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

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

From: Matthias Scheler <>
To: Manuel Bouyer <>
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:
 > and then in a better way here:
 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                        

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