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Jonas Gorski 6ff5a1b0cc net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN 
[ Upstream commit bee2ef946d3184e99077be526567d791c473036f ]

When userspace wants to take over a fdb entry by setting it as
EXTERN_LEARNED, we set both flags BR_FDB_ADDED_BY_EXT_LEARN and
BR_FDB_ADDED_BY_USER in br_fdb_external_learn_add().

If the bridge updates the entry later because its port changed, we clear
the BR_FDB_ADDED_BY_EXT_LEARN flag, but leave the BR_FDB_ADDED_BY_USER
flag set.

If userspace then wants to take over the entry again,
br_fdb_external_learn_add() sees that BR_FDB_ADDED_BY_USER and skips
setting the BR_FDB_ADDED_BY_EXT_LEARN flags, thus silently ignores the
update.

Fix this by always allowing to set BR_FDB_ADDED_BY_EXT_LEARN regardless
if this was a user fdb entry or not.

Fixes: 710ae7287737 ("net: bridge: Mark FDB entries that were added by user as such")
Signed-off-by: Jonas Gorski <jonas.gorski@bisdn.de>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20240903081958.29951-1-jonas.gorski@bisdn.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-01-19 00:10:01 +01:00
..
6lowpan
9p 9p/xen: fix release of IRQ 2024-12-17 13:24:22 +01:00
802
8021q Revert "gro: remove rcu_read_lock/rcu_read_unlock from gro_receive handlers" 2024-11-24 00:23:41 +01:00
appletalk
atm
ax25 Revert "Make more sysctl constants read-only" 2024-12-03 19:56:17 +01:00
batman-adv batman-adv: Do not let TT changes list grows indefinitely 2025-01-02 17:00:49 +01:00
bluetooth Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create() 2024-12-17 13:24:30 +01:00
bpf
bpfilter
bridge net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN 2025-01-19 00:10:01 +01:00
caif
can net: af_can: do not leave a dangling sk pointer in can_create() 2024-12-17 13:24:30 +01:00
ceph libceph: fix race between delayed_work() and ceph_monc_stop() 2024-11-19 14:19:45 +01:00
core Revert "skb_expand_head() adjust skb->truesize incorrectly" 2025-01-15 16:38:33 +01:00
dcb
dccp dccp: Fix memory leak in dccp_feat_change_recv 2024-12-17 13:24:26 +01:00
decnet
dns_resolver
dsa
ethernet Revert "gro: remove rcu_read_lock/rcu_read_unlock from gro_receive handlers" 2024-11-24 00:23:41 +01:00
ethtool ethtool: Fix wrong mod state in case of verbose and no_mask bitset 2024-12-17 13:24:27 +01:00
hsr net: hsr: avoid potential out-of-bound access in fill_frame_info() 2024-12-17 13:24:26 +01:00
ieee802154 net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() 2024-12-17 13:24:30 +01:00
ife
ipv4 BACKPORT: gso: fix udp gso fraglist segmentation after pull from frag_list 2025-01-19 00:09:57 +01:00
ipv6 ila: serialize calls to nf_register_net_hooks() 2025-01-15 16:29:54 +01:00
iucv Revert "net/iucv: fix use after free in iucv_sock_close()" 2024-11-24 00:23:55 +01:00
kcm kcm: Serialise kcm_sendmsg() for the same socket. 2024-11-23 23:20:48 +01:00
key
l2tp genetlink: hold RCU in genlmsg_mcast() 2024-11-23 23:21:59 +01:00
l3mdev net: Add l3mdev index to flow struct and avoid oif reset for port devices 2024-11-23 23:21:52 +01:00
lapb
llc net: llc: reset skb->transport_header 2025-01-15 16:29:53 +01:00
mac80211 wifi: mac80211: wake the queues in case of failure in resume 2025-01-15 16:29:54 +01:00
mac802154 Revert "net: mac802154: Fix racy device stats updates by DEV_STATS_INC() and DEV_STATS_ADD()" 2024-11-19 14:52:14 +01:00
mpls
mptcp Revert "mptcp: correct MPTCP_SUBFLOW_ATTR_SSN_OFFSET reserved size" 2024-11-24 00:23:53 +01:00
ncm
ncsi net/ncsi: Fix the multi thread manner of NCSI driver 2024-11-19 14:19:00 +01:00
netfilter netfilter: ipset: Fix for recursive locking warning 2025-01-15 16:29:41 +01:00
netlabel
netlink netlink: terminate outstanding dump on socket close 2024-12-17 13:20:50 +01:00
netrom netrom: check buffer length before accessing it 2025-01-15 16:29:53 +01:00
nfc nfc: nci: Fix handling of zero-length payload packets in nci_rx_work() 2024-11-19 12:27:10 +01:00
nsh
openvswitch openvswitch: Set the skbuff pkt_type for proper pmtud support. 2024-11-19 12:27:09 +01:00
packet af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK 2025-01-15 16:29:54 +01:00
phonet Revert "Make more sysctl constants read-only" 2024-12-03 19:56:17 +01:00
psample
qrtr Revert "net: qrtr: Update packets cloning when broadcasting" 2024-11-24 00:23:18 +01:00
rds Revert "net:rds: Fix possible deadlock in rds_message_put" 2024-11-24 00:23:49 +01:00
rfkill net: rfkill: gpio: Add check for clk_enable() 2024-12-17 13:24:07 +01:00
rose Revert "Make more sysctl constants read-only" 2024-12-03 19:56:17 +01:00
rxrpc
sched BACKPORT: netem: fix return value if duplicate enqueue fails 2025-01-19 00:09:58 +01:00
sctp net/sctp: Prevent autoclose integer overflow in sctp_association_init() 2025-01-15 16:29:56 +01:00
skb_tracer
smc net/smc: check return value of sock_recvmsg when draining clc data 2025-01-15 16:29:41 +01:00
strparser
sunrpc net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket 2025-01-19 00:09:58 +01:00
switchdev
tipc tipc: fix NULL deref in cleanup_bearer() 2025-01-02 17:00:49 +01:00
tls tls: fix missing memory barrier in tls_init 2024-11-19 12:27:09 +01:00
unix Revert "af_unix: Remove put_pid()/put_cred() in copy_peercred()." 2024-11-24 00:23:43 +01:00
vmw_vsock virtio/vsock: Fix accept_queue memory leak 2025-01-02 17:00:49 +01:00
wimax
wireless Revert "wifi: nl80211: don't give key data to userspace" 2024-11-24 00:23:55 +01:00
x25 Revert "Make more sysctl constants read-only" 2024-12-03 19:56:17 +01:00
xdp
xfrm xfrm: store and rely on direction to construct offload flags 2024-12-17 13:24:04 +01:00
compat.c
devres.c
Kconfig
Makefile
socket.c
sysctl_net.c
TEST_MAPPING