linux-hardening - [PATCH v2 5/5] bitfield: build kunit tests without structleak plugin

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Date:   Wed, 29 Sep 2021 14:27:13 -0700
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     shuah@...nel.org, davidgow@...gle.com, arnd@...db.de,
        keescook@...omium.org, rafael@...nel.org, jic23@...nel.org,
        lars@...afoo.de, ulf.hansson@...aro.org, andreas.noever@...il.com,
        michael.jamet@...el.com, mika.westerberg@...ux.intel.com,
        YehezkelShB@...il.com, masahiroy@...nel.org,
        michal.lkml@...kovi.net, ndesaulniers@...gle.com
Cc:     linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
        gregkh@...uxfoundation.org, linux-iio@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-hardening@...r.kernel.org, linux-kbuild@...r.kernel.org,
        Brendan Higgins <brendanhiggins@...gle.com>
Subject: [PATCH v2 5/5] bitfield: build kunit tests without structleak plugin

From: Arnd Bergmann <arnd@...db.de>

The structleak plugin causes the stack frame size to grow immensely:

lib/bitfield_kunit.c: In function 'test_bitfields_constants':
lib/bitfield_kunit.c:93:1: error: the frame size of 7440 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]

Turn it off in this file.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
Reviewed-by: Kees Cook <keescook@...omium.org>
---
Changes since last revision:
 - Dropped -Wframe-larger-than=10240 from CFLAGS.
---
 lib/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Makefile b/lib/Makefile
index 5efd1b435a37c..a841be5244ac6 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -351,7 +351,7 @@ obj-$(CONFIG_OBJAGG) += objagg.o
 obj-$(CONFIG_PLDMFW) += pldmfw/
 
 # KUnit tests
-CFLAGS_bitfield_kunit.o := $(call cc-option,-Wframe-larger-than=10240)
+CFLAGS_bitfield_kunit.o := $(DISABLE_STRUCTLEAK_PLUGIN)
 obj-$(CONFIG_BITFIELD_KUNIT) += bitfield_kunit.o
 obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
 obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
-- 
2.33.0.685.g46640cef36-goog