[PATCH v12 72/84] KVM: PPC: Remove extra get_page() to fix page refcount leak

[Sean Christopherson]

Don't manually do get_page() when patching dcbz, as gfn_to_page() gifts
the caller a reference.  I.e. doing get_page() will leak the page due to
not putting all references.

Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
 arch/powerpc/kvm/book3s_pr.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 1bdcd4ee4813..ae4757ac0848 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -652,7 +652,6 @@ static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
 	hpage_offset &= ~0xFFFULL;
 	hpage_offset /= 4;
 
-	get_page(hpage);
 	page = kmap_atomic(hpage);
 
 	/* patch dcbz into reserved instruction, so we trap */
-- 
2.46.0.rc1.232.g9752f9e123-goog