ID: 48754 Updated by: u...@php.net Reported By: busia at tiscali dot it Status: Verified Bug Type: MySQL related Operating System: * -PHP Version: 5.3.0 +PHP Version: 5.3.0 (as of 21-07-2008) Assigned To: mysql New Comment:
Really a great one. The bug exists since 21-07-2008. That is 11 months and 1 week ago. Sometimes I which users would try non-GA versions just in case test suites don't catch issues... This is when the bug was introduced: http://cvs.php.net/viewvc.cgi/php-src/ext/mysql/php_mysql.c?r1=1.213.2.6.2.16.2.22&r2=1.213.2.6.2.16.2.23&; mysql_link points to NULL and that's causing a crash. Possible workaround (as suggested by Johannes): nixn...@linux-en61:~/src/login/php5> cvs diff ext/mysql/tests/ cvs diff: Diffing . cvs diff: Diffing ext cvs diff: Diffing ext/mysql cvs diff: Diffing ext/mysql/tests nixn...@linux-en61:~/src/login/php5> cvs diff ext/mysql/ cvs diff: Diffing ext/mysql Index: ext/mysql/php_mysql.c =================================================================== RCS file: /repository/php-src/ext/mysql/php_mysql.c,v retrieving revision 1.213.2.6.2.16.2.37 diff -r1.213.2.6.2.16.2.37 php_mysql.c 372a373,376 > #ifdef MYSQL_USE_MYSQLND > mysqlnd_end_psession(link->conn); > #endif > 987,995c991 < #ifdef MYSQL_USE_MYSQLND < { < int tmp; < if ((mysql = zend_list_find(Z_RESVAL_P(mysql_link), &tmp)) && tmp == le_plink) { < mysqlnd_end_psession(mysql->conn); < } < } < #endif < if (mysql_link) { /* explicit resource number */ --- > if (mysql_link) { cvs diff: Diffing ext/mysql/tests Someone may want to review that. Previous Comments: ------------------------------------------------------------------------ [2009-07-02 13:05:17] u...@php.net This one is funny. It may have existed since more than one year now and nobody has ever found it. ------------------------------------------------------------------------ [2009-07-01 21:59:31] busia at tiscali dot it 1) The sleep function is not needed 2) The connection is successfull An other information: if I save in $a the mysql_connect return value and pass it to mysql_close php doesn't crash. In othe words this script works well: <? $a=mysql_connect('127.0.0.1', 'root', 'root'); mysql_close($a); ?> This instead crashes php: <? mysql_connect('127.0.0.1', 'root', 'root'); mysql_close(); ?> ------------------------------------------------------------------------ [2009-07-01 18:04:17] sjoerd-php at linuxonly dot nl Thank you for your bug report. I have a couple of questions regarding your bug report: 1. Is the sleep(2) needed to reproduce the bug? 2. Does the database connection succeed? (i.e. what is the return value of mysql_connect?) ------------------------------------------------------------------------ [2009-07-01 12:30:54] busia at tiscali dot it Description: ------------ This simple code crash php. This is the Debug diagnostic tool output: In php__PID__5128__Date__07_01_2009__Time_02_22_25PM__909__Second_Chance_Exception_C0000005.dmp the assembly instruction at php_mysql!zif_mysql_close+92 in C:\Program Files\PHP\ext\php_mysql.dll from The PHP Group has caused an access violation exception (0xC0000005) when trying to read from memory location 0x00000000 on thread 0 Report for php__PID__5128__Date__07_01_2009__Time_02_22_25PM__909__Second_Chance_Exception_C0000005.dmp Type of Analysis Performed Crash Analysis Machine Name PC-UTENTE Operating System Windows Vista Service Pack 1 Number Of Processors 2 Process ID 5128 Process Image C:\Program Files\PHP\php.exe System Up-Time 00:13:11 Process Up-Time 00:00:02 Thread 0 - System ID 5132 Entry point php!mainCRTStartup Create time 01/07/2009 14.22.23 Time spent in user mode 0 Days 0:0:0.31 Time spent in kernel mode 0 Days 0:0:0.62 Function Arg 1 Arg 2 Arg 3 Source php_mysql!zif_mysql_close+92 00000000 02a0d350 00000000 php5ts!zend_do_fcall_common_helper_SPEC+946 00000000 02a40070 00052fd0 php5ts!ZEND_DO_FCALL_SPEC_CONST_HANDLER+130 00c0fbd4 00052fd0 00c0fe70 php5ts!execute+29e 02a40070 00052f00 00000000 php5ts!zend_execute_scripts+f6 00000008 00052fd0 00000000 php5ts!php_execute_script+22d 00c0fe70 00052fd0 00000000 php!main+bf1 00000002 00052f68 00051888 php!mainCRTStartup+e3 7ffdb000 00c0ffd4 77bee4b6 kernel32!BaseThreadInitThunk+e 7ffdb000 770bbeaf 00000000 ntdll!__RtlUserThreadStart+23 00402d78 7ffdb000 00000000 ntdll!_RtlUserThreadStart+1b 00402d78 7ffdb000 00000000 PHP_MYSQL!ZIF_MYSQL_CLOSE+92In php__PID__5128__Date__07_01_2009__Time_02_22_25PM__909__Second_Chance_Exception_C0000005.dmp the assembly instruction at php_mysql!zif_mysql_close+92 in C:\Program Files\PHP\ext\php_mysql.dll from The PHP Group has caused an access violation exception (0xC0000005) when trying to read from memory location 0x00000000 on thread 0 Module Information Image Name: C:\Program Files\PHP\ext\php_mysql.dll Symbol Type: PDB Base address: 0x01c30000 Time Stamp: Mon Jun 29 22:24:49 2009 Checksum: 0x00000000 Comments: Thanks to Zeev Suraski, Zak Greant, Georg Richter COM DLL: False Company Name: The PHP Group ISAPIExtension: False File Description: MySQL ISAPIFilter: False File Version: 5.3.0 Managed DLL: False Internal Name: MYSQL extension VB DLL: False Legal Copyright: Copyright © 1997-2009 The PHP Group Loaded Image Name: php_mysql.dll Legal Trademarks: PHP Mapped Image Name: C:\Program Files\PHP\ext\php_mysql.dll Original filename: php_mysql.dll Module name: php_mysql Private Build: Single Threaded: False Product Name: PHP Module Size: 44,00 KBytes Product Version: 5.3.0 Symbol File Name: C:\Users\utente\Desktop\php-debug-pack-5.3.0-Win32-VC6-x86\php_mysql.pdb Special Build: & Reproduce code: --------------- <?php sleep(2); mysql_connect('127.0.0.1', 'root', 'root'); mysql_close(); ?> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=48754&edit=1
