linux-hardening - [PATCH v2 0/3] kbuild: Use -fzero-init-padding-bits=all

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Message-Id: <20250127190636.it.745-kees@kernel.org>
Date: Mon, 27 Jan 2025 11:10:25 -0800
From: Kees Cook <kees@...nel.org>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: Kees Cook <kees@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jakub Jelinek <jakub@...hat.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	linux-kernel@...r.kernel.org,
	linux-kbuild@...r.kernel.org,
	llvm@...ts.linux.dev,
	linux-hardening@...r.kernel.org
Subject: [PATCH v2 0/3] kbuild: Use -fzero-init-padding-bits=all

Hi,

This fixes the union initialization regression introduced by GCC 15,
and improves explicit padding initialization for structs.

I can take this via the hardening tree if that's easiest.

-Kees

 v2: Add updated stackinit KUnit tests, improve change log, add Reviewed-By
 v1: https://lore.kernel.org/lkml/20250121003646.work.168-kees@kernel.org/

Kees Cook (3):
  stackinit: Add old-style zero-init syntax to struct tests
  stackinit: Add union initialization to selftests
  kbuild: Use -fzero-init-padding-bits=all

 lib/stackinit_kunit.c      | 106 +++++++++++++++++++++++++++++++++++++
 scripts/Makefile.extrawarn |   3 ++
 2 files changed, 109 insertions(+)

-- 
2.34.1