Patch "arm: KVM: Do not use stack-protector to compile HYP code" has been added to the 4.11-stable tree

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

arm: KVM: Do not use stack-protector to compile HYP code

to the 4.11-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:
arm-kvm-do-not-use-stack-protector-to-compile-hyp-code.patch
and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Marc Zyngier <[email protected]>
Date: Tue, 2 May 2017 14:30:38 +0100
Subject: arm: KVM: Do not use stack-protector to compile HYP code

From: Marc Zyngier <[email protected]>

commit 501ad27c67ed0b90df465f23d33e9aed64058a47 upstream.

We like living dangerously. Nothing explicitely forbids stack-protector to be used in the HYP code, while distributions routinely compile their kernel with it. We're just lucky that no code actually triggers the instrumentation.

Let's not try our luck for much longer, and disable stack-protector for code living at HYP.

---
 arch/arm/kvm/hyp/Makefile |    2 ++
 1 file changed, 2 insertions(+)

@@ -2,6 +2,8 @@
 # Makefile for Kernel-based Virtual Machine module, HYP part
 #
 
+ccflags-y += -fno-stack-protector
+
 KVM=../../../../virt/kvm
 
 obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/vgic-v2-sr.o

Patches currently in stable-queue which might be from [email protected] are

queue-4.11/arm64-kvm-do-not-use-stack-protector-to-compile-el2-code.patch queue-4.11/arm-kvm-do-not-use-stack-protector-to-compile-hyp-code.patch queue-4.11/kvm-arm-arm64-vgic-v3-do-not-use-active-pending-state-for-a-hw-interrupt.patch queue-4.11/kvm-arm-arm64-vgic-v2-do-not-use-active-pending-state-for-a-hw-interrupt.patch