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From Austin Gonyou <aus...@coremetrics.com>
Subject RE: PHP4 was Re: has anybody seen worker segfaults?
Date Wed, 20 Feb 2002 22:24:18 GMT
NP. I'll move it over to that list then. I just wanted to bring it up
here first since I've no output from apache at all. Strace didn't help
much either(no this time). 

Thanks for the info Madhu. If I get an actual fix/resolution for this,
I'll be sure to let everyone know, so we've closure. 


On Wed, 2002-02-20 at 16:13, MATHIHALLI,MADHUSUDAN (HP-Cupertino,ex1)
wrote:
> Austin,
> 	I was working on this some time back, and I don't believe it's a
> Apache problem (it might be a better idea to move it to the PHP mailing
> list)
> 
> The problem occurs because of the way the PHP context is handled in
> php_output_filter (sapi_apache2.c).. Here's something that I observed :
> The function php_output_filter() is called > 2 times because of the way
> the
> output data is handled by the filter.. 
> - the first time around some sort of initialization is done.
> - during the second round, the data is sent out
> - then i don't know what happens (possibly wrong termination of the o/p
> brigade), and the php_output_filter is called for the third time.. The
> filter knows about such a thing happening, but the code is not written
> properly to handle the situation.. The PHP context (ctx) is corrupted,
> and
> the PHP module bombs - you end up seeing only the parent apache process.
> 
> (Due to my limited PHP knowledge) I introduced the following snippet
> just
> before the ap_save_brigade(...) block, and it seems to bring up apache 
> 
>     if ((ctx->state < 0) || (ctx->state > 2)) {
>         ap_log_error(APLOG_MARK, APLOG_DEBUG,
>                      0, NULL, "PHP : Unrecognized state!");
>         return 0;
>     }
> 
> This is a workaround and not a resolution/fix.. I'd appreciate if
> anybody
> could post a fix for this..
> 
> Thanks,
> -Madhu
> 
> 
> 
> 
> -----Original Message-----
> From: Austin Gonyou [mailto:austin@coremetrics.com]
> Sent: Wednesday, February 20, 2002 10:56 AM
> To: dev@httpd.apache.org
> Subject: Re: PHP4 was Re: has anybody seen worker segfaults?
> 
> 
> FYI. Not an compilation problem, HTTPD just doesn't do anything, but
> doesn't write a log either, and only 1 process is started. 
> 
> On Wed, 2002-02-20 at 12:19, Justin Erenkrantz wrote:
> > On Wed, Feb 20, 2002 at 10:16:03AM -0800, Justin Erenkrantz wrote:
> > > On Wed, Feb 20, 2002 at 12:03:00PM -0600, Austin Gonyou wrote:
> > > > PHP4.1.1 or > not working?
> > > 
> > > You have to have the version from CVS in order to get it to
> > > compile.  -- justin
> > 
> > Err, just to make it clear, you need the latest version of PHP
> > from their CVS repository.  We made changes in the .31 timeframe
> > to our input filters and they haven't done a release since then.
> > DougM committed the relevant fixes to PHP's repository right after
> > we changed it here.  -- justin
> -- 
> Austin Gonyou
> Systems Architect, CCNA
> Coremetrics, Inc.
> Phone: 512-698-7250
> email: austin@coremetrics.com
> 
> "It is the part of a good shepherd to shear his flock, not to skin it."
> Latin Proverb
-- 
Austin Gonyou
Systems Architect, CCNA
Coremetrics, Inc.
Phone: 512-698-7250
email: austin@coremetrics.com

"It is the part of a good shepherd to shear his flock, not to skin it."
Latin Proverb

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