Index: sys/dev/aacraid/aacraid.c
===================================================================
--- sys/dev/aacraid/aacraid.c
+++ sys/dev/aacraid/aacraid.c
@@ -228,6 +228,22 @@
 SYSCTL_NODE(_hw, OID_AUTO, aacraid, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
     "AACRAID driver parameters");
 
+static void
+aacraid_setup_sysctl(struct aac_softc *sc)
+{
+	struct sysctl_ctx_list	*sysctl_ctx;
+	struct sysctl_oid	*sysctl_tree;
+
+	sysctl_ctx = device_get_sysctl_ctx(sc->aac_dev);
+	sysctl_tree = device_get_sysctl_tree(sc->aac_dev);
+	if (sysctl_ctx == NULL || sysctl_tree == NULL)
+		return;
+
+	SYSCTL_ADD_ULONG(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
+	    OID_AUTO, "dma_load_fail", CTLFLAG_RD,
+	    &sc->dma_load_fail, "DMA load buffer failures");
+}
+
 /*
  * Device Interface
  */
@@ -339,6 +355,8 @@
 	/* poke the bus to actually attach the child devices */
 	bus_generic_attach(sc->aac_dev);
 
+	aacraid_setup_sysctl(sc);
+
 	/* mark the controller up */
 	sc->aac_state &= ~AAC_STATE_SUSPEND;
 
@@ -1298,6 +1316,18 @@
 	fwprintf(sc, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "nseg %d", nseg);
 	mtx_assert(&sc->aac_io_lock, MA_OWNED);
 
+	if (error != 0) {
+		if (sc->dma_load_fail == 0)
+			device_printf(sc->aac_dev,
+			    "ERROR: failed to load buffer to DMA area, error %d\n",
+			    error);
+		sc->dma_load_fail++;
+		/*
+		 * Let the command run (and fail) to be able to clean up and
+		 * wake up waiters in the interrupt handler.
+		 */
+	}
+
 	if ((sc->flags & AAC_FLAGS_SYNC_MODE) && sc->aac_sync_cm)
 		return;
 
Index: sys/dev/aacraid/aacraid_var.h
===================================================================
--- sys/dev/aacraid/aacraid_var.h
+++ sys/dev/aacraid/aacraid_var.h
@@ -468,6 +468,8 @@
 	u_int32_t	DebugHeaderSize;	/* Size of debug header */
 	u_int32_t	FwDebugFlags;		/* FW Debug Flags */
 	u_int32_t	FwDebugBufferSize;	/* FW Debug Buffer size */	
+
+	unsigned long		dma_load_fail;	/* DMA load failure counter */
 };
 
 /*