Hi again,
run the same sample script with PHP 5.2.6 configured with --disable-all
--enable-debug --with-mssql on the Ubuntu Hardy machine. I did exactly
the same things on both the Slackware server and the Ubuntu, the output
and expected result was though different:
Here's PHP:s output on Ubnuntu Hardy 8.0.4 with PHP 5.2.6:
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x08317fcc
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x08318164
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x083196a4
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x08319878
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x0831aa10
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x0831abf4
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x0831af50
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x0831b124
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x0831b2f4
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
---------------------------------------
/home/karlstrk/php-5.2.6/Zend/zend_variables.h(35) : Block 0x0831b7e0
status:
/home/karlstrk/php-5.2.6/Zend/zend_variables.c(36) : Actual location
(location was relayed)
Beginning: OK (allocated on
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c:911, 25 bytes)
Start: OK
End: Overflown (magic=0x0000004D instead of 0x23024D91)
2 byte(s) overflown
---------------------------------------
[Wed Oct 15 10:20:52 2008] Script: '/var/www/asta/testcases/TestMsSQL.php'
/home/karlstrk/php-5.2.6/ext/mssql/php_mssql.c(911) : Freeing
0x08317FCC (25 bytes), script=/var/www/asta/testcases/TestMsSQL.php
Last leak repeated 9 times
=== Total 10 memory leaks detected ===
It reports 10 memory leaks..? I'm also gonna run this though valgrind,
need to install it on this machine first...
/Krister Karlström
Ilia Alshanetsky wrote:
Can you try to compile PHP with --disable-all --enable-debug and a flag
for the mssql extension, then try to run valgrind. From the output it
seems there maybe errors in dl() library.
On 14-Oct-08, at 4:15 AM, Krister Karlström wrote:
Hi,
I run the script on a server in our production environment, a
slackware server with a self compiled PHP from source. The PHP version
was 5.2.5.
php-v gives the following:
PHP 5.2.5 (cli) (built: Mar 28 2008 12:02:55)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies
I found the problem on a development server which was running Ubuntu
and apperently also the Suhosin patch (the latest available packet
from Ubuntu).
/Krister Karlström
Pierre Joye wrote:
hi,
On Tue, Oct 14, 2008 at 8:46 AM, Krister Karlström
<[EMAIL PROTECTED]> wrote:
About this bug #44872, I run my small sample script (posted on the bug
reporting page) through valgrind and got the attached output. I'm
not sure
whether this shows that there's a leak in the mssql extension or if
this is
normal. Valgrind said that 853 bytes where definitely lost, does
this mean
that there is a memory leak? Hopefully someone who is better to analyze
valgrinds output than me can tell the answer... Here's the full
output from
valgrind:
That's exactly why it is not as easy that some may say. This report
shows the (expected sometimes) warnings with dl and something related
to the SNMP extension. The scripts in the bug report were using mysqli
and mssql, with all kind of possible extensions (zend optimizer,
debugger, etc.) and patches applied.
Did you run it using a self compiled php? Which version?
Cheers,
--
* Ing. Krister Karlström, Zend Certified Engineer *
* Systemutvecklare, IT-Centralen *
* Arcada - Nylands Svenska Yrkeshögskola *
* Jan-Magnus Janssons plats 1, 00550 Helsingfors, Finland *
* Tel: +358(20)7699699 GSM: +358(50)5328390 *
* E-mail: [EMAIL PROTECTED] *
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