| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 089/105] vfio-pci: Handle error from pci_iomap | Date | Fri, 4 Aug 2017 16:15:57 -0700 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Arvind Yadav <arvind.yadav.cs@gmail.com>
[ 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> --- drivers/vfio/pci/vfio_pci.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -1173,6 +1173,10 @@ static int vfio_pci_mmap(void *device_da return ret; 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;
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