From f29b2673d3fc7ae38ec22922e9cdc75ee37386b5 Mon Sep 17 00:00:00 2001 From: Mark McLoughlin <markmc@redhat.com> Date: Mon, 1 Dec 2008 13:57:47 +0000 Subject: [PATCH] KVM: don't free an unallocated irq source id Set assigned_dev->irq_source_id to -1 so that we can avoid freeing a source ID which we never allocated. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> --- virt/kvm/kvm_main.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 8dab7cedd50b8..63fd882094394 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -210,7 +210,10 @@ static void kvm_free_assigned_device(struct kvm *kvm, pci_disable_msi(assigned_dev->dev); kvm_unregister_irq_ack_notifier(&assigned_dev->ack_notifier); - kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id); + + if (assigned_dev->irq_source_id != -1) + kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id); + assigned_dev->irq_source_id = -1; if (cancel_work_sync(&assigned_dev->interrupt_work)) /* We had pending work. That means we will have to take @@ -466,7 +469,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm, match->host_busnr = assigned_dev->busnr; match->host_devfn = assigned_dev->devfn; match->dev = dev; - + match->irq_source_id = -1; match->kvm = kvm; list_add(&match->list, &kvm->arch.assigned_dev_head); -- GitLab