From 065ce7bfb7991a5b54ee7be4c79fbcdebcacb538 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Thu, 26 Aug 2021 12:57:49 +0300 Subject: [PATCH] KVM: VMX: avoid running vmx_handle_exit_irqoff in case of emulation commit 81b4b56d4f8130bbb99cf4e2b48082e5b4cfccb9 upstream. If we are emulating an invalid guest state, we don't have a correct exit reason, and thus we shouldn't do anything in this function. Signed-off-by: Maxim Levitsky Message-Id: <20210826095750.1650467-2-mlevitsk@redhat.com> Cc: stable@vger.kernel.org Fixes: 95b5a48c4f2b ("KVM: VMX: Handle NMIs, #MCs and async #PFs in common irqs-disabled fn", 2019-06-18) Signed-off-by: Paolo Bonzini Signed-off-by: Greg Kroah-Hartman --- arch/x86/kvm/vmx/vmx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index dcd4f43c23de5..6af7d0b0c154b 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -6452,6 +6452,9 @@ static void vmx_handle_exit_irqoff(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); + if (vmx->emulation_required) + return; + if (vmx->exit_reason.basic == EXIT_REASON_EXTERNAL_INTERRUPT) handle_external_interrupt_irqoff(vcpu); else if (vmx->exit_reason.basic == EXIT_REASON_EXCEPTION_NMI)