From: Sean Christopherson <[email protected]>

commit b89d5ad00e789967a5e2c5335f75c48755bebd88 upstream.

Reload vmcs01 when bailing from nested_vmx_enter_non_root_mode() as KVM
expects vmcs01 to be loaded when is_guest_mode() is false.

Fixes: 671ddc700fd08 ("KVM: nVMX: Don't leak L1 MMIO regions to L2")
Cc: [email protected]
Cc: Dan Cross <[email protected]>
Cc: Jim Mattson <[email protected]>
Cc: Peter Shier <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 arch/x86/kvm/vmx/nested.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -3346,8 +3346,10 @@ enum nvmx_vmentry_status nested_vmx_ente
        prepare_vmcs02_early(vmx, vmcs12);
 
        if (from_vmentry) {
-               if (unlikely(!nested_get_vmcs12_pages(vcpu)))
+               if (unlikely(!nested_get_vmcs12_pages(vcpu))) {
+                       vmx_switch_vmcs(vcpu, &vmx->vmcs01);
                        return NVMX_VMENTRY_KVM_INTERNAL_ERROR;
+               }
 
                if (nested_vmx_check_vmentry_hw(vcpu)) {
                        vmx_switch_vmcs(vcpu, &vmx->vmcs01);


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