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Luiz Augusto von DentzandGreg Kroah-Hartman 6f78474c05 Bluetooth: L2CAP: Fix regressions caused by reusing ident 
commit 761fb8ec87 upstream.

This attempt to fix regressions caused by reusing ident which apparently
is not handled well on certain stacks causing the stack to not respond to
requests, so instead of simple returning the first unallocated id this
stores the last used tx_ident and then attempt to use the next until all
available ids are exausted and then cycle starting over to 1.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=221120
Link: https://bugzilla.kernel.org/show_bug.cgi?id=221177
Fixes: 6c3ea155e5 ("Bluetooth: L2CAP: Fix not tracking outstanding TX ident")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Tested-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-07-24 15:55:18 +02:00
..
9p
…
bluetooth
Bluetooth: L2CAP: Fix regressions caused by reusing ident
2026-07-24 15:55:18 +02:00
caif
…
iucv
…
netfilter
netfilter: nf_queue: pin bridge device while NFQUEUE holds fake dst
2026-07-24 15:54:59 +02:00
netns
icmp: icmp_msgs_per_sec and icmp_msgs_burst sysctls become per netns
2026-03-04 07:20:08 -05:00
nfc
nfc: nci: Fix race between rfkill and nci_unregister_device().
2026-02-06 16:44:16 +01:00
phonet
phonet: Pass net and ifindex to phonet_address_notify().
2026-07-04 13:41:33 +02:00
sctp
sctp: hold socket lock when dumping endpoints in sctp_diag
2026-07-24 15:54:49 +02:00
tc_act
net/sched: fix pedit partial COW leading to page cache corruption
2026-07-04 13:41:27 +02:00
6lowpan.h
…
act_api.h
net/sched: act_api: use RCU with deferred freeing for action lifecycle
2026-06-19 13:37:08 +02:00
addrconf.h
ipv6: mcast: Fix potential UAF in MLD delayed work
2026-07-24 15:54:57 +02:00
af_ieee802154.h
…
af_rxrpc.h
…
af_unix.h
af_unix: Try not to hold unix_gc_lock during accept().
2025-06-04 14:40:24 +02:00
af_vsock.h
…
ah.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
amt.h
…
arp.h
neighbour: switch to standard rcu, instead of rcu_bh
2023-10-10 22:00:42 +02:00
atmclip.h
…
ax25.h
ax25: rcu protect dev->ax25_ptr
2025-02-21 13:49:02 +01:00
ax88796.h
…
bareudp.h
…
bond_3ad.h
bonding: 3ad: implement proper RCU rules for port->aggregator
2026-06-01 17:39:30 +02:00
bond_alb.h
bonding (gcc13): synchronize bond_{a,t}lb_xmit() types
2023-05-11 23:03:41 +09:00
bond_options.h
bonding: add support for per-port LACP actor priority
2026-06-01 17:39:30 +02:00
bonding.h
bpf/bonding: reject vlan+srcmac xmit_hash_policy change when XDP is loaded
2026-06-19 13:37:07 +02:00
bpf_sk_storage.h
…
busy_poll.h
net: busy-poll: use ktime_get_ns() instead of local_clock()
2024-09-04 13:25:02 +02:00
calipso.h
…
cfg80211-wext.h
…
cfg80211.h
cfg80211: support RNR for EMA AP
2026-01-11 15:18:59 +01:00
cfg802154.h
mac802154: fix llsec key resources release in mac802154_llsec_key_del
2024-04-03 15:19:31 +02:00
checksum.h
net: Fix checksum update for ILA adj-transport
2025-06-27 11:07:38 +01:00
cipso_ipv4.h
…
cls_cgroup.h
net/cls_cgroup: Fix task_get_classid() during qdisc run
2025-12-07 06:12:24 +09:00
codel_impl.h
codel: remove unnecessary sock.h include
2021-12-22 15:03:47 -08:00
codel_qdisc.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
codel.h
codel: remove unnecessary pkt_sched.h include
2021-12-22 15:03:51 -08:00
compat.h
net: copy from user before calling __get_compat_msghdr
2022-07-24 18:39:17 -06:00
datalink.h
…
dcbevent.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
dcbnl.h
…
devlink.h
net: devlink: add port_init/fini() helpers to allow pre-register/post-unregister functions
2022-09-30 18:17:16 -07:00
dropreason.h
net: skb: export skb drop reaons to user by TRACE_DEFINE_ENUM
2022-09-07 15:28:08 +01:00
dsa.h
net: dsa: add support for mac_prepare() and mac_finish() calls
2025-05-02 07:46:50 +02:00
dsfield.h
…
dst_cache.h
wireguard: device: reset peer src endpoint when netns exits
2021-11-29 19:50:45 -08:00
dst_metadata.h
…
dst_ops.h
net: fix __dst_negative_advice() race
2024-06-16 13:41:40 +02:00
dst.h
net: Add locking to protect skb->dev access in ip_output
2026-01-17 16:39:28 +01:00
erspan.h
…
esp.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
espintcp.h
xfrm: espintcp: save and call old ->sk_destruct
2020-04-20 07:34:16 +02:00
ethoc.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
failover.h
net: failover: add net device refcount tracker
2021-12-06 16:06:02 -08:00
fib_notifier.h
…
fib_rules.h
net: fib_rules: Don't dump dying fib_rule in fib_rules_dump().
2026-07-24 15:54:42 +02:00
firewire.h
firewire: net: Make use of get_unaligned_be48(), put_unaligned_be48()
2022-07-28 22:21:54 -07:00
flow_dissector.h
…
flow_offload.h
flow_offload: Introduce flow_match_l2tpv3
2022-09-20 09:13:38 +02:00
flow.h
ipv4: Drop tos parameter from flowi4_update_output()
2025-05-18 08:21:21 +02:00
fou.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fq_impl.h
net/fq_impl: Use the bitmap API to allocate bitmaps
2022-07-11 19:49:38 -07:00
fq.h
…
garp.h
…
gen_stats.h
…
genetlink.h
genetlink: Use internal flags for multicast groups
2026-06-19 13:37:25 +02:00
geneve.h
…
gre.h
ip_gre: add csum offload support for gre header
2021-01-29 20:39:14 -08:00
gro_cells.h
…
gro.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-08-25 16:07:42 -07:00
gtp.h
…
gue.h
gue: validate REMCSUM private option length
2026-07-24 15:54:55 +02:00
hwbm.h
…
icmp.h
…
ieee80211_radiotap.h
…
ieee802154_netdev.h
…
if_inet6.h
net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX
2023-12-20 17:00:15 +01:00
ife.h
net: ife: drop include of module.h from net/ife.h
2019-04-22 21:50:53 -07:00
ila.h
…
inet6_connection_sock.h
…
inet6_hashtables.h
net: remove duplicate reuseport_lookup functions
2024-06-12 11:03:12 +02:00
inet_common.h
inet: factor out locked section of inet_accept() in a new helper
2024-06-12 11:03:53 +02:00
inet_connection_sock.h
tcp/dccp: allow a connection when sk_max_ack_backlog is zero
2025-01-17 13:34:38 +01:00
inet_dscp.h
…
inet_ecn.h
…
inet_frag.h
…
inet_hashtables.h
udp: Fix wildcard bind conflict check when using hash2
2026-04-11 14:16:08 +02:00
inet_sock.h
udp: fix busy polling
2024-01-31 16:17:04 -08:00
inet_timewait_sock.h
tcp/dccp: do not care about families in inet_twsk_purge()
2024-08-29 17:30:44 +02:00
inetpeer.h
inetpeer: remove create argument of inet_getpeer()
2025-02-21 13:49:01 +01:00
ioam6.h
ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data()
2026-03-04 07:20:55 -05:00
ip6_checksum.h
…
ip6_fib.h
ipv6: Remove in6addr_any alternatives.
2023-09-19 12:28:10 +02:00
ip6_route.h
ipv6: fix source address selection with route leak
2024-08-14 13:53:02 +02:00
ip6_tunnel.h
…
ip_fib.h
ipv4: fib: Don't ignore error route in local/main tables.
2026-07-24 15:54:51 +02:00
ip_tunnels.h
net: tunnel: make skb_vlan_inet_prepare() return drop reasons
2026-02-19 16:25:21 +01:00
ip_vs.h
ipvs: pass parsed transport offset to state handlers
2026-07-24 15:54:57 +02:00
ip.h
icmp: icmp_msgs_per_sec and icmp_msgs_burst sysctls become per netns
2026-03-04 07:20:08 -05:00
ipcomp.h
xfrm: ipcomp: add extack to ipcomp{4,6}_init_state
2022-09-29 07:18:00 +02:00
ipconfig.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
ipv6_frag.h
…
ipv6_stubs.h
bpf: Derive source IP addr via bpf_*_fib_lookup()
2024-03-06 14:45:20 +00:00
ipv6.h
ipv6: rename and move ip6_dst_lookup_tunnel()
2026-06-01 17:39:29 +02:00
iw_handler.h
net: Spelling s/stucture/structure/
2018-03-27 09:51:23 +02:00
kcm.h
kcm: Serialise kcm_sendmsg() for the same socket.
2024-08-29 17:30:44 +02:00
l3mdev.h
vrf: use RCU protection in l3mdev_l3_out()
2025-02-21 13:49:56 +01:00
lag.h
net: Add lag.h, net_lag_port_dev_txable()
2018-07-11 23:10:19 -07:00
lapb.h
net: lapb: increase LAPB_HEADER_LEN
2024-12-19 18:08:53 +01:00
lib80211.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
llc_c_ac.h
…
llc_c_ev.h
…
llc_c_st.h
…
llc_conn.h
…
llc_if.h
…
llc_pdu.h
llc: Drop support for ETH_P_TR_802_2.
2024-01-31 16:17:04 -08:00
llc_s_ac.h
…
llc_s_ev.h
…
llc_s_st.h
…
llc_sap.h
…
llc.h
llc: fix out-of-bound array index in llc_sk_dev_hash()
2021-11-07 19:25:29 +00:00
lwtunnel.h
lwt: Check LWTUNNEL_XMIT_CONTINUE strictly
2023-09-13 09:42:33 +02:00
mac80211.h
wifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure
2026-06-01 17:38:40 +02:00
mac802154.h
…
macsec.h
macsec: Enable devices to advertise whether they update sk_buff md_dst during offloads
2024-05-02 16:29:32 +02:00
mctp.h
net: mctp: fix don't require received header reserved bits to be zero
2026-06-19 13:37:20 +02:00
mctpdevice.h
…
mip6.h
…
mld.h
mld: add new workqueues for process mld events
2021-03-26 15:14:56 -07:00
mpls_iptunnel.h
…
mpls.h
…
mptcp.h
…
mrp.h
…
ncsi.h
…
ndisc.h
neighbour: switch to standard rcu, instead of rcu_bh
2023-10-10 22:00:42 +02:00
neighbour.h
neighbour: add support for NUD_PERMANENT proxy entries
2025-08-28 16:25:57 +02:00
net_debug.h
net: add CONFIG_DEBUG_NET
2022-05-11 12:43:10 +01:00
net_failover.h
net: Introduce net_failover driver
2018-05-28 22:59:54 -04:00
net_namespace.h
net: add dev_net_rcu() helper
2025-02-21 13:50:06 +01:00
net_ratelimit.h
…
net_trackers.h
…
netdev_queues.h
net: provide macros for commonly copied lockless queue stop/wake code
2024-11-01 01:56:04 +01:00
netevent.h
…
netlabel.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
netlink.h
netlink: allow be16 and be32 types in all uint policy checks
2026-04-11 14:16:09 +02:00
netprio_cgroup.h
…
netrom.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
nexthop.h
ipv6: remove nexthop_fib6_nh_bh()
2023-10-10 22:00:46 +02:00
nl802154.h
…
nsh.h
…
p8022.h
…
page_pool.h
page_pool: fix inconsistency for page_pool_ring_[un]lock()
2023-06-05 09:26:20 +02:00
pie.h
net/sched: sch_pie: annotate data-races in pie_dump_stats()
2026-06-01 17:39:25 +02:00
ping.h
net/ipv4: ping_group_range: allow GID from 2147483648 to 4294967294
2023-06-14 11:15:16 +02:00
pkt_cls.h
net: sched: fix TCF_LAYER_TRANSPORT handling in tcf_get_base_ptr()
2026-06-01 17:38:38 +02:00
pkt_sched.h
net/sched: sch_qfq: Fix null-deref in agg_dequeue
2025-12-07 06:12:09 +09:00
pptp.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
protocol.h
tcp/udp: Make early_demux back namespacified.
2022-07-15 18:50:35 -07:00
psample.h
psample: Add a fwd declaration for skbuff
2021-08-09 15:34:21 -07:00
psnap.h
…
raw.h
raw: Fix NULL deref in raw_get_next().
2023-04-13 16:55:23 +02:00
rawv6.h
…
red.h
treewide: use get_random_u32() when possible
2022-10-11 17:42:58 -06:00
regulatory.h
wifi: cfg80211: fix regulatory disconnect with OCB/NAN
2023-07-19 16:21:10 +02:00
request_sock.h
tcp: Use BPF timeout setting for SYN ACK RTO
2022-02-02 14:45:18 +00:00
rose.h
net: rose: convert 'use' field to refcount_t
2025-09-04 15:26:28 +02:00
route.h
ipv4: rename and move ip_route_output_tunnel()
2026-06-01 17:39:29 +02:00
rpl.h
ipv6: rpl: Fix Route of Death.
2023-06-14 11:15:20 +02:00
rsi_91x.h
…
rtnetlink.h
net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink
2026-07-24 15:54:16 +02:00
rtnh.h
net: Rename net/nexthop.h net/rtnh.h
2019-04-22 21:47:25 -07:00
sch_generic.h
net/sched: teql: Fix double-free in teql_master_xmit
2026-03-25 11:03:21 +01:00
scm.h
af_unix: Add dead flag to struct scm_fp_list.
2025-06-04 14:40:24 +02:00
secure_seq.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
seg6_hmac.h
…
seg6_local.h
…
seg6.h
…
selftests.h
…
slhc_vj.h
…
smc.h
…
snmp.h
…
sock_reuseport.h
…
sock.h
net: Drop the lock in skb_may_tx_timestamp()
2026-07-24 15:54:23 +02:00
Space.h
wan: remove sbni/granch driver
2021-08-03 13:05:26 +01:00
stp.h
…
strparser.h
strparser: Add read_sock callback
2025-03-07 16:56:37 +01:00
switchdev.h
net: bridge: switchdev: Skip MDB replays of deferred events on offload
2024-03-01 13:26:35 +01:00
tcp_states.h
…
tcp.h
tcp: preserve const qualifier in tcp_sk()
2026-06-01 17:39:23 +02:00
timewait_sock.h
…
tipc.h
flow_dissector: do not rely on implicit casts
2018-05-08 00:02:41 -04:00
tls_toe.h
…
tls.h
net: tls: Cancel RX async resync request on rcd_delta overflow
2025-12-07 06:12:39 +09:00
transp_v6.h
…
tso.h
net: tso: cache transport header length
2020-06-18 20:46:23 -07:00
tun_proto.h
…
udp_tunnel.h
ipv6: rename and move ip6_dst_lookup_tunnel()
2026-06-01 17:39:29 +02:00
udp.h
net: drop UFO packets in udp_rcv_segment()
2025-08-15 12:05:10 +02:00
udplite.h
…
vsock_addr.h
…
vxlan.h
vxlan: Fix nexthop hash size
2023-08-11 12:08:17 +02:00
wext.h
lift handling of SIOCIW... out of dev_ioctl()
2018-01-24 19:13:45 -05:00
x25.h
…
x25device.h
…
xdp_priv.h
…
xdp_sock_drv.h
…
xdp_sock.h
xsk: Fix race condition in AF_XDP generic RX path
2026-02-19 16:25:19 +01:00
xdp.h
bpf: Clear pfmemalloc flag when freeing all fragments
2025-12-07 06:12:17 +09:00
xfrm.h
xfrm: validate selector family and prefixlen during match
2026-07-24 15:54:48 +02:00
xsk_buff_pool.h
xsk: Fix race condition in AF_XDP generic RX path
2026-02-19 16:25:19 +01:00