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Date:      Mon, 24 Jul 2006 17:17:56 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        freebsd-current@freebsd.org
Cc:        Ceri Davies <ceri@submonkey.net>, current@freebsd.org
Subject:   Re: Panic on amd64
Message-ID:  <200607241717.56709.jhb@freebsd.org>
In-Reply-To: <20060723124037.GI64253@submonkey.net>
References:  <20060723124037.GI64253@submonkey.net>

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On Sunday 23 July 2006 08:40, Ceri Davies wrote:
> With yesterday's -HEAD, while doing a simultaneous
> 'portupgrade -a' and a 'make buildworld', with the source and object
> trees for the buildworld on a NFS mount from a 6-STABLE server.
> 
> Kernel config is GENERIC, plus:
> 
> device          cpufreq
> device          puc
> device          sound
> device          snd_via8233
> 
> makeoptions     DEBUG=-g
> options         KDB_UNATTENDED
> 
> This is probably reproducable, as I also experienced a panic yesterday
> while doing the same thing, but I didn't have dumps configured then.

> #8  0xffffffff804a87fe in vfs_ref (mp=0x0) 
at /usr/src/sys/kern/vfs_mount.c:419

This looks to be your problem.  mp is NULL.  Not sure why it is NULL 
though. :)

-- 
John Baldwin



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