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| author |   Yan Zhao <yan.y.zhao@intel.com> | 2020-04-08 03:12:34 -0400 |
|---|---|---|
| committer |   Alex Williamson <alex.williamson@redhat.com> | 2020-04-20 12:40:16 -0600 |
| commit | 0ea971f8dcd6dee78a9a30ea70227cf305f11ff7 (patch) | |
| tree | f0f4a20f29d687e32a624bae583175f4444d41a8 /drivers/vfio/vfio_iommu_type1.c | |
| parent | vfio: checking of validity of user vaddr in vfio_dma_rw (diff) | |
| download | wireguard-linux-0ea971f8dcd6dee78a9a30ea70227cf305f11ff7.tar.xz wireguard-linux-0ea971f8dcd6dee78a9a30ea70227cf305f11ff7.zip | |
vfio: avoid possible overflow in vfio_iommu_type1_pin_pages
add parentheses to avoid possible vaddr overflow.
Fixes: a54eb55045ae ("vfio iommu type1: Add support for mediated devices")
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/vfio_iommu_type1.c')
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index aa501e826e70..fbc58284b333 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -555,7 +555,7 @@ static int vfio_iommu_type1_pin_pages(void *iommu_data, continue; } - remote_vaddr = dma->vaddr + iova - dma->iova; + remote_vaddr = dma->vaddr + (iova - dma->iova); ret = vfio_pin_page_external(dma, remote_vaddr, &phys_pfn[i], do_accounting); if (ret) |