php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #39132 integer overflow in memory_limit with memory >= 2GB.
Submitted: 2006-10-12 03:17 UTC Modified: 2006-10-20 01:00 UTC
Votes:14
Avg. Score:4.5 ± 0.7
Reproduced:13 of 13 (100.0%)
Same Version:9 (69.2%)
Same OS:8 (61.5%)
From: php at vicaya dot com Assigned:
Status: No Feedback Package: Unknown/Other Function
PHP Version: 5.1.6 OS: Linux 64-bit
Private report: No CVE-ID: None
View Add Comment Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If this is not your bug, you can add a comment by following this link.
If this is your bug, but you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: php at vicaya dot com
New email:
PHP Version: OS:

 

 [2006-10-12 03:17 UTC] php at vicaya dot com 
Description:
------------
Looks like memory_limit is kept using a 32-bit signed integer even with php compiled on 64-bit Linux.

Reproduce code:
---------------
set memory_limit to -1 or >= 2048M

<?= count(file("a_big_file")) ?>

Expected result:
----------------
number of lines in "a_big_file".

Actual result:
--------------
"Integer overflow in memory_limit check detected"

Patches

Add a Patch

Pull Requests

Add a Pull Request

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2006-10-12 08:05 UTC] derick@php.net 
Yes, it's using a size_t which AFAIK is limited to 32bit on most systems.
 [2006-10-12 09:57 UTC] tony2001@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.2-win32-latest.zip
 [2006-10-20 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2008-01-27 13:55 UTC] vadim at vadiaz dot com 
same behavior on 5.2.5
setting memory_limit to 4096M result in almost any script produce following error:

Allowed memory size of 
262144 bytes exhausted

262144 == 0x40000

I put 4000000000 in php.ini and it looks like it work now
so parsing '4096M' does produce memory_limit 4Gb
 [2016-01-25 14:08 UTC] mg at artigo dot pl 
Same issue on 5.6.14 64 bit + Apache 64 bit + Windows 64 bit.
Can't set "4096M", getting:
PHP Fatal error:  Allowed memory size of 262144 bytes exhausted
 
PHP Copyright © 2001-2024 The PHP Group
All rights reserved. 		Last updated: Fri Apr 19 04:01:28 2024 UTC