linux-kernel - Re: [PATCH] KVM: s390: rename PROT_NONE to PROT_TYPE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <acfad3e9-f4df-481a-8322-141c3579602b@linux.ibm.com>
Date: Thu, 15 May 2025 11:24:41 +0200
From: Christian Borntraeger <borntraeger@...ux.ibm.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc: Ignacio Moreno Gonzalez <Ignacio.MorenoGonzalez@...a.com>,
        linux-mm@...ck.org, Yang Shi <yang@...amperecomputing.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        David Hildenbrand <david@...hat.com>,
        Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>, kvm@...r.kernel.org,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        pbonzini@...hat.com
Subject: Re: [PATCH] KVM: s390: rename PROT_NONE to PROT_TYPE_DUMMY



Am 14.05.25 um 18:35 schrieb Lorenzo Stoakes:
> The enum type prot_type declared in arch/s390/kvm/gaccess.c declares an
> unfortunate identifier within it - PROT_NONE.
> 
> This clashes with the protection bit define from the uapi for mmap()
> declared in include/uapi/asm-generic/mman-common.h, which is indeed what
> those casually reading this code would assume this to refer to.
> 
> This means that any changes which subsequently alter headers in any way
> which results in the uapi header being imported here will cause build
> errors.
> 
> Resolve the issue by renaming PROT_NONE to PROT_TYPE_DUMMY.
> 
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
> Suggested-by: Ignacio Moreno Gonzalez <Ignacio.MorenoGonzalez@...a.com>
> Fixes: b3cefd6bf16e ("KVM: s390: Pass initialized arg even if unused")
> Cc: stable@...r.kernel.org
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202505140943.IgHDa9s7-lkp@intel.com/

Acked-by: Christian Borntraeger <borntraeger@...ux.ibm.com>
I think its fine to go via mm tree.