Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from David Miller:

 1) Fix some length checks during OGM processing in batman-adv, from
    Sven Eckelmann.

 2) Fix regression that caused netfilter conntrack sysctls to not be
    per-netns any more. From Florian Westphal.

 3) Use after free in netpoll, from Feng Sun.

 4) Guard destruction of pfifo_fast per-cpu qdisc stats with
    qdisc_is_percpu_stats(), from Davide Caratti. Similar bug is fixed
    in pfifo_fast_enqueue().

 5) Fix memory leak in mld_del_delrec(), from Eric Dumazet.

 6) Handle neigh events on internal ports correctly in nfp, from John
    Hurley.

 7) Clear SKB timestamp in NF flow table code so that it does not
    confuse fq scheduler. From Florian Westphal.

 8) taprio destroy can crash if it is invoked in a failure path of
    taprio_init(), because the list head isn't setup properly yet and
    the list del is unconditional. Perform the list add earlier to
    address this. From Vladimir Oltean.

 9) Make sure to reapply vlan filters on device up, in aquantia driver.
    From Dmitry Bogdanov.

10) sgiseeq driver releases DMA memory using free_page() instead of
    dma_free_attrs(). From Christophe JAILLET.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (58 commits)
  net: seeq: Fix the function used to release some memory in an error handling path
  enetc: Add missing call to 'pci_free_irq_vectors()' in probe and remove functions
  net: bcmgenet: use ethtool_op_get_ts_info()
  tc-testing: don't hardcode 'ip' in nsPlugin.py
  net: dsa: microchip: add KSZ8563 compatibility string
  dt-bindings: net: dsa: document additional Microchip KSZ8563 switch
  net: aquantia: fix out of memory condition on rx side
  net: aquantia: linkstate irq should be oneshot
  net: aquantia: reapply vlan filters on up
  net: aquantia: fix limit of vlan filters
  net: aquantia: fix removal of vlan 0
  net/sched: cbs: Set default link speed to 10 Mbps in cbs_set_port_rate
  taprio: Set default link speed to 10 Mbps in taprio_set_picos_per_byte
  taprio: Fix kernel panic in taprio_destroy
  net: dsa: microchip: fill regmap_config name
  rxrpc: Fix lack of conn cleanup when local endpoint is cleaned up [ver #2]
  net: stmmac: dwmac-rk: Don't fail if phy regulator is absent
  amd-xgbe: Fix error path in xgbe_mod_init()
  netfilter: nft_meta_bridge: Fix get NFT_META_BRI_IIFVPROTO in network byteorder
  mac80211: Correctly set noencrypt for PAE frames
  ...

1 files changed, 9 insertions, 23 deletions

diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c
index ae8cd8926456..c60c520fde7c 100644
--- a/net/rxrpc/rxkad.c
+++ b/net/rxrpc/rxkad.c
@@ -187,10 +187,8 @@ static int rxkad_secure_packet_encrypt(const struct rxrpc_call *call,
 	struct rxrpc_skb_priv *sp;
 	struct rxrpc_crypt iv;
 	struct scatterlist sg[16];
-	struct sk_buff *trailer;
 	unsigned int len;
 	u16 check;
-	int nsg;
 	int err;
 
 	sp = rxrpc_skb(skb);
@@ -214,15 +212,14 @@ static int rxkad_secure_packet_encrypt(const struct rxrpc_call *call,
 	crypto_skcipher_encrypt(req);
 
 	/* we want to encrypt the skbuff in-place */
-	nsg = skb_cow_data(skb, 0, &trailer);
-	err = -ENOMEM;
-	if (nsg < 0 || nsg > 16)
+	err = -EMSGSIZE;
+	if (skb_shinfo(skb)->nr_frags > 16)
 		goto out;
 
 	len = data_size + call->conn->size_align - 1;
 	len &= ~(call->conn->size_align - 1);
 
-	sg_init_table(sg, nsg);
+	sg_init_table(sg, ARRAY_SIZE(sg));
 	err = skb_to_sgvec(skb, sg, 0, len);
 	if (unlikely(err < 0))
 		goto out;
@@ -319,11 +316,10 @@ static int rxkad_verify_packet_1(struct rxrpc_call *call, struct sk_buff *skb,
 	struct rxkad_level1_hdr sechdr;
 	struct rxrpc_crypt iv;
 	struct scatterlist sg[16];
-	struct sk_buff *trailer;
 	bool aborted;
 	u32 data_size, buf;
 	u16 check;
-	int nsg, ret;
+	int ret;
 
 	_enter("");
 
@@ -336,11 +332,7 @@ static int rxkad_verify_packet_1(struct rxrpc_call *call, struct sk_buff *skb,
 	/* Decrypt the skbuff in-place.  TODO: We really want to decrypt
 	 * directly into the target buffer.
 	 */
-	nsg = skb_cow_data(skb, 0, &trailer);
-	if (nsg < 0 || nsg > 16)
-		goto nomem;
-
-	sg_init_table(sg, nsg);
+	sg_init_table(sg, ARRAY_SIZE(sg));
 	ret = skb_to_sgvec(skb, sg, offset, 8);
 	if (unlikely(ret < 0))
 		return ret;
@@ -388,10 +380,6 @@ protocol_error:
 	if (aborted)
 		rxrpc_send_abort_packet(call);
 	return -EPROTO;
-
-nomem:
-	_leave(" = -ENOMEM");
-	return -ENOMEM;
 }
 
 /*
@@ -406,7 +394,6 @@ static int rxkad_verify_packet_2(struct rxrpc_call *call, struct sk_buff *skb,
 	struct rxkad_level2_hdr sechdr;
 	struct rxrpc_crypt iv;
 	struct scatterlist _sg[4], *sg;
-	struct sk_buff *trailer;
 	bool aborted;
 	u32 data_size, buf;
 	u16 check;
@@ -423,12 +410,11 @@ static int rxkad_verify_packet_2(struct rxrpc_call *call, struct sk_buff *skb,
 	/* Decrypt the skbuff in-place.  TODO: We really want to decrypt
 	 * directly into the target buffer.
 	 */
-	nsg = skb_cow_data(skb, 0, &trailer);
-	if (nsg < 0)
-		goto nomem;
-
 	sg = _sg;
-	if (unlikely(nsg > 4)) {
+	nsg = skb_shinfo(skb)->nr_frags;
+	if (nsg <= 4) {
+		nsg = 4;
+	} else {
 		sg = kmalloc_array(nsg, sizeof(*sg), GFP_NOIO);
 		if (!sg)
 			goto nomem;