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From "Ashton, Bruce" <bruce.ash...@metoffice.com>
Subject RE: large requests crash mod_jk on HP-UX 11.0
Date Wed, 29 May 2002 07:54:29 GMT
Thanks Costin,
	I've found a workaround now, but I might try the cvs head anyway.
With a bit of luck HP's fix, whatever it was might have got in there.


> Can you try with the CVS head ? 
> 
> There are many bug fixes since 4.0.2.
> 
> > [Mon May 27 14:07:01 2002] [notice] child pid 13574 exit signal
> Segmentation
> > fault (11)
> > [Mon May 27 14:07:01 2002] [notice] child pid 12572 exit signal
> Segmentation
> > fault (11)
> 
> I hope using CVS head will fix this. If not, could you try running:
>   gdb httpd 
>   > run -X
> 
> Then do the request, you should see the sig11 in gdb - then do 
> 'bt' and send us the result ?
> 
> Or configure apache to generate core dumps, and go: 
>    gdb .../httpd .../core
>    > bt
[Ashton, Bruce]  	I'll have to negotiate with the Unix team (I'm part
of the Java team)  [Ashton, Bruce]  to play with Apache but I'll give it a
go. 

> > I add some extra debugging myself and ascertained that jk_translate runs
> > through to completion, but no debugging code in jk_handler ever gets
> run.
> > If jk_handler is entered at all it must fail at line 1075, "const char
> > *worker_name = ap_table_get(r->notes, JK_WORKER_ID);"
> 
> Weird. Have you added a printf() before and after, and it crashes at that 
> line ??? 
	[Ashton, Bruce]  I can't add a printf before, this line, the
compiler won't accept it.  Something to do with it being a const assignment
or something I suppose.


> > For any given URL that fails, it is possible to make it work again by
> making
> > the URL *SHORTER*.  This is possible if there is extraneous crap in the
> > query string, which you can cut out.  I have discovered that for a
> 
> Interesting. What's the URL that fails ? 
> 
> > Part of my problem is that I don't really know in what order Apache
> calls
> > methods from mod_jk, so I don't know if any other part of mod_jk is
> being
> > run between jk_translate and jk_handler.
> 
> None AFAIK. Are you sure jk_handler is never invoked ?
	[Ashton, Bruce]  NO.  It might well be crashing in that line.


> Costin
> 
> 
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