Commit 646bab55 authored by Wei Yongjun's avatar Wei Yongjun Committed by Avi Kivity
Browse files

KVM: PPC: fix leakage of error page in kvmppc_patch_dcbz() 



Add kvm_release_page_clean() after is_error_page() to avoid
leakage of error page.

Signed-off-by: default avatarWei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 8ec4722d

arch/powerpc/kvm/book3s.c

+3 −1
Original line number Diff line number Diff line
@@ -455,8 +455,10 @@ static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte) 
	int i;



	hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT);

	if (is_error_page(hpage))

	if (is_error_page(hpage)) {

		kvm_release_page_clean(hpage);

		return;

	}



	hpage_offset = pte->raddr & ~PAGE_MASK;

	hpage_offset &= ~0xFFFULL;

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