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Commit cffcd9df authored by Marc Zyngier's avatar Marc Zyngier Committed by Christoffer Dall
Browse files

KVM: arm/arm64: vgic-v3: Fix off-by-one LR access 



When iterating over the used LRs, be careful not to try to access
an unused LR, or even an unimplemented one if you're unlucky...

Reviewed-by: default avatarChristoffer Dall <cdall@linaro.org>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: default avatarChristoffer Dall <cdall@linaro.org>
parent ff567614

virt/kvm/arm/hyp/vgic-v3-sr.c

+1 −1
Original line number Diff line number Diff line
@@ -143,7 +143,7 @@ void __hyp_text __vgic_v3_save_state(struct kvm_vcpu *vcpu) 
		val = read_gicreg(ICH_VTR_EL2);

		nr_pri_bits = vtr_to_nr_pri_bits(val);



		for (i = 0; i <= used_lrs; i++) {

		for (i = 0; i < used_lrs; i++) {

			if (cpu_if->vgic_elrsr & (1 << i))

				cpu_if->vgic_lr[i] &= ~ICH_LR_STATE;

			else