This issue was introduced by CVE-2017-15124. Since this CVE was applied, the connection between VM and VNC client would be failed with segment fault .
remove the CVE-2017-15124 patches in qemu layer located in layers/oe-core layer.
1.configure host and guest 1.1 host wrlinux_8_0_head/wrlinux/configure --enable-board=intel-x86-64 --enable-rootfs=ovp-kvm+installer-support --enable-addons=wr-ovp --enable-jobs=40 --enable-parallel-pkgbuilds=40 --enable-reconfig --with-layer=wr-dpdk --enable-bootimage=hdd,tar.bz2 --with-bootimage-space=1024 --enable-checkout-all-layers=yes --enable-rm-oldimgs=yes --with-init=sysvinit --enable-internet-download=yes --with-rcpl-version=0 1.2 guest wrlinux_8_0_head/wrlinux/configure --enable-board=intel-x86-64 --enable-rootfs=ovp-guest+installer-support --enable-addons=wr-ovp --enable-jobs=40 --enable-parallel-pkgbuilds=40 --enable-reconfig --with-layer=wr-dpdk --enable-bootimage=hdd,tar.bz2 --with-bootimage-space=1024 --enable-checkout-all-layers=yes --enable-rm-oldimgs=yes --with-init=sysvinit --enable-internet-download=yes --with-rcpl-version=0 2. build the host and guest make fs 2.start qemu with vnc qemu-system-x86_64 -m 1024 -drive file=./wrlinux8.qcow2,if=virtio -enable-kvm -cpu host -vnc :1 it fails with the following error: qemu-system-x86[29338]: segfault at 0 ip 000056167b91b51e sp 00007f0077dec480 error 6 in qemu-system-x86_64[56167b629000+4ac000]
