On 25/09/2024 9:42 am, Roger Pau Monne wrote:
> diff --git a/xen/common/livepatch.c b/xen/common/livepatch.c
> index 87b3db03e26d..8e61083f23a7 100644
> --- a/xen/common/livepatch.c
> +++ b/xen/common/livepatch.c
> @@ -470,6 +470,31 @@ static int xen_build_id_dep(const struct payload
> *payload)
> return 0;
> }
>
> +/* Parses build-id sections into the given destination. */
> +static int parse_buildid(const struct livepatch_elf_sec *sec,
> + struct livepatch_build_id *id)
> +{
> + const Elf_Note *n;
> + int rc;
> +
> + /* Presence of the sections is ensured by check_special_sections(). */
> + ASSERT(sec);
> +
> + n = sec->load_addr;
> +
> + if ( sec->sec->sh_size <= sizeof(*n) )
> + return -EINVAL;
> +
> + rc = xen_build_id_check(n, sec->sec->sh_size, &id->p, &id->len);
I've just realised what is so confusing.
This function is not a Xen buildid check, it's an ELF buildid note check.
I'll do a followup patch after yours goes in renaming it.
Reviewed-by: Andrew Cooper <[email protected]>
