Re: [PATCH 5.10 125/135] drm/i915: avoid uninitialised var in eb_parse()

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On Wed, Aug 11, 2021 at 02:27:02PM +0200, Pavel Machek wrote:
> On Wed 2021-08-11 09:46:12, Greg Kroah-Hartman wrote:
> > On Wed, Aug 11, 2021 at 09:28:43AM +0200, Pavel Machek wrote:
> > > Hi!
> > > 
> > > > From: Jonathan Gray <jsg@xxxxxxxxx>
> > > > 
> > > > The backport of c9d9fdbc108af8915d3f497bbdf3898bf8f321b8 to 5.10 in
> > > > 6976f3cf34a1a8b791c048bbaa411ebfe48666b1 removed more than it should
> > > > have leading to 'batch' being used uninitialised.  The 5.13 backport and
> > > > the mainline commit did not remove the portion this patch adds back.
> > > 
> > > This patch has no upstream equivalent, right?
> > > 
> > > Which is okay -- it explains it in plain english, but it shows that
> > > scripts should not simply search for anything that looks like SHA and
> > > treat it as upsteam commit it.
> > 
> > Sounds like you have a broken script if you do it that way.
> 
> That is what you told me to do!
> 
> https://lore.kernel.org/stable/YQEvUay+1Rzp04SO@xxxxxxxxx/

Yes, which is fine for matching sha1 values.

> I would happily adapt my script, but there's no
> good/documented/working way to determine upstream commit given -stable
> commit.
> 
> If we could agree on
> 
> Commit: (SHA)
> 
> in the beggining of body, that would be great.
> 
> Upstream: (SHA)
> 
> in sign-off area would be even better.

What exactly are you trying to do when you find a sha1?  For some reason
my scripts work just fine with a semi-free-form way that we currently
have been doing this for the past 17+ years.  What are you attempting to
do that requires such a fixed format?

thanks,

greg k-h



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