From ee333554fed55555a986a90bb097ac7f9d6f05bf Mon Sep 17 00:00:00 2001 From: Jinbum Park 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 Signed-off-by: Jinbum Park Signed-off-by: Russell King --- 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 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"); +}