linux-kernel - [PATCH] kbuild: move -fzero-init-padding-bits=all to the top-level Makefile

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-next>] [day] [month] [year] [list]

Message-ID: <20250215161604.690467-1-masahiroy@kernel.org>
Date: Sun, 16 Feb 2025 01:15:52 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Kees Cook <kees@...nel.org>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>
Subject: [PATCH] kbuild: move -fzero-init-padding-bits=all to the top-level Makefile

The -fzero-init-padding-bits=all option is not a warning flag, so
defining it in scripts/Makefile.extrawarn is inconsistent.

Move it to the top-level Makefile for consistency.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 Makefile                   | 3 +++
 scripts/Makefile.extrawarn | 3 ---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 89628e354ca7..4a36864dd4bd 100644
--- a/Makefile
+++ b/Makefile
@@ -928,6 +928,9 @@ KBUILD_CFLAGS	+= $(CC_AUTO_VAR_INIT_ZERO_ENABLER)
 endif
 endif
 
+# Explicitly clear padding bits during variable initialization
+KBUILD_CFLAGS += $(call cc-option,-fzero-init-padding-bits=all)
+
 # While VLAs have been removed, GCC produces unreachable stack probes
 # for the randomize_kstack_offset feature. Disable it for all compilers.
 KBUILD_CFLAGS	+= $(call cc-option, -fno-stack-clash-protection)
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index dc081cf46d21..d75897559d18 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -82,9 +82,6 @@ KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init)
 # Warn if there is an enum types mismatch
 KBUILD_CFLAGS += $(call cc-option,-Wenum-conversion)
 
-# Explicitly clear padding bits during variable initialization
-KBUILD_CFLAGS += $(call cc-option,-fzero-init-padding-bits=all)
-
 KBUILD_CFLAGS += -Wextra
 KBUILD_CFLAGS += -Wunused
 
-- 
2.43.0