On Thu, 2024-01-25 at 12:55 -0800, Andrii Nakryiko wrote:
[...]
> @@ -6379,11 +6388,21 @@ static bool need_func_arg_type_fixup(const struct btf *btf, const struct bpf_pro
> /* special cases */
> switch (prog->type) {
> case BPF_PROG_TYPE_KPROBE:
> - case BPF_PROG_TYPE_PERF_EVENT:
> /* `struct pt_regs *` is expected, but we need to fix up */
> if (btf_is_struct(t) && strcmp(tname, "pt_regs") == 0)
> return true;
> break;
Sorry, this was probably discussed, but I got lost a bit.
Kernel side does not change pt_regs for BPF_PROG_TYPE_KPROBE
(in ./kernel/bpf/btf.c:btf_validate_prog_ctx_type)
but here we do, why do it differently?
[...]
