Re: [RFC PATCH bpf-next 1/2] bpf, x64: Fix tailcall infinite loop bug

[Alexei Starovoitov]

On Mon, Aug 14, 2023 at 09:41:46PM +0800, Leon Hwang wrote:
> @@ -1147,6 +1152,7 @@ struct bpf_attach_target_info {
>  	struct module *tgt_mod;
>  	const char *tgt_name;
>  	const struct btf_type *tgt_type;
> +	bool tail_call_ctx;

Instead of extra flag here can you check tgt_prog->aux->tail_call_reachable in check_attach_btf_id()
and set tr->flags there?
Other than this the fix makes sense.
Please trim your cc list when you respin.
Just maintainers, Maciej (author of fixes tag) and bpf@vger is enough.