From ee333554fed55555a986a90bb097ac7f9d6f05bf Mon Sep 17 00:00:00 2001
From: Jinbum Park <jinb.park7@gmail.com>
Date: Tue, 6 Mar 2018 01:39:24 +0100
Subject: [PATCH] ARM: 8749/1: Kconfig: Add ARCH_HAS_FORTIFY_SOURCE
CONFIG_FORTIFY_SOURCE detects various overflows at compile-time.
(6974f0c4555e ("include/linux/string.h:
add the option of fortified string.h functions)
ARCH_HAS_FORTIFY_SOURCE means that the architecture can be built and
run with CONFIG_FORTIFY_SOURCE.
Since ARM can be built and run with that flag like other architectures,
select ARCH_HAS_FORTIFY_SOURCE as default.
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
arch/arm/Kconfig | 1 +
arch/arm/boot/compressed/misc.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7e3d535754863c..3765336e5ec6b0 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -7,6 +7,7 @@ config ARM
select ARCH_HAS_DEBUG_VIRTUAL if MMU
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
+ select ARCH_HAS_FORTIFY_SOURCE
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_PHYS_TO_DMA
select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index 16a8a804e95804..4a247acd1b9681 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -167,3 +167,8 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
else
putstr(" done, booting the kernel.\n");
}
+
+void fortify_panic(const char *name)
+{
+ error("detected buffer overflow");
+}
--
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