Quoting Stéphane Graber (stgra...@ubuntu.com):
> There's no good reason to call setup_mount_entries if we don't have any
> lxc.mount.entry. This also avoids an issue on bionic where the tmpfile()
> call in setup_mount_entries requires the presence of /tmp which isn't the
> case by default.
> 
> Signed-off-by: Stéphane Graber <stgra...@ubuntu.com>

(There are other ways it could be done I suppose, but this is fine)

Acked-by: Serge E. Hallyn <serge.hal...@ubuntu.com>

> ---
>  src/lxc/conf.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/src/lxc/conf.c b/src/lxc/conf.c
> index 3c44ea5..945c3b8 100644
> --- a/src/lxc/conf.c
> +++ b/src/lxc/conf.c
> @@ -2599,7 +2599,7 @@ int lxc_setup(const char *name, struct lxc_conf 
> *lxc_conf)
>               return -1;
>       }
>  
> -     if (setup_mount_entries(&lxc_conf->rootfs, &lxc_conf->mount_list, 
> name)) {
> +     if (!lxc_list_empty(&lxc_conf->mount_list) && 
> setup_mount_entries(&lxc_conf->rootfs, &lxc_conf->mount_list, name)) {
>               ERROR("failed to setup the mount entries for '%s'", name);
>               return -1;
>       }
> -- 
> 1.8.0
> 
> 
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