Why VM snapshot in OpenShift Virtualization is failing during fsfreeze with permission denied error?

Issue

• While taking the snapshot of the VM in OpenShift Virtualization, the filesystem freeze is failing and below error is logged in the virt-controller logs:

{"component":"virt-controller","level":"info","msg":"Freeze VMI rhel9-cdyl0ww3f7dx2s2c","pos":"vmi.go:244","timestamp":"2023-08-25T12:08:12.099206Z"}
{"component":"virt-controller","level":"info","msg":"Freezing vmi rhel9-cdyl0ww3f7dx2s2c took 134.699414ms","pos":"util.go:44","timestamp":"2023-08-25T12:08:12.233858Z"}
E0825 12:08:12.234049       1 util.go:72] Internal error occurred: unexpected return code 400 (400 Bad Request)