qemu crashes with: "qemu-kvm: hw/char/serial.c:232: serial_xmit: Assertion '!(s->lsr & 0x40)' failed." in Red Hat OpenStack Platform

Solution In Progress - Updated -

Issue

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Qemu terminates the execution and the VM is stopped instantly.
The qemu log contains the following error:

qemu-kvm: hw/char/serial.c:232: serial_xmit: Assertion '!(s->lsr & 0x40)' failed.
2018-10-19 20:14:27.633+0000: shutting down

Environment

Red Hat Openstack Platform 10

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