Welcome! Log In Create A New Profile

Advanced

Re: Fwd: 1.17.5 regression

Gábor Boskovits
December 18, 2019 12:36PM
Hello Maxim,

Maxim Dounin <mdounin@mdounin.ru> ezt írta (időpont: 2019. dec. 18.,
Sze, 18:24):
>
> Hello!
>
> On Mon, Dec 16, 2019 at 03:02:37PM +0100, Gábor Boskovits wrote:
>
> > On berlin.guix.gnu.org we observed a regression upon upgrading nginx
> > to 1.17.5. The problem was, when pipelining request to a proxy using
> > tls, we suddenly started to get 408 client timeouts, manifesting in
> > dropped connections. Currently we worked around the issue by
> > downgrading to 1.17.4. I have collected some information about the
> > problem here:
> > https://gitlab.com/g_bor/fix-nginx-tls
> > It contains the logs from the good and the bad version, a full nginx
> > config, some info about how nginx was built. I managed to bisect the
> > problem down to changeset 9d2ad2fb4423, which introduced the problem.
> > Any help in further debuggin this would be greatly appreciated.
>
> Thanks for the report, it indeed looks like a bug introduced
> in 9d2ad2fb4423.
>
> The problem is that c->read->handler is overwritted when switching
> to the next pipelined request, ngx_ssl_next_read_handler() is not
> called, and c->read->ready remains not set. I'll take a look how
> to fix it properly.

Thanks for having a look.

Please keep me updated when the fix gets applied.

>
> Note well that a simpler workaround might be to build nginx with
> the --with-cc-opt="-DNGX_HAVE_FIONREAD=0" configure argument, this
> will disable the code in question on systems not using kqueue.
>

Thanks for the information, we do not yet support any systems with kqueue yet,
so this might work temporarily.

> --
> Maxim Dounin
> http://mdounin.ru/
> _______________________________________________
> nginx-devel mailing list
> nginx-devel@nginx.org
> http://mailman.nginx.org/mailman/listinfo/nginx-devel

Best regards,
g_bor
--
OpenPGP Key Fingerprint: 7988:3B9F:7D6A:4DBF:3719:0367:2506:A96C:CF63:0B21
_______________________________________________
nginx-devel mailing list
nginx-devel@nginx.org
http://mailman.nginx.org/mailman/listinfo/nginx-devel
Subject Author Views Posted

Fwd: 1.17.5 regression

Gábor Boskovits 147 December 16, 2019 09:04AM

Re: Fwd: 1.17.5 regression

Maxim Dounin 30 December 18, 2019 12:26PM

Re: Fwd: 1.17.5 regression

Gábor Boskovits 29 December 18, 2019 12:36PM

Re: Fwd: 1.17.5 regression

ru@nginx.com 28 December 19, 2019 03:46AM

Re: Fwd: 1.17.5 regression

Gábor Boskovits 25 December 19, 2019 04:34AM

Re: Fwd: 1.17.5 regression

Maxim Dounin 27 December 19, 2019 07:46AM

Re: Fwd: 1.17.5 regression

Gábor Boskovits 31 December 19, 2019 09:02AM

Re: Fwd: 1.17.5 regression

Maksim Yevmenkin 33 December 19, 2019 12:02PM

Re: Fwd: 1.17.5 regression

Maxim Dounin 26 December 23, 2019 08:36AM

Re: Fwd: 1.17.5 regression

Maxim Dounin 32 December 23, 2019 02:30PM

Re: Fwd: 1.17.5 regression

Gábor Boskovits 26 December 24, 2019 10:46AM

Re: Fwd: 1.17.5 regression

Maxim Dounin 29 December 24, 2019 11:46AM

Re: Fwd: 1.17.5 regression

Gábor Boskovits 25 December 24, 2019 11:56AM

Re: Fwd: 1.17.5 regression

Maksim Yevmenkin 27 December 24, 2019 12:02PM

Re: Fwd: 1.17.5 regression

Maxim Dounin 30 December 24, 2019 12:28PM

Re: 1.17.5 regression

Sergey Kandaurov 60 December 25, 2019 05:16AM



Sorry, you do not have permission to post/reply in this forum.

Online Users

Guests: 85
Record Number of Users: 6 on February 13, 2018
Record Number of Guests: 421 on December 02, 2018
Powered by nginx      Powered by FreeBSD      PHP Powered      Powered by MariaDB      ipv6 ready