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authorJinbum Park <jinb.park7@gmail.com>2018-03-06 01:39:24 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2018-03-28 21:30:58 +0100
commitee333554fed55555a986a90bb097ac7f9d6f05bf (patch)
tree5f0b9d1f0c81cc652446a799890eb3e8bce573de
parent7928b2cbe55b2a410a0f5c1f154610059c57b1b2 (diff)
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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>
-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/boot/compressed/misc.c5
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7e3d53575486..3765336e5ec6 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 16a8a804e958..4a247acd1b96 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");
+}