Index: sys/vm/vm_domainset.c
===================================================================
--- sys/vm/vm_domainset.c
+++ sys/vm/vm_domainset.c
@@ -262,8 +262,11 @@
     int *flags)
 {
 
-	di->di_flags = *flags;
-	*flags = (di->di_flags & ~M_WAITOK) | M_NOWAIT;
+	if (flags != NULL) {
+		di->di_flags = *flags;
+		*flags = (di->di_flags & ~M_WAITOK) | M_NOWAIT;
+	} else
+		di->di_flags = M_NOWAIT;
 	vm_domainset_iter_first(di, domain);
 	if (vm_page_count_min_domain(*domain))
 		vm_domainset_iter_policy(di, domain);
Index: sys/vm/vm_kern.c
===================================================================
--- sys/vm/vm_kern.c
+++ sys/vm/vm_kern.c
@@ -266,7 +266,7 @@
 	vm_offset_t addr;
 	int domain;
 
-	vm_domainset_iter_policy_init(&di, ds, &domain, &flags);
+	vm_domainset_iter_policy_init(&di, ds, &domain, NULL);
 	do {
 		addr = kmem_alloc_attr_domain(domain, size, flags, low, high,
 		    memattr);
@@ -348,7 +348,7 @@
 	vm_offset_t addr;
 	int domain;
 
-	vm_domainset_iter_policy_init(&di, ds, &domain, &flags);
+	vm_domainset_iter_policy_init(&di, ds, &domain, NULL);
 	do {
 		addr = kmem_alloc_contig_domain(domain, size, flags, low, high,
 		    alignment, boundary, memattr);