diff options
| author |   Marc Zyngier <marc.zyngier@arm.com> | 2017-04-10 10:19:44 +0100 |
|---|---|---|
| committer |   Christoffer Dall <cdall@linaro.org> | 2017-04-19 17:28:38 +0200 |
| commit | cffcd9df10daa753610d79f018466f9c61603b97 (patch) | |
| tree | f039d5228ca40d77bfb8e292e61f07d97c7f8f89 /virt/kvm | |
| parent | KVM: arm/arm64: vgic-v3: De-optimize VMCR save/restore when emulating a GICv2 (diff) | |
| download | linux-dev-cffcd9df10daa753610d79f018466f9c61603b97.tar.xz linux-dev-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/kvm')
| -rw-r--r-- | virt/kvm/arm/hyp/vgic-v3-sr.c | 2 |
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 |