ID:               27963
 Comment by:       Daniel dot Lindenberger at swivel dot net
 Reported By:      joobri at sas dot com
 Status:           Closed
 Bug Type:         Session related
 Operating System: *
 PHP Version:      4CVS, 5CVS (2004-04-13)
 New Comment:

On our system running 4.3.4, it seems to alternate between using
"files" and "user", despite the fact that it's defined as "files" in
php.ini, and is never set with session_module_name to "user". 

It was running fine for at least three months before the issue started
last week, when we started testing uploading extremely large files
through. We changed post_max_size and upload_max_filesize to 250M,
though I don't know how this could effect it.

We're only running around 10-20 apache processes at a time

We receive the message:
Fatal error: session_start(): Failed to initialize storage module.

When it is set to "user".

This may be fixed in subsequent versions, but was different enough from
Joobri's description that I thought I would mention it.


Previous Comments:
------------------------------------------------------------------------

[2004-06-15 15:05:01] datacompboy at mail dot ru

Looks like problem still.

Currently runned workaround via
auto_prepend_file       = /etc/httpd/phpinc.php

and in /etc/httpd/phpinc.php
<? session_module_name("files"); ?>

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

[2004-04-13 14:25:03] [EMAIL PROTECTED]

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.



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

[2004-04-12 10:37:46] joobri at sas dot com

Description:
------------
When PHP code is run that explicitly sets (and overrides) the default
value of session_module_name, subsequent requests to that httpd process
use the value that was set and do not default back to the default value.
 This causes intermittant problems on our web server running 300 httpd
processes - some apache processes have the default value and some have
a different value if they were set by code run on that process.


In the cases where it fails, the session module name
is not the configured default of "files" but is "user" instead.  It
looks like
in some circumstances an alternate session module is "left-over" from a
previous
request.  (I've seen similar "left-overs" with other configuration
directives,
notably error log level, in the past.)

The work-around we are using: add an explicit
session_module_name("files");
before calling any other session-related functions.

 
The following 2 errors are in the log:

/nfs/swwprod2/local/etc/httpd.dir/logs/error_log:[Thu Apr  8 09:23:18
2004]
[error] PHP Fatal error:  session_start() [<a
href='/sww/mirrors/php/function.session-start.html'>function.session-start.html<
]:
Failed to initialize storage module: user (path: /tmp) in
/remote/tappan/vol/vol4/tools/testhelp/websrc/existing.php on line 3
/nfs/swwprod2/local/etc/httpd.dir/logs/error_log:[Thu Apr  8 09:23:33
2004]
[error] PHP Fatal error:  session_start() [<a
href='/sww/mirrors/php/function.session-start.html'>function.session-start.html<
]:
Failed to initialize storage module: user (path: /tmp) in
/remote/tappan/vol/vol4/tools/testhelp/websrc/existing.php on line 3


Reproduce code:
---------------
Default Value: session_module_name("files");

In your code, specify session_module_name("user");

Set your apache server to run with only one httpd process - run your
code setting session_module_name to user.

Subsequent requests by a page not setting the session_module_name value
will have the session_module_name set to user and not default back to
files.

Expected result:
----------------
When you don't specify session_module_name it should set back to the
default value.

Actual result:
--------------
session_module_name retains the last value set, not the default value.


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


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