#36808 [Opn->Csd]: syslog will output garbage from apache child process memory
| From: | tony2001@php.net | Date: | Mon, 20 Mar 2006 23:07:38 +0000 |
| Subject: | #36808 [Opn->Csd]: syslog will output garbage from apache child process memory | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-94690@lists.php.net to get a copy of this message | ||
ID: 36808
Updated by: tony2001@php.net
Reported By: emchen at isc dot upenn dot edu
-Status: Open
+Status: Closed
Bug Type: Unknown/Other Function
Operating System: Linux 2.6.9 / RHEL4
PHP Version: 5.1.2
New Comment:
This bug has been fixed in CVS.
Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
Thank you for the report, and for helping us make PHP better.
Previous Comments:
------------------------------------------------------------------------
[2006-03-20 23:29:34] emchen at isc dot upenn dot edu
Description:
------------
the bug is a bit difficult to explain, it revolves around an apache
child process handling multiple PHP requests that use openlog/syslog.
the behavior of the bug is described in bug #28722 and bug #35777,
namely garbage appearing as the process name / ident field in syslog.
the bug occurs when an apache child process handles a script that makes
an openlog called followed by a script that makes a syslog called
without openlog (separate requests).
Reproduce code:
---------------
to recreate bug:
1.) set Apache (forking) MaxClients 1
2.) call php script with:
<?
syslog(LOG_WARNING,"testing");
?>
3.) call php script with:
<?
openlog("MYLOG",LOG_PID,LOG_LOCAL0);
syslog(LOG_WARNING,"this is a warning");
?>
4.) call php script with:
<?
phpinfo();
?>
4.) call php script with:
<?
syslog(LOG_WARNING,"testing");
?>
Expected result:
----------------
in the attached code; the calls to syslog in step 2,3 produce normal
output, output from step 4 should be garbage.
since the apache child process persists beyond the execution of the PHP
scripts, step 4 picks up the results of the openlog call in step 2.
when sylog gets called the 3rd time the reference to "ident" is
garbage.
Actual result:
--------------
user.log: Mar 20 16:54:15 [host] httpd: testing
local0.log: Mar 20 16:56:41 [host] MYLOG[18679]: this is a warning
local0.log: Mar 20 16:58:57 [host] [garbage][18679]: testing
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=36808&edit=1