ID: 44645 Comment by: neil dot smith at coull dot com Reported By: gary dot wilson at coull dot biz Status: Open Bug Type: Reproducible crash Operating System: Windows Server 2003 PHP Version: 5.2.5 New Comment:
Correction to last statement : "Adding memcache caching of DB response resulted in non-repro" DB requests were not fully removed in the test harness code. With DB requests prevented, this bug is still repro under high request loads (so it not specifically MySQL / DB connection dependent). Fault address remains at 0x0000926a in php5ts.dll Previous Comments: ------------------------------------------------------------------------ [2008-06-03 16:11:02] neil dot smith at coull dot com The following should be a crash dump illustrating the problem. It was generated as per instructions "Generating backtrace without compiler" at http://bugs.php.net/bugs-generating-backtrace-win32.php Configuration : Apache/2.2.3 (Win32) PHP/5.2.5, WinXP SP3 The isue occurred during load testing using JMeter on a script which made moderate MySQL use and medium-heavy XML DOM node creation. Adding memcache caching of DB response resulted in non-repro, which IMO may indicate some involvement of number of DB connections or similar (running script threads between them had around 876 instances of DB connections in TCP 192.168.2.38:3061 192.168.2.15:3306 TIME_WAIT state) ====================== Follows ===================================== Analysis Summary Type Description Recommendation Error WARNING - DebugDiag was not able to locate debug symbols for php5ts.dll, so the information below may be incomplete. In httpd__PID__3584__Date__06_03_2008__Time_04_57_08PM__928__Second_Chance_Exception_C0000005.dmp the assembly instruction at php5ts!zend_mm_shutdown+f49 in C:\Applications\php5\php5ts.dll from The PHP Group has caused an access violation exception (0xC0000005) when trying to read from memory location 0x0000000c on thread 246 Please follow up with the vendor The PHP Group for C:\Applications\php5\php5ts.dll Information DebugDiag determined that this dump file (httpd__PID__3584__Date__06_03_2008__Time_04_57_08PM__928__Second_Chance_Exception_C0000005.dmp) is a crash dump and did not perform any hang analysis. If you wish to enable combined crash and hang analysis for crash dumps, edit the CrashHangAnalysis.asp script (located in the DebugDiag\Scripts folder) and set the g_DoCombinedAnalysis constant to True. Analysis Details Your browser settings are currently prohibiting this report's scripts from running. This is preventing some features of this analysis report from displaying properly. To enable scripts to run, right-click the security warning above and choose "Allow Blocked Content..." or enable the "Allow active content to run in files on My Computer*" setting on the Advanced tab of your "Internet Options" dialog to avoid being prompted in the future Table Of Contents httpd__PID__3584__Date__06_03_2008__Time_04_57_08PM__928__Second_Chance_Exception_C0000005.dmp Faulting Thread Faulting Module Information Report for httpd__PID__3584__Date__06_03_2008__Time_04_57_08PM__928__Second_Chance_Exception_C0000005.dmp Report for httpd__PID__3584__Date__06_03_2008__Time_04_57_08PM__928__Second_Chance_Exception_C0000005.dmp Type of Analysis Performed Crash Analysis Machine Name DEVBOX_NS Operating System Windows XP Service Pack 2 Number Of Processors 2 Process ID 3584 Process Image C:\Applications\Apache2.2\bin\httpd.exe System Up-Time 06:41:14 Process Up-Time 00:00:05 Thread 246 - System ID 3348 Entry point msvcrt!_endthreadex+3a Create time 03/06/2008 16:57:04 Time spent in user mode 0 Days 0:0:0.187 Time spent in kernel mode 0 Days 0:0:0.78 Function Arg 1 Arg 2 Arg 3 Source php5ts!zend_mm_shutdown+f49 058ab930 00030000 100b5f17 php5ts!efree+39 008ca860 069f8c4c 10095f13 php5ts!zval_dtor_func+27 008ca848 069f8c65 100993d3 php5ts!zval_ptr_dtor+23 069f8c4c 069f8a38 069f8bc0 php5ts!zend_hash_add_or_update+1b3 069f8be8 102c6940 00000005 php5ts!zend_reflection_class_factory+215d 06977098 05f72178 00000000 php5ts!zend_reflection_class_factory+204d 00000000 069f89d8 00000000 php5ts!execute_internal+37 0530f674 00000001 058aa688 php_xdebug_2_0_3_5_2_5!get_module+367c 0530f674 00000001 00000000 php5ts!execute+a37 0530f674 058aa688 1001c3e5 php5ts!execute+245 069d96d0 058aa688 0530f748 php_xdebug_2_0_3_5_2_5!get_module+27ff 069d96d0 058aa688 05f89340 php5ts!execute+b48 0530f748 058aa688 1001c3e5 php5ts!execute+245 05f89340 058aa688 0530f81c php_xdebug_2_0_3_5_2_5!get_module+27ff 05f89340 058aa688 05f8aea0 php5ts!execute+b48 0530f81c 058aa688 1001c3e5 php5ts!execute+245 05f8aea0 058aa688 0530f8f0 php_xdebug_2_0_3_5_2_5!get_module+27ff 05f8aea0 058aa688 05edebb0 php5ts!execute+b48 0530f8f0 058aa688 1001c3e5 php5ts!execute+245 05edebb0 058aa688 05f65d10 php_xdebug_2_0_3_5_2_5!get_module+27ff 05edebb0 058aa688 05a10d50 php5ts!execute+e3a8 104b4ce0 1001e005 05f61d78 php5ts!execute+1e33 05f43cb0 058aa688 0530faa8 php_xdebug_2_0_3_5_2_5!get_module+27ff 05f43cb0 058aa688 05ede848 php5ts!execute+b48 0530faa8 058aa688 1001c3e5 php5ts!execute+245 05ede848 058aa688 05ede5d0 php_xdebug_2_0_3_5_2_5!get_module+27ff 05ede848 058aa688 05a10ee0 php5ts!execute+7880 104b4ce0 1001e070 05ede2e0 php5ts!execute+1e33 05ede2e0 058aa688 00000000 php_xdebug_2_0_3_5_2_5!get_module+27ff 05ede2e0 058aa688 00000000 php5ts!zend_execute_scripts+107 00000000 00000000 00000000 PHP5TS!ZEND_MM_SHUTDOWN+F49WARNING - DebugDiag was not able to locate debug symbols for php5ts.dll, so the information below may be incomplete. In httpd__PID__3584__Date__06_03_2008__Time_04_57_08PM__928__Second_Chance_Exception_C0000005.dmp the assembly instruction at php5ts!zend_mm_shutdown+f49 in C:\Applications\php5\php5ts.dll from The PHP Group has caused an access violation exception (0xC0000005) when trying to read from memory location 0x0000000c on thread 246 Module Information Image Name: C:\Applications\php5\php5ts.dll Symbol Type: Export Base address: 0x10000000 Time Stamp: Fri Nov 09 04:18:32 2007 Checksum: 0x00000000 Comments: COM DLL: False Company Name: The PHP Group ISAPIExtension: False File Description: PHP Script Interpreter ISAPIFilter: False File Version: 5.2.5.5 Managed DLL: False Internal Name: php5ts.dll VB DLL: False Legal Copyright: Copyright © 1997-2007 The PHP Group Loaded Image Name: php5ts.dll Legal Trademarks: PHP Mapped Image Name: C:\Applications\php5\php5ts.dll Original filename: php5ts.dll Module name: php5ts Private Build: Single Threaded: False Product Name: PHP Script Interpreter Module Size: 4.86 MBytes Product Version: 5.2.5 Symbol File Name: php5ts.dll Special Build: & Script Summary Script Name Status Error Code Error Source Error Description Source Line CrashHangAnalysis.asp Completed ====================== Ends ====================================== ------------------------------------------------------------------------ [2008-05-26 14:16:35] gary dot wilson at coull dot biz Glad someone else found it, I have not gotten any feedback from our developers, hence php closed this bug. Interesting to see that you get this on a php connect to MySQL. Currently, having a wonderful time compiling php 5.2.6 on an CentOS 5.1 x86_64... grrr I hate working at the bleeding edge. Maybe that is why it is called the bleeding edge because you have to bleed to make it work. ------------------------------------------------------------------------ [2008-05-26 12:01:20] capsx at team dot lv edit: backtrace - Windows XP, Apache/2.2.8 (Win32), PHP/5.2.7-dev, mysql Ver 14.14 Distrib 5.1.24-rc, for Win32 (ia32) when calling: $this-> sql_db = mysql_select_db($this->database) ; http://manaspiezimes.lv/upload/66b75756905ec2ca33bf2cb92d2c6057.png ------------------------------------------------------------------------ [2008-05-26 11:53:56] capsx at team dot lv backtrace - Windows XP, Apache/2.2.8 (Win32), PHP/5.2.7-dev, mysql Ver 14.14 Distrib 5.1.24-rc, for Win32 (ia32) when calling: $this-> sql_db = mysql_select_db($this->database) ; http://manaspiezimes.lv/upload/2711733a396c7a305c84a5a38bdf623a.png ------------------------------------------------------------------------ [2008-05-26 01:00:02] php-bugs at lists dot php dot net No feedback was provided for this bug for over a week, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/44645 -- Edit this bug report at http://bugs.php.net/?id=44645&edit=1
