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linux/net/bridge
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Nikolay Aleksandrov c6c9c32d73 net: bridge: fix MST static key usage 
[ Upstream commit ee87c63f9b ]

As Ido pointed out, the static key usage in MST is buggy and should use
inc/dec instead of enable/disable because we can have multiple bridges
with MST enabled which means a single bridge can disable MST for all.
Use static_branch_inc/dec to avoid that. When destroying a bridge decrement
the key if MST was enabled.

Fixes: ec7328b591 ("net: bridge: mst: Multiple Spanning Tree (MST) mode")
Reported-by: Ido Schimmel <idosch@nvidia.com>
Closes: https://lore.kernel.org/netdev/20251104120313.1306566-1-razor@blackwall.org/T/#m6888d87658f94ed1725433940f4f4ebb00b5a68b
Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20251105111919.1499702-3-razor@blackwall.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-13 15:37:45 -05:00
..
netfilter
netfilter: add back NETFILTER_XTABLES dependencies
2025-08-07 13:19:25 +02:00
br_arp_nd_proxy.c
net: bridge: Prevent unicast ARP/NS packets from being suppressed by bridge
2025-04-09 19:13:43 -07:00
br_cfm_netlink.c
bridge: cfm: fix enum typo in br_cc_ccm_tx_parse
2023-12-26 22:38:13 +00:00
br_cfm.c
bridge: cfm: remove redundant return
2021-06-22 10:35:15 -07:00
br_device.c
net: move misc netdev_lock flavors to a separate header
2025-03-08 09:06:50 -08:00
br_fdb.c
rtnetlink: add ndo_fdb_dump_context
2024-12-10 18:32:32 -08:00
br_forward.c
net: bridge: fix use-after-free due to MST port state bypass
2025-11-13 15:37:44 -05:00
br_if.c
net: bridge: fix MST static key usage
2025-11-13 15:37:45 -05:00
br_input.c
net: bridge: fix use-after-free due to MST port state bypass
2025-11-13 15:37:44 -05:00
br_ioctl.c
net: Remove RTNL dance for SIOCBRADDIF and SIOCBRDELIF.
2025-03-21 22:10:06 +01:00
br_mdb.c
net: bridge: mcast: Notify on mdb offload failure
2025-04-14 15:56:43 -07:00
br_mrp_netlink.c
bridge: mrp: Use hlist_head instead of list_head for mrp
2020-11-09 16:42:12 -08:00
br_mrp_switchdev.c
bridge: mrp: Extend br_mrp_switchdev to detect better the errors
2021-02-16 14:47:46 -08:00
br_mrp.c
net: bridge: mrp: Update the Test frames for MRA
2021-06-28 15:46:10 -07:00
br_mst.c
net: bridge: fix MST static key usage
2025-11-13 15:37:45 -05:00
br_multicast_eht.c
treewide, timers: Rename from_timer() to timer_container_of()
2025-06-08 09:07:37 +02:00
br_multicast.c
net: bridge: fix soft lockup in br_multicast_query_expired()
2025-08-14 17:49:33 -07:00
br_netfilter_hooks.c
netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm
2025-08-27 11:53:37 +02:00
br_netfilter_ipv6.c
netfilter: bridge: replace physindev with physinif in nf_bridge_info
2024-01-17 12:02:49 +01:00
br_netlink_tunnel.c
net: bridge: fix an inconsistent indentation
2024-06-05 10:04:47 +01:00
br_netlink.c
net: s/dev_get_flags/netif_get_flags/
2025-07-18 17:27:47 -07:00
br_nf_core.c
bridge: netfilter: Fix forwarding of fragmented packets
2025-05-16 16:02:06 -07:00
br_private_cfm.h
bridge: cfm: Kernel space implementation of CFM. CCM frame RX added.
2020-10-29 18:39:43 -07:00
br_private_mcast_eht.h
net: bridge: multicast: use multicast contexts instead of bridge or port
2021-07-20 05:41:19 -07:00
br_private_mrp.h
net: bridge: mrp: Update the Test frames for MRA
2021-06-28 15:46:10 -07:00
br_private_stp.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
br_private_tunnel.h
bridge: always declare tunnel functions
2023-05-17 21:28:58 -07:00
br_private.h
net: bridge: fix MST static key usage
2025-11-13 15:37:45 -05:00
br_stp_bpdu.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
br_stp_if.c
treewide: Switch/rename to timer_delete[_sync]()
2025-04-05 10:30:12 +02:00
br_stp_timer.c
treewide, timers: Rename from_timer() to timer_container_of()
2025-06-08 09:07:37 +02:00
br_stp.c
treewide: Switch/rename to timer_delete[_sync]()
2025-04-05 10:30:12 +02:00
br_switchdev.c
net: s/dev_get_port_parent_id/netif_get_port_parent_id/
2025-07-18 17:27:46 -07:00
br_sysfs_br.c
sysfs: treewide: switch back to bin_attribute::read()/write()
2025-06-17 10:44:13 +02:00
br_sysfs_if.c
bridge: move from strlcpy with unused retval to strscpy
2022-08-22 17:57:30 -07:00
br_vlan_options.c
bridge: vlan: Allow setting VLAN neighbor suppression state
2023-04-21 08:25:50 +01:00
br_vlan_tunnel.c
ip_tunnel: convert __be16 tunnel flags to bitmaps
2024-04-01 10:49:28 +01:00
br_vlan.c
bridge: br_vlan_fill_forward_path_pvid: use br_vlan_group_rcu()
2025-10-19 16:37:13 +02:00
br.c
net: bridge: Install FDB for bridge MAC on VLAN 0
2025-11-13 15:37:30 -05:00
Kconfig
bridge: cfm: Add BRIDGE_CFM to Kconfig.
2020-10-29 18:39:43 -07:00
Makefile
net: bridge: mst: Multiple Spanning Tree (MST) mode
2022-03-17 16:49:57 -07:00