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Date:      Thu, 17 Oct 2013 17:13:29 +1100
From:      John Marshall <john.marshall@riverwillow.com.au>
To:        freebsd-stable@freebsd.org
Subject:   Re: 9.2-RC4 amd64 panic: vm_page_unwire
Message-ID:  <20131017061328.GC18178@rwpc15.gfn.riverwillow.net.au>
In-Reply-To: <20131007114652.GF1510@rwpc15.gfn.riverwillow.net.au>
References:  <20130927081221.GK41229@kib.kiev.ua> <20130928023046.GA1428@rwpc15.gfn.riverwillow.net.au> <CAPjTQNF8R8_krK6P0QRmbd9crLZM%2B2uwKZwWUxOFkdANPGC1hw@mail.gmail.com> <20130929212104.GB1370@rwpc15.gfn.riverwillow.net.au> <CAPjTQNGt9BY8pNC=y4om6v3bEfGmGTFZDj57DbjZi=nUzYu=iA@mail.gmail.com> <20130930095507.GD2813@rwpc15.gfn.riverwillow.net.au> <20131004132900.GC20752@rwpc15.gfn.riverwillow.net.au> <20131005071607.GA24797@rwpc15.gfn.riverwillow.net.au> <20131005075720.GF41229@kib.kiev.ua> <20131007114652.GF1510@rwpc15.gfn.riverwillow.net.au>

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On Mon, 07 Oct 2013, 22:46 +1100, John Marshall wrote:
>=20
> stable/9@r244654 is where the panic is introduced.  So I am guessing
> that nullfs is an unanticipated necessary ingredient?
>=20
> I run jails on both systems and use nullfs to mount...

For anybody following this thread and wondering...

Developers confirmed that nullfs was the neccesary ingredient required
to induce this panic.  A fix was produced, tested, and committed to head
on 2013-10-10 as r256211.  I applied that patch to releng/9.2 a week ago
and have had releng/9.2 + r256211 patch running on two servers since
then.  All looks good.

That patch was MFC'd to stable/9 this morning as r256590.

Thank you to those who diagnosed this panic and produced the patch.

--=20
John Marshall

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