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Bug #76746 tried to allocate gigantic amount of memory
Submitted: 2018-08-15 07:55 UTC Modified: 2020-11-01 04:22 UTC
From: mschopdev at gmail dot com Assigned: cmb (profile)
Status: No Feedback Package: *General Issues
PHP Version: 7.0.31 OS: Windows-Ubuntu 18.04 Sub System
Private report: No CVE-ID: None
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 [2018-08-15 07:55 UTC] mschopdev at gmail dot com
Description:
------------
I'm running Ubuntu 18.04 with ppa:ondrej/php in the Linux Sub-System under Windows.

PHP-Version: PHP 7.0.30-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: May  2 2018 12:44:20) ( NTS )

This is the error message:

Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 7526411575186646379 bytes) in /mnt/c/Projects/shop/engine/Library/Customweb/Annotation/ReflectionAnnotatedMethod.php on line 15

Unfortunatly I have not idea what caused the bug. A restart of the PHP7.0-fpm process solved the issue for me. The test script contains the script that caused the problem, but I have no idea, what the exact problem is.

I'm very sorry on this superficial bug report, but I have no further idea, how to reproduce this again. If I have further details, I will add them later.



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

require_once 'Customweb/Annotation/IAnnotationReflector.php';
require_once 'Customweb/Annotation/AnnotationsBuilder.php';
require_once 'Customweb/Annotation/ReflectionAnnotatedClass.php';


class Customweb_Annotation_ReflectionAnnotatedMethod extends ReflectionMethod implements Customweb_Annotation_IAnnotationReflector
{
    private
        $annotations;

    public function __construct($class, $name)
    {
        parent::__construct($class, $name); // This is the line, that caused the error
        
        $this->annotations = $this->createAnnotationBuilder()->build($this);
    }


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 [2018-08-15 10:46 UTC] a at b dot c dot de
That is a bizarre number.

Interestingly, in hex it's "68732F737463656B", the ASCII encoding for "hs/stcek" depending on endianness. Whether that helps I don't know. But if a character pointer were substituted for a pointer to an integer the result would be something like that.

Mind you, PHP 7.0 is in security-only fix at this point, so I doubt there'll be much energy expended on this.
 [2020-10-23 12:37 UTC] cmb@php.net
-Status: Open +Status: Feedback -Assigned To: +Assigned To: cmb
 [2020-10-23 12:37 UTC] cmb@php.net
Well, this has likely been caused by a memory corruption. Do you
still experience this with any of the actively supported PHP
versions[1]?

[1] <https://www.php.net/supported-versions.php>
 [2020-11-01 04:22 UTC] php-bugs at lists dot php dot net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
 
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