The error messages comes from Suhosin, which is why a basic PHP
environment does not exhibit this problem. What I can ask you to try
is to run the affected code on a basic PHP environment through
valgrind and see if it reports any errors. If it does not, there is a
chance it maybe a false positive on the part of Suhosin. If it does
report a problem however, then mssql extension has a bug and valgrind
output should be good enough to identify the where & the why.
On 10-Oct-08, at 7:18 AM, Krister Karlström wrote:
Hi,
This bug #44872 puzzles me, I experienced it today running testcases
with PHPUnit on command line, thus invoking PHP CLI. I'm working on
a Ubuntu Hardy 8.0.4 server, using PHP 5.2.4-2ubuntu5.3 with
Suhosin-Patch 0.9.6.2 (cli).
The operation mssql_free_result() is terminated by Suhosin with the
following message:
ALERT - canary mismatch on efree() - heap overflow detected (attacker
'REMOTE_ADDR not set', file 'TestMsSQL.php', line 16)
The bug report for this matter has status "No feedback". The bug was
reported on 30 Apr 5:19pm UTC, and status was changed to "no
feedback" on 10 May 1:00am UTC. However, after that some comments
confirming this bug have been posted, including myself today.
Does anyone know where's the _source_ of this problem? Is it in the
source code of PHP or in the Suhosin patch? I have not encountered
this problem in a "pure" Slackware environment where the Suhosin
patch is not used, so it seems like a Suhosin issue. It might as
well be a bug in PHP that Suhosin catches...
Maybe someone should re-open this ticket?
http://bugs.php.net/bug.php?id=44872
Greetings,
Krister Karlström, Helsinki, Finland
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* Ing. Krister Karlström, Zend Certified Engineer *
* Systemutvecklare, IT-Centralen *
* Arcada - Nylands Svenska Yrkeshögskola *
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