bpf: Wrap aux data inside bpf_sanitize_info container

bpf: Wrap aux data inside bpf_sanitize_info container

Add a container structure struct bpf_sanitize_info which holds
the current aux info, and update call-sites to sanitize_ptr_alu()
to pass it in. This is needed for passing in additional state
later on.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Piotr Krysiuk <piotras@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
(cherry picked from commit 3d0220f6861d713213b015b582e9f21e5b28d2e0)
CVE-2021-33200
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Acked-by: Ian May <ian.may@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>