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Date: Mon, 25 Mar 2013 23:14:04 -0400 (EDT)
From: AN <andy@neu.net>
To: Alexander Kabaev <kabaev@gmail.com>
Subject: Re: kernel panic - Fatal Trap 12 on boot @svn 248711
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On Mon, 25 Mar 2013, Alexander Kabaev wrote:

> On Mon, 25 Mar 2013 21:21:07 -0400 (EDT)
> AN <andy@neu.net> wrote:
>
>>
>>
>> On Mon, 25 Mar 2013, Alexander Kabaev wrote:
>>
>>> On Mon, 25 Mar 2013 21:06:09 -0400 (EDT)
>>> AN <andy@neu.net> wrote:
>>>
>>>>
>>>> After updating to svn 248711 I am getting a kernel panic and reboot
>>>> when booting my system.  The last line I see while booting is:
>>>>
>>>> Entropy harvesting interrupts: Ethernet point to point, and then
>>>> Fatal Trap 12 in kernel mode
>>>> then an automatic reboot.
>>>>
>>>> I am currently booting into kernel.old @svn FreeBSD FBSD10
>>>> 10.0-CURRENT FreeBSD 10.0-CURRENT #38 r248401: Sat Mar 16 21:39:04
>>>> CDT 2013 root@FBSD10:/usr/obj/usr/src/sys/MYKERNEL  amd64
>>>>
>>>> Is anyone else seeing this behavior?
>>>>
>>>> _______________________________________________
>>>> freebsd-current@freebsd.org mailing list
>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-current
>>>> To unsubscribe, send any mail to
>>>> "freebsd-current-unsubscribe@freebsd.org"
>>>
>>> You run dconschat by any chance?
>>>
>>> --
>>> Alexander Kabaev
>>>
>>
>> Hi Alexander:
>>
>> No, I do not think so.  How can I tell?  I have never intentionally
>> configured it.
>
>
> Then you probably are not running it and the and the question is moot.
> I would suggest trying r248712 anyway, just for kicks. If that does not
> help, then try with vfs.unmapped_buf_allowed="0" in loader.conf.
>
> -- 
> Alexander Kabaev
>

I tried svn 248712, but I still get a panic and auto reboot.  So up to svn 
248712 is broken on my system.  The only way I can boot is to use 
kernel.old @svn 248401.