Commit dc48ebe3 authored Jan 03, 2017 by Arvind Yadav Committed by Greg Kroah-Hartman Aug 06, 2017

vfio-pci: Handle error from pci_iomap




[ Upstream commit e19f32da5ded958238eac1bbe001192acef191a2 ]

Here, pci_iomap can fail, handle this case release selected
pci regions and return -ENOMEM.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 93794239

drivers/vfio/pci/vfio_pci.c

+4 −0

Original line number	Original line	Diff line number	Diff line
	@@ -902,6 +902,10 @@ static int vfio_pci_mmap(void device_data, struct vm_area_struct vma)
	return ret;		return ret;

	vdev->barmap[index] = pci_iomap(pdev, index, 0);		vdev->barmap[index] = pci_iomap(pdev, index, 0);
			if (!vdev->barmap[index]) {
			pci_release_selected_regions(pdev, 1 << index);
			return -ENOMEM;
			}
	}		}

	vma->vm_private_data = vdev;		vma->vm_private_data = vdev;