nnrpd dies

[David E Mussulman]

Investigating further, I think this problem might be related to my
too-long-perl_access config line from earlier this year.  I did the
buffer size recompile change Julien suggested in
https://lists.isc.org/pipermail/inn-workers/2011-January/017342.html and
it looks like we're back in business.  It's a bit disturbing to me that
nnrpd just died (and didn't error out), but I don't have the time right
now to dwell on it.

Dave



On Mon, Aug 15, 2011 at 05:04:47PM -0500, David E Mussulman wrote:
> Hey gang,
> 
> So as of Friday evening sometime, my set-it-and-forget-it news server
> stopped accepting NNRP requests.  From the logs (and my client
> experience), it accepts the connection, gets good/valid authentication
> info, and then dies.  I don't know what would have happened to break
> this (but for good measure, I patched up the latest CentOS 5.6 and
> rebooted, to no avail.)
> 
> I checked if our kerberos against AD auth was failing, but that seemed
> to work okay.  (Manually running the auth_krb5 command succeeds.)  I
> double-checked our perl_access script, and that's running okay too.  If
> I login with bad credentials, I'm denied as expected and the connection
> stays up.  If I login successfully, the connection drops.
> 
> If I turn on tracing with nnrpd, here's what I see:
> 
> bash-3.2$ ./nnrpd -p 8001 -D -f -t
> *** glibc detected *** - nnrpd: dcs-news1.cs.: malloc(): memory
> corruption: 0x09b04308 ***
> ======= Backtrace: =========
> /lib/libc.so.6[0xd7a3fd]
> /lib/libc.so.6(__libc_malloc+0x67)[0xd7bfb7]
> /lib/libc.so.6(open_memstream+0x26)[0xd6fca6]
> /lib/libc.so.6(__vsyslog_chk+0x76)[0xdde5d6]
> /lib/libc.so.6(syslog+0x2a)[0xddeb9a]
> - nnrpd: dcs-news1.cs.[0x80606c4]
> - nnrpd: dcs-news1.cs.[0x8060b5b]
> - nnrpd: dcs-news1.cs.(PERMgetpermissions+0x540)[0x8061940]
> - nnrpd: dcs-news1.cs.(CMDauthinfo+0x391)[0x8057e01]
> - nnrpd: dcs-news1.cs.(main+0x1089)[0x805cd59]
> /lib/libc.so.6(__libc_start_main+0xdc)[0xd25e9c]
> - nnrpd: dcs-news1.cs.[0x8052801]
> ======= Memory map: ========
> (snipped for brevity)
> 
> Can anyone help me troubleshoot what's wrong, and how I can fix it?
> News is dead in the water here, and I'm really not sure why.
> 
> TIA,
> Dave
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