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From: Kees Cook <keescook@chromium.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>,
	Matt Fleming <matt@codeblueprint.co.uk>,
	linux-kernel@vger.kernel.org,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Daniel Micay <danielmicay@gmail.com>
Subject: [PATCH 1/7] efi: Avoid fortify checks in EFI stub
Date: Mon, 19 Jun 2017 13:26:21 -0700
Message-ID: <1497903987-21002-2-git-send-email-keescook@chromium.org> (raw)
In-Reply-To: <1497903987-21002-1-git-send-email-keescook@chromium.org>

This avoids CONFIG_FORTIFY_SOURCE from being enabled during the EFI stub
build, as adding a panic() implementation may not work well. This can be
adjusted in the future.

Suggested-by: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
---
 drivers/firmware/efi/libstub/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index f7425960f6a5..37e24f525162 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -17,6 +17,7 @@ cflags-$(CONFIG_ARM)		:= $(subst -pg,,$(KBUILD_CFLAGS)) \
 cflags-$(CONFIG_EFI_ARMSTUB)	+= -I$(srctree)/scripts/dtc/libfdt
 
 KBUILD_CFLAGS			:= $(cflags-y) -DDISABLE_BRANCH_PROFILING \
+				   -D__NO_FORTIFY \
 				   $(call cc-option,-ffreestanding) \
 				   $(call cc-option,-fno-stack-protector)
 
-- 
2.7.4

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-19 20:26 [PATCH 0/7] CONFIG_FORTIFY_SOURCE Kees Cook
2017-06-19 20:26 ` Kees Cook [this message]
2017-06-19 20:26 ` [PATCH 2/7] x86/power/64: Use char arrays for asm function names Kees Cook
2017-06-19 20:26 ` [PATCH 3/7] kexec_file: Adjust declaration of kexec_purgatory Kees Cook
2017-06-19 20:26 ` [PATCH 4/7] IB/rxe: Do not copy extra stack memory to skb Kees Cook
2017-06-19 20:26 ` [PATCH 5/7] powerpc: Don't fortify prom_init Kees Cook
2017-06-19 20:26 ` [PATCH 6/7] powerpc: Make feature-fixup tests fortify-safe Kees Cook
2017-06-19 20:26 ` [PATCH 7/7] include/linux/string.h: add the option of fortified string.h functions Kees Cook
2017-09-10 10:55   ` Geert Uytterhoeven
2017-09-10 13:51     ` Arnd Bergmann
2017-06-19 21:50 ` [PATCH 0/7] CONFIG_FORTIFY_SOURCE Andrew Morton
2017-06-19 22:12   ` Kees Cook
2017-06-19 22:31     ` Andrew Morton

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