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Date:      Mon, 19 Feb 2018 01:55:58 +0100
From:      Mateusz Guzik <mjguzik@gmail.com>
To:        =?UTF-8?Q?Trond_Endrest=C3=B8l?= <Trond.Endrestol@fagskolen.gjovik.no>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>,  FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject:   Re: amd64 head -r329465 (non-debug build, but with symbols): "panic: spin lock held too long" during make check-old, reported during a sys_vfork
Message-ID:  <CAGudoHGs2K6HjeDM65ja6zMg=DXyJMGLtQLO2dedVXvjrd4wyA@mail.gmail.com>
In-Reply-To: <CAGudoHFz4gEZ6s8yYwJTsQMqcTCBB6vA9-L0%2B7kn1Nv0cYn6hw@mail.gmail.com>
References:  <DA76F62D-3373-47CA-AD95-DE9BA580772B@yahoo.com> <6907E068-C80A-44B8-A8AD-3EF27D52D127@yahoo.com> <20832C61-AA5D-41A6-8BF9-90CC87D17219@yahoo.com> <CAGudoHH5Yz6312QSADiOVx9kd17=WcatEB3qyNjTa5qh_hXASg@mail.gmail.com> <alpine.BSF.2.21.1802182023090.24158@mail.fig.ol.no> <6D47FEC0-7991-4F76-AC31-2CC1E8934521@yahoo.com> <alpine.BSF.2.21.1802182134140.24158@mail.fig.ol.no> <CAGudoHHsHGZYo3Ke2MGhk517oti6gEz0Zk0-jSmXVbbk9Vx83g@mail.gmail.com> <alpine.BSF.2.21.1802182320440.24158@mail.fig.ol.no> <CAGudoHFz4gEZ6s8yYwJTsQMqcTCBB6vA9-L0%2B7kn1Nv0cYn6hw@mail.gmail.com>

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 I committed the fix in
https://svnweb.freebsd.org/base?view=3Drevision&revision=3D329542

i.e. should be stable from this point on.

On Sun, Feb 18, 2018 at 11:55 PM, Mateusz Guzik <mjguzik@gmail.com> wrote:

> On Sun, Feb 18, 2018 at 11:24 PM, Trond Endrest=C3=B8l <
> Trond.Endrestol@fagskolen.gjovik.no> wrote:
>
>> On Sun, 18 Feb 2018 22:33+0100, Mateusz Guzik wrote:
>>
>> > On Sun, Feb 18, 2018 at 9:38 PM, Trond Endrest=C3=B8l <
>> > Trond.Endrestol@fagskolen.gjovik.no> wrote:
>> >
>> > > On Sun, 18 Feb 2018 11:51-0800, Mark Millard wrote:
>> > >
>> > > > Note: -r329448 was reverted in -r329461 : racy.
>> > >
>> > > True. I got a crash when compiling r329451 while running r329449.
>> > > I've now booted the r329422 ZFS BE and I'm attempting to build
>> > > r329529.
>> > >
>> >
>> > Looking around strongly suggests r329448 is the culprit. If you can
>> verify
>> > 329447 works fine we are mostly done here.
>>
>> I noticed no errors in r329447. When r329529 is built and installed,
>> I'll try to incrementally build and install r329531.
>>
>
> Can you grab a panicking kernel and apply this:
> https://people.freebsd.org/~mjg/wait_unlocked.diff
>
> there may be debug printfs signifying the problem condition was hit,
> however the patch should fix the panic
>
> --
> Mateusz Guzik <mjguzik gmail.com>
>



--=20
Mateusz Guzik <mjguzik gmail.com>



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