From: h dot fietz at dezem dot de
Operating system: Gentoo 2006.1
PHP version: 5.2.3
PHP Bug Type: Reproducible crash
Bug description: session_start segfaults with Apache 2
Description:
------------
PHP crashes ("Child pid xxx exit signal segmentation fault" in Apache's
error_log) on calling session_start().
Environment:
AMD Opteron 146 (64bit)
Gentoo Linux 2006.1
Apache 2.0.58
PHP 5.2.3 from portage ebuild
Reproduce code:
---------------
<?
sleep(30); // give some time to attach gdb
session_start(); // crash
echo "Never comes here<br>";
?>
Expected result:
----------------
session starts
Actual result:
--------------
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 46971518093328 (LWP 26146)]
0x00002ab8688ac430 in strlen () from /lib/libc.so.6
(gdb) bt
#0 0x00002ab8688ac430 in strlen () from /lib/libc.so.6
#1 0x00002ab86a81c934 in zif_session_encode () from
/usr/lib64/apache2/modules/libphp5.so
#2 0x00002ab86a81efc5 in php_session_start () from
/usr/lib64/apache2/modules/libphp5.so
#3 0x00002ab86a81f8b9 in zif_session_start () from
/usr/lib64/apache2/modules/libphp5.so
#4 0x00002ab86a975512 in execute () from
/usr/lib64/apache2/modules/libphp5.so
#5 0x00002ab86a9660d3 in execute () from
/usr/lib64/apache2/modules/libphp5.so
#6 0x00002ab86a94715d in zend_execute_scripts () from
/usr/lib64/apache2/modules/libphp5.so
#7 0x00002ab86a905b18 in php_execute_script () from
/usr/lib64/apache2/modules/libphp5.so
#8 0x00002ab86a9c5dbd in php_ap2_register_hook () from
/usr/lib64/apache2/modules/libphp5.so
#9 0x0000000000426d69 in ap_run_handler ()
#10 0x0000000000429c62 in ap_invoke_handler ()
#11 0x0000000000424d38 in ap_process_request ()
#12 0x000000000041fd30 in _start ()
--
Edit bug report at http://bugs.php.net/?id=42188&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=42188&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=42188&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=42188&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=42188&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=42188&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=42188&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=42188&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=42188&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=42188&r=support
Expected behavior: http://bugs.php.net/fix.php?id=42188&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=42188&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=42188&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=42188&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42188&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=42188&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=42188&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=42188&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=42188&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=42188&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=42188&r=mysqlcfg
