Merge "iommu: iommu-debug: limit memory address exposure" (4ee2eba6) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/iommu/iommu-debug.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -1488,6 +1488,10 @@ static ssize_t iommu_debug_pte_read(struct file file, char __user ubuf,
		ssize_t retval;
		size_t buflen;

		if (kptr_restrict != 0) {
		pr_err("kptr_restrict needs to be disabled.\n");
		return -EPERM;
		}
		if (!dev->archdata.mapping) {
		pr_err("No mapping. Did you already attach?\n");
		return -EINVAL;
		@@ -1607,6 +1611,10 @@ static ssize_t iommu_debug_dma_atos_read(struct file file, char __user ubuf,
		ssize_t retval;
		size_t buflen;

		if (kptr_restrict != 0) {
		pr_err("kptr_restrict needs to be disabled.\n");
		return -EPERM;
		}
		if (!dev->archdata.mapping) {
		pr_err("No mapping. Did you already attach?\n");
		return -EINVAL;