ID: 49308 Updated by: u...@php.net Reported By: f4ckm5 at web dot de Status: Assigned Bug Type: MySQLi related Operating System: Windows Server 2003 SP2 32Bit PHP Version: 5.3, 6 (2009-08-22) Assigned To: mysql New Comment:
Well, do you have any tips in what to do with the trace? Sorry, but a reproducible case would be much more worth than the trace. Alternatively, is it possible to enable the mysqlnd trace? Previous Comments: ------------------------------------------------------------------------ [2009-08-29 15:31:34] f4ckm5 at web dot de Do you have any tips on how to find the respective lines of code in a 70000 lines of code project which eventually cause the crash? All i can see is the dying apache worker thread and the corresponding message in the system log. And it is very annoying, that this happens only on the productive system. No crashes on our development and test machines. I would gladly provide a test script. Just tell me where to start digging. ------------------------------------------------------------------------ [2009-08-26 15:38:34] u...@php.net Any chance to provide a test script? I know its hard, but its also hard to say anything based on the backtrace and without a reproducible test case. Thanks, Ulf ------------------------------------------------------------------------ [2009-08-21 09:31:38] f4ckm5 at web dot de I used the latest Snapshot 5.3.1-dev from Thu Aug 20 15:19:10 2009 The crashes became less frequent. Instead of 10 in 5 Minutes i caught only 5 in 3.5 hours. But the crashes still occur: ############################################################# Thread 250 - System ID 9828 Entry point msvcrt!_endthreadex+2f Create time 21.08.2009 09:11:23 Time spent in user mode 0 Days 0:0:0.171 Time spent in kernel mode 0 Days 0:0:0.78 Function Arg 1 Arg 2 Arg 3 Source php5ts!_zend_mm_free_int+139 056cf838 00050004 00720336 php5ts!_efree+36 012296e8 06894910 00725877 php5ts!_zval_ptr_dtor+66 068948e4 006ad310 06868980 php5ts!zend_hash_destroy+27 06876538 06868980 015a1665 php5ts!zend_object_std_dtor+2b 06868980 056ce490 06868980 php_mysqli!mysqli_objects_free_storage+25 06868980 056ce490 05a733e4 php_mysqli!mysqli_result_free_storage+28 06868980 056ce490 056ce490 php5ts!zend_objects_store_del_ref_by_handle_ex+1b6 0000002b 015b1600 056ce490 php5ts!zend_objects_store_del_ref+1e 06868960 056ce490 00000000 php5ts!_zval_dtor_func+76 06868960 00000000 05ab9050 php5ts!ZEND_ASSIGN_SPEC_CV_VAR_HANDLER+237 0546fbfc 056ce490 0546fe78 php5ts!execute+29e 05ab9050 056ce400 00000000 php5ts!zend_execute_scripts+f6 00000008 056ce490 00000000 php5ts!php_execute_script+22d 0546fe78 056ce490 00000003 php5apache2_2!php_handler+5d0 012c18b8 00615988 012c18b8 libhttpd!ap_run_handler+21 012c18b8 012c18b8 012c18b8 libhttpd!ap_invoke_handler+ae 00000000 012bc860 0546ff3c libhttpd!ap_die+29e 012c18b8 00000000 0065fb90 libhttpd!ap_get_request_note+1ccc 012bc860 012bc860 012bc860 libhttpd!ap_run_process_connection+21 012bc860 0062b108 0546ff84 libhttpd!ap_process_connection+33 012bc860 012b1820 00000000 libhttpd!ap_regkey_value_remove+c7c 012bc858 00000000 00000000 msvcrt!_endthreadex+a3 012a7d08 00000000 00000000 kernel32!BaseThreadStart+34 77b9b4bc 012a7d08 00000000 PHP5TS!_ZEND_MM_FREE_INT+139In httpd__PID__7192__Date__08_21_2009__Time_09_11_24AM__898__First chance exception 0XC0000005.dmp the assembly instruction at php5ts!_zend_mm_free_int+139 in C:\PHP\php5ts.dll from The PHP Group has caused an access violation exception (0xC0000005) when trying to read from memory location 0x02080174 on thread 250 Module Information Image Name: C:\PHP\php5ts.dll Symbol Type: PDB Base address: 0x006a0000 Time Stamp: Thu Aug 20 15:19:10 2009 Checksum: 0x00000000 Comments: COM DLL: False Company Name: The PHP Group ISAPIExtension: False File Description: PHP Script Interpreter ISAPIFilter: False File Version: 5.3.1-dev Managed DLL: False Internal Name: PHP Script Interpreter VB DLL: False Legal Copyright: Copyright © 1997-2009 The PHP Group Loaded Image Name: php5ts.dll Legal Trademarks: PHP Mapped Image Name: C:\PHP\php5ts.dll Original filename: php5ts.dll Module name: php5ts Private Build: Single Threaded: False Product Name: PHP Module Size: 5,45 MBytes Product Version: 5.3.1-dev Symbol File Name: C:\Dokumente und Einstellungen\Administrator.HML\Desktop\php-debug-pack-5.3-win32-VC6-x86-latest\php5ts.pdb Special Build: & ------------------------------------------------------------------------ [2009-08-20 09:53:08] j...@php.net Please try using this snapshot: http://snaps.php.net/php5.3-latest.tar.gz For Windows: http://windows.php.net/snapshots/ ------------------------------------------------------------------------ [2009-08-20 09:12:50] f4ckm5 at web dot de Description: ------------ PHP Crashes on Freeing Mysqli Result Storage. It happens randomly on our production machine, when the Server is under medium to heavy load. I did a Win32 backtrace and captured 10 crashes in merely 5 minutes, each causing the apache httpd.exe worker process to restart. Reproduce code: --------------- I happens randomly under greater server load. I could not pin the error to some lines of code. It happens with all the 5.3 builds I tested official 5.3.0 as well as latest snapshot. It does not happen with 5.2.x at all. Expected result: ---------------- No crash during mysqli_result_free_storage. Actual result: -------------- Thread 196 - System ID 2848 Entry point msvcrt!_endthreadex+2f Create time 20.08.2009 08:57:01 Time spent in user mode 0 Days 0:0:1.312 Time spent in kernel mode 0 Days 0:0:0.421 Function Arg 1 Arg 2 Arg 3 Source php5ts!_zend_mm_free_int+139 012d8bb0 00030004 0071ff46 php5ts!_efree+36 012293e8 08b3fc40 00725357 php5ts!_zval_ptr_dtor+66 05565ecc 006ad300 08b3fc20 php5ts!zend_hash_destroy+27 08b3fb98 08b3fc20 015a1665 php5ts!zend_object_std_dtor+2b 08b3fc20 012d7970 08b3fc20 php_mysqli!mysqli_objects_free_storage+25 08b3fc20 012d7970 055331cc php_mysqli!mysqli_result_free_storage+28 08b3fc20 012d7970 012d7970 php5ts!zend_objects_store_del_ref_by_handle_ex+1b6 0000001d 015b1600 012d7970 php5ts!zend_objects_store_del_ref+1e 0919f470 012d7970 00000000 php5ts!_zval_dtor_func+76 0919f470 091ac5af 007252a6 php5ts!_zval_ptr_dtor+5b 091ac594 012d7970 00000000 php5ts!zend_hash_del_key_or_index+1c6 0566ac60 05557a50 00000007 php5ts!ZEND_UNSET_VAR_SPEC_CV_HANDLER+6c 046efbfc 012d7970 046efe78 php5ts!execute+29e 05573a98 012d7900 00000000 php5ts!zend_execute_scripts+f6 00000008 012d7970 00000000 php5ts!php_execute_script+22d 046efe78 012d7970 00000003 php5apache2_2!php_handler+5d0 058b48c8 00615988 058b48c8 libhttpd!ap_run_handler+21 058b48c8 058b48c8 058b48c8 libhttpd!ap_invoke_handler+ae 00000000 056330d0 046eff3c libhttpd!ap_die+29e 058b48c8 00000000 0065fb90 libhttpd!ap_get_request_note+1ccc 056330d0 056330d0 056330d0 libhttpd!ap_run_process_connection+21 056330d0 0062b208 046eff84 libhttpd!ap_process_connection+33 056330d0 012cf9c0 00000000 libhttpd!ap_regkey_value_remove+c7c 056330c8 00000000 00000000 msvcrt!_endthreadex+a3 012a7358 00000000 00000000 kernel32!BaseThreadStart+34 77b9b4bc 012a7358 00000000 PHP5TS!_ZEND_MM_FREE_INT+139In httpd__PID__444__Date__08_20_2009__Time_08_57_29AM__615__First chance exception 0XC0000005.dmp the assembly instruction at php5ts!_zend_mm_free_int+139 in C:\PHP\php5ts.dll from The PHP Group has caused an access violation exception (0xC0000005) when trying to read from memory location 0x00000010 on thread 196 Module Information Image Name: C:\PHP\php5ts.dll Symbol Type: PDB Base address: 0x006a0000 Time Stamp: Mon Jun 29 22:24:07 2009 Checksum: 0x00000000 Comments: COM DLL: False Company Name: The PHP Group ISAPIExtension: False File Description: PHP Script Interpreter ISAPIFilter: False File Version: 5.3.0 Managed DLL: False Internal Name: PHP Script Interpreter VB DLL: False Legal Copyright: Copyright © 1997-2009 The PHP Group Loaded Image Name: php5ts.dll Legal Trademarks: PHP Mapped Image Name: Original filename: php5ts.dll Module name: php5ts Private Build: Single Threaded: False Product Name: PHP Module Size: 5,44 MBytes Product Version: 5.3.0 Symbol File Name: C:\Dokumente und Einstellungen\Administrator.HML\Desktop\php-debug-pack-5.3.0-Win32-VC6-x86\php5ts.pdb Special Build: & ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=49308&edit=1
