[oe] [meta-qt5] QtWebEngine SEGV_MAPERR when opening web view on Raspberry Pi 3

[kdgoncharov at gmail.com]

Hi

I'm using meta-qt5 and meta-raspberrypi layers to build an image for Rapberry Pi 3. The image contains PyQt app running with eglfs plugin.
Starting from QT 5.9.4 (commit e1046125d212a016d96944ff907e17d51a5b41af on rocko branch), QtWebEngine view started to crash with SEGV_MAPERR. The error also occurs with QT 5.10.1 built from the sumo branch:

Received signal 11 SEGV_MAPERR 000000000000
#0 0x000072a7ab4a <unknown>
#1 0x000072a7a9c6 <unknown>
#2 0x000071eda2c8 <unknown>
#3 0x000072a7adc2 <unknown>
#4 0x000076bb4d30 <unknown>
[end of stack trace]
Calling _exit(1). Core file will not be generated.

I posted a bug report on QT tracker with more details about the crash: https://bugreports.qt.io/browse/QTBUG-68484 (https://bugreports.qt.io/browse/QTBUG-68484)
But maybe something is wrong with my configuration and I have to update it?

I'm using core-image-minimal with several modifications. Here is my qtbase_git.bbappend:

PACKAGECONFIG_GL = "eglfs gles2"
PACKAGECONFIG_append = " fontconfig "