linux-kernel - Re: [GIT PULL] execve updates for v6.13-rc1

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Message-ID: <CAHk-=whv4q-RBXmc9G7NZ4GiATqE_ORU05f=9g00HkQXbV7vqw@mail.gmail.com>
Date: Thu, 21 Nov 2024 10:02:03 -0800
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Zbigniew Jędrzejewski-Szmek <zbyszek@...waw.pl>
Cc: "Eric W. Biederman" <ebiederm@...ssion.com>, Kees Cook <kees@...nel.org>, linux-kernel@...r.kernel.org, 
	Alexander Viro <viro@...iv.linux.org.uk>, 
	Christophe JAILLET <christophe.jaillet@...adoo.fr>, Dan Carpenter <dan.carpenter@...aro.org>, 
	Nir Lichtman <nir@...htman.org>, syzbot+03e1af5c332f7e0eb84b@...kaller.appspotmail.com, 
	Tycho Andersen <tandersen@...flix.com>, Vegard Nossum <vegard.nossum@...cle.com>
Subject: Re: [GIT PULL] execve updates for v6.13-rc1

On Thu, 21 Nov 2024 at 10:00, Zbigniew Jędrzejewski-Szmek
<zbyszek@...waw.pl> wrote:
>
> Identical — as far as the callee is concerned.
> Basically, we'd like to switch the execve() that we use in systemd
> to start everything with fexecve(), but this should be invisible to
> both the programs that are started and users who call ps/pgrep/….

I'm not discussing this. If you cannot understand the difference
between comm[] and argv[0], this discussion is entirely pointless.

I'd suggest you just not use fexecve().

            Linus