From: Kees Cook <kees@kernel.org>
To: David Laight <david.laight.linux@gmail.com>
Cc: linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH next 2/3] fortify: Optimise strnlen()
Date: Tue, 31 Mar 2026 16:51:26 -0700 [thread overview]
Message-ID: <202603311650.A59396A@keescook> (raw)
In-Reply-To: <20260331230914.43698e74@pumpkin>
On Tue, Mar 31, 2026 at 11:09:14PM +0100, David Laight wrote:
> Any uses should be replaced by __builtin_strlen().
When I looked at this before, __builtin_strlen() flip to run-time strlen
on non-constant strings, which is why I had to jump through all the
hoops to avoid calling it in those cases.
--
Kees Cook
next prev parent reply other threads:[~2026-03-31 23:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-30 13:20 [PATCH next 0/3] fortify: Minor changes to strlen() and strnlen() david.laight.linux
2026-03-30 13:20 ` [PATCH next 1/3] fortify: replace __compiletime_lessthan() with statically_true() david.laight.linux
2026-03-30 23:50 ` Kees Cook
2026-03-30 13:20 ` [PATCH next 2/3] fortify: Optimise strnlen() david.laight.linux
2026-03-30 23:54 ` Kees Cook
2026-03-31 22:09 ` David Laight
2026-03-31 23:51 ` Kees Cook [this message]
2026-04-01 13:48 ` David Laight
2026-04-03 8:50 ` David Laight
2026-03-31 6:36 ` Kees Cook
2026-03-31 10:14 ` David Laight
2026-03-31 14:55 ` David Laight
2026-03-31 15:56 ` Kees Cook
2026-04-01 0:15 ` kernel test robot
2026-04-03 8:23 ` David Laight
2026-03-30 13:20 ` [PATCH next 3/3] fortify: Simplify strlen() logic david.laight.linux
2026-03-31 6:07 ` Kees Cook
2026-03-31 8:58 ` David Laight
2026-03-31 6:18 ` Kees Cook
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