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. Cc: [email protected] Signed-off-by: Marc Zyngier <[email protected]> --- arch/arm/kvm/hyp/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/kvm/hyp/Makefile b/arch/arm/kvm/hyp/Makefile index 3023bb530edf..8679405b0b2b 100644 --- a/arch/arm/kvm/hyp/Makefile +++ b/arch/arm/kvm/hyp/Makefile @@ -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 -- 2.11.0 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
