Marcelo Tosatti wrote:
From: Izik Eidus <ieidus@xxxxxxxxxx>
First check if the list is empty before attempting to look at list
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Signed-off-by: Izik Eidus <ieidus@xxxxxxxxxx>
Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Index: kvm/arch/x86/kvm/mmu.c
===================================================================
--- kvm.orig/arch/x86/kvm/mmu.c
+++ kvm/arch/x86/kvm/mmu.c
@@ -2625,7 +2625,8 @@ EXPORT_SYMBOL_GPL(kvm_mmu_unprotect_page
void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
{
- while (vcpu->kvm->arch.n_free_mmu_pages < KVM_REFILL_PAGES) {
+ while (vcpu->kvm->arch.n_free_mmu_pages < KVM_REFILL_PAGES &&
+ !list_empty(&vcpu->kvm->arch.active_mmu_pages)) {
struct kvm_mmu_page *sp;
sp = container_of(vcpu->kvm->arch.active_mmu_pages.prev,
ack
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