#32508 [Fbk->Opn]: ob_gzhandler w/ chunking can crash Apache 2

ID: 32508 User updated by: myronwu at gmail dot com Reported By: myronwu at gmail dot com -Status: Feedback +Status: Open Bug Type: Output Control -Operating System: Linux 2.4 +Operating System: Linux 2.4 + Mac OS X PHP Version: 5.0.3 New Comment: Pretty convinced this occurs whenever chunking occurs, irrespective of what the chunk size is. Setting it to something silly like 1 also has the same problem, for example. I also confirmed again the same behaviour on a Mac OS X (10.3.8) machine, with its default php 4.3.10 setup over Apache 1.3.33, zlib 1.1.4. Configure command is just what's default on os x, but if you don't have an os x machine handy, it's: '/SourceCache/apache_mod_php/apache_mod_php-17.5/php/ configure' '--prefix=/usr' '--mandir=/usr/share/man' '-- infodir=/usr/share/info' '--with-apxs' '--with-ldap=/ usr' '--with-kerberos=/usr' '--enable-cli' '--with-zlib- dir=/usr' '--enable-trans-sid' '--with-xml' '--enable- exif' '--enable-ftp' '--enable-mbstring' '--enable- mbregex' '--enable-dbx' '--enable-sockets' '--with- iodbc=/usr' '--with-curl=/usr' '--with-config-file- path=/etc' '--sysconfdir=/private/etc' The php.ini is untouched from defaults. Previous Comments: ------------------------------------------------------------------------ [2005-03-31 09:34:17] sniper@php.net You can always make the chunk size smaller than 2048? Or doesn't this problem occur then? ------------------------------------------------------------------------ [2005-03-31 08:33:29] myronwu at gmail dot com Sorry, it's my sysadmin that set up those configure variables.... Anyway, we used phpinfo() for example code because it outputs something larger than the example chunk size I was using of 2048 bytes. I could manually write out more than 2048, but that probably wouldn't be as concise for bug reporting. The problem we have specifically arises when the ob_gzhandler attempts to send out chunks. ------------------------------------------------------------------------ [2005-03-31 08:20:56] sniper@php.net Does it only happen when you have phpinfo() in there? (I'd put something else between there..) Also, try doing ./configure --help sometimes. You have several options used that don't even exist. Like --enable-track-vars, --with-apache2.. ------------------------------------------------------------------------ [2005-03-31 02:15:34] myronwu at gmail dot com Reconfirmed the bug using the reproduce code on CVS snapshot php5-STABLE-200503302230, configure command: './configure' '--with-mysqli=/usr/local/mysql/bin/mysql_config' '--with-mysql=/usr/local/mysql' '--with-apache2=/usr/src/apache/httpd-2.0.53' '--enable-yp' '--enable-track-vars' '--with-zlib' '--with-jpeg' '--with-png' '--with-tiff' '--with-pdflib' '--with-gd' '--with-apxs2=/var/www/bin/apxs' '--with-gettext' '--with-pspell' Otherwise same setup as reported above. ------------------------------------------------------------------------ [2005-03-30 22:44:12] tony2001@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.0-win32-latest.zip ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/32508 -- Edit this bug report at http://bugs.php.net/?id=32508&edit=1