linux-kernel - Re: [PATCH v2 4/8] bootconfig: Remove unneeded checksum

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: <20200220121431.0de871fe@gandalf.local.home>
Date:   Thu, 20 Feb 2020 12:14:31 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Borislav Petkov <bp@...en8.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v2 4/8] bootconfig: Remove unneeded checksum

On Thu, 20 Feb 2020 21:19:02 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:

> Remove checksum of bootconfig because we already use a magic
> word to identify bootconfig. This checksum was used for
> checking whether there is a bootconfig at the end of initrd
> or not. Since we have a bootconfig magic word to identify
> the bootconfig data, we do not this checksum anymore.
> 
> Thus the block image of the initrd file with bootconfig is
> as follows.
> 
> [initrd][bootconfig][size(u32)][#BOOTCONFIG\n]
> 
> Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
> ---
>

Hmm, I think the checksum is still good to have, in case of a corrupted
file. Does it hurt to keep it?

-- Steve