Roberto,
As i have poor experience using python api could you please confirm
that this is a python but that this code segfaults
==== main.c ====
#include <Python.h>
#include <stdio.h>
int main(){
printf("hello\n");
Py_Initialize();
PyThreadState *main_thread = PyThreadState_Get();
printf("Main thread: %p\n", main_thread);
PyObject * wsgi_module = PyImport_ImportModule("logging.config");
if(! wsgi_module){
printf("!wsgi_module\n");
return 0;
}
PyObject * wsgi_dict = PyModule_GetDict(wsgi_module);
if(!wsgi_dict){
printf("wsgi_dict\n");
return 0;
}
printf("wsgi_dict!\n");
PyObject * application = PyDict_GetItemString(wsgi_dict, "application");
printf("application: %p\n", (void *)application);
return 0;
}
============ end main.c ============
gcc ./main.c -o import_test -L/usr/lib/python2.7/config -lpython2.7
-I/usr/include/python2.7/
Output
turnaev@nostromo:~/box/trunk/frontend_new/src$ ./import_test
hello
Main thread: 0x1d3c0a0
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Segmentation fault (core dumped)
2012/7/27 Evgeny Turnaev <[email protected]>:
> Update. This is not gc stuff. I disabled gc and
> segfault is still reproducible in import _socket line of socket.py
>
> 2012/7/27 Evgeny Turnaev <[email protected]>:
>> No traceback :(
>> Pretty strage as i remember uwsgi sets signal handler for sigsegv.
>> Is there a way to manually provide traceback?
>>
>> Further investigation shows segfault happens in
>>
>> import _socket line in socket.py of python stdlib
>> (socket.py imported in logging)
>> Also i enabled gc.debug and it is seems gc is sollecting something before
>> segfault so think there is a pointer somethere to collected object and
>> someone is accessing it.
>>
>> Fri Jul 27 17:29:12 2012 - *** Operational MODE: preforking ***
>> gc: collecting generation 0...
>> gc: objects in each generation: 845 3122 0
>> gc: done, 0.0004s elapsed.
>> gc: collecting generation 0...
>> gc: objects in each generation: 789 3527 0
>> gc: done, 0.0003s elapsed.
>> gc: collecting generation 0...
>> gc: objects in each generation: 891 3809 0
>> gc: done, 0.0006s elapsed.
>> before import _socket
>> Fri Jul 27 17:29:12 2012 - !!! uWSGI process 12119 got Segmentation Fault !!!
>>
>> The strange thing also is that import logging.config works ok in
>> python interactive shell and when run as script.
>>
>> 2012/7/27 Roberto De Ioris <[email protected]>:
>>>
>>> Il giorno 27/lug/2012, alle ore 14:57, Evgeny Turnaev ha scritto:
>>>
>>>> Hello.
>>>> I experience segmentation fault with a very simple setup.
>>>>
>>>> I do:
>>>> sudo uwsgi -s /var/run/uwsgi_hypernova.sock -M -p 3 -w app
>>>>
>>>> *** Starting uWSGI 1.3-dev-2470 (64bit) on [Fri Jul 27 16:51:36 2012] ***
>>>> compiled with version: 4.6.3 on 27 July 2012 16:39:02
>>>> os: Linux-3.2.0-27-generic #43-Ubuntu SMP Fri Jul 6 14:25:57 UTC 2012
>>>> nodename: nostromo
>>>> machine: x86_64
>>>> detected number of CPU cores: 2
>>>> current working directory: /home/turnaev/box/trunk/frontend_new/src
>>>> detected binary path: /usr/local/bin/uwsgi
>>>> uWSGI running as root, you can use --uid/--gid/--chroot options
>>>> *** WARNING: you are running uWSGI as root !!! (use the --uid flag) ***
>>>> your memory page size is 4096 bytes
>>>> detected max file descriptor number: 1024
>>>> lock engine: pthread robust mutexes
>>>> uwsgi socket 0 bound to UNIX address /var/run/uwsgi_hypernova.sock fd 3
>>>> Python version: 2.7.3 (default, Apr 20 2012, 23:04:22) [GCC 4.6.3]
>>>> *** Python threads support is disabled. You can enable it with
>>>> --enable-threads ***
>>>> Python main interpreter initialized at 0x1e9f900
>>>> your server socket listen backlog is limited to 100 connections
>>>> *** Operational MODE: preforking ***
>>>> !!! uWSGI process 11162 got Segmentation Fault !!!
>>>
>>> no c traceback after that line ?
>>>
>>>
>>> --
>>> Roberto De Ioris
>>> http://unbit.it
>>> JID: [email protected]
>>>
>>> _______________________________________________
>>> uWSGI mailing list
>>> [email protected]
>>> http://lists.unbit.it/cgi-bin/mailman/listinfo/uwsgi
>>
>>
>>
>> --
>> --------------------------------------------
>> Турнаев Евгений Викторович
>> +7 906 875 09 43
>> --------------------------------------------
>
>
>
> --
> --------------------------------------------
> Турнаев Евгений Викторович
> +7 906 875 09 43
> --------------------------------------------
--
--------------------------------------------
Турнаев Евгений Викторович
+7 906 875 09 43
--------------------------------------------
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