Patch "selftests: x86: sysret_ss_attrs doesn't build on a PIE build" has been added to the 4.9-stable tree

Patch "selftests: x86: sysret_ss_attrs doesn't build on a PIE build" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    selftests: x86: sysret_ss_attrs doesn't build on a PIE build

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     selftests-x86-sysret_ss_attrs-doesn-t-build-on-a-pie-build.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 3346a6a4e5ba8c040360f753b26938cec31a4bdc Mon Sep 17 00:00:00 2001
From: Shuah Khan <shuahkh@osg.samsung.com>
Date: Mon, 2 Oct 2017 16:16:13 -0600
Subject: selftests: x86: sysret_ss_attrs doesn't build on a PIE build

From: Shuah Khan <shuahkh@osg.samsung.com>

commit 3346a6a4e5ba8c040360f753b26938cec31a4bdc upstream.

sysret_ss_attrs fails to compile leading x86 test run to fail on systems
configured to build using PIE by default. Add -no-pie fix it.

Relocation might still fail if relocated above 4G. For now this change
fixes the build and runs x86 tests.

tools/testing/selftests/x86$ make
gcc -m64 -o .../tools/testing/selftests/x86/single_step_syscall_64 -O2
-g -std=gnu99 -pthread -Wall  single_step_syscall.c -lrt -ldl
gcc -m64 -o .../tools/testing/selftests/x86/sysret_ss_attrs_64 -O2 -g
-std=gnu99 -pthread -Wall  sysret_ss_attrs.c thunks.S -lrt -ldl
/usr/bin/ld: /tmp/ccS6pvIh.o: relocation R_X86_64_32S against `.text'
can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
Makefile:49: recipe for target
'.../tools/testing/selftests/x86/sysret_ss_attrs_64' failed
make: *** [.../tools/testing/selftests/x86/sysret_ss_attrs_64] Error 1

Suggested-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 tools/testing/selftests/x86/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -17,7 +17,7 @@ TARGETS_C_64BIT_ALL := $(TARGETS_C_BOTHB
 BINARIES_32 := $(TARGETS_C_32BIT_ALL:%=%_32)
 BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
 
-CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
+CFLAGS := -O2 -g -std=gnu99 -pthread -Wall -no-pie
 
 UNAME_M := $(shell uname -m)
 CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32)


Patches currently in stable-queue which might be from shuahkh@osg.samsung.com are

queue-4.9/selftests-x86-sysret_ss_attrs-doesn-t-build-on-a-pie-build.patch
queue-4.9/selftests-x86-protection_keys-fix-wrong-offset-in-siginfo.patch