linux-kernel - Re: [PATCH] binfmt_elf_fdpic: fix /proc/<pid>/auxv

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Message-Id: <171399934703.3282693.5984373700910072392.b4-ty@chromium.org>
Date: Wed, 24 Apr 2024 15:55:49 -0700
From: Kees Cook <keescook@...omium.org>
To: linux-kernel@...r.kernel.org,
	Max Filippov <jcmvbkbc@...il.com>
Cc: Kees Cook <keescook@...omium.org>,
	linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org,
	Eric Biederman <ebiederm@...ssion.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>,
	Jan Kara <jack@...e.cz>
Subject: Re: [PATCH] binfmt_elf_fdpic: fix /proc/<pid>/auxv

On Fri, 22 Mar 2024 12:54:18 -0700, Max Filippov wrote:
> Althought FDPIC linux kernel provides /proc/<pid>/auxv files they are
> empty because there's no code that initializes mm->saved_auxv in the
> FDPIC ELF loader.
> 
> Synchronize FDPIC ELF aux vector setup with ELF. Replace entry-by-entry
> aux vector copying to userspace with initialization of mm->saved_auxv
> first and then copying it to userspace as a whole.
> 
> [...]

Applied to for-next/execve, thanks!

[1/1] binfmt_elf_fdpic: fix /proc/<pid>/auxv
      https://git.kernel.org/kees/c/10e29251be0e

Take care,

-- 
Kees Cook