Hello,

Sorry if this is a basic question, but I think I may be having trouble following the basic example in the docs/api.md documentation.

The example in the doc:
https://github.com/cloud-hypervisor/cloud-hypervisor/blob/main/docs/api.md#rest-api-examples

seem to say, if I understand it correctly, that once the cloud-hypervisor binary is built locally, running the program with the flag --api-socket /tmp/cloud-hypervisor.sock should output

Cloud Hypervisor Guest
    API server: /tmp/cloud-hypervisor.sock
    vCPUs: 1
    Memory: 512 MB
    Kernel: None
    Kernel cmdline:
    Disk(s): None

however, when I run the command to execute the binary with the required flag

./target/debug/cloud-hypervisor --api-socket /tmp/cloud-hypervisor.sock

I get no output in my terminal, just a line return but no prompt being printed to signal that the program is executing.

Furthermore, when I try the next part of the example

#!/usr/bin/env bash

curl --unix-socket /tmp/cloud-hypervisor.sock -i \
     -X PUT 'http://localhost/api/v1/vm.create'  \
     -H 'Accept: application/json'               \
     -H 'Content-Type: application/json'         \
     -d '{
         "cpus":{"boot_vcpus": 4, "max_vcpus": 4},
         "payload":{"kernel":"/opt/clh/kernel/vmlinux-virtio-fs-virtio-iommu", "cmdline":"console=ttyS0 console=hvc0 root=/dev/vda1 rw"},
         "disks":[{"path":"/opt/clh/images/focal-server-cloudimg-amd64.raw"}],
         "rng":{"src":"/dev/urandom"},
         "net":[{"ip":"192.168.10.10", "mask":"255.255.255.0", "mac":"12:34:56:78:90:01"}]
         }'

curl outputs

curl: (52) Empty reply from server

and the program crashes with SIGSYS

==== Possible seccomp violation ====
                                    Try running with `strace -ff` to identify the cause and open an issue: https://github.com/cloud-hypervisor/cloud-hypervisor/issues/new
                                         fish: Job 1, './target/debug/cloud-hypervisor…' terminated by signal SIGSYS (Bad system call)

I am running the program on a ThinkPad T490 with Debian 12.8 Bookworm distribution, Linux kernel 6.1.0-28-amd64.

Following the program error message, I tried strace -ff ./target/debug/cloud-hypervisor --api-socket /tmp/cloud-hypervisor.sock and got a long output, which I've put in an attached file because it seem too big to paste into the Github issue box.

strace-api-unix-socket.txt