Index: head/sys/vm/vm_page.c
===================================================================
--- head/sys/vm/vm_page.c
+++ head/sys/vm/vm_page.c
@@ -1748,6 +1748,7 @@
 			}
 			m->object = NULL;
 			m->oflags = VPO_UNMANAGED;
+			m->busy_lock = VPB_UNBUSIED;
 			vm_page_free(m);
 			return (NULL);
 		}
@@ -1949,6 +1950,7 @@
 						m->object = NULL;
 						m->oflags |= VPO_UNMANAGED;
 					}
+					m->busy_lock = VPB_UNBUSIED;
 					vm_page_free(m);
 				}
 				return (NULL);