linux-kernel - Re: [PATCH v5 00/14] add support for Clang's Shadow Call Stack

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Message-ID: <20191113120337.GA26599@willie-the-truck>
Date:   Wed, 13 Nov 2019 12:03:38 +0000
From:   Will Deacon <will@...nel.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Dave Martin <Dave.Martin@....com>,
        Laura Abbott <labbott@...hat.com>,
        Marc Zyngier <maz@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Jann Horn <jannh@...gle.com>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        clang-built-linux@...glegroups.com,
        kernel-hardening@...ts.openwall.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 00/14] add support for Clang's Shadow Call Stack

On Tue, Nov 12, 2019 at 03:44:42PM -0800, Kees Cook wrote:
> On Tue, Nov 05, 2019 at 03:55:54PM -0800, Sami Tolvanen wrote:
> > This patch series adds support for Clang's Shadow Call Stack
> > (SCS) mitigation, which uses a separately allocated shadow stack
> > to protect against return address overwrites. More information
> 
> Will, Catalin, Mark,
> 
> What's the next step here? I *think* all the comments have been
> addressed. Is it possible to land this via the arm tree for v5.5?

I was planning to queue this for 5.6, given that I'd really like it to
spend some quality time in linux-next.

Will