Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing

From:	merrill at oakland dot edu	Date:	Thu, 13 Apr 2017 20:22:03 +0000
Subject:	Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
References:	1	Groups:	php.bugs
Request:	Send a blank email to php-bugs+get-208535@lists.php.net to get a copy of this message

Edit report at https://bugs.php.net/bug.php?id=70185&edit=1

 ID:                 70185
 Comment by:         merrill at oakland dot edu
 Reported by:        kobenews at cox dot net
 Summary:            php-fpm restarts master process in a loop when
                     exec() and using ssh multiplexing
 Status:             Open
 Type:               Bug
 Package:            FPM related
 Operating System:   CentOS release 6.6 (Final)
 PHP Version:        5.4.43
 Block user comment: N
 Private report:     N

 New Comment:

We are seeing the same issue, although in our case we aren't doing anything with a socket in
SSH. We are just connecting an issuing a command - in fact I can just do "ssh
sshserver.whatever -i pathtoidentfile \"sleep 10\"" and php-fpm will keep responding
processes, flooding the logs with warnings and causing the machine to bottleneck.


Previous Comments:
------------------------------------------------------------------------
[2017-04-13 08:43:56] php at grindau dot com

I will never report a bug again.
This kind of ignorance is just bullshit.

------------------------------------------------------------------------
[2017-03-24 09:36:17] please at forget dot me dot uk

I have the same problem on php 7.0.17(from 7.0.15) with FreeBSD 11.
restarting php-fpm helps. 
however, I am using perl modules inside nginx to look after node CSS - and CSS files produce cut
versions like PHP-fpm so I assume problem is somewhere in the middle of: php-fpm -- nginx -- node ;
with perl I have to restart webserver.

------------------------------------------------------------------------
[2017-03-18 21:35:45] php at grindau dot com

Any news on this?
Is it reproduceable?

While rechering i found some topics about stdin non-blocking behaviour of apps which might cause
that issue.

Hope that helps.

------------------------------------------------------------------------
[2017-03-13 14:31:09] php at grindau dot com

Well, there is no shell-scripts, this code runs inside of my classes.

I was able to narrow it down to all shell functions like
passthru(), exec(), shell_exec(), system(), etc, it happens with every of them.

i tried to run this cli-module on my arch linux:
https://github.com/css/csso
by executing this
/usr/lib/node_modules/csso/bin/csso infile.css --output outfile.css
the same happened with UglifyCSS: https://github.com/fmarcia/UglifyCSS
but not with UglifyJS: https://github.com/mishoo/UglifyJS

I am also running java jars inside those functions for years without any issue.
Like Yuicompressor: http://yui.github.io/yuicompressor/

Hope that helps.
Regards
Sascha

------------------------------------------------------------------------
[2017-03-10 23:14:05] kobenews at cox dot net

php@grindau dot com: I'd love to get a test case script, without requiring lots of setup and
dependencies. Anybody have ideas?

This does seem to indicate a bug though.

------------------------------------------------------------------------


The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at

    https://bugs.php.net/bug.php?id=70185


--
Edit this bug report at https://bugs.php.net/bug.php?id=70185&edit=1


   

Thread (28 messages)

• kobenews at cox dot netMon, 03 Aug 2015 02:54:44 +0000
  • kobenews at cox dot netMon, 03 Aug 2015 03:21:06 +0000Bug #70185 [Opn]: php-fpm restarts process forever when exec() and using ssh multiplexing
  • kobenews at cox dot netFri, 07 Aug 2015 20:13:58 +0000Bug #70185 [Opn]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at plainview dot seTue, 08 Sep 2015 20:39:32 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • kobenews at cox dot netWed, 09 Sep 2015 02:18:53 +0000Bug #70185 [Opn]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • i dot priladnyh at gmail dot comFri, 22 Jan 2016 08:06:12 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • sylvain at com-ocean dot comFri, 24 Feb 2017 13:52:10 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comFri, 10 Mar 2017 20:03:51 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • kobenews at cox dot netFri, 10 Mar 2017 23:14:06 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comMon, 13 Mar 2017 14:31:13 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comSat, 18 Mar 2017 21:35:49 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • please at forget dot me dot ukFri, 24 Mar 2017 09:36:20 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comThu, 13 Apr 2017 08:43:58 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • merrill at oakland dot eduThu, 13 Apr 2017 20:22:03 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • jlaustill at gmail dot comMon, 17 Apr 2017 20:22:04 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comThu, 20 Apr 2017 09:37:16 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comMon, 24 Apr 2017 22:49:55 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • spam2 at rhsoft dot netTue, 25 Apr 2017 05:24:06 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comTue, 25 Apr 2017 10:24:24 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comTue, 25 Apr 2017 11:28:57 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • spam2 at rhsoft dot netTue, 25 Apr 2017 11:36:00 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • merrill at oakland dot eduTue, 25 Apr 2017 14:04:20 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • php at grindau dot comTue, 25 Apr 2017 14:24:15 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • d dot reade at reades dot co dot ukFri, 21 Jul 2017 09:36:49 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • mike at sagesolutionsinc dot caThu, 21 Sep 2017 18:07:21 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • schnederle at futureweb dot atFri, 16 Feb 2018 15:09:41 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • schnederle at futureweb dot atFri, 16 Feb 2018 15:24:12 +0000Bug #70185 [Com]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing
  • nikic@php.netFri, 23 Feb 2018 16:55:17 +0000Bug #70185 [Opn->Dup]: php-fpm restarts master process in a loop when exec() and using ssh multiplexing