Index: head/sys/dev/hyperv/netvsc/hv_net_vsc.h
===================================================================
--- head/sys/dev/hyperv/netvsc/hv_net_vsc.h
+++ head/sys/dev/hyperv/netvsc/hv_net_vsc.h
@@ -66,8 +66,6 @@
 
 #define HN_USE_TXDESC_BUFRING
 
-MALLOC_DECLARE(M_NETVSC);
-
 /*
  * The following arguably belongs in a separate header file
  */
Index: head/sys/dev/hyperv/netvsc/hv_net_vsc.c
===================================================================
--- head/sys/dev/hyperv/netvsc/hv_net_vsc.c
+++ head/sys/dev/hyperv/netvsc/hv_net_vsc.c
@@ -52,8 +52,6 @@
 #include <dev/hyperv/netvsc/if_hnreg.h>
 #include <dev/hyperv/netvsc/if_hnvar.h>
 
-MALLOC_DEFINE(M_NETVSC, "netvsc", "Hyper-V netvsc driver");
-
 /*
  * Forward declarations
  */
@@ -308,7 +306,7 @@
 
 	sc->hn_chim_bmap_cnt = sc->hn_chim_cnt / LONG_BIT;
 	sc->hn_chim_bmap = malloc(sc->hn_chim_bmap_cnt * sizeof(u_long),
-	    M_NETVSC, M_WAITOK | M_ZERO);
+	    M_DEVBUF, M_WAITOK | M_ZERO);
 
 	/* Done! */
 	sc->hn_flags |= HN_FLAG_CHIM_CONNECTED;
@@ -427,7 +425,7 @@
 	}
 
 	if (sc->hn_chim_bmap != NULL) {
-		free(sc->hn_chim_bmap, M_NETVSC);
+		free(sc->hn_chim_bmap, M_DEVBUF);
 		sc->hn_chim_bmap = NULL;
 	}
 	return (0);
Index: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
===================================================================
--- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
+++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
@@ -2606,7 +2606,7 @@
 	sc->hn_rx_ring_inuse = sc->hn_rx_ring_cnt;
 
 	sc->hn_rx_ring = malloc(sizeof(struct hn_rx_ring) * sc->hn_rx_ring_cnt,
-	    M_NETVSC, M_WAITOK | M_ZERO);
+	    M_DEVBUF, M_WAITOK | M_ZERO);
 
 #if defined(INET) || defined(INET6)
 #if __FreeBSD_version >= 1100095
@@ -2647,7 +2647,7 @@
 		rxr->hn_ifp = sc->hn_ifp;
 		if (i < sc->hn_tx_ring_cnt)
 			rxr->hn_txr = &sc->hn_tx_ring[i];
-		rxr->hn_rdbuf = malloc(NETVSC_PACKET_SIZE, M_NETVSC, M_WAITOK);
+		rxr->hn_rdbuf = malloc(NETVSC_PACKET_SIZE, M_DEVBUF, M_WAITOK);
 		rxr->hn_rx_idx = i;
 		rxr->hn_rxbuf = sc->hn_rxbuf;
 
@@ -2794,9 +2794,9 @@
 #if defined(INET) || defined(INET6)
 		tcp_lro_free(&rxr->hn_lro);
 #endif
-		free(rxr->hn_rdbuf, M_NETVSC);
+		free(rxr->hn_rdbuf, M_DEVBUF);
 	}
-	free(sc->hn_rx_ring, M_NETVSC);
+	free(sc->hn_rx_ring, M_DEVBUF);
 	sc->hn_rx_ring = NULL;
 
 	sc->hn_rx_ring_cnt = 0;
@@ -2821,11 +2821,11 @@
 
 	txr->hn_txdesc_cnt = HN_TX_DESC_CNT;
 	txr->hn_txdesc = malloc(sizeof(struct hn_txdesc) * txr->hn_txdesc_cnt,
-	    M_NETVSC, M_WAITOK | M_ZERO);
+	    M_DEVBUF, M_WAITOK | M_ZERO);
 #ifndef HN_USE_TXDESC_BUFRING
 	SLIST_INIT(&txr->hn_txlist);
 #else
-	txr->hn_txdesc_br = buf_ring_alloc(txr->hn_txdesc_cnt, M_NETVSC,
+	txr->hn_txdesc_br = buf_ring_alloc(txr->hn_txdesc_cnt, M_DEVBUF,
 	    M_WAITOK, &txr->hn_tx_lock);
 #endif
 
@@ -2843,7 +2843,7 @@
 		TASK_INIT(&txr->hn_txeof_task, 0, hn_xmit_txeof_taskfunc, txr);
 
 		br_depth = hn_get_txswq_depth(txr);
-		txr->hn_mbuf_br = buf_ring_alloc(br_depth, M_NETVSC,
+		txr->hn_mbuf_br = buf_ring_alloc(br_depth, M_DEVBUF,
 		    M_WAITOK, &txr->hn_tx_lock);
 	}
 
@@ -3026,14 +3026,14 @@
 		bus_dma_tag_destroy(txr->hn_tx_rndis_dtag);
 
 #ifdef HN_USE_TXDESC_BUFRING
-	buf_ring_free(txr->hn_txdesc_br, M_NETVSC);
+	buf_ring_free(txr->hn_txdesc_br, M_DEVBUF);
 #endif
 
-	free(txr->hn_txdesc, M_NETVSC);
+	free(txr->hn_txdesc, M_DEVBUF);
 	txr->hn_txdesc = NULL;
 
 	if (txr->hn_mbuf_br != NULL)
-		buf_ring_free(txr->hn_mbuf_br, M_NETVSC);
+		buf_ring_free(txr->hn_mbuf_br, M_DEVBUF);
 
 #ifndef HN_USE_TXDESC_BUFRING
 	mtx_destroy(&txr->hn_txlist_spin);
@@ -3065,7 +3065,7 @@
 	sc->hn_tx_ring_inuse = sc->hn_tx_ring_cnt;
 
 	sc->hn_tx_ring = malloc(sizeof(struct hn_tx_ring) * sc->hn_tx_ring_cnt,
-	    M_NETVSC, M_WAITOK | M_ZERO);
+	    M_DEVBUF, M_WAITOK | M_ZERO);
 
 	ctx = device_get_sysctl_ctx(sc->hn_dev);
 	child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->hn_dev));
@@ -3225,7 +3225,7 @@
 	for (i = 0; i < sc->hn_tx_ring_cnt; ++i)
 		hn_destroy_tx_ring(&sc->hn_tx_ring[i]);
 
-	free(sc->hn_tx_ring, M_NETVSC);
+	free(sc->hn_tx_ring, M_DEVBUF);
 	sc->hn_tx_ring = NULL;
 
 	sc->hn_tx_ring_cnt = 0;
@@ -4175,12 +4175,12 @@
 		} else if (ret == ENOBUFS) {
 			/* Handle large packet */
 			if (bufferlen > NETVSC_PACKET_SIZE) {
-				free(buffer, M_NETVSC);
+				free(buffer, M_DEVBUF);
 				buffer = NULL;
 			}
 
 			/* alloc new buffer */
-			buffer = malloc(bytes_rxed, M_NETVSC, M_NOWAIT);
+			buffer = malloc(bytes_rxed, M_DEVBUF, M_NOWAIT);
 			if (buffer == NULL) {
 				if_printf(rxr->hn_ifp,
 				    "hv_cb malloc buffer failed, len=%u\n",
@@ -4196,7 +4196,7 @@
 	} while (1);
 
 	if (bufferlen > NETVSC_PACKET_SIZE)
-		free(buffer, M_NETVSC);
+		free(buffer, M_DEVBUF);
 
 	hv_rf_channel_rollup(rxr, rxr->hn_txr);
 }