linux-kernel - Re: [PATCH] thread_info: suppress sparse warning in check_copy

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Message-ID: <CAExDi1QnPdUfrLgAzJUq=4ZQ9r+cLF26oyq=rm20bLj0XAYZiQ@mail.gmail.com>
Date:   Fri, 28 Jul 2017 11:16:49 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     AbdAllah-MEZITI <abdallah.meziti.pro@...il.com>, luto@...nel.org,
        Mark Rutland <mark.rutland@....com>,
        Kees Cook <keescook@...omium.org>,
        Ingo Molnar <mingo@...nel.org>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Kyle Huey <me@...ehuey.com>,
        Sahara <keun-o.park@...kmatter.ae>,
        Al Viro <viro@...iv.linux.org.uk>,
        lkml <linux-kernel@...r.kernel.org>,
        Linux-Sparse <linux-sparse@...r.kernel.org>,
        Lance Richardson <lrichard@...hat.com>,
        Johannes Berg <johannes@...solutions.net>
Subject: Re: [PATCH] thread_info: suppress sparse warning in check_copy_size()

On Thu, Jul 27, 2017 at 12:41 AM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> This is wrong. The sparse version of __compiletime_object_size()
> should just be fixed to take a 'const' pointer without complaints.

The underlying __builtin_object_size() has been fixed in the sparse tree
6 months ago or so.

-- Luc