linux-kernel - [PATCH 4.4 53/74] um: link vmlinux with -no-pie

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Message-Id: <20180129123849.971745323@linuxfoundation.org>
Date:   Mon, 29 Jan 2018 13:56:58 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Thomas Meyer <thomas@...3r.de>,
        Richard Weinberger <richard@....at>,
        Bernie Innocenti <codewiz@...gle.com>
Subject: [PATCH 4.4 53/74] um: link vmlinux with -no-pie

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Meyer <thomas@...3r.de>

commit 883354afbc109c57f925ccc19840055193da0cc0 upstream.

Debian's gcc defaults to pie. The global Makefile already defines the -fno-pie option.
Link UML dynamic kernel image also with -no-pie to fix the build.

Signed-off-by: Thomas Meyer <thomas@...3r.de>
Signed-off-by: Richard Weinberger <richard@....at>
Cc: Bernie Innocenti <codewiz@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/um/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -117,7 +117,7 @@ archheaders:
 archprepare: include/generated/user_constants.h
 
 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
-LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
+LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib $(call cc-option, -no-pie)
 
 CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
 	$(call cc-option, -fno-stack-protector,) \