From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751330AbdFFEx0 (ORCPT ); Tue, 6 Jun 2017 00:53:26 -0400 Received: from mail-it0-f47.google.com ([209.85.214.47]:34738 "EHLO mail-it0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750766AbdFFExY (ORCPT ); Tue, 6 Jun 2017 00:53:24 -0400 From: Kees Cook To: Andrew Morton Cc: Kees Cook , Ard Biesheuvel , linux-kernel@vger.kernel.org Subject: [PATCH 2/6] efi: Avoid fortify checks in EFI stub Date: Mon, 5 Jun 2017 21:52:31 -0700 Message-Id: <1496724755-104187-3-git-send-email-keescook@chromium.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1496724755-104187-1-git-send-email-keescook@chromium.org> References: <1496724755-104187-1-git-send-email-keescook@chromium.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.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 Signed-off-by: Kees Cook Cc; Matt Fleming Cc: Ard Biesheuvel --- 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