linux-kernel - Re: [PATCH] gve: Fix the size used in a 'dma_free

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Message-ID: <CA+FuTSf4hKkS4n5ncLFaBZjGtzVrnneztGmYpzPnwD+xs-scnQ@mail.gmail.com>
Date:   Tue, 4 Aug 2020 09:16:22 +0200
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Joe Perches <joe@...ches.com>, Jakub Kicinski <kuba@...nel.org>,
        Catherine Sullivan <csully@...gle.com>,
        Sagi Shahar <sagis@...gle.com>,
        Jon Olson <jonolson@...gle.com>,
        David Miller <davem@...emloft.net>,
        Luigi Rizzo <lrizzo@...gle.com>,
        Network Development <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] gve: Fix the size used in a 'dma_free_coherent()' call

On Mon, Aug 3, 2020 at 9:50 PM Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
>
> Le 03/08/2020 à 21:35, Joe Perches a écrit :
> > On Mon, 2020-08-03 at 21:19 +0200, Christophe JAILLET wrote:
> >> Le 03/08/2020 à 17:41, Jakub Kicinski a écrit :
> >>> On Sun,  2 Aug 2020 16:15:23 +0200 Christophe JAILLET wrote:
> >>>> Update the size used in 'dma_free_coherent()' in order to match the one
> >>>> used in the corresponding 'dma_alloc_coherent()'.
> >>>>
> >>>> Fixes: 893ce44df5 ("gve: Add basic driver framework for Compute Engine Virtual NIC")
> >>>> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> >>>
> >>> Fixes tag: Fixes: 893ce44df5 ("gve: Add basic driver framework for Compute Engine Virtual NIC")
> >>> Has these problem(s):
> >>>     - SHA1 should be at least 12 digits long
> >>>       Can be fixed by setting core.abbrev to 12 (or more) or (for git v2.11
> >>>       or later) just making sure it is not set (or set to "auto").
> >>>
> >>
> >> Hi,
> >>
> >> I have git 2.25.1 and core.abbrev is already 12, both in my global
> >> .gitconfig and in the specific .git/gitconfig of my repo.
> >>
> >> I would have expected checkpatch to catch this kind of small issue.
> >> Unless I do something wrong, it doesn't.
> >>
> >> Joe, does it make sense to you and would one of the following patch help?
> >
> > 18 months ago I sent:
> >
> > https://lore.kernel.org/lkml/40bfc40958fca6e2cc9b86101153aa0715fac4f7.camel@perches.com/
> >
> >
> >
>
> Looks like the same spirit.
> I've not tested, but doesn't the:
>     ($line =~ /(?:\s|^)[0-9a-f]{12,40}(?:[\s"'\(\[]|$)/i &&
> at the top short cut the rest of the regex?
>
> I read it as "the line should have something that looks like a commit id
> of 12+ char to process further".
>
> So smaller commit id would not be checked.
> Did I miss something?
>
>
> Basically, my proposal is to replace this 12 by a 5 in order to accept
> smaller strings before checking if it looks well formatted or not.

My attempt from a few years ago: https://lore.kernel.org/patchwork/patch/911726/