> On Nov 7, 2019, at 10:40 PM, Alexei Starovoitov <ast@xxxxxxxxxx> wrote:
>
> btf_resolve_helper_id() caching logic is a bit racy, since under root the
> verifier can verify several programs in parallel. Fix it with READ/WRITE_ONCE.
> Fix the type as well, since error is also recorded.
>
> Fixes: a7658e1a4164 ("bpf: Check types of arguments passed into helpers")
> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Acked-by: Song Liu <songliubraving@xxxxxx>
