Merge tag 'net-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from BPF, netfilter, bluetooth and CAN.

  Current release - regressions:

   - eth: r8169: multiple fixes for PCIe ASPM-related problems

   - vrf: fix RCU lockdep splat in output path

  Previous releases - regressions:

   - gso: fall back to SW segmenting with GSO_UDP_L4 dodgy bit set

   - dsa: mv88e6xxx: do a final check before timing out when polling

   - nf_tables: fix sleep in atomic in nft_chain_validate

  Previous releases - always broken:

   - sched: fix undoing tcf_bind_filter() in multiple classifiers

   - bpf, arm64: fix BTI type used for freplace attached functions

   - can: gs_usb: fix time stamp counter initialization

   - nft_set_pipapo: fix improper element removal (leading to UAF)

  Misc:

   - net: support STP on bridge in non-root netns, STP prevents packet
     loops so not supporting it results in freezing systems of
     unsuspecting users, and in turn very upset noises being made

   - fix kdoc warnings

   - annotate various bits of TCP state to prevent data races"

* tag 'net-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (95 commits)
  net: phy: prevent stale pointer dereference in phy_init()
  tcp: annotate data-races around fastopenq.max_qlen
  tcp: annotate data-races around icsk->icsk_user_timeout
  tcp: annotate data-races around tp->notsent_lowat
  tcp: annotate data-races around rskq_defer_accept
  tcp: annotate data-races around tp->linger2
  tcp: annotate data-races around icsk->icsk_syn_retries
  tcp: annotate data-races around tp->keepalive_probes
  tcp: annotate data-races around tp->keepalive_intvl
  tcp: annotate data-races around tp->keepalive_time
  tcp: annotate data-races around tp->tsoffset
  tcp: annotate data-races around tp->tcp_tx_delay
  Bluetooth: MGMT: Use correct address for memcpy()
  Bluetooth: btusb: Fix bluetooth on Intel Macbook 2014
  Bluetooth: SCO: fix sco_conn related locking and validity issues
  Bluetooth: hci_conn: return ERR_PTR instead of NULL when there is no link
  Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
  Bluetooth: coredump: fix building with coredump disabled
  Bluetooth: ISO: fix iso_conn related locking and validity issues
  Bluetooth: hci_event: call disconnect callback before deleting conn
  ...

1 files changed, 11 insertions, 7 deletions

diff --git a/net/llc/llc_sap.c b/net/llc/llc_sap.c
index 6805ce43a055..116c0e479183 100644
--- a/net/llc/llc_sap.c
+++ b/net/llc/llc_sap.c
@@ -294,25 +294,29 @@ static void llc_sap_rcv(struct llc_sap *sap, struct sk_buff *skb,
 
 static inline bool llc_dgram_match(const struct llc_sap *sap,
 				   const struct llc_addr *laddr,
-				   const struct sock *sk)
+				   const struct sock *sk,
+				   const struct net *net)
 {
      struct llc_sock *llc = llc_sk(sk);
 
      return sk->sk_type == SOCK_DGRAM &&
-	  llc->laddr.lsap == laddr->lsap &&
-	  ether_addr_equal(llc->laddr.mac, laddr->mac);
+	     net_eq(sock_net(sk), net) &&
+	     llc->laddr.lsap == laddr->lsap &&
+	     ether_addr_equal(llc->laddr.mac, laddr->mac);
 }
 
 /**
  *	llc_lookup_dgram - Finds dgram socket for the local sap/mac
  *	@sap: SAP
  *	@laddr: address of local LLC (MAC + SAP)
+ *	@net: netns to look up a socket in
  *
  *	Search socket list of the SAP and finds connection using the local
  *	mac, and local sap. Returns pointer for socket found, %NULL otherwise.
  */
 static struct sock *llc_lookup_dgram(struct llc_sap *sap,
-				     const struct llc_addr *laddr)
+				     const struct llc_addr *laddr,
+				     const struct net *net)
 {
 	struct sock *rc;
 	struct hlist_nulls_node *node;
@@ -322,12 +326,12 @@ static struct sock *llc_lookup_dgram(struct llc_sap *sap,
 	rcu_read_lock_bh();
 again:
 	sk_nulls_for_each_rcu(rc, node, laddr_hb) {
-		if (llc_dgram_match(sap, laddr, rc)) {
+		if (llc_dgram_match(sap, laddr, rc, net)) {
 			/* Extra checks required by SLAB_TYPESAFE_BY_RCU */
 			if (unlikely(!refcount_inc_not_zero(&rc->sk_refcnt)))
 				goto again;
 			if (unlikely(llc_sk(rc)->sap != sap ||
-				     !llc_dgram_match(sap, laddr, rc))) {
+				     !llc_dgram_match(sap, laddr, rc, net))) {
 				sock_put(rc);
 				continue;
 			}
@@ -429,7 +433,7 @@ void llc_sap_handler(struct llc_sap *sap, struct sk_buff *skb)
 		llc_sap_mcast(sap, &laddr, skb);
 		kfree_skb(skb);
 	} else {
-		struct sock *sk = llc_lookup_dgram(sap, &laddr);
+		struct sock *sk = llc_lookup_dgram(sap, &laddr, dev_net(skb->dev));
 		if (sk) {
 			llc_sap_rcv(sap, skb, sk);
 			sock_put(sk);