ID:               36246
 Comment by:       joe at virtualmin dot com
 Reported By:      eustaquiorangel at yahoo dot com
 Status:           No Feedback
 Bug Type:         XSLT related
 Operating System: Linux, Slackware 10.2 (current)
 PHP Version:      5.1.2
 New Comment:

Just an added data point:

I'm getting this same crasher, but only when mod_fastcgi is enabled
(not even using a PHP script--but it appears to happen when PHP is
being loaded by fcgi).  Here's the pseudo-backtrace from the log (I'll
try to reproduce it in gdb later):

*** glibc detected *** /usr/sbin/httpd: double free or corruption
(fasttop): 0x09ece438 ***
======= Backtrace: =========
/lib/libc.so.6[0x560124]
/lib/libc.so.6(__libc_free+0x77)[0x56065f]
/etc/httpd/modules/libphp5.so(zend_hash_destroy+0x75)[0x4188587]
/etc/httpd/modules/libphp5.so(sapi_shutdown+0x20)[0x414c599]
/etc/httpd/modules/libphp5.so[0x41bc65c]
/usr/lib/libapr-0.so.0[0xa18ed5]
/usr/lib/libapr-0.so.0(apr_pool_clear+0x35)[0xa19c80]
/usr/sbin/httpd(main+0x468)[0x65774b]
/lib/libc.so.6(__libc_start_main+0xdf)[0x511d5f]
/usr/sbin/httpd[0x649151]
======= Memory map: ========


Previous Comments:
------------------------------------------------------------------------

[2006-02-09 01:00:05] 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".

------------------------------------------------------------------------

[2006-02-01 20:23:26] [EMAIL PROTECTED]

Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32

Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.



------------------------------------------------------------------------

[2006-02-01 20:13:01] eustaquiorangel at yahoo dot com

> We can't reproduce it, so you tell us.

Too many variables there, but definitely something is different from
5.1.1 to 5.1.2. To reproduce it the way we have here you'll need the
exactly the same environment, but this is a complicated matter. OS,
Apache version, all the scripts needed to run our environment. 

As I'm trying to make this works since before yesterday, I can't wait
more to put the computer to work. I'll stick with 5.1.1 (ooofs, it's
working fine) and if on the next upgrade (I'll skip 5.1.2 for sure! ;-)
it happens again I'll open a bug report again, hopefuly with more time
available to spend to check it. You can close this report.

Btw, I understand that reproduce the problem helps a lot, but since
it's my first bug report here, I'm curious: thinking about all the
scripts installed on all over the world, how can you dig more into this
kind of thing without having the same enviroment?

------------------------------------------------------------------------

[2006-02-01 19:34:47] [EMAIL PROTECTED]

>Maybe a problem on the database code and not on XSLT (that 
>seems to works ok isolated)?
We can't reproduce it, so you tell us.

------------------------------------------------------------------------

[2006-02-01 18:20:49] eustaquiorangel at yahoo dot com

On CLI it seems that is not a problem. I run it 10 times and no error
message. And using the web server seems that it's not a problem too,
*** till *** (and I saw this now) I opened a script which gives me
acess to our local intranet and it uses a simple database connection.
Then the message is shown!

I just saw that because I was testing on the CLI, on the "pure"
webserver script and then I connect to get my report, and, voila, the
error message is there.

Maybe a problem on the database code and not on XSLT (that seems to
works ok isolated)? Or maybe both? XSLT could put some junk on the
memory and the database stuff just gives the error? Wow. 

I'm using Oracle Instant Client here. And, again, no error with any of
those stuff on 5.1.1.

------------------------------------------------------------------------

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the rest of the comments, please view the bug report online at
    http://bugs.php.net/36246

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