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[82.69.66.36]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-483c3b89c99sm299471225e9.15.2026.03.02.10.55.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Mar 2026 10:55:12 -0800 (PST) Date: Mon, 2 Mar 2026 18:55:10 +0000 From: David Laight To: Linus Torvalds Cc: "Christophe Leroy (CS GROUP)" , Alexander Viro , Andre Almeida , Andrew Cooper , Christian Borntraeger , Christian Brauner , Christophe Leroy , Darren Hart , Davidlohr Bueso , Heiko Carstens , Jan Kara , Julia Lawall , linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, LKML , Madhavan Srinivasan , Mathieu Desnoyers , Michael Ellerman , Nicholas Piggin , Nicolas Palix , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , Russell King , Sven Schnelle , Thomas Gleixner , x86@kernel.org, Kees Cook , akpm@linux-foundation.org Subject: Re: [PATCH v2 1/5] uaccess: Fix scoped_user_read_access() for 'pointer to const' Message-ID: <20260302185510.6b49a025@pumpkin> In-Reply-To: References: <20260302132755.1475451-1-david.laight.linux@gmail.com> <20260302132755.1475451-2-david.laight.linux@gmail.com> X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; arm-unknown-linux-gnueabihf) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260302_105516_417242_4046EEC6 X-CRM114-Status: GOOD ( 20.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 2 Mar 2026 09:26:31 -0800 Linus Torvalds wrote: > On Mon, 2 Mar 2026 at 06:59, Christophe Leroy (CS GROUP) > wrote: > > > > Can we get this fix merged in 7.0-rc3 so that we can start building 7.1 > > on top of it ? > > Applied this first patch. I'm not so convinced about the others in the > series, although people can always try to argue for them.. Patches 2 and 3 seemed a reasonable idea to me. Removes a lot of code that is only there to make the whole thing work. The 'with' is a bit of a take on Pascal - but without the 'making the code completely unreadable' side effect. I don't do WARN=1 builds, never mind WARN=2 :-) Although -Wshadow can find real bugs - so I would turn it on and suffer the annoyances. Patch 5 was just what I was experimenting with. Doing the equivalent change to the non-compat version (IIRC it uses the (likely) much slower copy_to/from_user() because the structures match) might even be more sensible. David > > Linus