From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Graf Subject: [PULL 15/36] KVM: PPC: NULL return of kvmppc_mmu_hpte_cache_next should be handled Date: Wed, 29 Jan 2014 17:12:54 +0100 Message-ID: <1391011995-4891-16-git-send-email-agraf@suse.de> References: <1391011995-4891-1-git-send-email-agraf@suse.de> Cc: kvm-ppc@vger.kernel.org, gleb@redhat.com, Paolo Bonzini , Zhouyi Zhou , Zhouyi Zhou To: kvm@vger.kernel.org Return-path: In-Reply-To: <1391011995-4891-1-git-send-email-agraf@suse.de> Sender: kvm-ppc-owner@vger.kernel.org List-Id: kvm.vger.kernel.org From: Zhouyi Zhou NULL return of kvmppc_mmu_hpte_cache_next should be handled Signed-off-by: Zhouyi Zhou Signed-off-by: Alexander Graf --- arch/powerpc/kvm/book3s_32_mmu_host.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/powerpc/kvm/book3s_32_mmu_host.c b/arch/powerpc/kvm/book3s_32_mmu_host.c index 3a0abd2..5fac89d 100644 --- a/arch/powerpc/kvm/book3s_32_mmu_host.c +++ b/arch/powerpc/kvm/book3s_32_mmu_host.c @@ -243,6 +243,11 @@ next_pteg: /* Now tell our Shadow PTE code about the new page */ pte = kvmppc_mmu_hpte_cache_next(vcpu); + if (!pte) { + kvm_release_pfn_clean(hpaddr >> PAGE_SHIFT); + r = -EAGAIN; + goto out; + } dprintk_mmu("KVM: %c%c Map 0x%llx: [%lx] 0x%llx (0x%llx) -> %lx\n", orig_pte->may_write ? 'w' : '-', -- 1.8.1.4