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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 <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:
> 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.
Matthias Scheler http://zhadum.org.uk/
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