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-rw-r--r--arch/x86/kvm/vmx.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 98f4b0bcc660..579a0b51696a 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1280,7 +1280,11 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
if (m->guest[i].index == msr)
break;
- if (i == m->nr) {
+ if (i == NR_AUTOLOAD_MSRS) {
+ printk_once(KERN_WARNING"Not enough mst switch entries. "
+ "Can't add msr %x\n", msr);
+ return;
+ } else if (i == m->nr) {
++m->nr;
vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->nr);
vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->nr);