https://bugs.kde.org/show_bug.cgi?id=467691
Bug ID: 467691
Summary: Segfault in libqt causes Konsole to crash based on
scaling
Classification: Applications
Product: konsole
Version: 22.12.2
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: font
Assignee: konsole-de...@kde.org
Reporter: schwarzl.mart...@gmail.com
Target Milestone: ---
SUMMARY
Scaling up the Konsole w/ ctrl++ and the global KDE scaling settings (display
configuration) causes a segfault in libqt when starting Konsole.
Not sure yet if the bug could be exploitable.
Stacktrace:
#0 0x00007f5faf781a90 in ?? () from /usr/lib/libQt5Gui.so.5
#1 0x00007f5fafa1f67c in QRasterPaintEngine::fillRect(QRectF const&,
QSpanData*) () from /usr/lib/libQt5Gui.so.5
#2 0x00007f5fafa377f8 in QPainter::fillRect(QRect const&, QColor const&) ()
from /usr/lib/libQt5Gui.so.5
#3 0x00007f5fad209923 in
QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) () from
/usr/lib/libQt5WaylandClient.so.5
#4 0x00007f5faf95032e in QBackingStore::beginPaint(QRegion const&) () from
/usr/lib/libQt5Gui.so.5
#5 0x00007f5fafe6b758 in ?? () from /usr/lib/libQt5Widgets.so.5
#6 0x00007f5fafe822d0 in QWidgetPrivate::syncBackingStore(QRegion const&) ()
from /usr/lib/libQt5Widgets.so.5
#7 0x00007f5fafeb71cb in ?? () from /usr/lib/libQt5Widgets.so.5
#8 0x00007f5fafe5fb5c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/libQt5Widgets.so.5
#9 0x00007f5faf329f48 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/libQt5Core.so.5
#10 0x00007f5faf7bb804 in
QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*)
() from /usr/lib/libQt5Gui.so.5
#11 0x00007f5faf79a885 in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/libQt5Gui.so.5
#12 0x00007f5fad24aa75 in ?? () from /usr/lib/libQt5WaylandClient.so.5
#13 0x00007f5fad49d82b in g_main_context_dispatch () from
/usr/lib/libglib-2.0.so.0
#14 0x00007f5fad4f4cc9 in ?? () from /usr/lib/libglib-2.0.so.0
#15 0x00007f5fad49c0e2 in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#16 0x00007f5faf374c6c in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQt5Core.so.5
#17 0x00007f5faf3226ec in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQt5Core.so.5
#18 0x00007f5faf32d219 in QCoreApplication::exec() () from
/usr/lib/libQt5Core.so.5
#19 0x000055d9f8623b65 in ?? ()
#20 0x00007f5faec9e790 in __libc_start_call_main
(main=main@entry=0x55d9f8622020, argc=argc@entry=0x1,
argv=argv@entry=0x7ffd00463398) at ../sysdeps/nptl/libc_start_call_main.h:58
STEPS TO REPRODUCE
1. Increase font size to 16pt HACK.
2. Scale up to maximum with ctrl++ in Konsole.
3. Additionally in the Display Configuration of KDE Scale up to 150-175%
OBSERVED RESULT
Konsole crashes ion startup due the scaling issue in libqt.
EXPECTED RESULT
Konsole should start.
SOFTWARE/OS VERSIONS
Linux: 5.15.102-1-MANJARO
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
ADDITIONAL INFORMATION
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