linux-kernel - Re: [PATCH] coccinelle: put_device: reduce false positives

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Date:   Thu, 28 Mar 2019 15:19:56 +0100 (CET)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
cc:     Julia Lawall <julia.lawall@...6.fr>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Markus Elfring <Markus.Elfring@....de>,
        Wen Yang <wen.yang99@....com.cn>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Yi Wang <wang.yi59@....com.cn>,
        kernel-janitors@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        cocci@...teme.lip6.fr
Subject: Re: [PATCH] coccinelle: put_device: reduce false positives



On Thu, 28 Mar 2019, Masahiro Yamada wrote:

> On Tue, Mar 26, 2019 at 7:16 PM Julia Lawall <julia.lawall@...6.fr> wrote:
> >
> >
> >
> > On Tue, 26 Mar 2019, Dan Carpenter wrote:
> >
> > > On Tue, Mar 26, 2019 at 10:38:43AM +0100, Julia Lawall wrote:
> > > >
> > > >
> > > > On Tue, 26 Mar 2019, Dan Carpenter wrote:
> > > >
> > > > > On Sat, Mar 23, 2019 at 09:06:54PM +0100, Julia Lawall wrote:
> > > > > >
> > > > > >
> > > > > > On Sat, 23 Mar 2019, Markus Elfring wrote:
> > > > > >
> > > > > > > > Don't complain about a return when this function returns "&pdev->dev".
> > > > > > >
> > > > > > > Would this information qualify to add the tag “Fixes” to the commit message?
> > > > > >
> > > > > > Fixes tags relate to stable kernels, so that one can see which stable
> > > > > > kernels a particular patch should be propagated to.  There is no need to
> > > > > > propagate patches on semantic patches to stable kernels.  People who run
> > > > > > stable kernels are interested in their behavior, not the bug finding
> > > > > > rules that they contain.
> > > > >
> > > > > The Fixes tag is not just about stable...  For example, we use them for
> > > > > statistics to see how quickly bugs get fixed etc.
> > > >
> > > > OK.  But still do we need fixes tags for bug finding rules?  Perhaps if
> > > > the previous version was really broken, and it would be really undesirable
> > > > to use it.
> > >
> > > It's not worth resending a patch for that, but I probably would use the
> > > fixes tag.  It depends on your definition of "bug" really...  I tell
> > > people not to use Fixes for spelling mistakes and unused variables.  But
> > > I do use the Fixes tag for things like "an off by one in a sanity check
> > > which doesn't affect run time because the index is always correct".
> >
> > OK, thanks.
> >
> > julia
>
> I added Fixes: tag,
> and applied to linux-kbuild/fixes.

Thanks!

julia

>
> Thanks.
>
> --
> Best Regards
> Masahiro Yamada
>