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authorMarc Zyngier <marc.zyngier@arm.com>2017-04-10 10:19:44 +0100
committerChristoffer Dall <cdall@linaro.org>2017-04-19 17:28:38 +0200
commitcffcd9df10daa753610d79f018466f9c61603b97 (patch)
treef039d5228ca40d77bfb8e292e61f07d97c7f8f89 /virt
parentff567614d58551b650a2375b50be368fbfed5cd5 (diff)
downloadblackbird-op-linux-cffcd9df10daa753610d79f018466f9c61603b97.tar.gz
blackbird-op-linux-cffcd9df10daa753610d79f018466f9c61603b97.zip
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: Christoffer Dall <cdall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/hyp/vgic-v3-sr.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c
index 91922c1eddc8..bce6037cf01d 100644
--- a/virt/kvm/arm/hyp/vgic-v3-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v3-sr.c
@@ -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
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