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

go to bug id or search bugs for

Bug #38449 Segfault when token_get_all is used
Submitted: 2006-08-14 11:37 UTC Modified: 2006-08-23 17:59 UTC
From: scottmacvicar at ntlworld dot com Assigned:
Status: Not a bug Package: Reproducible crash
PHP Version: 4.4.3 OS: FreeBSD 4.10-RELEASE-p5
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: scottmacvicar at ntlworld dot com
New email:
PHP Version: OS:

 

 [2006-08-14 11:37 UTC] scottmacvicar at ntlworld dot com 
Description:
------------
Customer reported this issue and we've tracked it down to a segfault within token_get_all, we can't reproduce it on Linux or Windows but can on FreeBSD.

php -v
PHP 4.4.3 (cli) (built: Aug 14 2006 04:34:25)
Copyright (c) 1997-2006 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies

Reproduce code:
---------------
<?php
$tokens = token_get_all('<?php $var = 2; ?>');
var_dump($tokens);
?>

Expected result:
----------------
Some output

Actual result:
--------------
Program received signal SIGSEGV, Segmentation fault.
0x80d216d in _efree ()
(gdb) bt
#0  0x80d216d in _efree ()
#1  0x80de408 in _zval_dtor ()
#2  0x4861f8e6 in tokenize () from /usr/local/lib/php/20020429/tokenizer.so
#3  0x48620041 in zif_token_get_all () from /usr/local/lib/php/20020429/tokenizer.so
#4  0x80f14bb in execute ()
#5  0x80df699 in zend_execute_scripts ()
#6  0x80ba79f in php_execute_script ()
#7  0x80f8241 in main ()
#8  0x805cf86 in _start ()

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2006-08-14 12:05 UTC] tony2001@php.net 
Works just fine on Linux and FreeBSD 5.4-RELEASE.
 [2006-08-14 15:44 UTC] scottmacvicar at ntlworld dot com 
I edited the ports Makefile to add --enable-tokenizer and removed the tokenizer as an extension and there was no crash.

I tried a similar setup on my debian box following the same procedure with tokenizer as an extension and had no problem. I'm going to look a little closer later on and see if I can identify what in particular is causing this on the FreeBSD box.
 [2006-08-14 15:44 UTC] scottmacvicar at ntlworld dot com 
Can someone mark this awaiting feedback again.
 [2006-08-14 17:24 UTC] tony2001@php.net 
Please reopen when/if you can add more info.
Thank you.
 [2006-08-23 17:53 UTC] scottmacvicar at ntlworld dot com 
We've had another customer report regarding this issue on a completely different server, same back trace but this time using PHP 4.4.2 and 4.11-RELEASE-p19

Is there anyway to produce more information that might help track this down?

The configure line is:
'./configure' '--enable-versioning' '--enable-memory-limit' '--with-layout=GNU' '--with-config-file-scan-dir=/usr/local/etc/php' '--disable-all' '--with-regex=php' '--disable-cli' '--with-apxs=/usr/local/sbin/apxs' '--disable-ipv6' '--prefix=/usr/local' 'i386-portbld-freebsd4.11'

tokenizer was built as a seperate module afterwards using the php4-tokenizer port.
 [2006-08-23 17:59 UTC] tony2001@php.net 
>We've had another customer report regarding this issue on
> a completely different server, same back trace but this
> time using PHP 4.4.2 and 4.11-RELEASE-p19

Please report FreeBSD bugs to FreeBSD peoples.
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Fri Feb 21 17:01:29 2025 UTC