[vivek-drm-tip:vfio_dmabuf_v1 7/7] drivers/vfio/pci/dma_buf.c:317:40: sparse: sparse: incorrect type in argument 1 (different address spaces)

[vivek-drm-tip:vfio_dmabuf_v1 7/7] drivers/vfio/pci/dma_buf.c:317:40: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot]

tree:   https://gitlab.freedesktop.org/Vivek/drm-tip.git vfio_dmabuf_v1
head:   5ef225e951f7d39f11703af6060984e434c6dc4b
commit: 5ef225e951f7d39f11703af6060984e434c6dc4b [7/7] vfio/pci: Allow MMIO regions to be exported through dma-buf
config: x86_64-randconfig-123-20240423 (https://download.01.org/0day-ci/archive/20240423/202404231109.7NK4BRAU-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240423/202404231109.7NK4BRAU-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404231109.7NK4BRAU-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/vfio/pci/dma_buf.c:317:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct file [noderef] __rcu **f @@     got struct file ** @@
   drivers/vfio/pci/dma_buf.c:317:40: sparse:     expected struct file [noderef] __rcu **f
   drivers/vfio/pci/dma_buf.c:317:40: sparse:     got struct file **
   drivers/vfio/pci/dma_buf.c:336:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct file [noderef] __rcu **f @@     got struct file ** @@
   drivers/vfio/pci/dma_buf.c:336:40: sparse:     expected struct file [noderef] __rcu **f
   drivers/vfio/pci/dma_buf.c:336:40: sparse:     got struct file **

vim +317 drivers/vfio/pci/dma_buf.c

   308	
   309	void vfio_pci_dma_buf_move(struct vfio_pci_core_device *vdev, bool revoked)
   310	{
   311		struct vfio_pci_dma_buf *priv;
   312		struct vfio_pci_dma_buf *tmp;
   313	
   314		lockdep_assert_held_write(&vdev->memory_lock);
   315	
   316		list_for_each_entry_safe(priv, tmp, &vdev->dmabufs, dmabufs_elm) {
 > 317			if (!get_file_rcu(&priv->dmabuf->file))
   318				continue;
   319			if (priv->revoked != revoked) {
   320				dma_resv_lock(priv->dmabuf->resv, NULL);
   321				priv->revoked = revoked;
   322				dma_buf_move_notify(priv->dmabuf);
   323				dma_resv_unlock(priv->dmabuf->resv);
   324			}
   325			dma_buf_put(priv->dmabuf);
   326		}
   327	}
   328	

-- 
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