[ 202.752361][ T1969] br0: port 1(veth1) entered blocking state
[ 202.752632][ T1969] br0: port 1(veth1) entered disabled state
[ 202.752905][ T1969] veth1: entered allmulticast mode
[ 202.755026][ T1969] veth1: entered promiscuous mode
[ 202.851062][ T1971] br0: port 2(veth2) entered blocking state
[ 202.851394][ T1971] br0: port 2(veth2) entered disabled state
[ 202.851720][ T1971] veth2: entered allmulticast mode
[ 202.854198][ T1971] veth2: entered promiscuous mode
[ 203.067130][ T38] br0: port 1(veth1) entered blocking state
[ 203.067589][ T38] br0: port 1(veth1) entered forwarding state
[ 203.069874][ C2]
[ 203.070299][ C2] =============================
[ 203.070656][ C2] WARNING: suspicious RCU usage
[ 203.070983][ C2] 6.14.0-rc6-virtme #1 Not tainted
[ 203.071350][ C2] -----------------------------
[ 203.071704][ C2] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 203.072288][ C2]
[ 203.072288][ C2] other info that might help us debug this:
[ 203.072288][ C2]
[ 203.072931][ C2]
[ 203.072931][ C2] rcu_scheduler_active = 2, debug_locks = 1
[ 203.073479][ C2] 6 locks held by kworker/u17:0/38:
[ 203.073824][ C2] #0: ffff8880010a9d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 203.074511][ C2] #1: ffffc900002afd40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 203.075212][ C2] #2: ffffffff9a3f0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
[ 203.075844][ C2] #3: ffffc90000248d78 ((&pmctx->ip4_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 203.076588][ C2] #4: ffff88800ece3358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 203.077432][ C2] #5: ffffffff99b5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 203.078364][ C2]
[ 203.078364][ C2] stack backtrace:
[ 203.078780][ C2] CPU: 2 UID: 0 PID: 38 Comm: kworker/u17:0 Not tainted 6.14.0-rc6-virtme #1
[ 203.078786][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 203.078789][ C2] Workqueue: events_unbound linkwatch_event
[ 203.078798][ C2] Call Trace:
[ 203.078801][ C2]
[ 203.078806][ C2] dump_stack_lvl+0xb0/0xd0
[ 203.078818][ C2] lockdep_rcu_suspicious+0x1ea/0x280
[ 203.078835][ C2] dev_hard_start_xmit+0x2fc/0x3f0
[ 203.078857][ C2] __dev_queue_xmit+0xfaf/0x18d0
[ 203.078877][ C2] ? __build_skb_around+0x23d/0x350
[ 203.078893][ C2] ? __pfx___dev_queue_xmit+0x10/0x10
[ 203.078897][ C2] ? __pfx___alloc_skb+0x10/0x10
[ 203.078902][ C2] ? __pfx___lock_release+0x10/0x10
[ 203.078919][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 203.078932][ C2] ? __pfx___br_multicast_query_handle_vlan+0x10/0x10 [bridge]
[ 203.079026][ C2] br_dev_queue_push_xmit+0x115/0x250 [bridge]
[ 203.079083][ C2] ? hlock_class+0x10/0x130
[ 203.079091][ C2] ? __pfx_br_dev_queue_push_xmit+0x10/0x10 [bridge]
[ 203.079152][ C2] ? br_multicast_count+0x42/0x130 [bridge]
[ 203.079225][ C2] __br_multicast_send_query+0x3b7/0x950 [bridge]
[ 203.079305][ C2] ? __pfx___br_multicast_send_query+0x10/0x10 [bridge]
[ 203.079375][ C2] ? __lock_acquire+0xb9a/0x1680
[ 203.079395][ C2] ? br_multicast_send_query+0x228/0x440 [bridge]
[ 203.079451][ C2] br_multicast_send_query+0x228/0x440 [bridge]
[ 203.079521][ C2] ? __pfx_br_multicast_send_query+0x10/0x10 [bridge]
[ 203.079579][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 203.079647][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 203.079710][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 203.079723][ C2] ? do_raw_spin_lock+0x131/0x270
[ 203.079730][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 203.079736][ C2] ? lock_acquire+0x32/0xc0
[ 203.079741][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 203.079813][ C2] ? br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 203.079873][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 203.079932][ C2] br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 203.079999][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 203.080058][ C2] call_timer_fn+0x13b/0x230
[ 203.080066][ C2] ? call_timer_fn+0xe8/0x230
[ 203.080071][ C2] ? call_timer_fn+0xe8/0x230
[ 203.080079][ C2] ? __pfx_call_timer_fn+0x10/0x10
[ 203.080086][ C2] ? hlock_class+0x4e/0x130
[ 203.080104][ C2] ? mark_held_locks+0x9e/0xe0
[ 203.080126][ C2] __run_timers+0x545/0x810
[ 203.080133][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 203.080211][ C2] ? __pfx___run_timers+0x10/0x10
[ 203.080229][ C2] ? do_raw_spin_lock+0x131/0x270
[ 203.080239][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 203.080246][ C2] ? lock_acquire+0x32/0xc0
[ 203.080252][ C2] ? run_timer_softirq+0xe6/0x1c0
[ 203.080272][ C2] run_timer_softirq+0xee/0x1c0
[ 203.080280][ C2] handle_softirqs+0x1f6/0x5c0
[ 203.080298][ C2] ? ip6_route_add+0x79/0x140
[ 203.080313][ C2] do_softirq+0x4d/0xa0
[ 203.080320][ C2]
[ 203.080322][ C2]
[ 203.080325][ C2] __local_bh_enable_ip+0xf6/0x120
[ 203.080333][ C2] ip6_route_add+0x79/0x140
[ 203.080346][ C2] addrconf_prefix_route+0x2a6/0x430
[ 203.080361][ C2] ? __pfx_addrconf_prefix_route+0x10/0x10
[ 203.080366][ C2] ? atomic_notifier_call_chain+0x85/0x140
[ 203.080422][ C2] ? ip6_route_add+0xe7/0x140
[ 203.080444][ C2] addrconf_add_linklocal+0x132/0x2f0
[ 203.080456][ C2] ? __pfx_addrconf_add_linklocal+0x10/0x10
[ 203.080494][ C2] addrconf_addr_gen+0x2a4/0x2f0
[ 203.080502][ C2] ? __pfx_addrconf_addr_gen+0x10/0x10
[ 203.080531][ C2] ? addrconf_notify+0x96d/0xd50
[ 203.080536][ C2] addrconf_notify+0x96d/0xd50
[ 203.080552][ C2] notifier_call_chain+0xcd/0x150
[ 203.080575][ C2] netdev_state_change+0xf5/0x120
[ 203.080582][ C2] ? __pfx_netdev_state_change+0x10/0x10
[ 203.080614][ C2] linkwatch_do_dev+0xd2/0x100
[ 203.080622][ C2] __linkwatch_run_queue+0x1df/0x650
[ 203.080637][ C2] ? __pfx___linkwatch_run_queue+0x10/0x10
[ 203.080649][ C2] ? lock_acquire+0x32/0xc0
[ 203.080669][ C2] linkwatch_event+0x40/0x60
[ 203.080673][ C2] process_one_work+0xe55/0x16d0
[ 203.080702][ C2] ? __pfx___lock_release+0x10/0x10
[ 203.080711][ C2] ? __pfx_process_one_work+0x10/0x10
[ 203.080737][ C2] ? assign_work+0x16c/0x240
[ 203.080757][ C2] worker_thread+0x58c/0xce0
[ 203.080783][ C2] ? __pfx_worker_thread+0x10/0x10
[ 203.080795][ C2] kthread+0x359/0x5d0
[ 203.080804][ C2] ? __pfx_kthread+0x10/0x10
[ 203.080822][ C2] ? __pfx_kthread+0x10/0x10
[ 203.080833][ C2] ret_from_fork+0x31/0x70
[ 203.080840][ C2] ? __pfx_kthread+0x10/0x10
[ 203.080847][ C2] ret_from_fork_asm+0x1a/0x30
[ 203.080884][ C2]
[ 203.159000][ T40] br0: port 2(veth2) entered blocking state
[ 203.159343][ T40] br0: port 2(veth2) entered forwarding state
[ 214.407095][ T1996] GACT probability NOT on
[ 389.459748][ T3294] br0: port 2(veth2) entered disabled state
[ 389.533906][ T3295] br0: port 1(veth1) entered disabled state
[ 389.614919][ T3296] veth2: left allmulticast mode
[ 389.615201][ T3296] veth2: left promiscuous mode
[ 389.615529][ T3296] br0: port 2(veth2) entered disabled state
[ 389.616952][ T3296] veth1: left allmulticast mode
[ 389.617175][ T3296] veth1: left promiscuous mode
[ 389.617485][ T3296] br0: port 1(veth1) entered disabled state