Libvirt/kvm Changes /dev/ttyS0

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A new kvm guest on a CentOS6.5 x84_64 host is set up to make use of the serial port (virt-install … –serial dev,path=/dev/ttyS0)




When I launch the vm, setroubleshootd goes into overdrive and creates massive logs, and /var/log/messages starts growing significantly also. The reason is that as soon as the vm starts, ownership and context of /dev/ttyS0 on the host are being reset. Why is that, and how can I prevent it from happening?

Should be:

crw-rw—-. root dialout system_u:object_r:tty_device_t:s0 /dev/ttyS0

Changes to:

crw-rw—-. qemu qemu unconfined_u:object_r:svirt_image_t:s0:c9,c796 /dev/ttyS0

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