[mod_python] seg fault with mod_python - python-ldap

Daniel J. Popowich dpopowich at blue-fox.com
Thu Mar 31 09:36:37 EST 2005

Graham Dumpleton writes:
> Colin Doherty wrote ..
> > Hi,
> > 
> > I'm getting an apache seg fault when submitting
> > authentication details using the mod_python auth
> > mechanism and python-ldap. The python-ldap module
> > works fine from a standalone script so it seems to be
> > an apache  - python-ldap - openldap library issue. Set
> > up is as follows on solaris 8:
> > 
> > apache 2 (2.0.53), python-ldap 2.0.6, mod_python
> > 3.1.4, mpservlets 1.1.6, openldap 2.2.7
> > 
> > Anyone come across this issue ?
> First thing to do would be to try and determine if the python-ldap
> module has been compiled against the same version of ldap libraries
> that any loaded mod_ldap module used by Apache, or any compiled
> in support for ldap in PHP uses.
> A mismatch in library versions required for different modules in
> the areas of Python, Apache and PHP is usually the cause of
> such unexplained seg faults.

I have a vague memory of dealing with this issue (ldap/apache); I
think the problem was a mismatch of Berkeley DB libraries (sleepycat).
I had built openldap against the latest sleepycat distro, but apache
was built against my standard RedHat distro.  No faster way to core
dump apache!

Make sure apache/python-ldap/openldap are all in sync.  The ldd
utility can help you figure out which binary/library is dependent on

Daniel Popowich

More information about the Mod_python mailing list