Re: [PATCH 2/2] net: Implement SO_PEERCGROUP

[Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On Wed, Mar 12, 2014 at 01:58:57PM -0700, Cong Wang wrote:
> On Wed, Mar 12, 2014 at 1:46 PM, Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> > @@ -1098,6 +1135,16 @@ static int unix_stream_connect(struct socket *sock, struct sockaddr *uaddr,
> >         if (newsk == NULL)
> >                 goto out;
> >
> > +       err = init_peercgroup(newsk);
> > +       if (err)
> > +               goto out;
> > +
> > +       err = alloc_cgroup_path(sk);
> > +       if (err)
> > +               goto out;
> > +
> > +       err = -ENOMEM;
> > +
> 
> Don't we need to free the cgroup_path on error path
> in this function?

Previous allocated cgroup_path is now in newsk->cgroup_path and I was
relying on __sk_free() freeing that memory if error happens.

unix_release_sock(sk)
  sock_put()
    sk_free()
      __sk_free()
        kfree(sk->cgroup_path)

Do you see a problem with that?

Thanks
Vivek