OCI runtime error: crun: mount `proc` to `/proc`: Too many levels of symbolic links

(Continuation of discussion from https://github.com/containers/crun/issues/1115 )

yes, that seems like a different error and one I've never seen before.

Do you see the same error if you run something like `$ sudo unshare -muinp -f --mount-proc=/proc echo hello`?

Could you strace the command to see where it fails?

`$ sudo strace -Z -f -s 1000 podman run -tid --net host busybox sh`

_Originally posted by @giuseppe in https://github.com/containers/crun/issues/1115#issuecomment-1381481362_

```
chronos@localhost /usr/local/lib/crew/packages (master *%|SPARSE=)$ sudo unshare -muinp -f --mount-proc=/proc echo hello
hello
```

```
sudo podman run -tid --net host busybox sh
Your kernel does not support pids limit capabilities or the cgroup is not mounted. PIDs limit discarded.
Error: OCI runtime error: crun: mount `proc` to `/proc`: Too many levels of symbolic links
```

```
sudo strace -Z -f -s 1000 --output=/usr/local/tmp/crun_strace.output.txt podman run -tid --net host busybox sh
Your kernel does not support pids limit capabilities or the cgroup is not mounted. PIDs limit discarded.
Error: OCI runtime error: crun: mount `proc` to `/proc`: Too many levels of symbolic links
```
[crun_strace.output.txt](https://github.com/containers/crun/files/10412752/crun_strace.output.txt)