From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B4FB030C62F; Mon, 15 Sep 2025 14:29:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757946590; cv=none; b=RrYbsyRnd3ZFfr5HEreqhHlIClLH2WB5FxmmcNtJghxPg2ZThKErryZeeFkERvdQMfhfXd4Ec1QpssIFKukSC211ZzcTAsVPaQE26USJcELn2K/ACqHtPL8wg25AikLkDbxJ1jb/uUA77MhFgwo2lKtT01EkSNRZLdd3Aeg6ZR8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757946590; c=relaxed/simple; bh=7lI5MZHznx5ErIR/NXuFs+vw+Oq/SkPWnTHMUhPjQl0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QzQLqJUYowmbsTfbV+Qo5UYxBb5RlGNUk9f1vpSsNxRUTSilrY7uKN4tAYBA+7q8ebkfphduyQN35izNqwCEqYay0E83Xs59SW1EGzoWln2Sx4e9DkNhxyfymXZVaexs0rzWb+5Xh9ZsmAvNeKsiPu3GPwfhEucVL5NS6wxcxQE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RAK1rDeA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RAK1rDeA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CDFF0C4CEF1; Mon, 15 Sep 2025 14:29:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757946590; bh=7lI5MZHznx5ErIR/NXuFs+vw+Oq/SkPWnTHMUhPjQl0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=RAK1rDeAsbkVB1QN1pawukGo03AAEGBrU9s0pA9ityTV+p+baNry4RLRRrbOSVkNP teQ8GcIaWRWIfcyvrPvC/uH1j8tGZ9MbmtEKdQasecFybVogEfiYpKZnxPM1lvBHyA rMQqwWf9gnaThMz1rbkU37dCcxChkuJQ3bXTUx4gsImlfcpzIcc6iVMPyFwR28Lrr5 2BMh+JaYnOx/6Gm4aNTdzk3wfDtlJddMsT6sstoxOPJzHGM3iwYk8QXhBveSDse1Eq j6C25OM55yTiDV9v/gCsb5sQxkbBvBxZPahokEDSIZAlQWvzACphHCNFEGY+aL2i3O pjZa2cqjefIow== Date: Mon, 15 Sep 2025 16:29:41 +0200 From: Christian Brauner To: Mark Brown Cc: Kees Cook , "Rick P. Edgecombe" , Deepak Gupta , Szabolcs Nagy , "H.J. Lu" , Florian Weimer , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Shuah Khan , linux-kernel@vger.kernel.org, Catalin Marinas , Will Deacon , jannh@google.com, Andrew Morton , Yury Khrustalev , Wilco Dijkstra , linux-kselftest@vger.kernel.org, linux-api@vger.kernel.org Subject: Re: [PATCH v20 4/8] fork: Add shadow stack support to clone3() Message-ID: <20250915-aneignen-notdienst-c901d4b6df24@brauner> References: <20250902-clone3-shadow-stack-v20-0-4d9fff1c53e7@kernel.org> <20250902-clone3-shadow-stack-v20-4-4d9fff1c53e7@kernel.org> <20250905-nutria-befund-2f3e92003734@brauner> <0ff8b70e-283f-4d56-8bab-bcae11cd5bdb@sirena.org.uk> <202509050900.8A01B1E6@keescook> <8caf310a-7179-4d4f-be73-2e25496a915f@sirena.org.uk> Precedence: bulk X-Mailing-List: linux-api@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <8caf310a-7179-4d4f-be73-2e25496a915f@sirena.org.uk> 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