Otherwise kvm might attempt to dereference a NULL pointer.
CC: stable@xxxxxxxxxx
Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Index: kvm/arch/x86/kvm/x86.c
===================================================================
--- kvm.orig/arch/x86/kvm/x86.c
+++ kvm/arch/x86/kvm/x86.c
@@ -1815,6 +1815,9 @@ long kvm_arch_vcpu_ioctl(struct file *fi
switch (ioctl) {
case KVM_GET_LAPIC: {
+ r = -EINVAL;
+ if (!irqchip_in_kernel(vcpu->kvm))
+ goto out;
lapic = kzalloc(sizeof(struct kvm_lapic_state), GFP_KERNEL);
r = -ENOMEM;
@@ -1830,6 +1833,9 @@ long kvm_arch_vcpu_ioctl(struct file *fi
break;
}
case KVM_SET_LAPIC: {
+ r = -EINVAL;
+ if (!irqchip_in_kernel(vcpu->kvm))
+ goto out;
lapic = kmalloc(sizeof(struct kvm_lapic_state), GFP_KERNEL);
r = -ENOMEM;
if (!lapic)
--
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