apic: kvm-apic: Fix crash due to access to freed memory region
kvm-apic.io_memory memory region had its parent set to NULL at memory_region_init_io() time, so it ended up as a child in /unattached contaner. As result when kvm-apic instance was deleted, the child property /unattached/kvm-apic-msi[XXX] contained a reference to kvm-apic.io_memory address which was freed as part of kvm-apic. Do the same as 'apic' and make kvm-apic instance the owner of the memory region so that it won't end up in /unattached and gets cleanly released along with related kvm-apic instance. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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@ -184,8 +184,8 @@ static void kvm_apic_realize(DeviceState *dev, Error **errp)
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{
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{
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APICCommonState *s = APIC_COMMON(dev);
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APICCommonState *s = APIC_COMMON(dev);
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memory_region_init_io(&s->io_memory, NULL, &kvm_apic_io_ops, s, "kvm-apic-msi",
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memory_region_init_io(&s->io_memory, OBJECT(s), &kvm_apic_io_ops, s,
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APIC_SPACE_SIZE);
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"kvm-apic-msi", APIC_SPACE_SIZE);
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if (kvm_has_gsi_routing()) {
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if (kvm_has_gsi_routing()) {
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msi_nonbroken = true;
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msi_nonbroken = true;
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