From: 37xzxz at gmail dot com Operating system: Win 7 x64 SP1, WinServ 2008 R2 PHP version: 5.4Git-2013-05-27 (snap) Package: Apache2 related Bug Type: Bug Bug description:Apache2 with php5apache2_4.dll crash when use get_browser()
Description: ------------ Tested on php-5.4.15-Win32-VC9-x86 and 5.4.17-dev snapshot (http://windows.php.net/downloads/snaps/php-5.4/rbcdac75/php-5.4-ts-windows-vc9- x86-rbcdac75.zip) Apache2 crashes when code contain get_browser() and script called multiply times in parallel. [mpm_winnt:notice] [pid 3684:tid 440] AH00428: Parent: child process 4032 exited with status 3221225477 -- Restarting. I perfom search in Google and find this http://stackoverflow.com/questions/1138269/apache-error-notice-parent-child- process-exited-with-status-3221225477-res pylon said: "I just figured it out that the get_browser() function gives a memory error sometimes". So I perfom tests part of code with get_browser() only and reproduce crashes. Test script: --------------- test.php contain code: <?php echo $_SERVER[ 'HTTP_USER_AGENT' ] . ' '. time() . "\n"; $browser = get_browser( $_SERVER[ 'HTTP_USER_AGENT' ] ); ?> test_get_browser.php on other server <?php set_time_limit( 0 ); $opts = array( 'http' => array( 'method' => "GET", 'header' => "User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31\r\n", ), ); $context = stream_context_create( $opts ); $url = 'http://testserver/test.php'; for( $i = 0; $i < 10000; $i++ ) { $data = file_get_contents( $url, false, $context ); echo $data; } ?> Run few copies of test_get_browser.php to emulate many clients. Expected result: ---------------- No crashes, all requests will be served normally. Actual result: -------------- Apache2 crashes when I call 2-7 copies of test_get_browser.php. Thread 11 - System ID 4556 Entry point libhttpd!ap_regkey_value_remove+1060 Create time 28.05.2013 11:02:43 Time spent in user mode 0 Days 0:0:0.62 Time spent in kernel mode 0 Days 0:0:0.0 Full Call Stack Function Arg 1 Arg 2 Arg 3 Arg 4 Source ntdll!NtRaiseException+12 0c58eeec 0c58ef3c 00000000 c0000005 ntdll!KiUserExceptionDispatcher+29 0c58eeec 0c58ef3c 00000000 c0000005 Exception Information PHP5TS!_ZVAL_PTR_DTOR+3C8In httpd__PID__9884__Date__05_28_2013__Time_11_02_44AM__426__Second_Chance_Exceptio n_C0000005.dmp the assembly instruction at php5ts!_zval_ptr_dtor+3c8 in C:\dev\php-5.4.15-Win32-VC9-x86\php5ts.dll from The PHP Group has caused an access violation exception (0xC0000005) when trying to read from memory location 0x0e6dc8a4 on thread 11 Same code work fine on Ubuntu 12.04, I can't find any errors in logs. -- Edit bug report at https://bugs.php.net/bug.php?id=64934&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=64934&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=64934&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=64934&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=64934&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=64934&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=64934&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=64934&r=needscript Try newer version: https://bugs.php.net/fix.php?id=64934&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=64934&r=support Expected behavior: https://bugs.php.net/fix.php?id=64934&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=64934&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=64934&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=64934&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64934&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=64934&r=dst IIS Stability: https://bugs.php.net/fix.php?id=64934&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=64934&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=64934&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=64934&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=64934&r=mysqlcfg
