qemu crashes with assertion error `!mr->container' failed

Re-production steps:
git clone today's qemu git tree (4th Oct 2017)
./configure --target-list=ppc64-softmmu && make -j 8

Run the device-crash-test from scripts folder, seeing the following error

INFO: running test case: machine=bamboo binary=ppc64-softmmu/qemu-system-ppc64 device=pcie-pci-bridge accel=kvm
WARNING: qemu received signal -6: ppc64-softmmu/qemu-system-ppc64 -chardev socket,id=mon,path=/var/tmp/qemu-30972-monitor.sock -mon chardev=mon,mode=control -display none -vga none -S -machine bamboo,accel=kvm -device pcie-pci-bridge
CRITICAL: failed: machine=bamboo binary=ppc64-softmmu/qemu-system-ppc64 device=pcie-pci-bridge accel=kvm
CRITICAL: cmdline: ppc64-softmmu/qemu-system-ppc64 -S -machine bamboo,accel=kvm -device pcie-pci-bridge
CRITICAL: log: qemu-system-ppc64: /home/nasastry/qemu/memory.c:1699: memory_region_finalize: Assertion `!mr->container' failed.
CRITICAL: log: warning: KVM does not support watchdog
CRITICAL: exit code: -6