New kernels with debug show panic() from __phys_addr() checks. Avoid calling virt_to_phys() when pasid_state_tbl pointer is null
To: Joerg Roedel <[email protected]> To: [email protected]> Cc: [email protected] Cc: David Woodhouse <[email protected]> Cc: Jacob Pan <[email protected]> Cc: Ashok Raj <[email protected]> Signed-off-by: Ashok Raj <[email protected]> --- drivers/iommu/intel-iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 687f18f..5c6118d 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -5341,7 +5341,8 @@ int intel_iommu_enable_pasid(struct intel_iommu *iommu, struct intel_svm_dev *sd sdev->sid = PCI_DEVID(info->bus, info->devfn); if (!(ctx_lo & CONTEXT_PASIDE)) { - context[1].hi = (u64)virt_to_phys(iommu->pasid_state_table); + if (iommu->pasid_state_table) + context[1].hi = (u64)virt_to_phys(iommu->pasid_state_table); context[1].lo = (u64)virt_to_phys(iommu->pasid_table) | intel_iommu_get_pts(iommu); -- 2.7.4
