Edit report at http://bugs.php.net/bug.php?id=47877&edit=1
ID: 47877
Comment by: caesium at gmail dot com
Reported by: leif at neland dot dk
Summary: ALERT - canary mismatch on efree() - heap overflow
detected
Status: No Feedback
Type: Bug
Package: MSSQL related
Operating System: Debian 5
PHP Version: 5.2.9
New Comment:
nick at ihighteam dot com's solution works.
I have a rather large dataset I am iterating through and ran into this
issue. I can confirm that Nicks solution is a suitable workaround.
Thanks Nick!
Previous Comments:
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[2009-08-13 22:16:18] nick at ihighteam dot com
I found a solution here and it works for me!
http://www.nabble.com/-Bug-41297--NEW:-PHP-Suhosin-Patch-creates-a-problem-with-mssql_query%28%29-when-selecting-a-smalldatetime-field-td17693263.html
Steps to Reproduce:
1. Use the default configuration of PHP with the mssql-extension.
2. create a sql-statement that selects a smalldatetimevalue from a
MSSQL-Database or use the Script at the end of this report.
3. the Script dies in the mssql_query()-function
Solution:
I found the following solution that works for me:
1. Open /etc/php.ini
2. "Decomment" the line "mssql.datetimeconvert = On" and change it to
"mssql.datetimeconvert = Off"
3. Restart Apache
4. The Problem dissappears
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[2009-07-10 03:11:23] synec dot net at gmail dot com
I checked extension.ini and remove some lines.
#extension=oci8.so
#extension=recode.so
#extension=pdo_oci.so
and then works fine.
------------------------------------------------------------------------
[2009-07-10 02:30:53] synec dot net at gmail dot com
run 'php -v' on CLI.
ALERT - canary mismatch on efree() - heap overflow detected (attacker
'REMOTE_ADDR not set', file 'unknown')
Install php v5.2.10 by FreeBSD ports.
Using options are 'CLI, CGI, APACHE, SUHOSIN, MULTIBYTE, IPV6, MAILHEAD,
REDIRECT, DISCARD, FASTCGI, PATHINFO'
------------------------------------------------------------------------
[2009-04-11 01:00:00] 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".
------------------------------------------------------------------------
[2009-04-03 03:00:29] ka...@php.net
Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves.
A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external
resources such as databases, etc. If the script requires a
database to demonstrate the issue, please make sure it creates
all necessary tables, stored procedures etc.
Please avoid embedding huge scripts into the report.
Aswell as a backtrace would help give some insight on the matter for the
maintainer
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the rest of the comments, please view the bug report online at
http://bugs.php.net/bug.php?id=47877
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