From: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> [ Upstream commit 51d8838d66d3249508940d8f59b07701f2129723 ] In the error path of map_sg, free_iova_fast is being called with address instead of the pfn. This results in a bad value getting into the rcache, and can result in hitting a BUG_ON when iova_magazine_free_pfns is called. Cc: Joerg Roedel <joro@xxxxxxxxxx> Cc: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx> Signed-off-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Fixes: 80187fd39dcb ("iommu/amd: Optimize map_sg and unmap_sg") Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/iommu/amd_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index bee0dfb7b93b1..5edc8e6f27114 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2554,7 +2554,7 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, } out_free_iova: - free_iova_fast(&dma_dom->iovad, address, npages); + free_iova_fast(&dma_dom->iovad, address >> PAGE_SHIFT, npages); out_err: return 0; -- 2.19.1