linux-kernel - Re: [PATCH v20 4/8] fork: Add shadow stack support to clone3()

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Message-ID: <8caf310a-7179-4d4f-be73-2e25496a915f@sirena.org.uk>
Date: Fri, 5 Sep 2025 17:02:33 +0100
From: Mark Brown <broonie@...nel.org>
To: Kees Cook <kees@...nel.org>
Cc: Christian Brauner <brauner@...nel.org>,
	"Rick P. Edgecombe" <rick.p.edgecombe@...el.com>,
	Deepak Gupta <debug@...osinc.com>,
	Szabolcs Nagy <Szabolcs.Nagy@....com>,
	"H.J. Lu" <hjl.tools@...il.com>,
	Florian Weimer <fweimer@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, jannh@...gle.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Yury Khrustalev <yury.khrustalev@....com>,
	Wilco Dijkstra <wilco.dijkstra@....com>,
	linux-kselftest@...r.kernel.org, linux-api@...r.kernel.org
Subject: Re: [PATCH v20 4/8] fork: Add shadow stack support to clone3()

On Fri, Sep 05, 2025 at 09:00:51AM -0700, Kees Cook wrote:
> On Fri, Sep 05, 2025 at 04:43:22PM +0100, Mark Brown wrote:

> > discover the problem fairly rapidly in testing.  ss_token would shorter
> > but the abbreviation is less clear, whatever name you prefer is fine by
> > me.

> Bike shed: shstk_token?

That also works and is fine by me, probably better than my idea.

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