[Qemu-devel] [PATCH 1/3] virtio pmem: fix wrong mem region condition

Pankaj Gupta posted 3 patches 6 years, 7 months ago
Maintainers: "Michael S. Tsirkin" <mst@redhat.com>
[Qemu-devel] [PATCH 1/3] virtio pmem: fix wrong mem region condition
Posted by Pankaj Gupta 6 years, 7 months ago
Coverity reported memory region returns zero
for non-null value. This is because of wrong
arguments to '?:' , fixing this.

Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
---
 hw/virtio/virtio-pmem-pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/virtio/virtio-pmem-pci.c b/hw/virtio/virtio-pmem-pci.c
index 8b2d0dbccc..0da6627469 100644
--- a/hw/virtio/virtio-pmem-pci.c
+++ b/hw/virtio/virtio-pmem-pci.c
@@ -57,7 +57,7 @@ static uint64_t virtio_pmem_pci_get_plugged_size(const MemoryDeviceState *md,
     MemoryRegion *mr = vpc->get_memory_region(pmem, errp);
 
     /* the plugged size corresponds to the region size */
-    return mr ? 0 : memory_region_size(mr);
+    return mr ? memory_region_size(mr) : 0;
 }
 
 static void virtio_pmem_pci_fill_device_info(const MemoryDeviceState *md,
-- 
2.14.5


Re: [Qemu-devel] [PATCH 1/3] virtio pmem: fix wrong mem region condition
Posted by David Hildenbrand 6 years, 6 months ago
On 12.07.19 09:35, Pankaj Gupta wrote:
> Coverity reported memory region returns zero
> for non-null value. This is because of wrong
> arguments to '?:' , fixing this.
> 
> Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
> ---
>  hw/virtio/virtio-pmem-pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/virtio/virtio-pmem-pci.c b/hw/virtio/virtio-pmem-pci.c
> index 8b2d0dbccc..0da6627469 100644
> --- a/hw/virtio/virtio-pmem-pci.c
> +++ b/hw/virtio/virtio-pmem-pci.c
> @@ -57,7 +57,7 @@ static uint64_t virtio_pmem_pci_get_plugged_size(const MemoryDeviceState *md,
>      MemoryRegion *mr = vpc->get_memory_region(pmem, errp);
>  
>      /* the plugged size corresponds to the region size */
> -    return mr ? 0 : memory_region_size(mr);
> +    return mr ? memory_region_size(mr) : 0;
>  }
>  
>  static void virtio_pmem_pci_fill_device_info(const MemoryDeviceState *md,
> 

Reviewed-by: David Hildenbrand <david@redhat.com>

-- 

Thanks,

David / dhildenb

Re: [Qemu-devel] [PATCH 1/3] virtio pmem: fix wrong mem region condition
Posted by Philippe Mathieu-Daudé 6 years, 7 months ago
On 7/12/19 9:35 AM, Pankaj Gupta wrote:
> Coverity reported memory region returns zero
> for non-null value. This is because of wrong
> arguments to '?:' , fixing this.
> 

Please amend:

Fixes: Coverity (CID 1403009)

> Signed-off-by: Pankaj Gupta <pagupta@redhat.com>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  hw/virtio/virtio-pmem-pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/virtio/virtio-pmem-pci.c b/hw/virtio/virtio-pmem-pci.c
> index 8b2d0dbccc..0da6627469 100644
> --- a/hw/virtio/virtio-pmem-pci.c
> +++ b/hw/virtio/virtio-pmem-pci.c
> @@ -57,7 +57,7 @@ static uint64_t virtio_pmem_pci_get_plugged_size(const MemoryDeviceState *md,
>      MemoryRegion *mr = vpc->get_memory_region(pmem, errp);
>  
>      /* the plugged size corresponds to the region size */
> -    return mr ? 0 : memory_region_size(mr);
> +    return mr ? memory_region_size(mr) : 0;
>  }
>  
>  static void virtio_pmem_pci_fill_device_info(const MemoryDeviceState *md,
> 

Re: [Qemu-devel] [PATCH 1/3] virtio pmem: fix wrong mem region condition
Posted by Cornelia Huck 6 years, 7 months ago
On Fri, 12 Jul 2019 13:05:52 +0530
Pankaj Gupta <pagupta@redhat.com> wrote:

> Coverity reported memory region returns zero
> for non-null value. This is because of wrong
> arguments to '?:' , fixing this.
> 
> Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
> ---
>  hw/virtio/virtio-pmem-pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>

Re: [Qemu-devel] [PATCH 1/3] virtio pmem: fix wrong mem region condition
Posted by Stefano Garzarella 6 years, 7 months ago
On Fri, Jul 12, 2019 at 01:05:52PM +0530, Pankaj Gupta wrote:
> Coverity reported memory region returns zero
> for non-null value. This is because of wrong
> arguments to '?:' , fixing this.
> 
> Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
> ---
>  hw/virtio/virtio-pmem-pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>

> 
> diff --git a/hw/virtio/virtio-pmem-pci.c b/hw/virtio/virtio-pmem-pci.c
> index 8b2d0dbccc..0da6627469 100644
> --- a/hw/virtio/virtio-pmem-pci.c
> +++ b/hw/virtio/virtio-pmem-pci.c
> @@ -57,7 +57,7 @@ static uint64_t virtio_pmem_pci_get_plugged_size(const MemoryDeviceState *md,
>      MemoryRegion *mr = vpc->get_memory_region(pmem, errp);
>  
>      /* the plugged size corresponds to the region size */
> -    return mr ? 0 : memory_region_size(mr);
> +    return mr ? memory_region_size(mr) : 0;
>  }
>  
>  static void virtio_pmem_pci_fill_device_info(const MemoryDeviceState *md,
> -- 
> 2.14.5