From: Kees Cook <keescook@chromium.org>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH v3 1/2] minmax: sanity check constant bounds when clamping
Date: Mon, 26 Sep 2022 11:26:03 -0700 [thread overview]
Message-ID: <202209261125.8AEBF245@keescook> (raw)
In-Reply-To: <20220926133435.1333846-1-Jason@zx2c4.com>
On Mon, Sep 26, 2022 at 03:34:34PM +0200, Jason A. Donenfeld wrote:
> The clamp family of functions only makes sense if hi>=lo. If hi and lo
> are compile-time constants, then raise a build error. Doing so has
> already caught buggy code. This also introduces the infrastructure to
> improve the clamping function in subsequent commits.
>
> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Kees Cook <keescook@chromium.org>
> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
next prev parent reply other threads:[~2022-09-26 18:27 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-23 10:06 [PATCH] minmax: clamp more efficiently by avoiding extra comparison Jason A. Donenfeld
2022-09-23 10:35 ` Andy Shevchenko
2022-09-23 10:40 ` Jason A. Donenfeld
2022-09-23 10:48 ` Jason A. Donenfeld
2022-09-23 15:12 ` Andy Shevchenko
2022-09-23 15:13 ` Jason A. Donenfeld
2022-09-23 15:40 ` [PATCH v2] " Jason A. Donenfeld
2022-09-23 16:41 ` Kees Cook
2022-09-23 16:42 ` Jason A. Donenfeld
2022-09-23 16:53 ` Andy Shevchenko
2022-09-23 16:54 ` Jason A. Donenfeld
2022-09-23 19:47 ` Kees Cook
2022-09-23 22:54 ` Andrew Morton
2022-09-24 0:02 ` Kees Cook
2022-09-24 10:37 ` Jason A. Donenfeld
2022-09-25 16:29 ` Andrew Morton
2022-09-26 10:00 ` Andy Shevchenko
2022-09-26 12:23 ` Jason A. Donenfeld
2022-09-26 13:34 ` [PATCH v3 1/2] minmax: sanity check constant bounds when clamping Jason A. Donenfeld
2022-09-26 13:34 ` [PATCH v3 2/2] minmax: clamp more efficiently by avoiding extra comparison Jason A. Donenfeld
2022-09-26 18:30 ` Kees Cook
2022-09-26 21:33 ` Jason A. Donenfeld
2022-09-26 13:46 ` [PATCH v3 1/2] minmax: sanity check constant bounds when clamping Andy Shevchenko
2022-09-26 18:26 ` Kees Cook [this message]
2022-10-04 13:41 ` Jason A. Donenfeld
2022-10-04 14:39 ` Kees Cook
2022-10-04 15:01 ` Jason A. Donenfeld
2022-09-26 18:30 ` [PATCH v2] minmax: clamp more efficiently by avoiding extra comparison Kees Cook
2022-09-23 15:10 ` [PATCH] " Andy Shevchenko
2022-09-23 15:11 ` Jason A. Donenfeld
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