[patch V5 00/12] uaccess: Provide and use scopes for user access

[Christophe Leroy]

Le 27/10/2025 à 09:43, Thomas Gleixner a écrit :
> This is a follow up on the V4 feedback:
> 
>     https://lore.kernel.org/20251022102427.400699796@linutronix.de
> 
> Changes vs. V4:
> 
>    - Rename get/put_user_masked() to get/put_user_inline()
> 
>    - Remove the futex helpers. Keep the inline get/put for now as it needs
>      more testing whether they are really valuable.
> 
>    - Picked up tags
> 
> 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/scoped
> 

move_addr_to_user() in net/socket.c and put_cmsg() in net/core/scm.c 
should be converted as well

Christophe

> 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_inline()
>        coccinelle: misc: Add scoped_masked_$MODE_access() checker script
>        futex: Convert to get/put_user_inline()
>        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                      |  314 ++++++++++++++++++++++++++-
>   kernel/futex/core.c                          |    4
>   kernel/futex/futex.h                         |   58 ----
>   scripts/coccinelle/misc/scoped_uaccess.cocci |  108 +++++++++
>   11 files changed, 501 insertions(+), 128 deletions(-)
>