linux-kernel - Re: [PATCH] mm: make 'highmem' symbol ro_after

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]

Date:   Mon, 24 Jan 2022 10:17:14 -0800 (PST)
From:   David Rientjes <rientjes@...gle.com>
To:     Ard Biesheuvel <ardb@...nel.org>
cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: make 'highmem' symbol ro_after_init

On Mon, 24 Jan 2022, Ard Biesheuvel wrote:

> diff --git a/mm/memory.c b/mm/memory.c
> index c125c4969913..50e82cb94ccc 100644
> --- a/mm/memory.c
> +++ b/mm/memory.c
> @@ -106,7 +106,7 @@ EXPORT_SYMBOL(mem_map);
>   * highstart_pfn must be the same; there must be no gap between ZONE_NORMAL
>   * and ZONE_HIGHMEM.
>   */
> -void *high_memory;
> +void *high_memory __ro_after_init;
>  EXPORT_SYMBOL(high_memory);
>  
>  /*

Same should be true for the mm/nommu.c variant?