linux-kernel - Re: help with git bisecting a bug 16376: random - possibly Radeon DRM KMS related

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Message-ID: <20100901181341.GA11861@deepthought>
Date:	Wed, 1 Sep 2010 19:13:41 +0100
From:	Ken Moffat <zarniwhoop@...world.com>
To:	Martin Steigerwald <Martin@...htvoll.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: help with git bisecting a bug 16376: random - possibly Radeon DRM KMS related - freezes

On Wed, Sep 01, 2010 at 06:10:24PM +0200, Martin Steigerwald wrote:
> Am Mittwoch 01 September 2010 schrieb Ken Moffat:
> > 
> >  While you are bisecting, don't believe the version in Makefile.  I
> > got similarly freaked out a couple of years ago - if I understood
> > correctly, it's something to do with when a change was created.
> > 
> >  The key point is that during bisection the apparent version *can*
> > go back to a version that appears to be before the initial "good"
> > kernel.
> 
> I verified the version by running git log after doing the skip. And it was 
> just 300 lines after Linus commited 2.6.33-rc2. Can git log be showing 
> incorrect results during a bisect?
> 
> Thanks,
 I suggest you go with the versions that git bisect selects.

 I appreciate that it takes you a long time to build and test each
kernel, but hopefully you can reach a stage where the bad commit is
identified.

 I think I've seen people report that an old commit was identified
as causing a problem, and I also think that in those cases the
problem was exposed by a later commit.

ken
-- 
das eine Mal als Tragödie, das andere Mal als Farce
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