Merge tag 'net-6.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from bpf.

  Relatively calm week, likely due to public holiday in most places. No
  known outstanding regressions.

  Current release - regressions:

   - rxrpc: fix wrong alignmask in __page_frag_alloc_align()

   - eth: e1000e: change usleep_range to udelay in PHY mdic access

  Previous releases - regressions:

   - gro: fix udp bad offset in socket lookup

   - bpf: fix incorrect runtime stat for arm64

   - tipc: fix UAF in error path

   - netfs: fix a potential infinite loop in extract_user_to_sg()

   - eth: ice: ensure the copied buf is NUL terminated

   - eth: qeth: fix kernel panic after setting hsuid

  Previous releases - always broken:

   - bpf:
       - verifier: prevent userspace memory access
       - xdp: use flags field to disambiguate broadcast redirect

   - bridge: fix multicast-to-unicast with fraglist GSO

   - mptcp: ensure snd_nxt is properly initialized on connect

   - nsh: fix outer header access in nsh_gso_segment().

   - eth: bcmgenet: fix racing registers access

   - eth: vxlan: fix stats counters.

  Misc:

   - a bunch of MAINTAINERS file updates"

* tag 'net-6.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (45 commits)
  MAINTAINERS: mark MYRICOM MYRI-10G as Orphan
  MAINTAINERS: remove Ariel Elior
  net: gro: add flush check in udp_gro_receive_segment
  net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb
  ipv4: Fix uninit-value access in __ip_make_skb()
  s390/qeth: Fix kernel panic after setting hsuid
  vxlan: Pull inner IP header in vxlan_rcv().
  tipc: fix a possible memleak in tipc_buf_append
  tipc: fix UAF in error path
  rxrpc: Clients must accept conn from any address
  net: core: reject skb_copy(_expand) for fraglist GSO skbs
  net: bridge: fix multicast-to-unicast with fraglist GSO
  mptcp: ensure snd_nxt is properly initialized on connect
  e1000e: change usleep_range to udelay in PHY mdic access
  net: dsa: mv88e6xxx: Fix number of databases for 88E6141 / 88E6341
  cxgb4: Properly lock TX queue for the selftest.
  rxrpc: Fix using alignmask being zero for __page_frag_alloc_align()
  vxlan: Add missing VNI filter counter update in arp_reduce().
  vxlan: Fix racy device stats updates.
  net: qede: use return from qede_parse_actions()
  ...

22 files changed, 110 insertions, 51 deletions

diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index f00158234505..9404dd551dfd 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -478,6 +478,8 @@ static struct sk_buff *vlan_gro_receive(struct list_head *head,
 	if (unlikely(!vhdr))
 		goto out;
 
+	NAPI_GRO_CB(skb)->network_offsets[NAPI_GRO_CB(skb)->encap_mark] = hlen;
+
 	type = vhdr->h_vlan_encapsulated_proto;
 
 	ptype = gro_find_receive_by_type(type);
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index 7431f89e897b..d7c35f55bd69 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -266,7 +266,7 @@ static void maybe_deliver_addr(struct net_bridge_port *p, struct sk_buff *skb,
 	if (skb->dev == p->dev && ether_addr_equal(src, addr))
 		return;
 
-	skb = skb_copy(skb, GFP_ATOMIC);
+	skb = pskb_copy(skb, GFP_ATOMIC);
 	if (!skb) {
 		DEV_STATS_INC(dev, tx_dropped);
 		return;
diff --git a/net/core/filter.c b/net/core/filter.c
index 8adf95765cdd..ae5254f712c9 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -4360,10 +4360,12 @@ static __always_inline int __xdp_do_redirect_frame(struct bpf_redirect_info *ri,
 	enum bpf_map_type map_type = ri->map_type;
 	void *fwd = ri->tgt_value;
 	u32 map_id = ri->map_id;
+	u32 flags = ri->flags;
 	struct bpf_map *map;
 	int err;
 
 	ri->map_id = 0; /* Valid map id idr range: [1,INT_MAX[ */
+	ri->flags = 0;
 	ri->map_type = BPF_MAP_TYPE_UNSPEC;
 
 	if (unlikely(!xdpf)) {
@@ -4375,11 +4377,20 @@ static __always_inline int __xdp_do_redirect_frame(struct bpf_redirect_info *ri,
 	case BPF_MAP_TYPE_DEVMAP:
 		fallthrough;
 	case BPF_MAP_TYPE_DEVMAP_HASH:
-		map = READ_ONCE(ri->map);
-		if (unlikely(map)) {
+		if (unlikely(flags & BPF_F_BROADCAST)) {
+			map = READ_ONCE(ri->map);
+
+			/* The map pointer is cleared when the map is being torn
+			 * down by bpf_clear_redirect_map()
+			 */
+			if (unlikely(!map)) {
+				err = -ENOENT;
+				break;
+			}
+
 			WRITE_ONCE(ri->map, NULL);
 			err = dev_map_enqueue_multi(xdpf, dev, map,
-						    ri->flags & BPF_F_EXCLUDE_INGRESS);
+						    flags & BPF_F_EXCLUDE_INGRESS);
 		} else {
 			err = dev_map_enqueue(fwd, xdpf, dev);
 		}
@@ -4442,9 +4453,9 @@ EXPORT_SYMBOL_GPL(xdp_do_redirect_frame);
 static int xdp_do_generic_redirect_map(struct net_device *dev,
 				       struct sk_buff *skb,
 				       struct xdp_buff *xdp,
-				       struct bpf_prog *xdp_prog,
-				       void *fwd,
-				       enum bpf_map_type map_type, u32 map_id)
+				       struct bpf_prog *xdp_prog, void *fwd,
+				       enum bpf_map_type map_type, u32 map_id,
+				       u32 flags)
 {
 	struct bpf_redirect_info *ri = this_cpu_ptr(&bpf_redirect_info);
 	struct bpf_map *map;
@@ -4454,11 +4465,20 @@ static int xdp_do_generic_redirect_map(struct net_device *dev,
 	case BPF_MAP_TYPE_DEVMAP:
 		fallthrough;
 	case BPF_MAP_TYPE_DEVMAP_HASH:
-		map = READ_ONCE(ri->map);
-		if (unlikely(map)) {
+		if (unlikely(flags & BPF_F_BROADCAST)) {
+			map = READ_ONCE(ri->map);
+
+			/* The map pointer is cleared when the map is being torn
+			 * down by bpf_clear_redirect_map()
+			 */
+			if (unlikely(!map)) {
+				err = -ENOENT;
+				break;
+			}
+
 			WRITE_ONCE(ri->map, NULL);
 			err = dev_map_redirect_multi(dev, skb, xdp_prog, map,
-						     ri->flags & BPF_F_EXCLUDE_INGRESS);
+						     flags & BPF_F_EXCLUDE_INGRESS);
 		} else {
 			err = dev_map_generic_redirect(fwd, skb, xdp_prog);
 		}
@@ -4495,9 +4515,11 @@ int xdp_do_generic_redirect(struct net_device *dev, struct sk_buff *skb,
 	enum bpf_map_type map_type = ri->map_type;
 	void *fwd = ri->tgt_value;
 	u32 map_id = ri->map_id;
+	u32 flags = ri->flags;
 	int err;
 
 	ri->map_id = 0; /* Valid map id idr range: [1,INT_MAX[ */
+	ri->flags = 0;
 	ri->map_type = BPF_MAP_TYPE_UNSPEC;
 
 	if (map_type == BPF_MAP_TYPE_UNSPEC && map_id == INT_MAX) {
@@ -4517,7 +4539,7 @@ int xdp_do_generic_redirect(struct net_device *dev, struct sk_buff *skb,
 		return 0;
 	}
 
-	return xdp_do_generic_redirect_map(dev, skb, xdp, xdp_prog, fwd, map_type, map_id);
+	return xdp_do_generic_redirect_map(dev, skb, xdp, xdp_prog, fwd, map_type, map_id, flags);
 err:
 	_trace_xdp_redirect_err(dev, xdp_prog, ri->tgt_index, err);
 	return err;
diff --git a/net/core/gro.c b/net/core/gro.c
index 83f35d99a682..c7901253a1a8 100644
--- a/net/core/gro.c
+++ b/net/core/gro.c
@@ -371,6 +371,7 @@ static inline void skb_gro_reset_offset(struct sk_buff *skb, u32 nhoff)
 	const skb_frag_t *frag0;
 	unsigned int headlen;
 
+	NAPI_GRO_CB(skb)->network_offset = 0;
 	NAPI_GRO_CB(skb)->data_offset = 0;
 	headlen = skb_headlen(skb);
 	NAPI_GRO_CB(skb)->frag0 = skb->data;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b99127712e67..4096e679f61c 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2123,11 +2123,17 @@ static inline int skb_alloc_rx_flag(const struct sk_buff *skb)
 
 struct sk_buff *skb_copy(const struct sk_buff *skb, gfp_t gfp_mask)
 {
-	int headerlen = skb_headroom(skb);
-	unsigned int size = skb_end_offset(skb) + skb->data_len;
-	struct sk_buff *n = __alloc_skb(size, gfp_mask,
-					skb_alloc_rx_flag(skb), NUMA_NO_NODE);
+	struct sk_buff *n;
+	unsigned int size;
+	int headerlen;
+
+	if (WARN_ON_ONCE(skb_shinfo(skb)->gso_type & SKB_GSO_FRAGLIST))
+		return NULL;
 
+	headerlen = skb_headroom(skb);
+	size = skb_end_offset(skb) + skb->data_len;
+	n = __alloc_skb(size, gfp_mask,
+			skb_alloc_rx_flag(skb), NUMA_NO_NODE);
 	if (!n)
 		return NULL;
 
@@ -2455,12 +2461,17 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
 	/*
 	 *	Allocate the copy buffer
 	 */
-	struct sk_buff *n = __alloc_skb(newheadroom + skb->len + newtailroom,
-					gfp_mask, skb_alloc_rx_flag(skb),
-					NUMA_NO_NODE);
-	int oldheadroom = skb_headroom(skb);
 	int head_copy_len, head_copy_off;
+	struct sk_buff *n;
+	int oldheadroom;
+
+	if (WARN_ON_ONCE(skb_shinfo(skb)->gso_type & SKB_GSO_FRAGLIST))
+		return NULL;
 
+	oldheadroom = skb_headroom(skb);
+	n = __alloc_skb(newheadroom + skb->len + newtailroom,
+			gfp_mask, skb_alloc_rx_flag(skb),
+			NUMA_NO_NODE);
 	if (!n)
 		return NULL;
 
diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index 4d75ef9d24bf..fd20aae30be2 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -1226,11 +1226,8 @@ static void sk_psock_verdict_data_ready(struct sock *sk)
 
 		rcu_read_lock();
 		psock = sk_psock(sk);
-		if (psock) {
-			read_lock_bh(&sk->sk_callback_lock);
+		if (psock)
 			sk_psock_data_ready(sk, psock);
-			read_unlock_bh(&sk->sk_callback_lock);
-		}
 		rcu_read_unlock();
 	}
 }
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 55bd72997b31..fafb123f798b 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1572,6 +1572,7 @@ struct sk_buff *inet_gro_receive(struct list_head *head, struct sk_buff *skb)
 	/* The above will be needed by the transport layer if there is one
 	 * immediately following this IP hdr.
 	 */
+	NAPI_GRO_CB(skb)->inner_network_offset = off;
 
 	/* Note : No need to call skb_gro_postpull_rcsum() here,
 	 * as we already checked checksum over ipv4 header was 0
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 1fe794967211..39229fd0601a 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1473,7 +1473,7 @@ struct sk_buff *__ip_make_skb(struct sock *sk,
 		 * by icmp_hdr(skb)->type.
 		 */
 		if (sk->sk_type == SOCK_RAW &&
-		    !inet_test_bit(HDRINCL, sk))
+		    !(fl4->flowi4_flags & FLOWI_FLAG_KNOWN_NH))
 			icmp_type = fl4->fl4_icmp_type;
 		else
 			icmp_type = icmp_hdr(skb)->type;
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index dcb11f22cbf2..4cb43401e0e0 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -612,6 +612,9 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 			    (hdrincl ? FLOWI_FLAG_KNOWN_NH : 0),
 			   daddr, saddr, 0, 0, sk->sk_uid);
 
+	fl4.fl4_icmp_type = 0;
+	fl4.fl4_icmp_code = 0;
+
 	if (!hdrincl) {
 		rfv.msg = msg;
 		rfv.hlen = 0;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 420905be5f30..b32cf2eeeb41 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -532,7 +532,8 @@ static inline struct sock *__udp4_lib_lookup_skb(struct sk_buff *skb,
 struct sock *udp4_lib_lookup_skb(const struct sk_buff *skb,
 				 __be16 sport, __be16 dport)
 {
-	const struct iphdr *iph = ip_hdr(skb);
+	const u16 offset = NAPI_GRO_CB(skb)->network_offsets[skb->encapsulation];
+	const struct iphdr *iph = (struct iphdr *)(skb->data + offset);
 	struct net *net = dev_net(skb->dev);
 	int iif, sdif;
 
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 3498dd1d0694..8721fe5beca2 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -471,6 +471,7 @@ static struct sk_buff *udp_gro_receive_segment(struct list_head *head,
 	struct sk_buff *p;
 	unsigned int ulen;
 	int ret = 0;
+	int flush;
 
 	/* requires non zero csum, for symmetry with GSO */
 	if (!uh->check) {
@@ -504,13 +505,22 @@ static struct sk_buff *udp_gro_receive_segment(struct list_head *head,
 			return p;
 		}
 
+		flush = NAPI_GRO_CB(p)->flush;
+
+		if (NAPI_GRO_CB(p)->flush_id != 1 ||
+		    NAPI_GRO_CB(p)->count != 1 ||
+		    !NAPI_GRO_CB(p)->is_atomic)
+			flush |= NAPI_GRO_CB(p)->flush_id;
+		else
+			NAPI_GRO_CB(p)->is_atomic = false;
+
 		/* Terminate the flow on len mismatch or if it grow "too much".
 		 * Under small packet flood GRO count could elsewhere grow a lot
 		 * leading to excessive truesize values.
 		 * On len mismatch merge the first packet shorter than gso_size,
 		 * otherwise complete the GRO packet.
 		 */
-		if (ulen > ntohs(uh2->len)) {
+		if (ulen > ntohs(uh2->len) || flush) {
 			pp = p;
 		} else {
 			if (NAPI_GRO_CB(skb)->is_flist) {
@@ -718,7 +728,8 @@ EXPORT_SYMBOL(udp_gro_complete);
 
 INDIRECT_CALLABLE_SCOPE int udp4_gro_complete(struct sk_buff *skb, int nhoff)
 {
-	const struct iphdr *iph = ip_hdr(skb);
+	const u16 offset = NAPI_GRO_CB(skb)->network_offsets[skb->encapsulation];
+	const struct iphdr *iph = (struct iphdr *)(skb->data + offset);
 	struct udphdr *uh = (struct udphdr *)(skb->data + nhoff);
 
 	/* do fraglist only if there is no outer UDP encap (or we already processed it) */
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index b41e35af69ea..c8b909a9904f 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -237,6 +237,7 @@ INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
 		goto out;
 
 	skb_set_network_header(skb, off);
+	NAPI_GRO_CB(skb)->inner_network_offset = off;
 
 	flush += ntohs(iph->payload_len) != skb->len - hlen;
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 1a4cccdd40c9..8f7aa8bac1e7 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -272,7 +272,8 @@ static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb,
 struct sock *udp6_lib_lookup_skb(const struct sk_buff *skb,
 				 __be16 sport, __be16 dport)
 {
-	const struct ipv6hdr *iph = ipv6_hdr(skb);
+	const u16 offset = NAPI_GRO_CB(skb)->network_offsets[skb->encapsulation];
+	const struct ipv6hdr *iph = (struct ipv6hdr *)(skb->data + offset);
 	struct net *net = dev_net(skb->dev);
 	int iif, sdif;
 
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index bbd347de00b4..b41152dd4246 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -164,7 +164,8 @@ flush:
 
 INDIRECT_CALLABLE_SCOPE int udp6_gro_complete(struct sk_buff *skb, int nhoff)
 {
-	const struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+	const u16 offset = NAPI_GRO_CB(skb)->network_offsets[skb->encapsulation];
+	const struct ipv6hdr *ipv6h = (struct ipv6hdr *)(skb->data + offset);
 	struct udphdr *uh = (struct udphdr *)(skb->data + nhoff);
 
 	/* do fraglist only if there is no outer UDP encap (or we already processed it) */
diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
index 39e487ccc468..8ba00ad433c2 100644
--- a/net/l2tp/l2tp_eth.c
+++ b/net/l2tp/l2tp_eth.c
@@ -127,6 +127,9 @@ static void l2tp_eth_dev_recv(struct l2tp_session *session, struct sk_buff *skb,
 	/* checksums verified by L2TP */
 	skb->ip_summed = CHECKSUM_NONE;
 
+	/* drop outer flow-hash */
+	skb_clear_hash(skb);
+
 	skb_dst_drop(skb);
 	nf_reset_ct(skb);
 
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 7e74b812e366..965eb69dc5de 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -3723,6 +3723,9 @@ static int mptcp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 		MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_TOKENFALLBACKINIT);
 		mptcp_subflow_early_fallback(msk, subflow);
 	}
+
+	WRITE_ONCE(msk->write_seq, subflow->idsn);
+	WRITE_ONCE(msk->snd_nxt, subflow->idsn);
 	if (likely(!__mptcp_check_fallback(msk)))
 		MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPCAPABLEACTIVE);
 
diff --git a/net/nsh/nsh.c b/net/nsh/nsh.c
index f4a38bd6a7e0..bfb7758063f3 100644
--- a/net/nsh/nsh.c
+++ b/net/nsh/nsh.c
@@ -77,13 +77,15 @@ EXPORT_SYMBOL_GPL(nsh_pop);
 static struct sk_buff *nsh_gso_segment(struct sk_buff *skb,
 				       netdev_features_t features)
 {
+	unsigned int outer_hlen, mac_len, nsh_len;
 	struct sk_buff *segs = ERR_PTR(-EINVAL);
 	u16 mac_offset = skb->mac_header;
-	unsigned int nsh_len, mac_len;
-	__be16 proto;
+	__be16 outer_proto, proto;
 
 	skb_reset_network_header(skb);
 
+	outer_proto = skb->protocol;
+	outer_hlen = skb_mac_header_len(skb);
 	mac_len = skb->mac_len;
 
 	if (unlikely(!pskb_may_pull(skb, NSH_BASE_HDR_LEN)))
@@ -113,10 +115,10 @@ static struct sk_buff *nsh_gso_segment(struct sk_buff *skb,
 	}
 
 	for (skb = segs; skb; skb = skb->next) {
-		skb->protocol = htons(ETH_P_NSH);
-		__skb_push(skb, nsh_len);
-		skb->mac_header = mac_offset;
-		skb->network_header = skb->mac_header + mac_len;
+		skb->protocol = outer_proto;
+		__skb_push(skb, nsh_len + outer_hlen);
+		skb_reset_mac_header(skb);
+		skb_set_network_header(skb, outer_hlen);
 		skb->mac_len = mac_len;
 	}
 
diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c
index 0af4642aeec4..1539d315afe7 100644
--- a/net/rxrpc/conn_object.c
+++ b/net/rxrpc/conn_object.c
@@ -119,18 +119,13 @@ struct rxrpc_connection *rxrpc_find_client_connection_rcu(struct rxrpc_local *lo
 	switch (srx->transport.family) {
 	case AF_INET:
 		if (peer->srx.transport.sin.sin_port !=
-		    srx->transport.sin.sin_port ||
-		    peer->srx.transport.sin.sin_addr.s_addr !=
-		    srx->transport.sin.sin_addr.s_addr)
+		    srx->transport.sin.sin_port)
 			goto not_found;
 		break;
 #ifdef CONFIG_AF_RXRPC_IPV6
 	case AF_INET6:
 		if (peer->srx.transport.sin6.sin6_port !=
-		    srx->transport.sin6.sin6_port ||
-		    memcmp(&peer->srx.transport.sin6.sin6_addr,
-			   &srx->transport.sin6.sin6_addr,
-			   sizeof(struct in6_addr)) != 0)
+		    srx->transport.sin6.sin6_port)
 			goto not_found;
 		break;
 #endif
diff --git a/net/rxrpc/insecure.c b/net/rxrpc/insecure.c
index f2701068ed9e..6716c021a532 100644
--- a/net/rxrpc/insecure.c
+++ b/net/rxrpc/insecure.c
@@ -19,7 +19,7 @@ static int none_init_connection_security(struct rxrpc_connection *conn,
  */
 static struct rxrpc_txbuf *none_alloc_txbuf(struct rxrpc_call *call, size_t remain, gfp_t gfp)
 {
-	return rxrpc_alloc_data_txbuf(call, min_t(size_t, remain, RXRPC_JUMBO_DATALEN), 0, gfp);
+	return rxrpc_alloc_data_txbuf(call, min_t(size_t, remain, RXRPC_JUMBO_DATALEN), 1, gfp);
 }
 
 static int none_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb)
diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c
index f1a68270862d..48a1475e6b06 100644
--- a/net/rxrpc/rxkad.c
+++ b/net/rxrpc/rxkad.c
@@ -155,7 +155,7 @@ static struct rxrpc_txbuf *rxkad_alloc_txbuf(struct rxrpc_call *call, size_t rem
 	switch (call->conn->security_level) {
 	default:
 		space = min_t(size_t, remain, RXRPC_JUMBO_DATALEN);
-		return rxrpc_alloc_data_txbuf(call, space, 0, gfp);
+		return rxrpc_alloc_data_txbuf(call, space, 1, gfp);
 	case RXRPC_SECURITY_AUTH:
 		shdr = sizeof(struct rxkad_level1_hdr);
 		break;
diff --git a/net/rxrpc/txbuf.c b/net/rxrpc/txbuf.c
index e0679658d9de..c3913d8a50d3 100644
--- a/net/rxrpc/txbuf.c
+++ b/net/rxrpc/txbuf.c
@@ -21,20 +21,20 @@ struct rxrpc_txbuf *rxrpc_alloc_data_txbuf(struct rxrpc_call *call, size_t data_
 {
 	struct rxrpc_wire_header *whdr;
 	struct rxrpc_txbuf *txb;
-	size_t total, hoff = 0;
+	size_t total, hoff;
 	void *buf;
 
 	txb = kmalloc(sizeof(*txb), gfp);
 	if (!txb)
 		return NULL;
 
-	if (data_align)
-		hoff = round_up(sizeof(*whdr), data_align) - sizeof(*whdr);
+	hoff = round_up(sizeof(*whdr), data_align) - sizeof(*whdr);
 	total = hoff + sizeof(*whdr) + data_size;
 
+	data_align = umax(data_align, L1_CACHE_BYTES);
 	mutex_lock(&call->conn->tx_data_alloc_lock);
-	buf = __page_frag_alloc_align(&call->conn->tx_data_alloc, total, gfp,
-				      ~(data_align - 1) & ~(L1_CACHE_BYTES - 1));
+	buf = page_frag_alloc_align(&call->conn->tx_data_alloc, total, gfp,
+				    data_align);
 	mutex_unlock(&call->conn->tx_data_alloc_lock);
 	if (!buf) {
 		kfree(txb);
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index 5c9fd4791c4b..76284fc538eb 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -142,9 +142,9 @@ int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
 	if (fragid == FIRST_FRAGMENT) {
 		if (unlikely(head))
 			goto err;
-		*buf = NULL;
 		if (skb_has_frag_list(frag) && __skb_linearize(frag))
 			goto err;
+		*buf = NULL;
 		frag = skb_unshare(frag, GFP_ATOMIC);
 		if (unlikely(!frag))
 			goto err;
@@ -156,6 +156,11 @@ int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
 	if (!head)
 		goto err;
 
+	/* Either the input skb ownership is transferred to headskb
+	 * or the input skb is freed, clear the reference to avoid
+	 * bad access on error path.
+	 */
+	*buf = NULL;
 	if (skb_try_coalesce(head, frag, &headstolen, &delta)) {
 		kfree_skb_partial(frag, headstolen);
 	} else {
@@ -179,7 +184,6 @@ int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
 		*headbuf = NULL;
 		return 1;
 	}
-	*buf = NULL;
 	return 0;
 err:
 	kfree_skb(*buf);