KVM: Protect update_cr8_intercept() when running without an apic
update_cr8_intercept() can be triggered from userspace while there
is no apic present.
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 59a8ba4..35e7fc5 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3500,6 +3500,9 @@
if (!kvm_x86_ops->update_cr8_intercept)
return;
+ if (!vcpu->arch.apic)
+ return;
+
if (!vcpu->arch.apic->vapic_addr)
max_irr = kvm_lapic_find_highest_irr(vcpu);
else