From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out2-smtp.messagingengine.com ([66.111.4.26]:41812 "EHLO out2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751469AbcBXByb (ORCPT ); Tue, 23 Feb 2016 20:54:31 -0500 Received: from compute2.internal (compute2.nyi.internal [10.202.2.42]) by mailout.nyi.internal (Postfix) with ESMTP id E7E5120B3A for ; Tue, 23 Feb 2016 20:54:30 -0500 (EST) Subject: FAILED: patch "[PATCH] KVM: s390: fix guest fprs memory leak" failed to apply to 4.4-stable tree To: dahi@linux.vnet.ibm.com, borntraeger@de.ibm.com, farman@linux.vnet.ibm.com Cc: From: Date: Tue, 23 Feb 2016 17:54:29 -0800 Message-ID: <14562788696831@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >>From 9c7ebb613bffea2feef4ec562ba1dbcaa810942b Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Fri, 22 Jan 2016 14:55:56 +0100 Subject: [PATCH] KVM: s390: fix guest fprs memory leak fprs is never freed, therefore resulting in a memory leak if kvm_vcpu_init() fails or the vcpu is destroyed. Fixes: 9977e886cbbc ("s390/kernel: lazy restore fpu registers") Cc: stable@vger.kernel.org # v4.3+ Reported-by: Eric Farman Signed-off-by: David Hildenbrand Reviewed-by: Eric Farman Signed-off-by: Christian Borntraeger diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 835d60bedb54..797dbc4e11c3 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -1244,6 +1244,7 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) if (vcpu->kvm->arch.use_cmma) kvm_s390_vcpu_unsetup_cmma(vcpu); + kfree(vcpu->arch.guest_fpregs.fprs); free_page((unsigned long)(vcpu->arch.sie_block)); kvm_vcpu_uninit(vcpu); @@ -1661,12 +1662,14 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, rc = kvm_vcpu_init(vcpu, kvm, id); if (rc) - goto out_free_sie_block; + goto out_free_fprs; VM_EVENT(kvm, 3, "create cpu %d at 0x%pK, sie block at 0x%pK", id, vcpu, vcpu->arch.sie_block); trace_kvm_s390_create_vcpu(id, vcpu, vcpu->arch.sie_block); return vcpu; +out_free_fprs: + kfree(vcpu->arch.guest_fpregs.fprs); out_free_sie_block: free_page((unsigned long)(vcpu->arch.sie_block)); out_free_cpu: