X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-linux.git;a=blobdiff_plain;f=drivers%2Fiommu%2Famd_iommu_v2.c;h=d21d4edf7236abac49072c086290b76d2ae201b5;hp=1131664b918b0a574c7cc654a6a3cd04107f8e81;hb=523e13455ec9ec4457a5a1d24ff7132949742b70;hpb=4184a8fc57a43faa2625988cc87031db77af9d98

diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 1131664b918b..d21d4edf7236 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -516,6 +516,13 @@ static void do_fault(struct work_struct *work)
 		goto out;
 	}
 
+	if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE))) {
+		/* handle_mm_fault would BUG_ON() */
+		up_read(&mm->mmap_sem);
+		handle_fault_error(fault);
+		goto out;
+	}
+
 	ret = handle_mm_fault(mm, vma, address, write);
 	if (ret & VM_FAULT_ERROR) {
 		/* failed to service fault */