linux-kernel - [PATCH 4/4] libfdt, kasan: don't instrument libfdt.

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Date:	Wed, 26 Aug 2015 19:15:07 +0300
From:	Andrey Ryabinin <ryabinin.a.a@...il.com>
To:	Will Deacon <will.deacon@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	linux-arm-kernel@...ts.infradead.org
Cc:	Matt Fleming <matt.fleming@...el.com>, linux-efi@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Alexander Potapenko <glider@...gle.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	Andrey Ryabinin <ryabinin.a.a@...il.com>
Subject: [PATCH 4/4] libfdt, kasan: don't instrument libfdt.

libfdt is used by EFI code and it runs before we setup early
shadow, so it has to be not instrumented to prevent boot crash.

Signed-off-by: Andrey Ryabinin <ryabinin.a.a@...il.com>
---
 lib/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Makefile b/lib/Makefile
index 6897b52..44e1d81 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -165,7 +165,8 @@ obj-$(CONFIG_STMP_DEVICE) += stmp_device.o
 libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \
 	       fdt_empty_tree.o
 $(foreach file, $(libfdt_files), \
-	$(eval CFLAGS_$(file) = -I$(src)/../scripts/dtc/libfdt))
+	$(eval CFLAGS_$(file) = -I$(src)/../scripts/dtc/libfdt) \
+	$(eval KASAN_SANITIZE_$(file) := n))
 lib-$(CONFIG_LIBFDT) += $(libfdt_files)
 
 obj-$(CONFIG_RBTREE_TEST) += rbtree_test.o
-- 
2.4.6

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