linux-hardening - [PATCH 0/3] binfmt_elf: Honor PT

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Message-Id: <20240508172848.work.131-kees@kernel.org>
Date: Wed,  8 May 2024 10:31:45 -0700
From: Kees Cook <keescook@...omium.org>
To: "H . J . Lu" <hjl.tools@...il.com>
Cc: Kees Cook <keescook@...omium.org>,
	Chris Kennelly <ckennelly@...gle.com>,
	Eric Biederman <ebiederm@...ssion.com>,
	Shuah Khan <shuah@...nel.org>,
	Muhammad Usama Anjum <usama.anjum@...labora.com>,
	John Hubbard <jhubbard@...dia.com>,
	Fangrui Song <maskray@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Yang Yingliang <yangyingliang@...wei.com>,
	Mike Rapoport <rppt@...nel.org>,
	Rui Salvaterra <rsalvaterra@...il.com>,
	Victor Stinner <vstinner@...hat.com>,
	Jan Palus <jpalus@...tmail.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>,
	Jan Kara <jack@...e.cz>,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: [PATCH 0/3] binfmt_elf: Honor PT_LOAD alignment for static PIE

Hi,

This attempts to implement PT_LOAD p_align support for static PIE builds.
I intend this to go into -next after the coming merge window so we can
maximize bake time. In the past we've had regressions with both the
selftests and the ELF loader. Hopefully we can shake everything out over
a few months. :)

Thanks!

-Kees

Kees Cook (3):
  selftests/exec: Build both static and non-static load_address tests
  binfmt_elf: Calculate total_size earlier
  binfmt_elf: Honor PT_LOAD alignment for static PIE

 fs/binfmt_elf.c                             | 94 ++++++++++++++-------
 tools/testing/selftests/exec/Makefile       | 19 +++--
 tools/testing/selftests/exec/load_address.c | 67 ++++++++++++---
 3 files changed, 130 insertions(+), 50 deletions(-)

-- 
2.34.1