KVM: VMX: avoid guest hang on invalid invept instruction

commit 2849eb4f99d54925c543db12917127f88b3c38ff upstream.

A guest executing an invalid invept instruction would hang
because the instruction pointer was not updated.

Fixes: bfd0a56b90005f8c8a004baf407ad90045c2b11e
Reviewed-by: David Matlack <dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 9e439266554def980bd09b50b420724ffa4442a5..92f9e2abf7100c009bbb4967181c71db42e248c4 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6372,6 +6372,7 @@ static int handle_invept(struct kvm_vcpu *vcpu)
        if (!(types & (1UL << type))) {
                nested_vmx_failValid(vcpu,
                                VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
+               skip_emulated_instruction(vcpu);
                return 1;
        }