Req #38915 [Com]: Apache: system() (and similar) don't cleanup opened handles of Apache

From: Date: Wed, 27 Dec 2023 15:43:00 +0000
Subject: Req #38915 [Com]: Apache: system() (and similar) don't cleanup opened handles of Apache
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-246138@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=38915&edit=1

 ID:                 38915
 Comment by:         testing at example dot com
 Reported by:        dimmoborgir at gmail dot com
 Summary:            Apache: system() (and similar) don't cleanup opened
                     handles of Apache
 Status:             Analyzed
 Type:               Feature/Change Request
 Package:            Program Execution
 Operating System:   UNIX
 PHP Version:        5.2.2, 4.4.7
 Block user comment: N
 Private report:     N

 New Comment:

555


Previous Comments:
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[2023-12-27 15:42:48] testing at example dot com

555

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[2023-12-27 15:42:38] testing at example dot com

555

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[2023-12-27 15:10:55] testing at example dot com

The following patch has been added/updated:

Patch Name: tsSLAueP
Revision:   1703689855
URL:        https://bugs.php.net/patch-display.php?bug=38915&patch=tsSLAueP&revision=1703689855

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[2014-03-14 13:02:42] php at braten dot be

Related To: Bug #15529

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[2013-12-03 17:23:11] brak at gameservers dot com

This same issue appears to happen with PHP-FPM (I am using nginx as the webserver, but that
shouldn't matter).  PHP version 5.4.22 on Linux (CentOS 6.5)


Quick example:
<?php
        $p = popen('/bin/bash -c "sleep 60"','w');
        pclose($p);
?>

Now find the child process (ps aux | grep sleep) and lsof -p XXX -n:

sleep   13443 nobody    0r  FIFO      0,8      0t0 10237775 pipe
sleep   13443 nobody    1u   CHR      1,3      0t0     3920 /dev/null
sleep   13443 nobody    2u   CHR      1,3      0t0     3920 /dev/null
sleep   13443 nobody    4u  IPv4 10236693      0t0      TCP 127.0.0.1:cslistener->127.0.0.1:53151
(ESTABLISHED)
sleep   13443 nobody    9u   REG      0,9        0     3918 [eventpoll]


FD 4 there is the TCP connection from the PHP worker process to the web server.

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