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Date: Wed, 17 Jan 2007 00:53:05 +0100
From: "Attilio Rao" <attilio@freebsd.org>
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To: "Randall Stewart" <rrs@cisco.com>
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Cc: freebsd-current@freebsd.org
Subject: Re: A panic with the latest...
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2007/1/17, Randall Stewart <rrs@cisco.com>:
> Randall Stewart wrote:
> > Well:
> >
> > I updated everything this AM.. and just
> > got around to rebuilding my XEON machine
> > (Dell 2.8 gig .. hyperthreaded).
> >
> > Built a witness kernel (I have been running
> > with that lately).. and rebooted it...
> >
> > It never came back.. so out to the barn to check
> > on it.. and I see:
> >
> > panic: lock(htploc) sleep mutex does not match earlier(spin mutex) lock
> >
> > Anyone ever see this yet?
> >
> > I am rebuilding with a non-witness (invariants only) kernel.. and
> > see if that boots :-)
> >
> > R
> Ok
>
> I just confirmed.. with witness off it boots..

Probabilly the htploc just changed its nature inside the code and has
not been updated into the witness static table of locks
(kern/subr_witness.c).
Change the entry.

Attilio


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