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KVM: Sanitize KVM_IRQFD flags
[deliverable/linux.git]
/
virt
/
kvm
/
eventfd.c
diff --git
a/virt/kvm/eventfd.c
b/virt/kvm/eventfd.c
index c307c24c147affbc0dfadf65f938c8073f1067fb..7d7e2aaffece234a81cef3f4181cc7ffe5bb14cb 100644
(file)
--- a/
virt/kvm/eventfd.c
+++ b/
virt/kvm/eventfd.c
@@
-340,6
+340,9
@@
kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args)
int
kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
{
+ if (args->flags & ~KVM_IRQFD_FLAG_DEASSIGN)
+ return -EINVAL;
+
if (args->flags & KVM_IRQFD_FLAG_DEASSIGN)
return kvm_irqfd_deassign(kvm, args);
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