[mod_python] Help about apache mod_python Segmentation fault

Hi Graham Dumpleton,

And, when I debug in RedHat9 and my embeded envirenment, the main process goes different!?

in Redhat9, run like: 
(gdb) b main
Breakpoint 1 at 0x8067a40: file main.c, line 438.
(gdb) run -X
Starting program: /usr/local/apache2/bin/httpd -X
[New Thread 1076592288 (LWP 1049)]
[Switching to Thread 1076592288 (LWP 1049)]

Breakpoint 1, main (argc=134642240, argv=0x2) at main.c:438
438     {
(gdb) n
272         stat = apr_app_initialize(argc, argv, NULL);

and in my embeded system runs like:

Breakpoint 1, main (argc=2, argv=0xbffff294)
    at /usr/src/build/snapgear/user/apache/server/main.c:441
441         int configtestonly = 0;
(gdb) n
442         const char *confname = SERVER_CONFIG_FILE;



it seems that, the hosting system doing something for init before the main function run, but embeded system do not?

I thinks is here somthing wrong? or there should be some compiling parameters I missed?

======= 2008-02-27 wrote: =======

>On 27/02/2008, auther_bin  <auther_bin at 21cn.com > wrote:
> > Dear friends,
> >
> >         When I compiling the apache python mod_python and install it into my uClibc envirentment, 
but when I
> >  runing httpd -X, send a very little request with index.html it crashed. after some debuging work, 
I find there should be something wrong in mod_python.c line(about 1561) which looks like:
> >  --------------------------------- with my debug printing :) ------------------------
> >  printf("JJJJJJJJ %s - > python_handler\n", phase);
> >  printf("JJJJJJJJ %x[%d]\n", &req- >per_dir_config, (&python_module)- >module_index);
> >     /* get configuration */
> >     conf = (py_config *) ap_get_module_config(req- >per_dir_config,
> >                                                   &python_module);
> >  printf("JJJJJJJJ a %s conf=%x - > python_handler\n", phase,conf);
> >  .............
> >  ------------------------------ end source --------------------------------------
> >
> >  I guess that, there should be a regester error in it. with some debug message I print:
> >  ------------- printing -------------------------------
> >  JJJJJJJJJ PythonPostReadRequestHandler
> >  JJJJJJJJ PythonInitHandler - > python_handler
> >  JJJJJJJJ 820a544[29]
> >  Segmentation fault
> >  ------------- end printing ---------------------------
> >
> >  any advices pls?
>
>Unfortunately that doesn't help much.
>
>You need a stack trace to show the true location in code.
>
>Use procedure documented in section 'Debugging Crashes With GDB' of:
>
>  http://code.google.com/p/modwsgi/wiki/DebuggingTechniques
>
>to run up httpd inside of gdb and get a stack trace of where crash is occurring.
>
>This documentation is for mod_wgsi, but same procedure used for mod_python.
>
>There is a similar procedure documented on Apache site, but can't
>remember where.
>
>Graham
>
>
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                    ÖÂ
Àñ£¡
2008-03-03 

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