Bug #71613 [NEW]: nonblocking UDP stream_socket_recvfrom() memory leak

From: jnelson at archive dot org Operating system: Ubuntu PHP version: 5.5.32 Package: Performance problem Bug Type: Bug Bug description:nonblocking UDP stream_socket_recvfrom() memory leak Description: ------------ While coding a UDP server with stream_socket_recvfrom(), I found a memory leak when (a) the stream is set to nonblocking mode, (b) the optional $address reference is passed, and (c) no data is ready. If $address is not passed, there is no leak. It appears the leak only occurs if there's some traffic on the socket, meaning that this won't happen simply listening on a quiet port. I'm including two scripts, client.php and server.php, which must be run together for the server script to exhibit the leak. Test script: --------------- client.php: http://archive.org/~jnelson/client.php.txt server.php: http://archive.org/~jnelson/server.php.txt Expected result: ---------------- Expect memory usage to remain roughly the same for the duration of execution. Actual result: -------------- server.php's memory usage gradually increases over time, but only if $address is requested in the call to stream_socket_recvfrom(). -- Edit bug report at https://bugs.php.net/bug.php?id=71613&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71613&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71613&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71613&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71613&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71613&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71613&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71613&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71613&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71613&r=support Expected behavior: https://bugs.php.net/fix.php?id=71613&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71613&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71613&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71613&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71613&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71613&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71613&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71613&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71613&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71613&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71613&r=mysqlcfg