From f8fa70f392fab8697b6358bb7e4f8c3e8429ec7b Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Tue, 12 Jul 2016 16:28:01 +0100 Subject: [PATCH] arm64: localise Image objcopy flags We currently define OBJCOPYFLAGS in the top-level arm64 Makefile, and thus these flags will be passed to all uses of objcopy, kernel-wide, for which they are not explicitly overridden. The flags we set are intended for converting vmlinux (and ELF) into Image (a raw binary), and thus the flags chosen are problematic for some other uses which do not expect a raw binary result, e.g. the upcoming lkdtm rodata test: http://www.openwall.com/lists/kernel-hardening/2016/06/08/2 This patch localises the objcopy flags such that they are only used for the vmlinux -> Image conversion. Signed-off-by: Mark Rutland Cc: Will Deacon Acked-by: Kees Cook Tested-by: Laura Abbott Signed-off-by: Catalin Marinas --- arch/arm64/Makefile | 1 - arch/arm64/boot/Makefile | 2 ++ 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 4b6f84bf2ab9..393103b8abe4 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -12,7 +12,6 @@ LDFLAGS_vmlinux :=-p --no-undefined -X CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET) -OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S GZFLAGS :=-9 ifneq ($(CONFIG_RELOCATABLE),) diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile index 305c552b5ec1..1f012c506434 100644 --- a/arch/arm64/boot/Makefile +++ b/arch/arm64/boot/Makefile @@ -14,6 +14,8 @@ # Based on the ia64 boot/Makefile. # +OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S + targets := Image Image.gz $(obj)/Image: vmlinux FORCE