I have a custom auth provider, similar to the WSSE example (but not stateless), and set it up for a certain path.

security:
    firewalls:
        my_rest_session:
            pattern: ^/api/rest_with_session/v1
            xxx: true

An exception gets thrown by Symfony, telling me that:

The check_path "/login_check" for login method "xxx" is not matched by the firewall pattern.

I think that in this case there should be no validation done of check_path and login_path