From: jfbustarret at tf1 dot fr
Operating system: Linux
PHP version: 5.0.5
PHP Bug Type: Reproducible crash
Bug description: Segmentation fault in shutdown_memory_manager
Description:
------------
Sometimes, some apache process segfault in shutdown_memory_manager.
Configuration : PHP 5.0.5/Linux/apache2
Reproduce code:
---------------
Unable to find the code that generates the segfault (the app is quite
large)
Actual result:
--------------
Backtrace :
#0 0x40662c45 in shutdown_memory_manager (silent=1, full_shutdown=0)
at /soft/sources/php/php-5.0.5/Zend/zend_alloc.c:485
485 for (j=0; j<AG(cache_count)[i]; j++) {
(gdb) bt
#0 0x40662c45 in shutdown_memory_manager (silent=1, full_shutdown=0)
at /soft/sources/php/php-5.0.5/Zend/zend_alloc.c:485
#1 0x40641b79 in php_request_shutdown (dummy=0x0)
at /soft/sources/php/php-5.0.5/main/main.c:1236
#2 0x406a5114 in php_handler (r=0x82e06e0)
at /soft/sources/php/php-5.0.5/sapi/apache2handler/sapi_apache2.c:436
(gdb) p alloc_globals.cache[i]
$2 = {0xb7179c38, 0xb7179c38, 0xb7179c38, 0xb7179c38, 0xb7179c38,
0xb7179c38,
0xb7179c38, 0xb7179c38, 0xb7179c38, 0x0 <repeats 247 times>}
[ same pointer, multiple times !!! ]
(gdb) p alloc_globals.cache[i][j]
$3 = (void *) 0xb7179c38
(gdb) p *(zend_mem_header*) alloc_globals.cache[i][j]
$5 = {pNext = 0x0, pLast = 0x65646f6d, size = 0, cached = 0}
I tried recompiling with enable-debug, and I get "Only variables can be
passed by reference" fatal errors in a function call that does not use
references :
httpRedirect($referer.$urlReconstruite);
The function prototype is :
function httpRedirect($url) {
I am unable to reproduce the crash with enable-debug activated.
configure is :
'./configure' '--with-apxs2=/usr/sbin/apxs2'
'--with-config-file-path=/etc' '--with-oci8' '--with-curl=/usr/lib'
'--with-gd=shared' '--with-jpeg-dir=/usr/lib' '--with-png-dir=/usr/lib'
'--with-freetype-dir=/usr/lib' '--enable-gd-native-ttf' '--with-zlib'
'--with-mcrypt=/usr/lib' '--with-dom' '--enable-sockets'
'--with-gmp=shared' '--without-pear' '--with-mysql=/usr'
'--with-mysql-sock=/tmp/mysql.sock' '--with-imagick-gm'
'--with-imagick=shared' 'CFLAGS=-O2 -g' '--with-snmp=shared'
'--enable-ftp=shared' '--enable-soap=shared' '--enable-debug'
I tried the latest snapshot, but it crashes while trying to load the main
php file.
--
Edit bug report at http://bugs.php.net/?id=35140&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=35140&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=35140&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=35140&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=35140&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=35140&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=35140&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=35140&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=35140&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=35140&r=support
Expected behavior: http://bugs.php.net/fix.php?id=35140&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=35140&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=35140&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=35140&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35140&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=35140&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=35140&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=35140&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=35140&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=35140&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=35140&r=mysqlcfg
