On Tue, Oct 19, 2021 at 9:58 AM <andrii.nakryiko@xxxxxxxxx> wrote:
>
> From: Andrii Nakryiko <andrii@xxxxxxxxxx>
>
> btf_header's str_off+str_len or type_off+type_len can overflow as they
> are u32s. This will lead to bypassing the sanity checks during BTF
> parsing, resulting in crashes afterwards. Fix by using 64-bit signed
> integers for comparison.
>
> Fixes: d8123624506c ("libbpf: Fix BTF data layout checks and allow empty BTF")
> Reported-by: Evgeny Vereshchagin <evvers@xxxxx>
> Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Applied.
