Index: sys/fs/fifofs/fifo_vnops.c
===================================================================
--- sys/fs/fifofs/fifo_vnops.c
+++ sys/fs/fifofs/fifo_vnops.c
@@ -274,8 +274,13 @@
 
 	vp = ap->a_vp;
 	fip = vp->v_fifoinfo;
-	cpipe = fip->fi_pipe;
 	ASSERT_VOP_ELOCKED(vp, "fifo_close");
+	if (fip == NULL) {
+		VNASSERT(vp->v_iflag & VI_DOOMED, vp,
+		    ("%s: vnode without fifoinfo and not VI_DOOMED", __func__));
+		return (0);
+	}
+	cpipe = fip->fi_pipe;
 	if (ap->a_fflag & FREAD) {
 		fip->fi_readers--;
 		if (fip->fi_readers == 0) {