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

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Message-ID: <20250915-aneignen-notdienst-c901d4b6df24@brauner>
Date: Mon, 15 Sep 2025 16:29:41 +0200
From: Christian Brauner <brauner@...nel.org>
To: Mark Brown <broonie@...nel.org>
Cc: Kees Cook <kees@...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 05:02:33PM +0100, Mark Brown wrote:
> 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.

Can you do a quick resend based on kernel-6.18.clone3?
https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git/log/?h=kernel-6.18.clone3