linux-kernel - Re: [PATCH] capabilities: fix sparse warning about _

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Date:   Mon, 19 Jun 2023 17:47:54 -0400
From:   Paul Moore <paul@...l-moore.com>
To:     "Serge E. Hallyn" <serge@...lyn.com>
Cc:     Ben Dooks <ben.dooks@...ethink.co.uk>,
        linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] capabilities: fix sparse warning about __user access

On Mon, Jun 19, 2023 at 1:57 PM Serge E. Hallyn <serge@...lyn.com> wrote:
>
> On Mon, Jun 19, 2023 at 01:35:35PM +0100, Ben Dooks wrote:
> > The two syscalls for capget and capset are producing sparse warnings
> > as sparse is thinking that the "struct __user_cap_data_struct" is marked
> > user, which seems to be down to the declaration and typedef at the same
> > time.
> >
> > Fix the following warnings by splutting the struct declaration and then
> > the user typedef into two:
>
> I'm not a fan of making code changes to work around scanners'
> shortcomings, mainly because eventually I assume the scanners
> will learn to deal with it.
>
> However, I don't like the all-in-one typedef+struct definition
> either, so let's go with it :)
>
> Paul, do you mind picking this up?

Sure, no problem.  Since we are at -rc7, I'm assuming this can wait
until after the merge window?

-- 
paul-moore.com