linux-kernel - Re: [PATCH] powerpc/signal32: Use struct

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Message-Id: <163888363674.3690807.16904122616287532498.b4-ty@ellerman.id.au>
Date:   Wed, 08 Dec 2021 00:27:16 +1100
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Kees Cook <keescook@...omium.org>
Cc:     Nicholas Piggin <npiggin@...il.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        linux-hardening@...r.kernel.org,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Paul Mackerras <paulus@...ba.org>,
        kernel test robot <lkp@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        linuxppc-dev@...ts.ozlabs.org,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/signal32: Use struct_group() to zero spe regs

On Thu, 18 Nov 2021 12:36:04 -0800, Kees Cook wrote:
> In preparation for FORTIFY_SOURCE performing compile-time and run-time
> field bounds checking for memset(), avoid intentionally writing across
> neighboring fields.
> 
> Add a struct_group() for the spe registers so that memset() can correctly reason
> about the size:
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/signal32: Use struct_group() to zero spe regs
      https://git.kernel.org/powerpc/c/62ea67e31981bca95ec16c37e2a1fba68f3dd8c5

cheers