[PATCH v4 02/11] mem: avoid hugepage path overflow

[David Marchand]

On Thu, 5 Feb 2026 at 22:30, Thomas Monjalon <thomas at monjalon.net> wrote:
> @@ -446,8 +447,14 @@ find_numasocket(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
>                 return 0;
>         }
>
> -       snprintf(hugedir_str, sizeof(hugedir_str),
> -                       "%s/%s", hpi->hugedir, eal_get_hugefile_prefix());
> +       ret = asprintf(&hugedir_str, "%s/%s",
> +                       hpi->hugedir, eal_get_hugefile_prefix());
> +       if (ret < 0) {
> +               EAL_LOG(ERR, "%s(): failed to store hugepage path", __func__);
> +               goto error;

On asprintf failure, hugedir_str content is undefined.
It is safer to reset hugedir_str to NULL before jumping to the error
label where free() is called.


-- 
David Marchand