From: Jens Axboe <[email protected]>
To: Glauber Costa <[email protected]>
Cc: Avi Kivity <[email protected]>, [email protected]
Subject: Re: crash on accept
Date: Wed, 19 Feb 2020 19:53:05 -0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAD-J=zYcT6VSGhu81e=UJ3SrjfuPJLF9qB5T176OhZjfEpS26g@mail.gmail.com>
On 2/19/20 7:52 PM, Glauber Costa wrote:
> I don't see a crash now, thanks.
Updated again, should be more solid now. Just in case you run into
issues.
> I can now go back to trying to figure out why the test is just hanging
> forever, as I was doing earlier =)
> (99.9% I broke something with the last rework).
>
> Out of curiosity, as it may help me with the above: I notice you
> didn't add a patch on top, but rather rebased the tree.
Yeah, the poll based async bits are very much a work in progress,
and I'll just fold fixes for now.
> What was the problem leading to the crash ?
It had to do with repeated retry. Eg we want to read from something,
we try and get -EAGAIN. Arm the poll handler, poll results says we're
good to go. Retry, get -EAGAIN again. Now we give up, but the state
wasn't restored properly.
--
Jens Axboe
prev parent reply other threads:[~2020-02-20 3:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAD-J=zZnmnjgC9Epd5muON2dx6reCzYMzJBD=jFekxB9mgp6GA@mail.gmail.com>
2020-02-19 20:09 ` crash on accept Jens Axboe
2020-02-19 20:11 ` Glauber Costa
2020-02-19 20:12 ` Jens Axboe
2020-02-19 20:25 ` Glauber Costa
2020-02-19 20:29 ` Avi Kivity
2020-02-19 23:09 ` Jens Axboe
2020-02-20 1:37 ` Jens Axboe
2020-02-20 2:52 ` Glauber Costa
2020-02-20 3:53 ` Jens Axboe [this message]
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