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vfio-pci: Handle error from pci_iomap

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[ 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>
This commit is contained in:
Arvind Yadav 2017-01-03 17:26:46 +05:30 • committed by Greg Kroah-Hartman
parent 93794239c6
commit dc48ebe330
1 changed files with 4 additions and 0 deletions
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4
drivers/vfio/pci/vfio_pci.c
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@ -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;