linux-hardening - Re: [PATCH] randomize_kstack: Improve entropy diffusion

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Message-Id: <171218074192.1346108.13742168050970266873.b4-ty@chromium.org>
Date: Wed,  3 Apr 2024 14:45:45 -0700
From: Kees Cook <keescook@...omium.org>
To: Jeremy Linton <jeremy.linton@....com>,
	Kees Cook <keescook@...omium.org>
Cc: Arnd Bergmann <arnd@...db.de>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	linux-hardening@...r.kernel.org,
	Elena Reshetova <elena.reshetova@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] randomize_kstack: Improve entropy diffusion

On Sat, 09 Mar 2024 12:24:48 -0800, Kees Cook wrote:
> The kstack_offset variable was really only ever using the low bits for
> kernel stack offset entropy. Add a ror32() to increase bit diffusion.
> 
> 

Applied to for-next/hardening:

[1/1] randomize_kstack: Improve entropy diffusion
      https://git.kernel.org/kees/c/9c573cd31343

-- 
Kees Cook