Fwd: Re: Fwd: RE: (RADIATOR) Radiator 3.1 Memory Leak
Mike McCauley
mikem at open.com.au
Fri Jul 5 18:59:29 CDT 2002
Hi Mike,
On Sat, 6 Jul 2002 03:37, Forbes Mike wrote:
> Do you have more specifics on the PAM leak as it looks like MIke did some
> extensive testing? I would like to pursue this with RedHat and any
> information would be helpful. Is this a problem specific to redhat or
> just pam in general?
I inspected the perl PAM interface closely for potenial leaks, then wrote a
small test program that would do large numbers of authentications. I found
that
new Authen::PAM
does not leak (it calls pam_start)
but that pam_authenticate does leak.
I was able to confirm that the perl interface does free the memory it mallocs,
so I conclude the problem is in the PAM libraries. I was testing on RH 7.3
with pam-0.75-32 and Authen-PAM-0.13 but I dont know if its specific to RH
Hope that helps.
Cheers.
>
> I am pursuing a workaround using LDAP but would like to use the kerb pam.
>
> Mike
>
> On Wed, 26 Jun 2002, Hugh Irvine wrote:
> > Hello Mike -
> >
> > This has been identified as a problem in the underlying PAM module that
> > is independent of Radiator. I suggest you check with Redhat or the
> > authors of the PAM module itself.
> >
> > regards
> >
> > Hugh
> >
> > On Wed, 26 Jun 2002 03:50, Forbes Mike wrote:
> > > We are using AuthBy PAM and using pam_krb5.so that came with Redhat
> > > Linux 2.4.18-3smp and radiator 3.1.
> > >
> > > It works fine with a small amount of requests, but when we move our 900
> > > or so modems to the radius server it starts to take up in excess of 250
> > > megs. I assume this is not normal behavior or is it based on the number
> > > of requests?
> > >
> > > If this is indeed a PAM problem, what are my options (a custom auth
> > > mod)? I need to authenticate via Kerberos and then a possible
> > > authorization with LDAP.
> > >
> > > Mike Forbes
> > >
> > > On Thu, 13 Jun 2002, Hugh Irvine wrote:
> > > > Hello Everyone -
> > > >
> > > > Here is Mike's reply.
> > > >
> > > > regards
> > > >
> > > > Hugh
> > > >
> > > >
> > > > ---------- Forwarded Message ----------
> > > >
> > > > Subject: Re: Fwd: RE: (RADIATOR) Radiator 3.1 Memory Leak
> > > > Date: Thu, 13 Jun 2002 16:07:10 +1000
> > > > From: Mike McCauley <mikem at open.com.au>
> > > > To: hugh at open.com.au
> > > >
> > > > Hi All,
> > > >
> > > > I have been able to confirm there is a slow leak when you use AuthBy
> > > > PAM with pam_unix, at least.
> > > >
> > > > After lengthy testing appears to be in PAM itself, and not in
> > > > Radiator or Authen::PAM.
> > > >
> > > > The speed and existence of the leak may well depend on exactly what
> > > > PAM service you use.
> > > >
> > > > > ---------- Forwarded Message ----------
> > > > >
> > > > > Subject: RE: (RADIATOR) Radiator 3.1 Memory Leak
> > > > > Date: Wed, 12 Jun 2002 14:48:29 -0700
> > > > > From: "Jon Snyder" <jon at pdx.edu>
> > > > > To: "Forbes Mike" <Mike.Forbes at Colorado.EDU>,
> > > > > <radiator at open.com.au>
> > > > >
> > > > > Mike,
> > > > >
> > > > > We saw quite a large memory leak in previous versions of Radiator
> > > > > (specifically 2.19) when using AuthBy PAM. Switching to AuthBy
> > > > > SYSTEM, which was functionally equivalent for us, resolve the
> > > > > issue. If you're using AuthBy PAM, see if that is the culprit.
> > > > >
> > > > > _______________________________
> > > > > Jon Snyder
> > > > > Computing & Networking Services
> > > > > Portland State University
> > > > > (503) 725-9565
> > > > >
> > > > > -----Original Message-----
> > > > > From: owner-radiator at open.com.au
> > > > > [mailto:owner-radiator at open.com.au]On Behalf Of Forbes Mike
> > > > > Sent: Wednesday, June 12, 2002 1:47 PM
> > > > > To: radiator at open.com.au
> > > > > Subject: (RADIATOR) Radiator 3.1 Memory Leak
> > > > >
> > > > >
> > > > >
> > > > > Has anyone experienced a memory leak on 3.1?
> > > > > I am running 3.1 on RedHat and experienced radiusd taking up
> > > > > 250megs of ram.
> > > > >
> > > > > Mike Forbes
> > > > >
> > > > >
> > > > > ===
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> > > > >
> > > > > -------------------------------------------------------
> > > >
> > > > --
> > > > Mike McCauley mikem at open.com.au
> > > > Open System Consultants Pty. Ltd Unix, Perl, Motif, C++,
> > > > WWW 24 Bateman St Hampton, VIC 3188 Australia
> > > > http://www.open.com.au Phone +61 3 9598-0985
> > > > Fax +61 3 9598-0955
> > > >
> > > > Radiator: the most portable, flexible and configurable RADIUS server
> > > > anywhere. SQL, proxy, DBM, files, LDAP, NIS+, password, NT, Emerald,
> > > > Platypus, Freeside, TACACS+, PAM, external, Active Directory etc etc
> > > > on Unix, Win95/8, 2000, NT, MacOS 9, MacOS X etc etc
> > > >
> > > > -------------------------------------------------------
> > > >
> > > > --
> > > > Radiator: the most portable, flexible and configurable RADIUS server
> > > > anywhere. Available on *NIX, *BSD, Windows 95/98/2000, NT, MacOS X.
> > > > -
> > > > Nets: internetwork inventory and management - graphical, extensible,
> > > > flexible with hardware, software, platform and database independence.
> >
> > --
> > Radiator: the most portable, flexible and configurable RADIUS server
> > anywhere. Available on *NIX, *BSD, Windows 95/98/2000, NT, MacOS X.
> > -
> > Nets: internetwork inventory and management - graphical, extensible,
> > flexible with hardware, software, platform and database independence.
--
Mike McCauley mikem at open.com.au
Open System Consultants Pty. Ltd Unix, Perl, Motif, C++, WWW
24 Bateman St Hampton, VIC 3188 Australia http://www.open.com.au
Phone +61 3 9598-0985 Fax +61 3 9598-0955
Radiator: the most portable, flexible and configurable RADIUS server
anywhere. SQL, proxy, DBM, files, LDAP, NIS+, password, NT, Emerald,
Platypus, Freeside, TACACS+, PAM, external, Active Directory etc etc
on Unix, Win95/8, 2000, NT, MacOS 9, MacOS X etc etc
===
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