From owner-freebsd-hackers@FreeBSD.ORG  Fri Aug 30 08:31:42 2013
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Date: Fri, 30 Aug 2013 11:30:09 +0300
From: Andriy Gapon <avg@FreeBSD.org>
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To: Patrick <gibblertron@gmail.com>
Subject: Re: Fatal trap 12 going from 8.2 to 8.4 with ZFS
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on 30/08/2013 11:17 Patrick said the following:
> Hmmmm...
> 
> (kgdb) list *vdev_mirror_child_select+0x67
> No symbol table is loaded.  Use the "file" command.
> 
> Do I need to build the kernel from source myself? This kernel is what
> freebsd-update installed during part 1 of the upgrade.

I don't have an exact recollection of what is installed by freebsd-update - are
*.symbols files installed?

-- 
Andriy Gapon