Commit 2e2e35d5 authored Nov 03, 2017 by Lu Baolu Committed by Alex Williamson Nov 03, 2017

iommu/vt-d: Missing checks for pasid tables if allocation fails



intel_svm_alloc_pasid_tables() might return an error but never be
checked by the callers. Later when intel_svm_bind_mm() is called,
there are no checks for valid pasid tables before enabling them.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Liu, Yi L <yi.l.liu@intel.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

parent a5934725

drivers/iommu/intel-svm.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -292,7 +292,7 @@ int intel_svm_bind_mm(struct device dev, int pasid, int flags, struct svm_dev_
		int pasid_max;
		int ret;

		if (WARN_ON(!iommu))
		if (WARN_ON(!iommu \|\| !iommu->pasid_table))
		return -EINVAL;

		if (dev_is_pci(dev)) {