Patch "scripts/has-stack-protector: add -fno-PIE" has been added to the 4.8-stable tree

Patch "scripts/has-stack-protector: add -fno-PIE" has been added to the 4.8-stable tree

[gregkh]

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

    scripts/has-stack-protector: add -fno-PIE

to the 4.8-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:
     scripts-has-stack-protector-add-fno-pie.patch
and it can be found in the queue-4.8 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 82031ea29e454b574bc6f49a33683a693ca5d907 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 4 Nov 2016 19:39:39 +0100
Subject: scripts/has-stack-protector: add -fno-PIE

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

commit 82031ea29e454b574bc6f49a33683a693ca5d907 upstream.

Adding -no-PIE to the fstack protector check. -no-PIE was introduced
before -fstack-protector so there is no need for a runtime check.

Without it the build stops:
|Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong available but compiler is broken

due to -mcmodel=kernel + -fPIE if -fPIE is enabled by default.

Tagging it stable so it is possible to compile recent stable kernels as
well.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 scripts/gcc-x86_64-has-stack-protector.sh |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/scripts/gcc-x86_64-has-stack-protector.sh
+++ b/scripts/gcc-x86_64-has-stack-protector.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
+echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fno-PIE -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
 if [ "$?" -eq "0" ] ; then
 	echo y
 else


Patches currently in stable-queue which might be from bigeasy@linutronix.de are

queue-4.8/x86-kexec-add-fno-pie.patch
queue-4.8/scripts-has-stack-protector-add-fno-pie.patch
queue-4.8/kbuild-add-fno-pie.patch
queue-4.8/x86-cpu-deal-with-broken-firmware-vmware-xen.patch
queue-4.8/kbuild-steal-gcc-s-pie-from-the-very-beginning.patch