From owner-freebsd-stable@freebsd.org  Wed Mar 28 15:29:21 2018
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Subject: Re: KBI unexpexted change in stable/11 ?
To: Slawa Olhovchenkov <slw@zxy.spb.ru>, freebsd-stable@freebsd.org
References: <20180328130903.GC6612@zxy.spb.ru>
From: Eric van Gyzen <eric@vangyzen.net>
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Date: Wed, 28 Mar 2018 10:29:10 -0500
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On 03/28/2018 08:09, Slawa Olhovchenkov wrote:
> I am upgrade system to latest -STABLE and now see kernel crash:
> 
> - loading virtualbox modules build on 11.1-RELEASE-p6
> - loading nvidia module build on 11.1-RELEASE-p6 and start xdm
> 
> Is this expected? I am mean about loading modules builded on
> 11.1-RELEASE on any 11.1-STABLE.

This is not expected.  Can you bisect to find the stable/11 commit that
broke this?

If you can roll back to 11.1-RELEASE, you could probably just
buildkernel and installkernel from various points along stable/11.  That
would save a lot of time by avoiding buildworld.

Eric