Bug #10832: memory overruns in php_rshutdown_session_globals
| From: | wez@php.net | Date: | Sat, 12 May 2001 20:38:19 +0000 |
| Subject: | Bug #10832: memory overruns in php_rshutdown_session_globals | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-55035@lists.php.net to get a copy of this message | ||
From: wez@php.net
Operating system: SuSE 7.0 i386
PHP version: 4.0 Latest CVS (2001-05-12)
PHP Bug Type: *Session related
Bug description: memory overruns in php_rshutdown_session_globals
I'm really puzzled by this one; at first I thought it was a bug in my extension, but after
running apache under gdb I found the problem in the sessions module.
It's hard to describe and I can't reproduce it with a simple script :-(
During the call to php_rshutdown_session_globals, zend reports a memory overrun while calling
zend_hash_destroy(&PS(vars));
Sometimes it's a little overrun, but other times it's enough to segfault.
I'm using a user level session handler which works against mysql. I tried switching to mm but
I get a segfault every time when using mm :-(
I believe this is the cause of the random "loss" of a session variable that I mentioned
last week on php-dev.
I have no idea what's causing it; if there is anything I can provide to help, let me know.
My configure line is:
"./configure" \
"--with-apxs" \
"--disable-pear" \
"--enable-debug" \
"--enable-sigchild" \
"--enable-calendar" \
"--enable-ftp" \
"--with-ldap" \
"--with-mysql=/usr" \
"--enable-shmop" \
"--enable-sysvsem" \
"--enable-sysvshm" \
"--with-zlib" \
"--enable-inline-optimization" \
"--with-iconv" \
"--with-bz2" \
"--with-openssl" \
"--enable-bcmath" \
"--enable-ctype" \
"--with-imap" \
"--with-pspell" \
"--enable-yp" \
"--with-jpeg-dir" \
"--with-png-dir" \
"--with-freetype-dir" \
"--with-gd" \
"--with-mhash" \
"--enable-mailparse" \
"--enable-mbstring" \
"--with-cybercash=/usr/local/mck-3.2.0.3-linux" \
"--with-savi=/home/CLIENTWEB/sophosantivirus/sav_if" \
"--enable-php-streams" \
"--enable-mbregex" \
"--enable-memory-usage-info" \
"$@"
(The non-standard extensions are not being used in the scripts with problems).
I've removed mm support from my build because it didn't help at all.
--Wez.
--
Edit Bug report at: http://bugs.php.net/?id=10832&edit=1