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Date:      Wed, 19 Oct 2005 14:10:43 -0500
From:      Philip Kizer <pckizer@nostrum.com>
To:        freebsd-current@freebsd.org
Cc:        Robert Watson <rwatson@freebsd.org>
Subject:   Re: Problem remains with FreeBSD 6.0-RC1 as seen in RELENG_5
Message-ID:  <F2F56E4C-3E31-48C0-A202-9EC21BF4CF2E@nostrum.com>
In-Reply-To: <200510191423.42922.jhb@freebsd.org>
References:  <200510191623.j9JGNSfr007356@magus.nostrum.com> <200510191304.28422.jhb@freebsd.org> <20051019184900.R60849@fledge.watson.org> <200510191423.42922.jhb@freebsd.org>

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> After it panic'd early in the boot because hptlock wasn't in the  
> spinlock
> order list. :)
> Also, Philip, INVARIANTS requires INVARIANT_SUPPORT, which is why  
> you had the
> error with _sx_assert().

Ah, I saw that, but was trying to get something out before a (very)  
early weekend out with family, so I apologize for not following up on  
INVARIANT_SUPPORT before posting...I have a kernel with those  
compiling right now.


On Wednesday 19 October 2005 01:49 pm, Robert Watson wrote:
> Could I have you try the following DDB commands also:
>    show alllocks
>    traceall
>
> It's possible that 'traceall' isn't present in RC1, in which case it
> will be present in RC2.  Regardless, the output of "show alllocks"
> would be helpful.
>
> I'll read some code this evening and ponder.

On Wed, 19 Oct 2005, John Baldwin wrote:
> He'll need witness for 'show alllocks' but that will require having  
> the
> 'hptlock' spin mutex added to witness' spin lock order.  Also, the
> psuedo-rw lock phk created for filedesc isn't witness checked since it
> isn't a mutex or sx lock, and it maybe that there is a reversal
> involving that lock, but it will be tricky to tell if that is the  
> case.

I'll watch for the change that will allow me to compile with WITNESS  
and post an update as soon as I can with the extra debug data.


Thank you both for your rapid replies,

Philip




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