Subject: Re: IPF 4.1.6 -- NFS Client hangs
To: None <current-users@netbsd.org>
From: Juergen Hannken-Illjes <hannken@eis.cs.tu-bs.de>
List: current-users
Date: 03/06/2005 00:22:15
On Sat, Mar 05, 2005 at 11:50:07AM -0500, Christos Zoulas wrote:
> In article <20050305160956.GA20856@bseis.eis.cs.tu-bs.de>,
> Juergen Hannken-Illjes  <hannken@eis.cs.tu-bs.de> wrote:
> >
> >Since IPFilter was upgraded to 4.1.6 on Feb 19, 2005 I get NFS
> >client errors `nfs server XXX: not responding' after some time.
> >
> >I tracked it down to sys/dist/ipf/netinet/fil.c::frpr_udpcommon().
> >If I remove the `frpr_pullup()' call all goes well.
> >
> >Does it ring any bells?
> 
> Well, the code to handle pullups has been re-written, but the change you
> are proposing will break things. The pullup should not fail in the udp
> case... Can you add some printfs in the code and see why it frpr_pullup fails?

`frpr_pullup()' calls `fr_pullup()' and here the `m = m_pullup(m, len);'
sets `m' to NULL (len is 28, M_LEN() is 24).  After ~10 failures the
nfs server is declared dead.

What next,
-- 
Juergen Hannken-Illjes - hannken@eis.cs.tu-bs.de - TU Braunschweig (Germany)