linux-kernel - Re: [PATCH] kasan: update function name in comments

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Date:   Thu, 24 Feb 2022 00:35:32 +0100
From:   Marco Elver <elver@...gle.com>
To:     Peter Collingbourne <pcc@...gle.com>
Cc:     Miaohe Lin <linmiaohe@...wei.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Andrey Konovalov <andreyknvl@...il.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH] kasan: update function name in comments

On Wed, 23 Feb 2022 at 23:31, Peter Collingbourne <pcc@...gle.com> wrote:
[...]
> > > > Link: https://linux-review.googlesource.com/id/I20faa90126937bbee77d9d44709556c3dd4b40be
> > > > Signed-off-by: Peter Collingbourne <pcc@...gle.com>
> > > > Fixes: e5f4728767d2 ("kasan: test: add globals left-out-of-bounds test")
> > >
> > > This Fixes tag is unneeded.
> > >
> > > Except the above nit, this patch looks good to me. Thanks.
> > >
> > > Reviewed-by: Miaohe Lin <linmiaohe@...wei.com>
> >
> > Reviewed-by: Marco Elver <elver@...gle.com>
> >
> > And yes, the Fixes tag should be removed to not have stable teams do
> > unnecessary work.
>
> I thought that Cc: stable@...r.kernel.org controlled whether the patch
> is to be taken to the stable kernel and Fixes: was more of an
> informational tag. At least that's what this seems to say:
> https://www.kernel.org/doc/html/latest/process/submitting-patches.html#reviewer-s-statement-of-oversight

These days patches that just have a Fixes tag (and no Cc: stable) will
be auto-picked in many (most?) cases (by empirical observation).

I think there were also tree-specific variances of this policy, but am
not sure anymore. What is the latest policy?

> > +Cc'ing missing mailing lists (use get_maintainers.pl - in particular,
> > LKML is missing, which should always be Cc'd for archival purposes so
> > that things like b4 can work properly).
>
> get_maintainers.pl tends to list a lot of reviewers so I try to filter
> it to only the most important recipients or only use it for
> "important" patches (like the uaccess logging patch). It's also a bit
> broken in my workflow --
> https://lore.kernel.org/all/20210913233435.24585-1-pcc@google.com/
> fixes one of the problems but there are others.

That's fair. It just seemed that something went wrong given
kasan-dev@...glegroups.com wasn't Cc'd. FWIW, syzbot uses
'get_maintainer.pl --git-min-percent=20' which is a bit less
aggressive with Cc'ing folks not mentioned explicitly in MAINTAINERS.

> Doesn't b4 scan all the mailing lists? So I'd have imagined it
> wouldn't matter which one you send it to.

Those under lore.kernel.org or lists.linux.dev. Seems linux-mm does
get redirected to lore: https://lore.kernel.org/linux-mm/ -- It's not
entirely obvious which are lore managed and which aren't (obviously
things like kasan-dev@...glegroups.com aren't).