[PATCH] KVM: PPC: fix leakage of page release in kvmppc_patch_dcbz()

[Wei Yongjun]

Add kvm_release_page_clean() after is_error_page() to avoid
leakage of error page. No test.

Signed-off-by: Wei Yongjun <yj...@cn.fujitsu.com>
---
 arch/powerpc/kvm/book3s.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index a3cef30..5baa3ab 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -415,8 +415,10 @@ 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;
-- 
1.7.0.4


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