diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index fd24f68378a7..3397a88b7463 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7608,6 +7608,8 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
 		goto free_vcpu;
 
 	vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	BUILD_BUG_ON(PAGE_SIZE / sizeof(struct shared_msr_entry) < NR_VMX_MSR);
+
 	err = -ENOMEM;
 	if (!vmx->guest_msrs) {
 		goto uninit_vcpu;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 439f96bf424d..d38abc81db65 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -212,6 +212,7 @@ static void shared_msr_update(unsigned slot, u32 msr)
 
 void kvm_define_shared_msr(unsigned slot, u32 msr)
 {
+	BUG_ON(slot >= KVM_NR_SHARED_MSRS);
 	if (slot >= shared_msrs_global.nr)
 		shared_msrs_global.nr = slot + 1;
 	shared_msrs_global.msrs[slot] = msr;