From: Yan Zhao <yan.y.zhao@xxxxxxxxx>
[ 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@xxxxxxxxx>
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 f77a9b3370b5f..690ae081eedc7 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -591,7 +591,7 @@ 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)
--
2.20.1
