diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
index 1a17b07..9ba54cc 100644
--- a/arch/x86_64/mm/fault.c
+++ b/arch/x86_64/mm/fault.c
@@ -464,7 +464,7 @@
 		case PF_PROT:		/* read, present */
 			goto bad_area;
 		case 0:			/* read, not present */
-			if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+			if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))
 				goto bad_area;
 	}