[patch V4 00/12] uaccess: Provide and use scopes for user access

From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: "kernel test robot" <lkp@intel.com>,
	"Russell King" <linux@armlinux.org.uk>,
	linux-arm-kernel@lists.infradead.org,
	"Linus Torvalds" <torvalds@linux-foundation.org>,
	x86@kernel.org, "Madhavan Srinivasan" <maddy@linux.ibm.com>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Nicholas Piggin" <npiggin@gmail.com>,
	"Christophe Leroy" <christophe.leroy@csgroup.eu>,
	linuxppc-dev@lists.ozlabs.org, "Paul Walmsley" <pjw@kernel.org>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	linux-riscv@lists.infradead.org,
	"Heiko Carstens" <hca@linux.ibm.com>,
	"Christian Borntraeger" <borntraeger@linux.ibm.com>,
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	linux-s390@vger.kernel.org,
	"Mathieu Desnoyers" <mathieu.desnoyers@efficios.com>,
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	"Julia Lawall" <Julia.Lawall@inria.fr>,
	"Nicolas Palix" <nicolas.palix@imag.fr>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Darren Hart" <dvhart@infradead.org>,
	"Davidlohr Bueso" <dave@stgolabs.net>,
	"André Almeida" <andrealmeid@igalia.com>,
	"Alexander Viro" <viro@zeniv.linux.org.uk>,
	"Christian Brauner" <brauner@kernel.org>,
	"Jan Kara" <jack@suse.cz>,
	linux-fsdevel@vger.kernel.org
Subject: [patch V4 00/12] uaccess: Provide and use scopes for user access
Date: Wed, 22 Oct 2025 14:49:02 +0200 (CEST)	[thread overview]
Message-ID: <20251022102427.400699796@linutronix.de> (raw)

This is a follow up on the V3 feedback:

   https://lore.kernel.org/20251017085938.150569636@linutronix.de

Changes vs. V3:

  - Remove the superflouous if (1) in the scope macro - Andrew

  - Use asm_inline in the x86 conversion - Andrew

  - Rename to scoped_user_*_access(), remove underscores, use a void
    intermediate pointer and add a comment vs. access range - David

  - Use read scope in select - PeterZ

  - Fix comments, shorten local variables and remove pointless brackets -
    Mathieu

  - Simplify the coccinelle script, which needs still more polishing -
    Julia

The series is based on v6.18-rc1 and also available from git:

    git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git uaccess/masked

Thanks,

	tglx
---
Thomas Gleixner (12):
      ARM: uaccess: Implement missing __get_user_asm_dword()
      uaccess: Provide ASM GOTO safe wrappers for unsafe_*_user()
      x86/uaccess: Use unsafe wrappers for ASM GOTO
      powerpc/uaccess: Use unsafe wrappers for ASM GOTO
      riscv/uaccess: Use unsafe wrappers for ASM GOTO
      s390/uaccess: Use unsafe wrappers for ASM GOTO
      uaccess: Provide scoped user access regions
      uaccess: Provide put/get_user_scoped()
      coccinelle: misc: Add scoped_$MODE_access() checker script
      futex: Convert to scoped user access
      x86/futex: Convert to scoped user access
      select: Convert to scoped user access
---
 arch/arm/include/asm/uaccess.h               |   26 ++
 arch/powerpc/include/asm/uaccess.h           |    8 
 arch/riscv/include/asm/uaccess.h             |    8 
 arch/s390/include/asm/uaccess.h              |    4 
 arch/x86/include/asm/futex.h                 |   75 ++----
 arch/x86/include/asm/uaccess.h               |   12 -
 fs/select.c                                  |   12 -
 include/linux/uaccess.h                      |  308 ++++++++++++++++++++++++++-
 kernel/futex/futex.h                         |   37 ---
 scripts/coccinelle/misc/scoped_uaccess.cocci |  108 +++++++++
 10 files changed, 492 insertions(+), 106 deletions(-)