From owner-freebsd-hackers@FreeBSD.ORG  Mon Mar 16 10:37:14 2015
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Date: Mon, 16 Mar 2015 11:36:47 +0100
From: Michael Fuckner <michael@fuckner.net>
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To: Konstantin Belousov <kostikbel@gmail.com>
Subject: Re: Server with 3TB Crashing at boot
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Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>,
 Ryan Stone <rysto32@gmail.com>, Steven Hartland <killing@multiplay.co.uk>
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On 03/16/2015 11:31 AM, Konstantin Belousov wrote:
> On Mon, Mar 16, 2015 at 11:17:08AM +0100, Michael Fuckner wrote:
>> Just generated, anything I should test in debugger?
>> Else I'll do the same with STABLE next.
> With stable, it is only interesting if 'fault' lines are gone.
>
>>
>> http://dedi3.fuckner.net/~molli123/temp/head.txt
>>
>> doing minimal network traffic causes the kernel to panic.
> Please do the following:
> gdb kernel.debug (your kernel should be build with makeoptions	DEBUG=-g)
> in gdb do
> (gdb) list *dmar_bus_dmamap_load_buffer+0x53
>

http://dedi3.fuckner.net/~molli123/temp/gdb.txt <- is this what you need?