From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Date: Tue, 22 Feb 2022 16:36:15 +0000
Subject: Re: [PATCH v2 09/18] mips: use simpler access_ok()
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To: Arnd Bergmann <arnd@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>, Christoph Hellwig <hch@lst.de>, linux-arch <linux-arch@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>, Linux API <linux-api@vger.kernel.org>, Arnd Bergmann <arnd@arndb.de>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Al Viro <viro@zeniv.linux.org.uk>, Russell King - ARM Linux <linux@armlinux.org.uk>, Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>, Brian Cain <bcain@codeaurora.org>, Geert Uytterhoeven <geert@linux-m68k.org>, Michal Simek <monstr@monstr.eu>, Nick Hu <nickhu@andestech.com>, Greentime Hu <green.hu@gmail.com>, Dinh Nguyen <dinguyen@kernel.org>, Stafford Horne <shorne@gmail.com>, Helge Deller <deller@gmx.de>, Michael Ellerman <mpe@ellerman.id.au>, Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Mark Rutland <mark.rutland@arm.com>, Heiko Carstens <hca@linux.ibm.com>, Rich Felker <dalias@libc.org>, David Miller <davem@davemloft.net>, Richard Weinberger <richard@nod.at>, the arch/x86 maintainers <x86@kernel.org>, Max Filippov <jcmvbkbc@gmail.com>, "Eric W . Biederman" <ebiederm@xmission.com>, Andrew Morton <akpm@linux-foundation.org>, Ard Biesheuvel <ardb@kernel.org>, alpha <linux-alpha@vger.kernel.org>, "open list:SYNOPSYS ARC ARCHITECTURE" <linux-snps-arc@lists.infradead.org>, linux-csky@vger.kernel.org, "open list:QUALCOMM HEXAGON..." <linux-hexagon@vger.kernel.org>, linux-ia64@vger.kernel.org, linux-m68k <linux-m68k@lists.linux-m68k.org>, "open list:BROADCOM NVRAM DRIVER" <linux-mips@vger.kernel.org>, Openrisc <openrisc@lists.librecores.org>, Parisc List <linux-parisc@vger.kernel.org>, linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-riscv <linux-riscv@lists.infradead.org>, linux-s390 <linux-s390@vger.kernel.org>, Linux-sh list <linux-sh@vger.kernel.org>, sparclinux <sparclinux@vger.kernel.org>, linux-um <linux-um@lists.infradead.org>, "open list:TENSILICA XTENSA PORT (xtensa)" <linux-xtensa@linux-xtensa.org>

On Mon, Feb 21, 2022 at 03:31:23PM +0100, Arnd Bergmann wrote:
> I'll update it this way, otherwise I'd need help in form of a patch
> that changes the exception handling so __get_user/__put_user
> also return -EFAULT for an address error.

https://lore.kernel.org/all/20220222155345.138861-1-tsbogend@alpha.franken.de/

That does the trick.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]