1 files changed, 14 insertions, 9 deletions

diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 4abf660c7baf..811d02b4c4f7 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -376,6 +376,7 @@ static void nfnetlink_rcv_batch(struct sk_buff *skb, struct nlmsghdr *nlh,
 	const struct nfnetlink_subsystem *ss;
 	const struct nfnl_callback *nc;
 	struct netlink_ext_ack extack;
+	struct nlmsghdr *onlh = nlh;
 	LIST_HEAD(err_list);
 	u32 status;
 	int err;
@@ -386,6 +387,7 @@ replay:
 	status = 0;
 replay_abort:
 	skb = netlink_skb_clone(oskb, GFP_KERNEL);
+	nlh = onlh;
 	if (!skb)
 		return netlink_ack(oskb, nlh, -ENOMEM, NULL);
 
@@ -402,33 +404,35 @@ replay_abort:
 		{
 			nfnl_unlock(subsys_id);
 			netlink_ack(oskb, nlh, -EOPNOTSUPP, NULL);
-			return kfree_skb(skb);
+			return consume_skb(skb);
 		}
 	}
 
 	if (!ss->valid_genid || !ss->commit || !ss->abort) {
 		nfnl_unlock(subsys_id);
 		netlink_ack(oskb, nlh, -EOPNOTSUPP, NULL);
-		return kfree_skb(skb);
+		return consume_skb(skb);
 	}
 
 	if (!try_module_get(ss->owner)) {
 		nfnl_unlock(subsys_id);
 		netlink_ack(oskb, nlh, -EOPNOTSUPP, NULL);
-		return kfree_skb(skb);
+		return consume_skb(skb);
 	}
 
 	if (!ss->valid_genid(net, genid)) {
 		module_put(ss->owner);
 		nfnl_unlock(subsys_id);
 		netlink_ack(oskb, nlh, -ERESTART, NULL);
-		return kfree_skb(skb);
+		return consume_skb(skb);
 	}
 
 	nfnl_unlock(subsys_id);
 
-	if (nlh->nlmsg_flags & NLM_F_ACK)
+	if (nlh->nlmsg_flags & NLM_F_ACK) {
+		memset(&extack, 0, sizeof(extack));
 		nfnl_err_add(&err_list, nlh, 0, &extack);
+	}
 
 	while (skb->len >= nlmsg_total_size(0)) {
 		int msglen, type;
@@ -515,7 +519,7 @@ replay_abort:
 			err = nla_parse_deprecated(cda,
 						   ss->cb[cb_id].attr_count,
 						   attr, attrlen,
-						   ss->cb[cb_id].policy, NULL);
+						   ss->cb[cb_id].policy, &extack);
 			if (err < 0)
 				goto ack;
 
@@ -565,7 +569,7 @@ done:
 	if (status & NFNL_BATCH_REPLAY) {
 		ss->abort(net, oskb, NFNL_ABORT_AUTOLOAD);
 		nfnl_err_reset(&err_list);
-		kfree_skb(skb);
+		consume_skb(skb);
 		module_put(ss->owner);
 		goto replay;
 	} else if (status == NFNL_BATCH_DONE) {
@@ -577,6 +581,7 @@ done:
 			ss->abort(net, oskb, NFNL_ABORT_NONE);
 			netlink_ack(oskb, nlmsg_hdr(oskb), err, NULL);
 		} else if (nlh->nlmsg_flags & NLM_F_ACK) {
+			memset(&extack, 0, sizeof(extack));
 			nfnl_err_add(&err_list, nlh, 0, &extack);
 		}
 	} else {
@@ -590,7 +595,7 @@ done:
 		err = ss->abort(net, oskb, abort_action);
 		if (err == -EAGAIN) {
 			nfnl_err_reset(&err_list);
-			kfree_skb(skb);
+			consume_skb(skb);
 			module_put(ss->owner);
 			status |= NFNL_BATCH_FAILURE;
 			goto replay_abort;
@@ -598,7 +603,7 @@ done:
 	}
 
 	nfnl_err_deliver(&err_list, oskb);
-	kfree_skb(skb);
+	consume_skb(skb);
 	module_put(ss->owner);
 }