From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Masahiro Yamada <masahiroy@kernel.org>,
linux-kbuild@vger.kernel.org,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Keith Packard <keithp@keithp.com>,
Dan Williams <dan.j.williams@intel.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
clang-built-linux@googlegroups.com,
linux-hardening@vger.kernel.org
Subject: [PATCH v2 5/5] Makefile: Enable -Wzero-length-bounds
Date: Wed, 25 Aug 2021 22:04:58 -0700 [thread overview]
Message-ID: <20210826050458.1540622-6-keescook@chromium.org> (raw)
In-Reply-To: <20210826050458.1540622-1-keescook@chromium.org>
With all known internal zero-length accesses fixed, it is possible to
enable -Wzero-length-bounds globally. Since this is included by default
in -Warray-bounds, we just need to stop disabling it.
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/Makefile b/Makefile
index 8e7e73a642e2..8e732e875e78 100644
--- a/Makefile
+++ b/Makefile
@@ -994,7 +994,6 @@ KBUILD_CFLAGS += -Wno-pointer-sign
KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
# We'll want to enable this eventually, but it's not going away for 5.7 at least
-KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds)
KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow)
# Another good warning that we'll want to enable eventually
--
2.30.2
next prev parent reply other threads:[~2021-08-26 5:05 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-26 5:04 [PATCH v2 0/5] Enable -Warray-bounds and -Wzero-length-bounds Kees Cook
2021-08-26 5:04 ` [PATCH v2 1/5] stddef: Add flexible array union helper Kees Cook
2021-08-26 5:04 ` [PATCH v2 2/5] treewide: Replace open-coded flex arrays in unions Kees Cook
2021-08-26 6:24 ` Marc Kleine-Budde
2021-08-27 16:08 ` Kees Cook
2021-08-27 17:08 ` Marc Kleine-Budde
2021-08-27 16:17 ` Kees Cook
2021-08-28 7:31 ` Vincent MAILHOL
2021-08-26 7:36 ` Vincent MAILHOL
2021-08-26 15:39 ` Kees Cook
2021-08-26 5:04 ` [PATCH v2 3/5] treewide: Replace 0-element memcpy() destinations with flexible arrays Kees Cook
2021-08-26 5:24 ` Keith Packard
2021-08-26 5:51 ` Kees Cook
2021-08-26 5:04 ` [PATCH v2 4/5] Makefile: Enable -Warray-bounds Kees Cook
2021-08-26 5:04 ` Kees Cook [this message]
2021-08-27 9:25 ` [PATCH v2 1/5] stddef: Add flexible array union helper Vincent Mailhol
2021-08-27 15:39 ` Kees Cook
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