Bug #79928 [NEW]: fastcgi_finish_request() doesn't finish request

From: vedad at kajtaz dot net Operating system: FreeBSD 12.1-RELEASE PHP version: 7.4.8 Package: FPM related Bug Type: Bug Bug description:fastcgi_finish_request() doesn't finish request Description: ------------ Hi, I have a FPM (unix socket) + nginx setup. I have a couple of scripts, invoked from cron through nginx, that are designed to run lengthy tasks. The very first thing these scripts do is to invoke fastcgi_finish_request() (after going through some routing logic). They don't produce any output, neither before nor after invoking fastcgi_finish_request(). I did try writing to stdout and/or seanding headers before the call, the behavior remains the same. Seldomly (roughly one request out of 10), FPM doesn't seem to notify nginx, which results in nginx reporting a timeout (which is configured to 30 seconds): 2020/08/03 18:38:33 [error] 82940#103032: *41412 upstream timed out (60: Operation timed out) while reading response header from upstream, client: XX.XXX.XXX.XXX, server: XXXXXXXXX.XXXXXXXXXX.com, request: "GET /cron/XXXXXXXXXX HTTP/1.1", upstream: "fastcgi://unix:/tmp/XXXXXXXXX.sock", host: "XXXXXXXXX.XXXXXXXXXX.com" Even when the 30 seconds timeout is not reached, I see instances of scripts running for more that a couple of milliseconds one would except when fastcgi_finish_request() is invoked straight away (first column = response time in seconds): 0.001 XX.XXX.XXX.XXX - - [04/Aug/2020:14:34:17 +0200] "GET /cron/XXXXXXXXXX HTTP/1.1" 200 5 "-" "cron" 17.253 XX.XXX.XXX.XXX - - [04/Aug/2020:14:34:17 +0200] "GET /cron/XXXXXXXXXX HTTP/1.1" 200 5 "-" "cron" I have no idea where to start to try debugging this issue. Any ideas? -- Edit bug report at https://bugs.php.net/bug.php?id=79928&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79928&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79928&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79928&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79928&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79928&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79928&r=support Expected behavior: https://bugs.php.net/fix.php?id=79928&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79928&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79928&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79928&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79928&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79928&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79928&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79928&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79928&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79928&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79928&r=mysqlcfg