From: Yan Zhao yan.y.zhao@intel.com
[ Upstream commit 0ea971f8dcd6dee78a9a30ea70227cf305f11ff7 ]
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: Sasha Levin sashal@kernel.org --- drivers/vfio/vfio_iommu_type1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index c362757540866..c635ba3167f7b 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -598,7 +598,7 @@ 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)