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authorLu Baolu <baolu.lu@linux.intel.com>2017-11-03 19:51:32 +0300
committerAlex Williamson <alex.williamson@redhat.com>2017-11-03 19:51:32 +0300
commit2e2e35d512798193b4165ed884a5d1d9b181e231 (patch)
tree2b162122b86deba8109f27e5ead56ac08fc36be4 /drivers/iommu
parenta593472591a5cf2d91244bc3f319c9dd91119343 (diff)
downloadlinux-2e2e35d512798193b4165ed884a5d1d9b181e231.tar.xz
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>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/intel-svm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index f6697e55c2d4..43280ca282df 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -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)) {