[okular] [Bug 426502] New: Okular occasionally crashes when opening PDF files

[Bernhard Rosenkränzer]

https://bugs.kde.org/show_bug.cgi?id=426502

            Bug ID: 426502
           Summary: Okular occasionally crashes when opening PDF files
           Product: okular
           Version: 1.11.1
          Platform: Mandriva RPMs
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: bero at lindev.ch
  Target Milestone: ---

Application: okular (1.11.1)

Qt Version: 5.15.1
Frameworks Version: 5.74.0
Operating System: Linux 5.8.6-desktop-4omv4002 x86_64
Windowing system: X11
Distribution: "OpenMandriva Lx 4.2"

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

Clicked on a link to a PDF file in Falkon with Okular set as default PDF
handler. Tried 3 times, Okular crashed 2 out of 3 times, succeeded once. Opened
Okular manually and opened the file with File/Open, tried 3 times, got 2
successful opens and 1 crash.

This might be related to bug 425188 (similar but not 100% same symptom), but
might also be a separate issue (rather different backtrace, but it might be the
same underlying issue causing different crashes on rather different
systems/versions).

Okular from release service 20.08.1, Plasma 5.19.5, Frameworks 5.74.0 with KIO
5.74.1, Qt 5.15.1

The crash can be reproduced sometimes.

-- Backtrace:
Application: Okular (okular), signal: Segmentation fault

[KCrash Handler]
#4  0x00007fc2e71cbe23 in QTimer::stop() () from /usr/lib64/libQt5Core.so.5
#5  0x00007fc2cc4646d8 in PageView::slotRelayoutPages() () from
/usr/lib64/qt5/plugins/okularpart.so
#6  0x00007fc2cc3c5d20 in PageView::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) () from /usr/lib64/qt5/plugins/okularpart.so
#7  0x00007fc2e71b455e in QMetaCallEvent::placeMetaCall(QObject*) () from
/usr/lib64/libQt5Core.so.5
#8  0x00007fc2e71b6212 in QObject::event(QEvent*) () from
/usr/lib64/libQt5Core.so.5
#9  0x00007fc2e7ce391e in QWidget::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#10 0x00007fc2e7d97795 in QAbstractScrollArea::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#11 0x00007fc2cc476e0d in PageView::event(QEvent*) () from
/usr/lib64/qt5/plugins/okularpart.so
#12 0x00007fc2e7ca1bde in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#13 0x00007fc2e7ca3489 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#14 0x00007fc2e7180d3c in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#15 0x00007fc2e718259e in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#16 0x00007fc2e71f0ee2 in postEventSourceDispatch(_GSource*, int (*)(void*),
void*) () from /usr/lib64/libQt5Core.so.5
#17 0x00007fc2e5511173 in g_main_context_dispatch () from
/usr/lib64/libglib-2.0.so.0
#18 0x00007fc2e5511c13 in g_main_context_iterate () from
/usr/lib64/libglib-2.0.so.0
#19 0x00007fc2e5511f0d in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#20 0x00007fc2e71f0270 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQt5Core.so.5
#21 0x00007fc2cf2f3ca6 in
QXcbGlibEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib64/libQt5XcbQpa.so.5
#22 0x00007fc2e717c096 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQt5Core.so.5
#23 0x00007fc2e71814c1 in QCoreApplication::exec() () from
/usr/lib64/libQt5Core.so.5
#24 0x00007fc2e7543716 in QGuiApplication::exec() () from
/usr/lib64/libQt5Gui.so.5
#25 0x00007fc2e7ca3113 in QApplication::exec() () from
/usr/lib64/libQt5Widgets.so.5
#26 0x00000000002133fa in main ()
[Inferior 1 (process 477242) detached]

The reporter indicates this bug may be a duplicate of or related to bug 425188.

Possible duplicates by query: bug 426297, bug 416280, bug 379809, bug 378696,
bug 378135.

Reported using DrKonqi

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