Re: kern/46221: Kernel panic in NFS server code

[Matthias Scheler <tron%zhadum.org.uk@localhost>]

The following reply was made to PR kern/46221; it has been noted by GNATS.

From: Matthias Scheler <tron%zhadum.org.uk@localhost>
To: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Cc: NetBSD GNATS <gnats-bugs%NetBSD.org@localhost>
Subject: Re: kern/46221: Kernel panic in NFS server code
Date: Wed, 21 Mar 2012 17:12:28 +0000

 On Wed, Mar 21, 2012 at 05:40:39PM +0100, Manuel Bouyer wrote:
 > >  I guess that an extra check whether "ip" is NULL would prevent the
 > >  panic. But I'm not sure whether that is the correct fix.
 > 
 > Looks like kern/41147. Fixed here:
 > http://mail-index.netbsd.org/source-changes/2009/09/20/msg001090.html
 > and then in a better way here:
 > http://mail-index.netbsd.org/source-changes/2009/11/05/msg002668.html
 
 It seems that we need something like that in "netbsd-6".
 
 > At first glance I can't see a problem with this. But I wonder if stacked
 > filesystems could have a role in this; is the NFS-exported filesystem also
 > acceeded by layered FSes ?
 
 No, it isn't. But the server sometimes mounts the NFS volume from itself
 via NFS. I've a suspicion that it only happens after I ran two scripts
 on the machine. The first one creates a lot of null and local NFS mounts.
 The second one will remove them later.
 
        Kind regards
 
 -- 
 Matthias Scheler                                  http://zhadum.org.uk/