Bug #50966 [Opn]: Some resource leak (odbc_connect and odbc_close) using dbase or Microsoft Acces

Edit report at https://bugs.php.net/bug.php?id=50966&edit=1 ID: 50966 Updated by: bukka@php.net Reported by: gg dot cwlee at gmail dot com Summary: Some resource leak (odbc_connect and odbc_close) using dbase or Microsoft Acces Status: Open Type: Bug -Package: OpenSSL related +Package: cURL related Operating System: Windows XP PHP Version: 5.2.12 Block user comment: N Private report: N New Comment: I don't see how this is OpenSSL ext related. It seems like curl ext issue to me. Previous Comments: ------------------------------------------------------------------------ [2020-08-11 13:24:24] cmb@php.net Apparently, we're still using CRYPTO_set_id_callback() and friends[1], although that API is deprecated as of OpenSSL 1.0.0 in favor of CRYPTO_THREADID_set_callback()[2]. [1] <https://github.com/php/php-src/blob/php-8.0.0beta1/ext/curl/interface.c#L1169-L1182> [2] <https://www.openssl.org/docs/man1.0.2/man3/CRYPTO_THREADID_set_callback.html> ------------------------------------------------------------------------ [2010-02-10 12:21:10] gg dot cwlee at gmail dot com We identify the problem is within php_curl.dll. We are using PHP v5.2.12, and find that all newer PHP versions have this problem. We have to backtrack to the older PHP v5.2.0 before this problem disappears. The problem source code: PHP v5.2.12 ext\curl\interface.c Line 670 #ifdef PHP_CURL_NEED_OPENSSL_TSL if (!CRYPTO_get_id_callback()) { int i, c = CRYPTO_num_locks(); php_curl_openssl_tsl = malloc(c * sizeof(MUTEX_T)); PHP v5.2.0 ext\curl\interface.c Line 609 #ifdef PHP_CURL_NEED_OPENSSL_TSL { int i, c = CRYPTO_num_locks(); php_curl_openssl_tsl = malloc(c * sizeof(MUTEX_T)); The only difference is the if statement: if (!CRYPTO_get_id_callback()) ------------------------------------------------------------------------ [2010-02-08 11:19:30] gg dot cwlee at gmail dot com Description: ------------ We have a resource leak problem when using Apache 2.2.11 and PHP 5.2.12 with odbc_connect() and odbc_close() functions on dbase or Microsoft Access. From my observe, it will leak some (Nonpaged) kernel Memory and some handles not free by the Apache(HTTPD.EXE). And I also tested no this resource leak problem on Apache 2.2.11 and PHP 5.2.0. Thanks. Chris Reproduce code: --------------- <?php $dsnMDB = "DRIVER=Microsoft Access Driver (*.mdb);UID=admin;UserCommitSync=Yes;Threads=3;SafeTransactions=0;PageTimeout=5;MaxScanRows=8;MaxBufferSize=2048;FIL=MS Access;DriverId=25;DefaultDir=D:\;DBQ=D:\db1.mdb;"; $dsnDBF = "DRIVER=Microsoft dBase Driver (*.dbf);UID=admin;UserCommitSync=Yes;Threads=3;Statistics=0;SafeTransactions=0;PageTimeout=5;MaxScanRows=8;MaxBufferSize=2048;FIL=dBase IV;DriverId=277;Deleted=1;DefaultDir=D:\;DBQ=D:\datasource\;CollatingSequence=ASCII;"; $dsn= $dsnDBF; $userDB=odbc_connect($dsn,"",""); odbc_close($userDB); ?> ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=50966&edit=1