Bug 357430

Application: okular (0.22.2)
KDE Platform Version: 4.14.14
Qt Version: 4.8.7
Operating System: Linux 4.2.8-300.fc23.x86_64 x86_64
Distribution (Platform): Fedora RPMs

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

I edit a LaTeX document that is compiled automatically in the background with `latexmk -pdf -pvc` which uses inotify and runs `pdflatex`. So the document has been reloaded a lot of times.

To see some part of an equation more clearly I zoomed in on it by holding the mouse wheel and moving the mouse. Then I took a raster image using the right mouse button. Holding that button I selected some area and stored that as PNG image. A while later I wanted to continue editing and right-clicked into the document. In the context menu I selected “fit width”. Okular instantly crashed as I selected that menu item.

Unfortunately I do not remember exactly whether it was compiling in the background. Then perhaps this action is overlaid with the reloading and then some race condition occured.

So I would assume that the resizing crashed it. I have tried to zoom in into other documents and selecting “fit width” again without a problem. This problem has not occured before at all.

My system is Fedora 23 with RPM Fusion. I use plain Awesome WM without any desktop environment.

The crash does not seem to be reproducible.

-- Backtrace:
Application: Okular (okular), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3f4a9fd900 (LWP 4937))]

Thread 2 (Thread 0x7f3f2907b700 (LWP 11454)):
#0  0x00007f3f469a5ffd in poll () at /lib64/libc.so.6
#1  0x00007f3f424bd16c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f3f424bd27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f3f47b7aeae in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#4  0x00007f3f47b49151 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#5  0x00007f3f47b494c5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#6  0x00007f3f47a38a89 in QThread::exec() () at /lib64/libQtCore.so.4
#7  0x00007f3f47b29223 in QInotifyFileSystemWatcherEngine::run() () at /lib64/libQtCore.so.4
#8  0x00007f3f47a3b37c in QThreadPrivate::start(void*) () at /lib64/libQtCore.so.4
#9  0x00007f3f4779960a in start_thread () at /lib64/libpthread.so.0
#10 0x00007f3f469b1a9d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f3f4a9fd900 (LWP 4937)):
[KCrash Handler]
#6  0x00007f3f2e96b903 in Okular::Page::number() const () at /lib64/libokularcore.so.6
#7  0x00007f3f2ec2f5e7 in Okular::Part::slotShowMenu(Okular::Page const*, QPoint const&) () at /usr/lib64/kde4/okularpart.so
#8  0x00007f3f2ec3bff8 in Okular::Part::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.87] () at /usr/lib64/kde4/okularpart.so
#9  0x00007f3f47b5ea80 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /lib64/libQtCore.so.4
#10 0x00007f3f2ec9dee9 in PageView::mouseReleaseEvent(QMouseEvent*) () at /usr/lib64/kde4/okularpart.so
#11 0x00007f3f48861140 in QWidget::event(QEvent*) () at /lib64/libQtGui.so.4
#12 0x00007f3f48c2670e in QFrame::event(QEvent*) () at /lib64/libQtGui.so.4
#13 0x00007f3f2eca0dc6 in PageView::viewportEvent(QEvent*) () at /usr/lib64/kde4/okularpart.so
#14 0x00007f3f47b4aa46 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /lib64/libQtCore.so.4
#15 0x00007f3f4880a91c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#16 0x00007f3f48811956 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#17 0x00007f3f4959654a in KApplication::notify(QObject*, QEvent*) () at /lib64/libkdeui.so.5
#18 0x00007f3f47b4a8dd in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQtCore.so.4
#19 0x00007f3f48810f5d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /lib64/libQtGui.so.4
#20 0x00007f3f4888b862 in QETWidget::translateMouseEvent(_XEvent const*) () at /lib64/libQtGui.so.4
#21 0x00007f3f4888a22d in QApplication::x11ProcessEvent(_XEvent*) () at /lib64/libQtGui.so.4
#22 0x00007f3f488b3249 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQtGui.so.4
#23 0x00007f3f424bce3a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#24 0x00007f3f424bd1d0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#25 0x00007f3f424bd27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#26 0x00007f3f47b7ae8e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#27 0x00007f3f488b33e6 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtGui.so.4
#28 0x00007f3f47b49151 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#29 0x00007f3f47b494c5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#30 0x00007f3f47b4f069 in QCoreApplication::exec() () at /lib64/libQtCore.so.4
#31 0x0000561e075082eb in main ()

Reported using DrKonqi