newscache: Thread: Re: Newscache on Freebsd

Hi Derkjan,

I am CCing your mail to the NewsCache Mailinglist.

On Mon, 2003-07-28 at 18:15, Derkjan de Haan wrote:
> In the past, I have run NewsCache on Linux, and most of the time it works
> fine. However, I am experiencing difficulties in using NewsCache on FreeBSD
> 5.1.
> I have installed the latest NewsCache from the ports, configured it, created
> the spool directory, and started it. The problem is that the main process
> starts, but the worker processes (as soon as clients connect) die with SIG
> 11. Is this a known problem, and/or are there things I can do to diagnose,
> of assist in fixing this ?
> I have attached the config file
> 
> This is output from syslog, news.*
> 
> Jul 28 18:10:10 bsdtest NewsCache[9433]: NewsCache Server Start
> Jul 28 18:10:22 bsdtest NewsCache[9435]: 192.168.2.1 [192.168.2.1] connect
> Jul 28 18:10:22 bsdtest NewsCache[9435]: NServer::NServer() hostname set to:
> bsdtest.badmuts.org
> Jul 28 18:10:22 bsdtest NewsCache[9435]: 192.168.2.1 [192.168.2.1] MODE
> READER
> Jul 28 18:10:22 bsdtest NewsCache[9435]: 192.168.2.1 [192.168.2.1] LIST
> Jul 28 18:10:22 bsdtest NewsCache[9435]: active database timed out
> Jul 28 18:10:22 bsdtest NewsCache[9433]: 9435 caught signal 11

I have no idea, and nearly no time at the moment for newscache. 

Has anyone else seen this problem with Newscache 1.1.12 and libsocket++
1.12.10, or runs NewsCache successfully under FreeBSD?

You can try to recompile with debugging symbols.
cd /usr/ports/news/newscache/ && make install CFLAGS="-g" STRIP=
Then you can try to get a backtrace with gdb.

Perhaps I can try to setup a NewsCache next weekend.

regards
tilman

Tilman Linneweh wrote:

>You can try to recompile with debugging symbols.
>cd /usr/ports/news/newscache/ && make install CFLAGS="-g" STRIP=
>Then you can try to get a backtrace with gdb.
>  
>
You can also expand the configure command with: --enable-debug This 
options creates more Debug Output in the news.debug file and compile the 
program with the -g compiler option.

Regards
Herbert

On Sun, Aug 03, 2003 at 06:39:02AM +0200, Herbert Straub wrote:
> You can also expand the configure command with: --enable-debug This 
> options creates more Debug Output in the news.debug file and compile the 
> program with the -g compiler option.

With --enable-debug I now get this:

Aug  3 14:25:13 energistic NewsCache[76883]: NewsCache Server Start
Aug  3 14:25:16 energistic NewsCache[77974]: localhost [127.0.0.1] connect
Aug  3 14:25:16 energistic NewsCache[77974]: NServer::NServer()
Aug  3 14:25:16 energistic NewsCache[77974]: NServer::NServer() hostname set to:energistic.com
Aug  3 14:25:16 energistic NewsCache[77974]: CServer::CServer(/var/cache/newscache,*serverlist)
Aug  3 14:25:16 energistic NewsCache[77974]: LServer::init(/var/cache/newscache)
Aug  3 14:25:16 energistic NewsCache[77974]: ArtSpooler::ArtSpooler (/var/cache/newscache)
Aug  3 14:25:16 energistic NewsCache[77974]: RServer::init/1
Aug  3 14:25:20 energistic NewsCache[77974]: localhost [127.0.0.1] group alt.test
Aug  3 14:25:20 energistic NewsCache[77974]: NewsCache selectgroup (alt.test)
Aug  3 14:25:20 energistic NewsCache[77974]: CServer::groupinfo(alt.test)
Aug  3 14:25:20 energistic NewsCache[77974]: NVActiveDB::get(alt.test,&gi)
Aug  3 14:25:20 energistic NewsCache[77974]: RServer::selectgroup(alt.test)
Aug  3 14:25:20 energistic NewsCache[77974]: RServer::setserver({news.verizon.net,nntp})
Aug  3 14:25:20 energistic NewsCache[77974]: RServer::issue: issue group alt.test
Aug  3 14:25:20 energistic NewsCache[76883]: 77974 caught signal 11
e

I don't know how to use gdb to get a good backtrace... if someone would 
give me the 10 second overview I'm sure I could get one...

-Steve

Steve Ames wrote:

>With --enable-debug I now get this:
>
>Aug  3 14:25:13 energistic NewsCache[76883]: NewsCache Server Start
>Aug  3 14:25:16 energistic NewsCache[77974]: localhost [127.0.0.1] connect
>Aug  3 14:25:16 energistic NewsCache[77974]: NServer::NServer()
>Aug  3 14:25:16 energistic NewsCache[77974]: NServer::NServer() hostname set to:energistic.com
>Aug  3 14:25:16 energistic NewsCache[77974]: CServer::CServer(/var/cache/newscache,*serverlist)
>Aug  3 14:25:16 energistic NewsCache[77974]: LServer::init(/var/cache/newscache)
>Aug  3 14:25:16 energistic NewsCache[77974]: ArtSpooler::ArtSpooler (/var/cache/newscache)
>Aug  3 14:25:16 energistic NewsCache[77974]: RServer::init/1
>Aug  3 14:25:20 energistic NewsCache[77974]: localhost [127.0.0.1] group alt.test
>Aug  3 14:25:20 energistic NewsCache[77974]: NewsCache selectgroup (alt.test)
>Aug  3 14:25:20 energistic NewsCache[77974]: CServer::groupinfo(alt.test)
>Aug  3 14:25:20 energistic NewsCache[77974]: NVActiveDB::get(alt.test,&gi)
>Aug  3 14:25:20 energistic NewsCache[77974]: RServer::selectgroup(alt.test)
>Aug  3 14:25:20 energistic NewsCache[77974]: RServer::setserver({news.verizon.net,nntp})
>Aug  3 14:25:20 energistic NewsCache[77974]: RServer::issue: issue group alt.test
>
--> and now RServer::connect() should be displayed!

>Aug  3 14:25:20 energistic NewsCache[76883]: 77974 caught signal 11
>e
>
I think the error occours in the class RServer::issue (). The object 
variable _pServerStream is not initialized in the Contructor call and 
therefore the is_connected() returns 1. After this the connect() method 
is not called and *_pServerStream << command << flush crashes.

>I don't know how to use gdb to get a good backtrace... if someone would 
>give me the 10 second overview I'm sure I could get one...
>
I read the backtrace, but i can't see the line, which is the reason... 
Anyway, please try the following patch and check, if the error is gone:
diff -u NServer.h.orig NServer.h

--- NServer.h.orig      2003-08-03 22:00:37.000000000 +0200
+++ NServer.h   2003-08-03 22:01:00.000000000 +0200
@@ -243,6 +243,7 @@
         RServer():NServer() {
                _ServerList = NULL;
                _CurrentServer = NULL;
+               _pServerStream = NULL;
        } void init(MPList * serverlist);

        /**

NServer.h is in the subdirectory NServer-0.9.1.

Herbert

On Sun, 2003-08-03 at 23:02, Steve Ames wrote:
> > I read the backtrace, but i can't see the line, which is the reason... 
> > Anyway, please try the following patch and check, if the error is gone:
> > diff -u NServer.h.orig NServer.h
> > 
> > --- NServer.h.orig      2003-08-03 22:00:37.000000000 +0200
> > +++ NServer.h   2003-08-03 22:01:00.000000000 +0200
> > @@ -243,6 +243,7 @@
> >         RServer():NServer() {
> >                _ServerList = NULL;
> >                _CurrentServer = NULL;
> > +               _pServerStream = NULL;
> >        } void init(MPList * serverlist);
> > 
> >        /**
> > 
> > NServer.h is in the subdirectory NServer-0.9.1.
> 
> Applied this patch and everything seems to be working again!

Ok,
I have added the patch to the FreeBSD port.

Thanks Herbert for the quick response.

regards
tilman

----- Original Message ----- 
From: "Tilman Linneweh" ####@####.####
To: "Steve Ames" ####@####.####
Cc: "Herbert Straub" ####@####.#### "Derkjan de Haan"
####@####.#### ####@####.####
Sent: Monday, August 04, 2003 3:02 PM
Subject: Re: Newscache on Freebsd


> On Sun, 2003-08-03 at 23:02, Steve Ames wrote:
> > > I read the backtrace, but i can't see the line, which is the reason...
> > > Anyway, please try the following patch and check, if the error is
gone:
> > > diff -u NServer.h.orig NServer.h
> > >
> > > --- NServer.h.orig      2003-08-03 22:00:37.000000000 +0200
> > > +++ NServer.h   2003-08-03 22:01:00.000000000 +0200
> > > @@ -243,6 +243,7 @@
> > >         RServer():NServer() {
> > >                _ServerList = NULL;
> > >                _CurrentServer = NULL;
> > > +               _pServerStream = NULL;
> > >        } void init(MPList * serverlist);
> > >
> > >        /**
> > >
> > > NServer.h is in the subdirectory NServer-0.9.1.
> >
> > Applied this patch and everything seems to be working again!
>
> Ok,
> I have added the patch to the FreeBSD port.
>
> Thanks Herbert for the quick response.
>
> regards
> tilman


I have updated my ports collection to include this patch, recompiled
nntpcache and all is well. Many thanks to all involved !


regards,

Derkjan

> I have updated my ports collection to include this patch, recompiled
> nntpcache and all is well. Many thanks to all involved !

Hmmm. Excuse me, I meant newscache of course. *reaches for brown paper bag*


regards,

Derkjan