missing __init__.py = segfault

[Carl Karsten]

Binary package hint: libapache2-mod-python

It is probably more like "raise EnvironmentError" causes segfault, but I'm note expert enough.

I found this testing https://launchpad.net/bugs/175230 "__init__.py missing"

These 2 are not dependent on each other -
if 175230 isn't fixed, then the rm __init__.py steps below don't need to be done.

Steps:

Install Ubuntu-Server (only openssh-server)

sudo apt-get install libapache2-mod-python python-django
sudo rm /usr/share/doc/python-django/examples/__init__.py

sudo vim /etc/apache2/sites-available/django-example

<Location "/">
    SetHandler python-program
    PythonHandler django.core.handlers.modpython
    PythonDebug On
    PythonPath "['/usr/share/doc/python-django'] + sys.path"
    SetEnv DJANGO_SETTINGS_MODULE examples.settings
</Location>

sudo a2dissite default
sudo a2ensite django-example
sudo /etc/init.d/apache2 reload

hit box with browser

juser@cp333:~$ tail -f /var/log/apache2/error.log
[Sun Dec 09 23:30:33 2007] [notice] child pid 5414 exit signal Segmentation fault (11)
[Sun Dec 09 23:30:33 2007] [notice] child pid 5415 exit signal Segmentation fault (11)
[Sun Dec 09 23:30:33 2007] [notice] child pid 5416 exit signal Segmentation fault (11)
[Sun Dec 09 23:30:33 2007] [notice] child pid 5417 exit signal Segmentation fault (11)
[Sun Dec 09 23:30:33 2007] [notice] child pid 5420 exit signal Segmentation fault (11)
[Sun Dec 09 23:30:33 2007] [notice] child pid 5421 exit signal Segmentation fault (11)
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] mod_python (pid=5423, interpreter='cp333.personnelware.com', phase='PythonHandler', handler='django.core.handlers.modpython'): Application error
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] ServerName: 'cp333.personnelware.com'
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] DocumentRoot: '/htdocs'
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] URI: '/'
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] Location: '/'
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] Directory: None
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] Filename: '/htdocs'
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] PathInfo: '/'
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] Traceback (most recent call last):
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/usr/lib/python2.5/site-packages/mod_python/importer.py", line 1537, in HandlerDispatch\n default=default_handler, arg=req, silent=hlist.silent)
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/usr/lib/python2.5/site-packages/mod_python/importer.py", line 1229, in _process_target\n result = _execute_target(config, req, object, arg)
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/usr/lib/python2.5/site-packages/mod_python/importer.py", line 1128, in _execute_target\n result = object(arg)
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/var/lib/python-support/python2.5/django/core/handlers/modpython.py", line 177, in handler\n return ModPythonHandler()(req)
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/var/lib/python-support/python2.5/django/core/handlers/modpython.py", line 145, in __call__\n self.load_middleware()
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/var/lib/python-support/python2.5/django/core/handlers/base.py", line 22, in load_middleware\n for middleware_path in settings.MIDDLEWARE_CLASSES:
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/var/lib/python-support/python2.5/django/conf/__init__.py", line 28, in __getattr__\n self._import_settings()
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/var/lib/python-support/python2.5/django/conf/__init__.py", line 55, in _import_settings\n self._target = Settings(settings_module)
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] File "/var/lib/python-support/python2.5/django/conf/__init__.py", line 83, in __init__\n raise EnvironmentError, "Could not import settings '%s' (Is it on sys.path? Does it have syntax errors?): %s" % (self.SETTINGS_MODULE, e)
[Sun Dec 09 23:30:34 2007] [error] [client 192.168.1.48] EnvironmentError: Could not import settings 'examples.settings' (Is it on sys.path? Does it have syntax errors?): No module named examples.settings

[Carl Karsten (carlfk)]

bug vanished for no reason.

I think all I did was create/remove the file:

sudo touch /usr/share/doc/python-django/examples/__init__.py
sudo rm /usr/share/doc/python-django/examples/__init__.pyc

but now when I hit with browser, I get an error page and no segfault.

MOD_PYTHON ERROR

ProcessId: 4059
Interpreter: 'cp333.personnelware.com'

ServerName: 'cp333.personnelware.com'
DocumentRoot: '/htdocs'

URI: '/'
Location: '/'
Directory: None
Filename: '/htdocs'
PathInfo: '/'

Phase: 'PythonHandler'
Handler: 'django.core.handlers.modpython'

Traceback (most recent call last):

  File "/usr/lib/python2.5/site-packages/mod_python/importer.py", line 1537, in HandlerDispatch
    default=default_handler, arg=req, silent=hlist.silent)

  File "/usr/lib/python2.5/site-packages/mod_python/importer.py", line 1229, in _process_target
    result = _execute_target(config, req, object, arg)

  File "/usr/lib/python2.5/site-packages/mod_python/importer.py", line 1128, in _execute_target
    result = object(arg)

  File "/var/lib/python-support/python2.5/django/core/handlers/modpython.py", line 177, in handler
    return ModPythonHandler()(req)

  File "/var/lib/python-support/python2.5/django/core/handlers/modpython.py", line 145, in __call__
    self.load_middleware()

  File "/var/lib/python-support/python2.5/django/core/handlers/base.py", line 22, in load_middleware
    for middleware_path in settings.MIDDLEWARE_CLASSES:

  File "/var/lib/python-support/python2.5/django/conf/__init__.py", line 28, in __getattr__
    self._import_settings()

  File "/var/lib/python-support/python2.5/django/conf/__init__.py", line 55, in _import_settings
    self._target = Settings(settings_module)

  File "/var/lib/python-support/python2.5/django/conf/__init__.py", line 83, in __init__
    raise EnvironmentError, "Could not import settings '%s' (Is it on sys.path? Does it have syntax errors?): %s" % (self.SETTINGS_MODULE, e)

EnvironmentError: Could not import settings 'examples.settings' (Is it on sys.path? Does it have syntax errors?): No module named examples.settings

[Daniel T Chen (crimsun)]

Please reopen if reproducible in 8.10 or 9.04.