KVM: fail KVM_SET_VCPU_EVENTS with invalid exception number

[linux.git] / arch / x86 / kvm / x86.c

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 990929bbeb5042b22bf02548766d8fe766eda711..d9db2a486377095c478f51b9fae1a06ecd6efcfc 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2973,6 +2973,10 @@ static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu,
                              | KVM_VCPUEVENT_VALID_SMM))
                return -EINVAL;
 
+       if (events->exception.injected &&
+           (events->exception.nr > 31 || events->exception.nr == NMI_VECTOR))
+               return -EINVAL;
+
        process_nmi(vcpu);
        vcpu->arch.exception.pending = events->exception.injected;
        vcpu->arch.exception.nr = events->exception.nr;