Since a655117 ("tools: start-vmm: enable Cloud Hypervisor landlock"), it's not possible to reboot a VM: ~ # ch-remote --api-socket /run/vm/by-id/dLPcEC/vmm reboot [2025-12-07T13:04:25Z ERROR cloud_hypervisor] Fatal error: HttpApiClient(ServerResponse(InternalServerError, Some("[\"Error from API\",\"The VM could not reboot\",\"Error creating console devices\",\"Error creating console device\",\"Permission denied (os error 13)\"]"))) Error: ch-remote exited with the following chain of errors: 0: http client error 1: Server responded with InternalServerError 2: Error from API 3: The VM could not reboot 4: Error creating console devices 5: Error creating console device 6: Permission denied (os error 13) I've opened an upstream bug reported about this: https://github.com/cloud-hypervisor/cloud-hypervisor/issues/7547