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Date: Sat, 7 Nov 2015 18:07:36 -0800 (PST)
From: Don Lewis <truckman@FreeBSD.org>
Subject: Re: strange kernel crash
To: bdrewery@FreeBSD.org
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On  7 Nov, Bryan Drewery wrote:
> On 11/7/2015 3:08 PM, Andriy Gapon wrote:
>> On 07/11/2015 21:48, Bryan Drewery wrote:
>>> On 11/6/15 3:20 AM, Andriy Gapon wrote:
>>>> Unread portion of the kernel message buffer:
>>>>
>>>> Fatal trap 1: privileged instruction fault while in kernel mode
>>> ...
>>>
>>> What SVN revision?
>> 
>> r289875 from October 24.
>> 
> 
> I ask because I fixed an uninitialized ptr write in the kernel in
> r290155 on October 29th. I would only expect it to happen in low memory
> situations.

I haven't seen it since I upgraded from r290039 Tue Oct 27 to r290224
Sat Oct 31.  I can believe that low memory would trigger it since I
often it uses zfs and I sometimes drive it heavily into swap (using
tmpfs) when running poudriere with parallel builds.  The timing makes
sense because the bug was introduce by r289279, and before r290039 I had
been running r289123 without having any problems.