Bug #32574

FLOW3 enters fork bombs when using cgi-fcgi vs cli

Added by Jacob Floyd almost 10 years ago. Updated almost 10 years ago.

Should have
Target version:
Start date:
Due date:
% Done:


Estimated time:
PHP Version:
Has patch:


How I discovered the bug.

I installed FLOW3 (and Typo3 Phoenix) via git yesterday on my shared host. Everything worked fine on CLI including flow3:core:compile. But when I would hit the site via my browser, FLOW3 entered an endless loop of forking new processes (fork bomb) until the ulimit max number of processes (100) is reached, when it gave this error:

#1: Warning: system() [<a href='function.system'>function.system</a>]: Unable to fork [XDEBUG_CONFIG="idekey=FLOW3_SUBREQUEST" FLOW3_ROOTPATH='/home/cognifir/public_domains/TYPO3v5/' FLOW3_CONTEXT='Development' "/usr/bin/php" -c '/home/cognifir/.php/php.ini' '/home/cognifir/public_domains/TYPO3v5/Packages/Framework/TYPO3.FLOW3/Classes/Core/../../Scripts/flow3.php' 'typo3.flow3:core:compile'] in /home/cognifir/public_domains/TYPO3v5/Packages/Framework/TYPO3.FLOW3/Classes/Core/Booting/Scripts.php line 423

Occassionally I'd also get this error in the php5 error log:

[14-Dec-2011 13:14:22] PHP Fatal error: Out of memory (allocated 54263808) (tried to allocate 7680 bytes) in /home/cognifir/public_domains/TYPO3v5/Data/Temporary/Development/Cache/Code/Fluid_TemplateCache/typo3_template_fb28020226817cc1696e7cec37ba5786d3434e0e.php on line 65

However neither of these error messages are particularly helpful, they only point at two symptoms (1) running out of available processes (2) running out of available memory.

By running the command FLOW3 was trying to run I get the following Result:

$ XDEBUG_CONFIG="idekey=FLOW3_SUBREQUEST" FLOW3_ROOTPATH='/home/cognifir/public_domains/TYPO3v5/' FLOW3_CONTEXT='Development' 
"/usr/bin/php" -c '/home/cognifir/.php/php.ini' '/home/cognifir/public_domains/TYPO3v5/Packages/Framework/TYPO3.FLOW3/Classes/Core/../../Scripts/flow3.php' 

X-Powered-By: PHP/5.3.8
Content-type: text/html

The FLOW3 command line script or sub process was executed with a 'cgi-fcgi' PHP binary. Make sure that you specified a CLI capable PHP binary in your PATH or FLOW3's Settings.yaml.


To resolve this, I uncommented (as I wasn't using it before) and set phpBinaryPathAndFilename: '/user/local/bin/php' in Settings.yaml.

Next steps

  • I think it would be great to catch this error and exit with a useful exception/error message instead of entering the endless loop of spawning new flow3 processes over and over.
  • Also, a note in the manual about using phpBinaryPathAndFilename to point to the CLI php would be helpful. Also, this suggests that it is not just for Windows like the example Settings.yaml indicates.

Related issues

Related to TYPO3.Flow - Bug #30633: endless recursion when using the wrong php binaryResolvedRobert Lemke2011-10-07


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