On 8/15/20 5:36 PM, Josef wrote: >> Please try: >> >> https://git.kernel.dk/cgit/linux-block/commit/?h=io_uring-5.9&id=41d3344604e80db0e466f9deca5262b0914e4827 >> >> There was a bug with the -EAGAIN doing repeated retries on sockets that >> are marked non-blocking. >> > > no it's not working, however I received the read event after > the second request (instead of the third request before) via Telnet Are you sure your code is correct? I haven't looked too closely, but it doesn't look very solid. There's no error checking, and you seem to be setting up two rings (one overwriting the other). FWIW, I get the same behavior on 5.7-stable and the above branch, except that the 5.7 hangs on exit due to the other bug you found and that is fixed in the 5.9 branch. I'll take a closer look later or tomorrow, but just want to make sure I'm not spending time debugging your program :) Hence it'd be helpful if you explain what your expectations are of the program, and how that differs from how it behaves. -- Jens Axboe
