On Tue, 05 Apr 2016 18:29:51 +0200, Pedro Alves wrote: > MustReplyEmpty is actually not a useful probe packet, because > that's actually an M (write memory) packet, which is then > misinterpreted and fails the write. So not an unknown packet. Oops, OK. > Try qMustReplyEmpty or something like that instead. With these requirements on this workaround I have followed the gdbserver-7.6 sources and the bug was in function handle_notif_ack which is called only from handle_v_requests, therefore for any packets /^v/. OK to check in this one? Thanks, Jan