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| author | Yan Zhao <yan.y.zhao@intel.com> | 2020-04-08 03:12:34 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-06 08:15:14 +0200 |
| commit | 08e90b299d4ec663e044ce85288d8c15957836c7 (patch) | |
| tree | 8f84a91e8ff942244dd39a9b1bb2da4f602b845d | |
| parent | 44e2a98e2b58649b9bde0042975626bb1bea3ad9 (diff) | |
| download | linux-08e90b299d4ec663e044ce85288d8c15957836c7.tar.gz linux-08e90b299d4ec663e044ce85288d8c15957836c7.tar.bz2 linux-08e90b299d4ec663e044ce85288d8c15957836c7.zip | |
vfio: avoid possible overflow in vfio_iommu_type1_pin_pages
commit 0ea971f8dcd6dee78a9a30ea70227cf305f11ff7 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 d864277ea16f..f471600985ff 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -593,7 +593,7 @@ 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) |