Bug #55414 [NEW]: Segmentation fault with MySQLi_Result::fetch_fields()

From: Operating system: CentOS release 5.6 (Final) PHP version: 5.3.6 Package: MySQLi related Bug Type: Bug Bug description:Segmentation fault with MySQLi_Result::fetch_fields() Description: ------------ A segmentation fault is occurring for us when the following is done: -Run SHOW ENGINES as a prepared statement -Call MySQLi_STMT::fetch_metadata() -Call MySQLi_Result::fetch_fields() on the result. This is using the Zend Framework (Zend_Db_Adapter_Mysql), however the test script below successfully replicated the segfault. We have had at least 30 people with the issue (we sell a PHP script), out of maybe a thousand or so. Unfortunately, this isn't my server, so I can't include a backtrace. Here is someone else having a similar problem with SHOW CREATE TABLE: http://stackoverflow.com/questions/6769515/php-programming-seg-fault PHP Version => 5.3.6 Configure Command => './configure' '--disable-fileinfo' '--enable-bcmath' '-- enable-calendar' '--enable-exif' '--enable-ftp' '--enable-gd-native-ttf' '-- enable-libxml' '--enable-magic-quotes' '--enable-mbstring' '--enable-pdo=shared' '--enable-sockets' '--enable-zend-multibyte' '--enable-zip' '-- prefix=/usr/local' '--with-apxs2=/usr/local/apache/bin/apxs' '--with-bz2' '-- with-curl=/opt/curlssl/' '--with-curlwrappers' '--with-freetype-dir=/usr' '-- with-gd' '--with-gettext' '--with-imap=/opt/php_with_imap_client/' '--with-imap- ssl=/usr' '--with-jpeg-dir=/usr' '--with-kerberos' '--with-libdir=lib64' '-- with-libexpat-dir=/usr' '--with-libxml-dir=/opt/xml2/' '--with- mcrypt=/opt/libmcrypt/' '--with-mm=/opt/mm/' '--with-mysql=/usr' '--with-mysql- sock=/var/lib/mysql/mysql.sock' '--with-mysqli=/usr/bin/mysql_config' '--with- openssl=/usr' '--with-openssl-dir=/usr' '--with-pcre-regex=/opt/pcre' '--with- pdo-mysql=shared' '--with-pdo-sqlite=shared' '--with-pic' '--with-png-dir=/usr' '--with-pspell' '--with-sqlite=shared' '--with-tidy=/opt/tidy/' '--with-xmlrpc' '--with-xpm-dir=/usr' '--with-xsl=/opt/xslt/' '--with-zlib' '--with-zlib- dir=/usr' mysqli MysqlI Support => enabled Client API library version => 5.0.92 Active Persistent Links => 0 Inactive Persistent Links => 0 Active Links => 0 Client API header version => 5.0.92 MYSQLI_SOCKET => /var/lib/mysql/mysql.sock Directive => Local Value => Master Value mysqli.allow_local_infile => On => On mysqli.allow_persistent => On => On mysqli.default_host => no value => no value mysqli.default_port => 3306 => 3306 mysqli.default_pw => no value => no value mysqli.default_socket => /var/lib/mysql/mysql.sock => /var/lib/mysql/mysql.sock mysqli.default_user => no value => no value mysqli.max_links => Unlimited => Unlimited mysqli.max_persistent => Unlimited => Unlimited mysqli.reconnect => Off => Off +-----------------------------------------+------------------------------------- -------------+ | Variable_name | Value | +-----------------------------------------+------------------------------------- -------------+ | version | 5.0.92-community | | version_comment | MySQL Community Edition (GPL) | +-----------------------------------------+------------------------------------- -------------+ Linux ***** 2.6.18-***** #1 SMP Wed Jan 5 17:52:25 EST 2011 x86_64 x86_64 x86_64 GNU/Linux Test script: --------------- $mysqli = new mysqli($host, $username, $password, $dbname); $stmt = $mysqli->prepare('SHOW ENGINES'); $stmt->execute(); $stmt->bind_result($engine, $support, $comment); $meta = $stmt->result_metadata(); $meta->fetch_fields(); $stmt->close(); $mysqli->close(); -- Edit bug report at https://bugs.php.net/bug.php?id=55414&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=55414&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=55414&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=55414&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=55414&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=55414&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=55414&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=55414&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=55414&r=needscript Try newer version: https://bugs.php.net/fix.php?id=55414&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=55414&r=support Expected behavior: https://bugs.php.net/fix.php?id=55414&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=55414&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=55414&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=55414&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=55414&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=55414&r=dst IIS Stability: https://bugs.php.net/fix.php?id=55414&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=55414&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=55414&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=55414&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=55414&r=mysqlcfg