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-rw-r--r--drivers/pci/intel-iommu.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index dcf0295a9b6..53075424a43 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -826,8 +826,10 @@ static void dma_pte_free_pagetable(struct dmar_domain *domain,
continue;
}
do {
- free_pgtable_page(phys_to_virt(dma_pte_addr(pte)));
- dma_clear_pte(pte);
+ if (dma_pte_present(pte)) {
+ free_pgtable_page(phys_to_virt(dma_pte_addr(pte)));
+ dma_clear_pte(pte);
+ }
pte++;
tmp += level_size(level);
} while (!first_pte_in_page(pte) &&