From: Avi Kivity Date: Sun, 23 Mar 2008 12:21:08 +0000 (+0200) Subject: KVM: MMU: Fix memory leak on guest demand faults X-Git-Tag: MMI-PSA29.97-13-9~35862^2 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e48bb497b95a0f7127f9ff596a6b4c4b206f7dcf;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git KVM: MMU: Fix memory leak on guest demand faults While backporting 72dc67a69690288538142df73a7e3ac66fea68dc, a gfn_to_page() call was duplicated instead of moved (due to an unrelated patch not being present in mainline). This caused a page reference leak, resulting in a fairly massive memory leak. Fix by removing the extraneous gfn_to_page() call. Signed-off-by: Avi Kivity --- diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 4ba85d95bd29..e55af12e11b7 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1412,7 +1412,7 @@ static void mmu_guess_page_from_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, up_read(¤t->mm->mmap_sem); vcpu->arch.update_pte.gfn = gfn; - vcpu->arch.update_pte.page = gfn_to_page(vcpu->kvm, gfn); + vcpu->arch.update_pte.page = page; } void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,