From: jibe at sdf dot lonestar dot org
Operating system: FreeBSD 5.2.1
PHP version: 4.3.10
PHP Bug Type: Reproducible crash
Bug description: Crash related to php_session_start and configuration
Description:
------------
hi gang,
using the "session" extension was crashing apache here, making drupal and
other software unusable.
With session.save_handler set to "user" in php.ini, I can
see that "save_path" arrives as 0x0 in "ps_open_user" in
mod_user, and apache crashes.
My fix for now is to hardcode this
PS(save_path) = malloc(strlen("/tmp/") + 1);
strcpy(PS(save_path), "/tmp/");
in session.c, and things work fine. Unfortunately I have
no expertise to track this bug much more.
Cheers!
Reproduce code:
---------------
Use drupal..
Expected result:
----------------
Apache crashes, and your dmesg is full of
[...]
pid 99709 (httpd), uid 80: exited on signal 11
[...]
Actual result:
--------------
Attaching httpd with gdb (session module compiled in debug
mode):
(gdb)
(gdb) continue
Continuing.
Program received signal SIGSEGV, Segmentation fault.
0x2906b8bf in ps_open_user (mod_data=0xffffff00, save_path=0x0,
session_name=0x85b12ac "POSTNUKESID")
at
/usr/ports/www/php4-session/work/php-4.3.10/ext/session/mod_user.c:95
95 SESS_ZVAL_STRING(save_path, args[0]);
--
Edit bug report at http://bugs.php.net/?id=31212&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=31212&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=31212&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=31212&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=31212&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=31212&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=31212&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=31212&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=31212&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=31212&r=support
Expected behavior: http://bugs.php.net/fix.php?id=31212&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=31212&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=31212&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=31212&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=31212&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=31212&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=31212&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=31212&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=31212&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=31212&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=31212&r=mysqlcfg
