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Bug #69995 Opcache no longer works
Submitted: 2015-07-05 00:29 UTC Modified: 2015-07-06 03:00 UTC
From: chx@php.net Assigned:
Status: Not a bug Package: opcache
PHP Version: 5.6.10 OS: Unix
Private report: No CVE-ID: None
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From: chx@php.net
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 [2015-07-05 00:29 UTC] chx@php.net 
Description:
------------
opcache seems broken, plain and simple. The INI settings are the same to PHP 5.5 where the test script worked.

PHP 5.6.10-1+deb.sury.org~trusty+1 (cli)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies

When strace'ing we have found that after the stat to test.php working versions issued 

fcntl(3, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=1}) = 0
fcntl(3, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=1}) = 0

where 

open("/tmp/.ZendSem.amvda2", O_RDWR|O_CREAT|O_EXCL, 0600) = 3

but this more seems a corollary than a cause, still I thought I'll mention it.

Test script:
---------------
<?php

var_dump(opcache_compile_file('test.php'));
var_dump(opcache_is_script_cached("test.php"));
$scripts = opcache_get_status(TRUE);
var_dump($scripts);
?>

test.php can be either empty or just <?php . It also broke https://www.drupal.org/files/issues/2513326_34.patch (but that's a hack) I got a report it working with 5.6.4; I haven't run the reproduction scripts with 5.6.4.

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 [2015-07-05 00:31 UTC] chx@php.net 
Sorry, I forgot to add

Expected

bool(true)
bool(true)

Instead we got

bool(true)
bool(false)
as
and it's not in the opcache_get_status dump either. Also, as I mentioned, https://www.drupal.org/files/issues/2513326_34.patch longer hits.
 [2015-07-05 02:34 UTC] ben at dougherty dot net dot au 
The sample script chx gave wasn't always broken/working for me but here is a minimalist version around the Drupal core patch he mentioned that never works: http://privatepaste.com/8904019d51

It's broken on:

PHP 5.6.10-1+deb.sury.org~trusty+1 (cli)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
    with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies

Here's a full strace: http://privatepaste.com/c28af303c2 and the php.ini settings: http://privatepaste.com/ce0c4bed5d

Works fine on:

PHP 5.5.9-1ubuntu4.9 (cli) (built: Apr 17 2015 11:44:57)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
    with Zend OPcache v7.0.3, Copyright (c) 1999-2014, by Zend Technologies
 [2015-07-06 03:00 UTC] chx@php.net
-Status: Open +Status: Not a bug
 [2015-07-06 03:00 UTC] chx@php.net 
Please ignore.
 
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