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Date: Thu, 28 Nov 2013 01:49:15 -0800 (PST)
From: Don Lewis <truckman@FreeBSD.org>
Subject: Re: panic: double fault with 11.0-CURRENT r258504
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On 28 Nov, Konstantin Belousov wrote:
> On Thu, Nov 28, 2013 at 12:56:37AM -0800, Don Lewis wrote:
>> I haven't figured out how to find the currently installed BIOS version.
>> The motherboard is Abit, which is no more, but I found an archive of all
>> of their downloads.  I'll also check into updates from the Linux world.
> I reviewed the 0xF family revision guide, and stumbled upon errata 122,
> "TLB Flush Filter May Cause Coherency Problem in Multicore Systems".
> You could try the patch at the end of message.

I'll give it a try after my current test run, but it will probably be a
few days before I have results.

>> This machine gets updated every month or so and I've never had stability
>> problems with it until just recently.  It's definitely been using clang
>> for quite a while without any problems other than the ports mess.
> Is it possible to bisect ?

Yes, though that could take quite a while since each iteration will take
about two days.