linux-kernel - Re: [Intel-gfx] linux-next: Signed-off-by missing for commit in the drm-intel tree

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Message-ID: <YROc0KkBbuAwrx0f@phenom.ffwll.local>
Date:   Wed, 11 Aug 2021 11:48:00 +0200
From:   Daniel Vetter <daniel@...ll.ch>
To:     Jani Nikula <jani.nikula@...ux.intel.com>
Cc:     Daniel Vetter <daniel@...ll.ch>,
        Matt Roper <matthew.d.roper@...el.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        DRI <dri-devel@...ts.freedesktop.org>,
        Intel Graphics <intel-gfx@...ts.freedesktop.org>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: [Intel-gfx] linux-next: Signed-off-by missing for commit in the
 drm-intel tree

On Wed, Aug 11, 2021 at 10:16:41AM +0300, Jani Nikula wrote:
> On Tue, 10 Aug 2021, Daniel Vetter <daniel@...ll.ch> wrote:
> > On Mon, Aug 09, 2021 at 09:19:39AM -0700, Matt Roper wrote:
> >> On Mon, Aug 09, 2021 at 04:05:59PM +0200, Daniel Vetter wrote:
> >> > On Fri, Aug 06, 2021 at 09:36:56AM +0300, Joonas Lahtinen wrote:
> >> > > Hi Matt,
> >> > > 
> >> > > Always use the dim tooling when applying patches, it will do the right
> >> > > thing with regards to adding the S-o-b.
> >> > 
> >> > fd.o server rejects any pushes that haven't been done by dim, so how did
> >> > this get through?
> >> 
> >> I definitely used dim for all of these patches, but I'm not sure how I
> >> lost my s-o-b on this one.  Maybe when I edited the commit message after
> >> 'dim extract-tags' I accidentally deleted an extra line when I removed
> >> the extract-tags marker?  It's the only patch where the line is missing,
> >> so it's almost certainly human error on my part rather than something
> >> dim did wrong.
> >
> > Yeah that's an expected failure model, and dim is supposed to catch that
> > by rechecking for sobs when you push. See dim_push_branch ->
> > checkpatch_commit_push_range in dim. So you can hand-edit stuff however
> > you want, dim /should/ catch it when pushing. That it didn't is kinda
> > confusing and I'd like to know why that slipped through.
> 
> One of the failures that happened here was that the commit was part of a
> topic branch that was merged and pushed directly. All merges should
> happen via pull requests on the list, and applied (preferrably by
> maintainers or at least with their acks recorded on the merge) using dim
> apply-pull which should also have the checks.

Ah yes if the merge is applied directly instead of using apply-pull then
that's not good. I guess that's why we have the rule that only maintainers
should handle topic branches ...

Not sure how we can fix this in dim? Maybe a check whether the patches
your pushing contain a merge commit, which prompts an additional query
like

"Merge commits should only be done by repo maintainers, not committers.
Confirm that you are a maintainer of $repo?"

It's not the first time this slipped through and caused some fun. Similar
to how we have the confirmation check if you push a lot of patches.

Thoughts?
-Daniel


> 
> 
> BR,
> Jani.
> 
> >
> >> > Matt, can you pls figure out and type up the patch to
> >> > plug that hole?
> >> 
> >> Are you referring to a patch for dim here?  The i915 patch has already
> >> landed, so we can't change its commit message now.
> >
> > Yeah dim, not drm-intel, that can't be fixed anymore because it's all
> > baked in.
> > -Daniel
> >
> >> 
> >> 
> >> Matt
> >> 
> >> > 
> >> > Thanks, Daniel
> >> > 
> >> > > 
> >> > > Regards, Joonas
> >> > > 
> >> > > Quoting Stephen Rothwell (2021-07-15 07:18:54)
> >> > > > Hi all,
> >> > > > 
> >> > > > Commit
> >> > > > 
> >> > > >   db47fe727e1f ("drm/i915/step: s/<platform>_revid_tbl/<platform>_revids")
> >> > > > 
> >> > > > is missing a Signed-off-by from its committer.
> >> > > > 
> >> > > > -- 
> >> > > > Cheers,
> >> > > > Stephen Rothwell
> >> > 
> >> > -- 
> >> > Daniel Vetter
> >> > Software Engineer, Intel Corporation
> >> > http://blog.ffwll.ch
> >> 
> >> -- 
> >> Matt Roper
> >> Graphics Software Engineer
> >> VTT-OSGC Platform Enablement
> >> Intel Corporation
> >> (916) 356-2795
> 
> -- 
> Jani Nikula, Intel Open Source Graphics Center

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch