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Subject: Re: KBI unexpexted change in stable/11 ?
To: Slawa Olhovchenkov <slw@zxy.spb.ru>
Cc: freebsd-stable@freebsd.org
References: <20180328130903.GC6612@zxy.spb.ru>
 <316fb5cd-720b-e62a-cb56-5e9b722d05e9@vangyzen.net>
 <20180328153529.GL4305@zxy.spb.ru>
From: Eric van Gyzen <eric@vangyzen.net>
Message-ID: <0b3b3294-7de4-cb1c-f85b-b846b46e8d75@vangyzen.net>
Date: Wed, 28 Mar 2018 11:16:49 -0500
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On 03/28/2018 10:35, Slawa Olhovchenkov wrote:
> On Wed, Mar 28, 2018 at 10:29:10AM -0500, Eric van Gyzen wrote:
> 
>> 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.
> 
> r325665 is previos point and is good.
> r331615 crashed.
> Can I use some script for bisect?

I'm not aware of a script for this.  The only tool I've used is "git
bisect", which is very handy if you're already familiar with git.

Eric