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Date:      Mon, 30 Sep 2013 09:24:51 +0200
From:      Oliver Pinter <oliver.pntr@gmail.com>
To:        John Marshall <john.marshall@riverwillow.com.au>
Cc:        Konstantin Belousov <kostikbel@gmail.com>, freebsd-stable@freebsd.org
Subject:   Re: 9.2-RC4 amd64 panic: vm_page_unwire
Message-ID:  <CAPjTQNGt9BY8pNC=y4om6v3bEfGmGTFZDj57DbjZi=nUzYu=iA@mail.gmail.com>
In-Reply-To: <20130929212104.GB1370@rwpc15.gfn.riverwillow.net.au>
References:  <20130927000728.GB19167@rwpc15.gfn.riverwillow.net.au> <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>

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On 9/29/13, John Marshall <john.marshall@riverwillow.com.au> wrote:
> On Sat, 28 Sep 2013, 17:27 +0200, Oliver Pinter wrote:
>> On 9/28/13, John Marshall <john.marshall@riverwillow.com.au> wrote:
>> > On Fri, 27 Sep 2013, 11:12 +0300, Konstantin Belousov wrote:
>> >> On Fri, Sep 27, 2013 at 10:07:28AM +1000, John Marshall wrote:
>> >> > The first two panics were triggered when shutting down the ntpd
>> >> > daemon
>> >> > (a recent development snapshot version of ntpd: 4.2.7p387).  Exiting
>> >> > a
>> >> > later release (p388) has not triggered the panic.  The system
>> >> > panicked
>> >> > again overnight, this time while acting as an sftp server receiving
>> >> > large (GB) files from another system.
>> >
>> >> > I have made the core.txt.[0-2] files available in the following
>> >> > directory.  The directory is not browsable.
>> >> >
>> >> >   http://www.riverwillow.net.au/~john/92rc4/
>> >>
>> >> This might be fixed by r254087-r254090 on stable/9.
>> >
>> > Thank you.  Those patches applied cleanly to releng/9.2 so I rebuilt a
>> > patched 9.2.  I double-checked and verified that the following patched
>> > files in my releng/9.2@255904 working copy were identical to the same
>> > files in stable/9@254090, then I removed /usr/obj/* and built a fresh
>> > system.
>
>> > The system panicked as follows during shutdown after its first boot.
>> > The corresponding core.txt.3 file is available at the same location
>> > previously posted.
>
>> > I have now seen this panic on a second server as well (also amd64 but
>> > different hardware vendor).  This second (unpatched) system also
>> > panicked during shutdown as follows. Corresponding file named
>> > core.txt.0.system2 is available at the same location as above.
>
>> try this from 9-STABLE:
>> https://github.com/freebsd/freebsd/commit/98362329be8e2cdefda1988e5e9d32efbc94855f
>
> Thanks Oliver.  If I followed the links correctly, that looks like
> r255507 on stable/9.  The second part of that patch didn't apply cleanly
> to 9.2.  I investigated and it looks like that is because r254442 had
> also been applied since 9.2.  I'm guessing I should also apply r254442
> as well (first)?  I shall proceed with applying both patches, rebuild,
> and see what happens.

This patch affected only those kernels, that has cpuctl. When no cpuctl loaded,
has no effect.

>
> --
> John Marshall
>



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