Bug #73039 [NEW]: Temporary files not being cleaned up when shell_exec called

From: chu_man_fu at hotmail dot com Operating system: Windows Server 2012 R2 PHP version: 5.6.25 Package: Streams related Bug Type: Bug Bug description:Temporary files not being cleaned up when shell_exec called Description: ------------ I have noticed the temp directory on the web server is full of files named php*.tmp. The contents of these files is POST data for various ajax calls (mainly the same group of calls). There isn't a temp file per call. If I watch the directoy I can see most temp files appear and then get deleted. However, for whatever reason, sometimes these files are not cleaned up. The only way I have been able to reproduce this error is using apache bench to post data (26KB) to a script which uses the shell_exec, exec, popen command: <?php shell_exec("dir"); echo "FINISHED"; ?> It will only produce the temp file when there is concurrency and lots of requests for each: ab -p <post_data_file> -c 3 -n 30 <url_to_script> Our system does perform calls to popen() but the POST data temp files which are being left behind are not always for calls which invoke this function. I can produce the issue on 5.6.24 and 5.6.25. I have tried on the following versions and not been able to reproduce it: 5.4.44, 5.5.25, 7.1 I not beein able to reproduce the issue on a Mac running 5.6.18. -- Edit bug report at https://bugs.php.net/bug.php?id=73039&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73039&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73039&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73039&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73039&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73039&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73039&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73039&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73039&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73039&r=support Expected behavior: https://bugs.php.net/fix.php?id=73039&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73039&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73039&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73039&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73039&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73039&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73039&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73039&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73039&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73039&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73039&r=mysqlcfg