How mapping many to many with automapper

I have many to many relation for tables functions and roles and I have association table RolesFunctions. In the RolesFunctions I have row id ( IdFunctions and IdRoles Both its a prime key). the problem is when I map function with functionDTO and roles with rolesDTO with AutoMapper I have this error "An unhandled exception of type 'System.StackOverflowException' occurred in AutoMapper.dll. Make sure you do not have an infinite loop or infinite recursion."

my mapping :

CreateMap<Function, FunctionTDTO>().ReverseMap();
CreateMap<Roles, RolesDTO>().ReverseMap();

How automapper map many to many relationship ?

function classe

public class Functions
    {
        public Functions()
        {
            this.Roles = new HashSet<Roles>();
        }
        public int Id { get; set; }
        public string Description { get; set; }
        public virtual ICollection<Roles> Roles { get; set; }
    }

function DTO

public class FunctionsDTO
    {
        public int Id { get; set; }
        public string Description { get; set; }
        public virtual ICollection<RolesDTO> Roles { get; set; }
    }

Role classe

public class Roles
    {
        public Roles()
        {
            this.Functions = new HashSet<Functions>();
        }
        public int Id { get; set; }
        public string Libelle { get; set; }
        public virtual ICollection<Functions> Functions { get; set; }
    }

RoleDTO classe

public class RolesDTO
    {
        public int Id { get; set; }
        public string Libelle { get; set; }
        public virtual ICollection<FunctionsDTO> Functions { get; set; }
    }