linux-kernel - Re: [PATCH v2 12/18] uaccess: fix type mismatch warnings from access

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Date:   Thu, 24 Feb 2022 22:30:31 -0600
From:   Dinh Nguyen <dinguyen@...nel.org>
To:     Arnd Bergmann <arnd@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>, linux-arch@...r.kernel.org,
        linux-mm@...ck.org, linux-api@...r.kernel.org, arnd@...db.de,
        linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk
Cc:     linux@...linux.org.uk, will@...nel.org, guoren@...nel.org,
        bcain@...eaurora.org, geert@...ux-m68k.org, monstr@...str.eu,
        tsbogend@...ha.franken.de, nickhu@...estech.com,
        green.hu@...il.com, shorne@...il.com, deller@....de,
        mpe@...erman.id.au, peterz@...radead.org, mingo@...hat.com,
        mark.rutland@....com, hca@...ux.ibm.com, dalias@...c.org,
        davem@...emloft.net, richard@....at, x86@...nel.org,
        jcmvbkbc@...il.com, ebiederm@...ssion.com,
        akpm@...ux-foundation.org, ardb@...nel.org,
        linux-alpha@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        linux-csky@...r.kernel.org, linux-hexagon@...r.kernel.org,
        linux-ia64@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-mips@...r.kernel.org, openrisc@...ts.librecores.org,
        linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-um@...ts.infradead.org, linux-xtensa@...ux-xtensa.org,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v2 12/18] uaccess: fix type mismatch warnings from
 access_ok()



On 2/16/22 07:13, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> On some architectures, access_ok() does not do any argument type
> checking, so replacing the definition with a generic one causes
> a few warnings for harmless issues that were never caught before.
> 
> Fix the ones that I found either through my own test builds or
> that were reported by the 0-day bot.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>   arch/arc/kernel/process.c           |  2 +-
>   arch/arm/kernel/swp_emulate.c       |  2 +-
>   arch/arm/kernel/traps.c             |  2 +-
>   arch/csky/kernel/signal.c           |  2 +-
>   arch/mips/sibyte/common/sb_tbprof.c |  6 +++---
>   arch/nios2/kernel/signal.c          | 20 +++++++++++---------

Acked-by: Dinh Nguyen <dinguyen@...nel.org>