KVM: VMX: Add non-canonical check on writes to RTIT address MSRs
Reject writes to RTIT address MSRs if the data being written is a non-canonical address as the MSRs are subject to canonical checks, e.g. KVM will trigger an unchecked #GP when loading the values to hardware during pt_guest_enter(). Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -2144,6 +2144,8 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
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(index >= 2 * intel_pt_validate_cap(vmx->pt_desc.caps,
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PT_CAP_num_address_ranges)))
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return 1;
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if (is_noncanonical_address(data, vcpu))
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return 1;
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if (index % 2)
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vmx->pt_desc.guest.addr_b[index / 2] = data;
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else
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