From: David Laight <David.Laight@ACULAB.COM>
To: 'Kees Cook' <keescook@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Martin Uecker <Martin.Uecker@med.uni-goettingen.de>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Randy Dunlap <rdunlap@infradead.org>,
Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
"Ingo Molnar" <mingo@kernel.org>, Ian Abbott <abbotti@mev.co.uk>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kernel-hardening@lists.openwall.com"
<kernel-hardening@lists.openwall.com>
Subject: RE: [PATCH v6] kernel.h: Retain constant expression output for max()/min()
Date: Tue, 27 Mar 2018 08:55:55 +0000 [thread overview]
Message-ID: <0c29e85f7fa64ff488d60b0f5647257b@AcuMS.aculab.com> (raw)
In-Reply-To: <20180326221554.GA45166@beast>
From: Kees Cook
> Sent: 26 March 2018 23:16
...
> +#define __typecheck(x, y) \
> + (!!(sizeof((typeof(x)*)1 == (typeof(y)*)1)))
The two 1 should probably be at least 8 before the compiler starts
bleating about accesses to misaligned addresses being undefined.
David
next prev parent reply other threads:[~2018-03-27 8:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-26 22:15 Kees Cook
2018-03-27 0:52 ` Linus Torvalds
2018-03-27 12:00 ` Uecker, Martin
2018-03-27 5:47 ` Ingo Molnar
2018-03-31 4:57 ` Kees Cook
2018-03-31 5:34 ` Ingo Molnar
2018-03-31 13:37 ` Kees Cook
2018-03-27 8:55 ` David Laight [this message]
2018-03-27 10:03 ` Miguel Ojeda
2018-03-27 10:43 ` kbuild test robot
2018-03-27 18:39 ` kbuild test robot
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