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virtio pmem: remove memdev null check

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Coverity reports 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.

We are removing 'pmem->memdev' null check here as memdev will never
be null in this function.

Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Message-Id: <20190712073554.21918-3-pagupta@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Pankaj Gupta 2019-07-12 13:05:53 +05:30 committed by Michael S. Tsirkin
parent f37f471262
commit 7b8a847424
1 changed files with 2 additions and 2 deletions
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4
hw/virtio/virtio-pmem.c
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@ -134,8 +134,8 @@ 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));
vi->size = memory_region_size(&pmem->memdev->mr);
vi->memdev = object_get_canonical_path(OBJECT(pmem->memdev));
}
static MemoryRegion *virtio_pmem_get_memory_region(VirtIOPMEM *pmem,