:
1. Open pdf in Okular
2. Press F6 to get review tools
3. Add any review marking. Eg. Note.
4. Select reviews from sidebar
5. Click annotation author name in the annotations list sidebar
6. Okular crashes

The crash can be reproduced every time.

-- Backtrace:
Application: Okular (okular), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[KCrash Handler]
#6  row (this=0x0) at /usr/src/debug/okular-4.7.4/ui/annotationproxymodels.cpp:312
#7  AuthorGroupProxyModel::parent (this=0xf8c0a0, index=...) at /usr/src/debug/okular-4.7.4/ui/annotationproxymodels.cpp:403
#8  0x00007f0d8c0bc4ff in parent (this=0x7fffe15f2410) at ../../src/corelib/kernel/qabstractitemmodel.h:393
#9  QTreeView::isIndexHidden (this=0xe68bf0, index=...) at itemviews/qtreeview.cpp:2873
#10 0x00007f0d8c0baf21 in QTreeView::visualRect (this=0xe68bf0, index=...) at itemviews/qtreeview.cpp:1045
#11 0x00007f0d8c0756a7 in QAbstractItemViewPrivate::sendDelegateEvent (this=0xf56c60, index=..., event=0x7fffe15f3310) at itemviews/qabstractitemview.cpp:4173
#12 0x00007f0d8c07ca0c in QAbstractItemView::edit (this=0xe68bf0, index=..., trigger=QAbstractItemView::NoEditTriggers, event=0x7fffe15f3310) at itemviews/qabstractitemview.cpp:2560
#13 0x00007f0d8c0795ca in QAbstractItemView::mousePressEvent (this=0xe68bf0, event=0x7fffe15f3310) at itemviews/qabstractitemview.cpp:1674
#14 0x00007f0d8bbab319 in QWidget::event (this=0xe68bf0, event=0x7fffe15f3310) at kernel/qwidget.cpp:8357
#15 0x00007f0d8bf62b86 in QFrame::event (this=0xe68bf0, e=0x7fffe15f3310) at widgets/qframe.cpp:557
#16 0x00007f0d8c0748bb in QAbstractItemView::viewportEvent (this=0xe68bf0, event=0x7fffe15f3310) at itemviews/qabstractitemview.cpp:1644
#17 0x00007f0d8c0bc1b5 in QTreeView::viewportEvent (this=0xe68bf0, event=0x7fffe15f3310) at itemviews/qtreeview.cpp:1257
#18 0x00007f0d8af001c8 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0xf573c0, event=0x7fffe15f3310) at kernel/qcoreapplication.cpp:986
#19 0x00007f0d8bb5a95f in notify_helper (e=0x7fffe15f3310, receiver=0xf573c0, this=0xc8d590) at kernel/qapplication.cpp:4546
#20 QApplicationPrivate::notify_helper (this=0xc8d590, receiver=0xf573c0, e=0x7fffe15f3310) at kernel/qapplication.cpp:4522
#21 0x00007f0d8bb600e3 in QApplication::notify (this=<optimized out>, receiver=0xf573c0, e=0x7fffe15f3310) at kernel/qapplication.cpp:4093
#22 0x00007f0d8c899766 in KApplication::notify (this=0x7fffe15f4010, receiver=0xf573c0, event=0x7fffe15f3310) at /usr/src/debug/kdelibs-4.7.4/kdeui/kernel/kapplication.cpp:311
#23 0x00007f0d8af0003c in QCoreApplication::notifyInternal (this=0x7fffe15f4010, receiver=0xf573c0, event=0x7fffe15f3310) at kernel/qcoreapplication.cpp:876
#24 0x00007f0d8bb5b962 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#25 QApplicationPrivate::sendMouseEvent (receiver=0xf573c0, event=0x7fffe15f3310, alienWidget=0xf573c0, nativeWidget=0xe76ab0, buttonDown=0xf573c0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3161
#26 0x00007f0d8bbd72e5 in QETWidget::translateMouseEvent (this=0xe76ab0, event=<optimized out>) at kernel/qapplication_x11.cpp:4521
#27 0x00007f0d8bbd61aa in QApplication::x11ProcessEvent (this=0x7fffe15f4010, event=0x7fffe15f3bd0) at kernel/qapplication_x11.cpp:3641
#28 0x00007f0d8bbfd92c in x11EventSourceDispatch (s=0xc92520, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#29 0x00007f0d85befa7d in g_main_dispatch (context=0xc8de00) at gmain.c:2425
#30 g_main_context_dispatch (context=0xc8de00) at gmain.c:2995
#31 0x00007f0d85bf0278 in g_main_context_iterate (context=0xc8de00, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3073
#32 0x00007f0d85bf044c in g_main_context_iteration (context=0xc8de00, may_block=1) at gmain.c:3136
#33 0x00007f0d8af2ed4f in QEventDispatcherGlib::processEvents (this=0xc69990, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#34 0x00007f0d8bbfd61e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:207
#35 0x00007f0d8aeff172 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#36 0x00007f0d8aeff3c7 in QEventLoop::exec (this=0x7fffe15f3fa0, flags=...) at kernel/qeventloop.cpp:204
#37 0x00007f0d8af03dc5 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#38 0x0000000000407aa6 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/okular-4.7.4/shell/main.cpp:85

Reported using DrKonqi