diff options
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index f11347a590d7..ab21ef1ddb3c 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -2159,7 +2159,8 @@ __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn, phys_addr_t pteval; u64 attr; - BUG_ON(!domain_pfn_supported(domain, iov_pfn + nr_pages - 1)); + if (unlikely(!domain_pfn_supported(domain, iov_pfn + nr_pages - 1))) + return -EINVAL; if ((prot & (DMA_PTE_READ|DMA_PTE_WRITE)) == 0) return -EINVAL; @@ -4314,8 +4315,9 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain, /* Cope with horrid API which requires us to unmap more than the size argument if it happens to be a large-page mapping. */ - BUG_ON(!pfn_to_dma_pte(dmar_domain, iova >> VTD_PAGE_SHIFT, &level, - GFP_ATOMIC)); + if (unlikely(!pfn_to_dma_pte(dmar_domain, iova >> VTD_PAGE_SHIFT, + &level, GFP_ATOMIC))) + return 0; if (size < VTD_PAGE_SIZE << level_to_offset_bits(level)) size = VTD_PAGE_SIZE << level_to_offset_bits(level); |