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Date: Wed, 29 Jul 2009 16:55:45 +0300
From: Andriy Gapon <avg@icyb.net.ua>
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To: Thomas Backman <serenity@exscape.org>
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Cc: freebsd-fs@FreeBSD.org, FreeBSD current <freebsd-current@FreeBSD.org>,
	Pawel Jakub Dawidek <pjd@FreeBSD.org>
Subject: Re: zfs: Fatal trap 12: page fault while in kernel mode
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on 29/07/2009 16:52 Thomas Backman said the following:
>>
>> It would be useful to get line number in frame 13 and examine sx
>> object in frame
>> 11, esp. sx_lock field.
>>
>> -- 
>> Andriy Gapon
> The "this" (above) was referring to variable values not being available
> in a vmcore. :)
> 
> The zfs module appears to be built with symbols, and the symbols appear
> to be loaded in kgdb:
> 
> Reading symbols from /boot/kernel/zfs.ko...Reading symbols from
> /bootdir/boot/kernel/zfs.ko.symbols...done. done.
> Loaded symbols for /boot/kernel/zfs.ko
> Reading symbols from /boot/kernel/opensolaris.ko...Reading symbols from
> /bootdir/boot/kernel/opensolaris.ko.symbols...done. done.
> Loaded symbols for /boot/kernel/opensolaris.ko
> 
> I didn't build the module(s) individually, either; in the previous
> cases, it was a clean buildworld/buildkernel (even with rm -rf
> /usr/obj/* beforehand), and in this case "just" a buildkernel (no manual
> cleaning, but no -DNO_CLEAN either).

Got it. No idea unfortunately :(
Could you still please examine sx in frame 11?

-- 
Andriy Gapon