linux-kernel - Re: [PATCH V2 1/2] net: Fixup netif_attrmask_next

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Message-ID: <20221014110330.044bbbf4@kernel.org>
Date:   Fri, 14 Oct 2022 11:03:30 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Yury Norov <yury.norov@...il.com>
Cc:     guoren@...nel.org, andriy.shevchenko@...ux.intel.com,
        davem@...emloft.net, edumazet@...gle.com, pabeni@...hat.com,
        linux@...musvillemoes.dk, caraitto@...gle.com, willemb@...gle.com,
        jonolson@...gle.com, amritha.nambiar@...el.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        Guo Ren <guoren@...ux.alibaba.com>
Subject: Re: [PATCH V2 1/2] net: Fixup netif_attrmask_next_and warning

On Fri, 14 Oct 2022 09:16:01 -0700 Yury Norov wrote:
> > We will not be merging a refactoring series into net to silence an
> > arguably over-eager warning. We need a minimal fix, Guo Ren's patches
> > seem to miss the mark so I reckon the best use of everyone's time is
> > to just drop the exposing patch and retry in -next 🤷  
> 
> If you prefer treating symptoms rather than the disease - I have nothing
> to add.

I don't, but we may consider different things to be "the disease".
Please do not insinuate that I don't care about fixing bugs.

What I can grok from the history and your commit messages is that 
you want to catch people who pass what you consider invalid inputs 
to the helpers, but nothing will crash/OOB access here, because 
the helper double checks that the input is < nr_bits.

So it's a nice cleanup and refactoring, sure, but not an urgent fix
that needs to go to Linus ASAP.

If that's not what you're fixing please explain, I believe I already
asked you to clarify before. And the commit message aren't exactly
informative either.