Re: [PATCH bpf-next v2 0/2] bpf: Build with -Wcast-function-type

Alexei Starovoitov
2021-09-28T23:34:07Z

On Tue, Sep 28, 2021 at 4:09 PM Kees Cook <keescook@chromium.org> wrote:
>
> Hi,
>
> In order to keep ahead of cases in the kernel where Control Flow Integrity
> (CFI) may trip over function call casts, enabling -Wcast-function-type
> is helpful. To that end, replace BPF_CAST_CALL() as it triggers warnings
> with this option and is now one of the last places in the kernel in need
> of fixing.
>
> Thanks,
>
> -Kees
>
> v2:
> - rebase to bpf-next
> - add acks
> v1: https://lore.kernel.org/lkml/20210927182700.2980499-1-keescook@chromium.org

Applied. Thanks