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From: Jens Axboe <[email protected]>
To: Josef <[email protected]>,
	Pavel Begunkov <[email protected]>,
	[email protected]
Cc: [email protected]
Subject: Re: io_uring process termination/killing is not working
Date: Sat, 15 Aug 2020 17:41:47 -0700	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAAss7+r8CZMVmxj0_mHTPUVbp3BzT4LGa2uEUjCK1NpXQnDkdw@mail.gmail.com>

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


  reply	other threads:[~2020-08-16  0:41 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-12 17:58 io_uring process termination/killing is not working Josef
2020-08-12 18:05 ` Jens Axboe
2020-08-12 18:20   ` Pavel Begunkov
2020-08-12 18:22     ` Pavel Begunkov
2020-08-12 18:28       ` Pavel Begunkov
2020-08-12 23:32         ` Jens Axboe
2020-08-13 16:07           ` Josef
2020-08-13 16:09             ` Jens Axboe
2020-08-15  7:45           ` Pavel Begunkov
2020-08-15 15:12             ` Jens Axboe
2020-08-15 16:48               ` Pavel Begunkov
2020-08-15 21:43                 ` Josef
2020-08-15 22:35                   ` Jens Axboe
2020-08-15 23:21                     ` Josef
2020-08-15 23:31                     ` Jens Axboe
2020-08-16  0:36                       ` Josef
2020-08-16  0:41                         ` Jens Axboe [this message]
2020-08-16  1:21                           ` Jens Axboe
2020-08-16  3:14                             ` Josef
2020-08-16  3:20                               ` Jens Axboe
2020-08-16 17:30                                 ` Jens Axboe
2020-08-16 21:09                                   ` Josef
2020-08-16 22:17                                     ` Jens Axboe
2020-08-17  8:58                                       ` Josef
2020-08-17 10:08                                         ` Pavel Begunkov
2020-08-16 13:45                 ` Jens Axboe
2020-08-16 14:53                   ` Jens Axboe
2020-08-16 15:22                     ` Jens Axboe
2020-08-17 10:16                       ` Pavel Begunkov

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