#43371 [Opn->Fbk]: Memory errors in PDO constructor

ID: 43371 Updated by: johannes@php.net Reported By: poletto at jeuxvideo dot com -Status: Open +Status: Feedback Bug Type: PDO related Operating System: Linux 2.4 PHP Version: 5.2.5 New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5.3-latest.tar.gz For Windows (zip): http://snaps.php.net/win32/php5.3-win32-latest.zip For Windows (installer): http://snaps.php.net/win32/php5.3-win32-installer-latest.msi Previous Comments: ------------------------------------------------------------------------ [2008-07-03 17:02:17] uw@php.net Can't reproduce with 5.3 CVS, PDO_MYSQLND and MySQL 5.0.51b-debug Source distribution. No matter if I use mysqlnd or libmysql. I haven't check PDO_MYSQL any more. However, PDOs management of persistent connections seems to be not perfect. I know of such an error: done![Thu Jul 3 18:59:39 2008] Script: 'ext/pdo_mysqlnd/tests/pdo_mysql_pconnect.php' /home/nixnutz/php53/ext/pdo/pdo_dbh.c(1514) : Freeing 0x06601898 (64 bytes), script=ext/pdo_mysqlnd/tests/pdo_mysql_pconnect.php /home/nixnutz/php53/Zend/zend_alloc.c(2374) : Actual location (location was relayed) Last leak repeated 21 times [Thu Jul 3 18:59:39 2008] Script: 'ext/pdo_mysqlnd/tests/pdo_mysql_pconnect.php' /home/nixnutz/php53/ext/pdo/pdo_dbh.c(1513) : Freeing 0x06602910 (72 bytes), script=ext/pdo_mysqlnd/tests/pdo_mysql_pconnect.php Last leak repeated 21 times === Total 44 memory leaks detected === ==12737== ==12737== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0) ------------------------------------------------------------------------ [2007-11-22 17:09:20] poletto at jeuxvideo dot com I can't try another version of mysql on this server. I noticed there was no error when removing the persistant connection ------------------------------------------------------------------------ [2007-11-22 16:40:09] iliaa@php.net It could be libmysqlclient related as you had suggested, can you try a different version perhaps? ------------------------------------------------------------------------ [2007-11-22 15:20:11] poletto at jeuxvideo dot com Same problem... Maybe a problem inside libmysqlclient? > valgrind -q /usr/local/src/php5.3-200711221330/sapi/cli/php test_pdo.php ==6951== Invalid read of size 4 ==6951== at 0x40B29BD: my_strdup (in /usr/local/MySQL-5.0.45/lib/libmysqlclient.so.15) ==6951== by 0x40D61D5: mysql_real_connect (in /usr/local/MySQL-5.0.45/lib/libmysqlclient.so.15) ==6951== by 0x80F97AC: pdo_mysql_handle_factory (mysql_driver.c:553) ==6951== by 0x80F0BE2: zim_PDO_dbh_constructor (pdo_dbh.c:372) ==6951== by 0x82380AA: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:191) ==6951== by 0x823790C: execute (zend_vm_execute.h:87) ==6951== by 0x822019C: zend_execute_scripts (zend.c:1139) ==6951== by 0x81E959B: php_execute_script (main.c:2008) ==6951== by 0x8280E39: main (php_cli.c:1140) ==6951== Address 0x470E900 is 8 bytes inside a block of size 9 alloc'd ==6951== at 0x401A826: malloc (vg_replace_malloc.c:149) ==6951== by 0x449A33F: strdup (in /lib/i686/libc-2.3.2.so) ==6951== by 0x80F0ABD: zim_PDO_dbh_constructor (pdo_dbh.c:358) ==6951== by 0x82380AA: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:191) ==6951== by 0x823790C: execute (zend_vm_execute.h:87) ==6951== by 0x822019C: zend_execute_scripts (zend.c:1139) ==6951== by 0x81E959B: php_execute_script (main.c:2008) ==6951== by 0x8280E39: main (php_cli.c:1140) ==6951== ==6951== Invalid read of size 4 ==6951== at 0x40B1BC2: scramble (in /usr/local/MySQL-5.0.45/lib/libmysqlclient.so.15) ==6951== by 0x40D654D: mysql_real_connect (in /usr/local/MySQL-5.0.45/lib/libmysqlclient.so.15) ==6951== by 0x80F97AC: pdo_mysql_handle_factory (mysql_driver.c:553) ==6951== by 0x80F0BE2: zim_PDO_dbh_constructor (pdo_dbh.c:372) ==6951== by 0x82380AA: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:191) ==6951== by 0x823790C: execute (zend_vm_execute.h:87) ==6951== by 0x822019C: zend_execute_scripts (zend.c:1139) ==6951== by 0x81E959B: php_execute_script (main.c:2008) ==6951== by 0x8280E39: main (php_cli.c:1140) ==6951== Address 0x470E900 is 8 bytes inside a block of size 9 alloc'd ==6951== at 0x401A826: malloc (vg_replace_malloc.c:149) ==6951== by 0x449A33F: strdup (in /lib/i686/libc-2.3.2.so) ==6951== by 0x80F0ABD: zim_PDO_dbh_constructor (pdo_dbh.c:358) ==6951== by 0x82380AA: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:191) ==6951== by 0x823790C: execute (zend_vm_execute.h:87) ==6951== by 0x822019C: zend_execute_scripts (zend.c:1139) ==6951== by 0x81E959B: php_execute_script (main.c:2008) ==6951== by 0x8280E39: main (php_cli.c:1140) ==6951== ==6951== Invalid read of size 4 ==6951== at 0x40B15E1: scramble_323 (in /usr/local/MySQL-5.0.45/lib/libmysqlclient.so.15) ==6951== by 0x40D66F3: mysql_real_connect (in /usr/local/MySQL-5.0.45/lib/libmysqlclient.so.15) ==6951== by 0x80F97AC: pdo_mysql_handle_factory (mysql_driver.c:553) ==6951== by 0x80F0BE2: zim_PDO_dbh_constructor (pdo_dbh.c:372) ==6951== by 0x82380AA: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:191) ==6951== by 0x823790C: execute (zend_vm_execute.h:87) ==6951== by 0x822019C: zend_execute_scripts (zend.c:1139) ==6951== by 0x81E959B: php_execute_script (main.c:2008) ==6951== by 0x8280E39: main (php_cli.c:1140) ==6951== Address 0x470E900 is 8 bytes inside a block of size 9 alloc'd ==6951== at 0x401A826: malloc (vg_replace_malloc.c:149) ==6951== by 0x449A33F: strdup (in /lib/i686/libc-2.3.2.so) ==6951== by 0x80F0ABD: zim_PDO_dbh_constructor (pdo_dbh.c:358) ==6951== by 0x82380AA: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:191) ==6951== by 0x823790C: execute (zend_vm_execute.h:87) ==6951== by 0x822019C: zend_execute_scripts (zend.c:1139) ==6951== by 0x81E959B: php_execute_script (main.c:2008) ==6951== by 0x8280E39: main (php_cli.c:1140) ------------------------------------------------------------------------ [2007-11-22 14:57:21] iliaa@php.net Please try using this CVS snapshot: http://snaps.php.net/php5.3-latest.tar.gz For Windows (zip): http://snaps.php.net/win32/php5.3-win32-latest.zip For Windows (installer): http://snaps.php.net/win32/php5.3-win32-installer-latest.msi I've tried to replicate the problem, but for me valgrind reports no errors. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. 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