maintainer-feedback requested: [Bug 252773] x11-toolkits/qt5-gui: Segfault on applications using qt5

[bugzilla-noreply at freebsd.org]

Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-kde (Team)
<kde at FreeBSD.org> for maintainer-feedback:
Bug 252773: x11-toolkits/qt5-gui: Segfault on applications using qt5
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252773



--- Description ---
Hello,

This bug is related to bug #247991.

I have upgraded my system to last 12.2 and last ports with the same result. All
qt5 applications crash with Segmentation fault (DRI2) or Bus error (DRI3+SNA).

I have tried to rebuild qt5 (5.15.0) from sources to have debug symbol,
backtrace is :

(gdb) bt
#0  0x000000080163fa20 in qt_memfillXX_avx2(unsigned char*, long long
__vector(4), long long) () from /root/qt5/lib/libQt5Gui.so.5
#1  0x00000008018bc2d5 in fillRect_normalized(QRect const&, QSpanData*,
QRasterPaintEnginePrivate*) () from /root/qt5/lib/libQt5Gui.so.5
#2  0x00000008018bdcd6 in QRasterPaintEngine::fillRect(QRectF const&,
QSpanData*) () from /root/qt5/lib/libQt5Gui.so.5
#3  0x00000008018e1a9c in QPainter::fillRect(QRect const&, QBrush const&) ()
   from /root/qt5/lib/libQt5Gui.so.5
#4  0x00000008010c04be in fillRegion(QPainter*, QRegion const&, QBrush
const&)
    () from /root/qt5/lib/libQt5Widgets.so.5
#5  0x00000008010c017f in QWidgetPrivate::paintBackground(QPainter*,
QRegion const&, QFlags<QWidgetPrivate::DrawWidgetFlag>) const ()
   from /root/qt5/lib/libQt5Widgets.so.5

Similar issue with qt5 5.14.2. Of course, I have tried to rebuilt qt5 with
different build options without any success. My graphic adapter is internal GPU
of a i5-4570S CPU.

xorg.conf :
	Identifier  "Card0"
	Driver	    "intel"
	BusID	    "PCI:0:2:0"
	Option	    "AccelMethod"   "SNA"
	Option	    "DRI"	    "3"
EndSection


Regards,

JKB