diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c
index 0d1c3ec8cb40734f96529dffadffc28d686c22ac..538883c6b83624a02e1fc796a2d6a0dd945d975d 100644
--- a/drivers/i2c/busses/i2c-ismt.c
+++ b/drivers/i2c/busses/i2c-ismt.c
@@ -498,6 +498,9 @@ static int ismt_access(struct i2c_adapter *adap, u16 addr,
 		if (read_write == I2C_SMBUS_WRITE) {
 			/* Block Write */
 			dev_dbg(dev, "I2C_SMBUS_BLOCK_DATA:  WRITE\n");
+			if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX)
+				return -EINVAL;
+
 			dma_size = data->block[0] + 1;
 			dma_direction = DMA_TO_DEVICE;
 			desc->wr_len_cmd = dma_size;
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 51e4e92d95a0d314c600771f06cb938e6731091b..0bbeb61ec3a38e417698eb47eb9906ed30505d7b 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -712,8 +712,8 @@ static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 		struct rndis_query	*get;
 		struct rndis_query_c	*get_c;
 	} u;
-	int ret, buflen;
-	int resplen, respoffs, copylen;
+	int ret;
+	size_t buflen, resplen, respoffs, copylen;
 
 	buflen = *len + sizeof(*u.get);
 	if (buflen < CONTROL_BUFFER_SIZE)
@@ -748,22 +748,15 @@ static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 
 		if (respoffs > buflen) {
 			/* Device returned data offset outside buffer, error. */
-			netdev_dbg(dev->net, "%s(%s): received invalid "
-				"data offset: %d > %d\n", __func__,
-				oid_to_string(oid), respoffs, buflen);
+			netdev_dbg(dev->net,
+				   "%s(%s): received invalid data offset: %zu > %zu\n",
+				   __func__, oid_to_string(oid), respoffs, buflen);
 
 			ret = -EINVAL;
 			goto exit_unlock;
 		}
 
-		if ((resplen + respoffs) > buflen) {
-			/* Device would have returned more data if buffer would
-			 * have been big enough. Copy just the bits that we got.
-			 */
-			copylen = buflen - respoffs;
-		} else {
-			copylen = resplen;
-		}
+		copylen = min(resplen, buflen - respoffs);
 
 		if (copylen > *len)
 			copylen = *len;
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 39e319d04bb87b5ee98d5ec0935c13f76ace3f02..0b1dcbcfd9ba4b5c9b8e90be8f896b380f2cc9af 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1006,8 +1006,12 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
 			unsigned long cl = cops->find(parent, classid);
 
 			if (cl) {
-				err = cops->graft(parent, cl, new, &old,
-						  extack);
+				if (new && new->ops == &noqueue_qdisc_ops) {
+					NL_SET_ERR_MSG(extack, "Cannot assign noqueue to a class");
+					err = -EINVAL;
+				} else {
+					err = cops->graft(parent, cl, new, &old, extack);
+				}
 			} else {
 				NL_SET_ERR_MSG(extack, "Specified class not found");
 				err = -ENOENT;
diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index 91bd5c8393036e9c23fb161e150a98b06387ad0a..a3084a12239e1355662c5e9e02d7459142b77ed9 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -394,10 +394,13 @@ static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
 				result = tcf_classify(skb, fl, &res, true);
 				if (result < 0)
 					continue;
+				if (result == TC_ACT_SHOT)
+					goto done;
+
 				flow = (struct atm_flow_data *)res.class;
 				if (!flow)
 					flow = lookup_flow(sch, res.classid);
-				goto done;
+				goto drop;
 			}
 		}
 		flow = NULL;