> >
> > From: Pankaj Gupta <pagu...@redhat.com>
> >
> > This is the implementation of virtio-pmem device. Support will require
> > machine changes for the architectures that will support it, so it will
> > not yet be compiled. It can be unlocked with VIRTIO_PMEM_SUPPORTED per
> > machine and disabled globally via VIRTIO_PMEM.
> >
> > We cannot use the "addr" property as that is already used e.g. for
> > virtio-pci/pci devices. And we will have e.g. virtio-pmem-pci as a proxy.
> > So we have to choose a different one (unfortunately). "memaddr" it is.
> > That name should ideally be used by all other virtio-* based memory
> > devices in the future.
> > -device virtio-pmem-pci,id=p0,bus=bux0,addr=0x01,memaddr=0x1000000...
> >
> > Acked-by: Markus Armbruster <arm...@redhat.com>
> > [ QAPI bits ]
> > Signed-off-by: Pankaj Gupta <pagu...@redhat.com>'-numa node,memdev
> > [ MemoryDevice/MemoryRegion changes, cleanups, addr property "memaddr",
> > split up patches, unplug handler ]
> > Signed-off-by: David Hildenbrand <da...@redhat.com>
> > Message-Id: <20190619094907.10131-2-pagu...@redhat.com>
> > Reviewed-by: Michael S. Tsirkin <m...@redhat.com>
> > Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
>
> > +static void virtio_pmem_fill_device_info(const VirtIOPMEM *pmem,
> > + VirtioPMEMDeviceInfo *vi)
> > +{
> > + vi->memaddr = pmem->start;
> > + vi->size = pmem->memdev ? memory_region_size(&pmem->memdev->mr) : 0;
> > + vi->memdev = object_get_canonical_path(OBJECT(pmem->memdev));
>
> Hi; Coverity points out (CID 1403009) that when we're assigning
> vi->size we handle the "pmem->memdev is NULL" case; but we then
> pass it into object_get_canonical_path(), which unconditionally
> dereferences it and will crash if it is NULL. If this pointer
> can be NULL then we need to do something else here.
This will never be NULL. I will send below patch to pass coverity.
- vi->size = pmem->memdev ? memory_region_size(&pmem->memdev->mr) : 0;
+ vi->size = memory_region_size(&pmem->memdev->mr);
Thanks,
Pankaj
>
> > +}
>
> thanks
> -- PMM
>
>
