[Bug 42980] BUG in gfn_to_pfn_prot

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https://bugzilla.kernel.org/show_bug.cgi?id=42980





--- Comment #5 from Avi Kivity <avi@xxxxxxxxxx>  2012-03-28 15:07:25 ---
vcpu_enter_guest()
  kvm_mmu_reload() // now root_hpa is valid
  inject_pending_event()
    vmx_interrupt_allowed()
      nested_vmx_vmexit()
        load_vmcs12_host_state()
          kvm_mmu_reset_context() // root_hpa now invalid
  kvm_guest_enter()
  ... page fault because root_hpa is invalid, oops

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