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Date:      Wed, 22 Aug 2018 17:11:50 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 230752] panic: excl->share in newnfs_request
Message-ID:  <bug-230752-3630-Mrcm0gyawl@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-230752-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-230752-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D230752

--- Comment #8 from Dimitry Andric <dim@FreeBSD.org> ---
(In reply to Rick Macklem from comment #5)
> Hmm. I notice you do have the "V4: / =E2=80=A6" line in your /etc/exports.
> Do you know if there are clients doing an NFSv4 mount from "/"?
> Something like:
>   mount -t nfs -o nfsv4 nfs-client:/ /mnt

Yes, most clients use NFSv4, via /etc/fstab lines:

nfssrv:/archive /archive         nfs rw,intr,soft,nfsv4 0 0
nfssrv:/share /share nfs rw,intr,soft,nfsv4 0 0

I migrated most of them from NFSv3 a month or two ago.  This panic started
appearing relatively recently, for example when doing buildworlds from /sha=
re
(where freebsd sources are).


> I think I will end up reverting the "use AF_LOCAL" socket patch,
> since that is what is causing the soconnect() on the socket and
> should definitely make the panic()s go away.
> (It did fix a problem with using UDP when jails were enabled, but
>  that can be fixed less elegantly with a patch that adds a command
>  line argument for an alternate IP# instead of 127.0.0.1.)

I'll check it out, thanks.

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