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From Christopher Shumway <cshum...@titan-project.org>
Subject Re: [mp1] Segfaults in ap_table_get (Apache::Registry corruption?)
Date Thu, 01 Mar 2007 22:28:47 GMT
On Thu, 1 Mar 2007, Philip M. Gollucci wrote:

> Christopher Shumway wrote:
>> Hi folks,
>> 
>> Sorry to bug the dev modperl list, but I could really use some expert 
>> advice on this problem.
>> 
>> About once every 15-45 minutes or so a httpd process will segfault when 
>> serving a modperl page.  I've built apache httpd, modperl and perl with 
>> debuging symbols, and have gotten a few core images.
>> 
>> Here are the relvent software versions:
>> FreeBSD 6.1-RELEASE-p14 running an SMP kernel
>> Perl 5.8.8 built for i386-freebsd-64int
>> apache+mod_ssl-1.3.37+2.8.28
>> mod_perl-1.29

> This seems to be the 'HTTP Headers', whats the output of a curl -I when this 
> happens ?

Unforantally I haven't been able to directly reproduce the problem, but here 
are the headers from a normal request:

GET /modperl/achievement/il/1506 HTTP/1.1
Host: testweb6.greatschools.net
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.2) 
Gecko/20070219 Firefox/2.0.0.2
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Cookie: RMID=c690cd8a4547d910; OAX=xpDNikVH2RAABjmi; 
s_vi=[CS]v1|4547D10300004AA5-A160B130000042F[CE]; 
TRNO=1168387446.198.144.205.138; STATE=CA; hoverNewsMss=Fri, 23 Feb 2007 
01:37:34 GMT; s_cc=true; s_sq=%5B%5BB%5D%5D; NumAd=-1

HTTP/1.x 200 OK
Date: Thu, 01 Mar 2007 22:25:49 GMT
Server: Apache/1.3.37 (Unix) mod_perl/1.29 mod_ssl/2.8.28 OpenSSL/0.9.7e-p1 mod_jk/1.2.19
Set-Cookie: STATE=IL; path=/; expires=Sat, 28-Feb-2009 22:25:49 GMT
Expires: Wed, 28 Feb 2007 22:25:49 GMT
Cache-Control: no-cache
P3P: policyref="http://www.greatschools.net/w3c/p3p.xml", CP="ALL DSP COR CUR DEVi PSA IVAi
IVDi CONi OUR IND UNI"
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=ISO-8859-1

I'll setup curl in a loop repeatedly fetching a modperl page to see if I can 
capture a request when httpd segfaults.

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