kernel/bpf/btf.c

6315 		const struct bpf_ctx_arg_aux *ctx_arg_info = &prog->aux->ctx_arg_info[i];
6318 		type = base_type(ctx_arg_info->reg_type);
6319 		flag = type_flag(ctx_arg_info->reg_type);
6320 		if (ctx_arg_info->offset == off && type == PTR_TO_BUF &&
6322 			info->reg_type = ctx_arg_info->reg_type;
6339 		const struct bpf_ctx_arg_aux *ctx_arg_info = &prog->aux->ctx_arg_info[i];
6341 		if (ctx_arg_info->offset == off) {
6342 			if (!ctx_arg_info->btf_id) {
6347 			info->reg_type = ctx_arg_info->reg_type;
6348 			info->btf = ctx_arg_info->btf ? : btf_vmlinux;
6349 			info->btf_id = ctx_arg_info->btf_id;