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Bug #43528 gzdeflate - "buffer error" or just "segfault"
Submitted: 2007-12-07 14:13 UTC Modified: 2007-12-18 01:00 UTC
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:0 (0.0%)
From: mi+php at aldan dot algebra dot com Assigned:
Status: No Feedback Package: Zlib related
PHP Version: 5.2.5 OS: FreeBSD/amd64
Private report: No CVE-ID: None
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From: mi+php at aldan dot algebra dot com
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 [2007-12-07 14:13 UTC] mi+php at aldan dot algebra dot com
I'm setting up MediaWiki-1.11.0, which uses gzdeflate (if available) to compress "serialized" objects.

Every once in a while I would get either a:
PHP Warning:  gzdeflate() [<a href='function.gzdeflate'>function.gzdeflate</a>]: buffer error in /opt/www/mediawiki/includes/BagOStuff.php on line 374
or simply a report about httpd-child segfaulting in the server's error-log.

I ended up commenting out the gzdeflate-detecting logic in MediaWiki's file in order to /never/ compress the objects, but that, obviously, is not a fix.

I'm struggling to convince the server, that it is Ok to dump a core-file -- so I can not post a trace at the moment. But if you are aware of this problem already, however, I'd greatly appreciate a fix.


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 [2007-12-10 13:48 UTC]
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.

 [2007-12-18 01:00 UTC] 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".
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