AMD IOMMU: check for next_bit also in unmapped area



Impact: fix possible use of stale IO/TLB entries

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

parent 695b5676

arch/x86/kernel/amd_iommu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -537,7 +537,7 @@ static void dma_ops_free_addresses(struct dma_ops_domain *dom,
		address >>= PAGE_SHIFT;
		iommu_area_free(dom->bitmap, address, pages);

		if (address + pages >= dom->next_bit)
		if (address >= dom->next_bit)
		dom->need_flush = true;
		}