Bug #75946 [NEW]: session_start() fails after fastcgi_finish_request() (FPM)

From: rafal dot janiczek at gmail dot com Operating system: Linux PHP version: 7.1.14 Package: Session related Bug Type: Bug Bug description:session_start() fails after fastcgi_finish_request() (FPM) Description: ------------ Not affected: php 7.0.x Affected: php7.1.x (tested .14) and php7.2.x (tested .2) Test script: --------------- <?php session_start(); echo session_id()."\n"; $_SESSION['test'] = 1; echo "stop session\n"; session_write_close(); fastcgi_finish_request(); session_start(); $_SESSION['test'] = 2; session_write_close(); $status = session_start(); if ($status) file_put_contents("sesstest.log", date("Y-m-d")." OK ".$_SESSION['test']." ".session_id()); else file_put_contents("sesstest.log", date("Y-m-d")." ERR ".$_SESSION['test']." ".session_id()); Expected result: ---------------- string "OK 2" in sesstest.log Actual result: -------------- string "ERR 1" in sesstest.log -- Edit bug report at https://bugs.php.net/bug.php?id=75946&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75946&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75946&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75946&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75946&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75946&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75946&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75946&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75946&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75946&r=support Expected behavior: https://bugs.php.net/fix.php?id=75946&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75946&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75946&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75946&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75946&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75946&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75946&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75946&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75946&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75946&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75946&r=mysqlcfg