[ 105.108621][ T825] br0: port 1(veth1) entered blocking state
[ 105.109077][ T825] br0: port 1(veth1) entered disabled state
[ 105.109387][ T825] veth1: entered allmulticast mode
[ 105.111338][ T825] veth1: entered promiscuous mode
[ 105.192896][ T826] br0: port 2(veth2) entered blocking state
[ 105.193218][ T826] br0: port 2(veth2) entered disabled state
[ 105.193512][ T826] veth2: entered allmulticast mode
[ 105.195440][ T826] veth2: entered promiscuous mode
[ 105.425274][ T38] br0: port 1(veth1) entered blocking state
[ 105.425749][ T38] br0: port 1(veth1) entered forwarding state
[ 105.427026][ C2]
[ 105.427326][ C2] =============================
[ 105.427566][ C2] WARNING: suspicious RCU usage
[ 105.427774][ C2] 6.14.0-rc6-virtme #1 Not tainted
[ 105.427993][ C2] -----------------------------
[ 105.428222][ C2] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 105.428635][ C2]
[ 105.428635][ C2] other info that might help us debug this:
[ 105.428635][ C2]
[ 105.429030][ C2]
[ 105.429030][ C2] rcu_scheduler_active = 2, debug_locks = 1
[ 105.429337][ C2] 6 locks held by kworker/u17:0/38:
[ 105.429558][ C2] #0: ffff8880010a9d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 105.429969][ C2] #1: ffffc900002afd40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 105.430371][ C2] #2: ffffffff99bf0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
[ 105.430739][ C2] #3: ffffc90000248d78 ((&pmctx->ip4_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 105.431138][ C2] #4: ffff888011723358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 105.431650][ C2] #5: ffffffff9935b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 105.432000][ C2]
[ 105.432000][ C2] stack backtrace:
[ 105.432271][ C2] CPU: 2 UID: 0 PID: 38 Comm: kworker/u17:0 Not tainted 6.14.0-rc6-virtme #1
[ 105.432278][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 105.432281][ C2] Workqueue: events_unbound linkwatch_event
[ 105.432288][ C2] Call Trace:
[ 105.432291][ C2]
[ 105.432296][ C2] dump_stack_lvl+0xb0/0xd0
[ 105.432307][ C2] lockdep_rcu_suspicious+0x1ea/0x280
[ 105.432325][ C2] dev_hard_start_xmit+0x2fc/0x3f0
[ 105.432347][ C2] __dev_queue_xmit+0xfaf/0x18d0
[ 105.432367][ C2] ? __build_skb_around+0x23d/0x350
[ 105.432384][ C2] ? __pfx___dev_queue_xmit+0x10/0x10
[ 105.432389][ C2] ? __pfx___alloc_skb+0x10/0x10
[ 105.432401][ C2] ? stack_trace_save+0x94/0xd0
[ 105.432410][ C2] ? __pfx_stack_trace_save+0x10/0x10
[ 105.432424][ C2] ? __pfx___br_multicast_query_handle_vlan+0x10/0x10 [bridge]
[ 105.432526][ C2] br_dev_queue_push_xmit+0x115/0x250 [bridge]
[ 105.432589][ C2] ? __pfx_br_dev_queue_push_xmit+0x10/0x10 [bridge]
[ 105.432653][ C2] ? br_multicast_count+0x42/0x130 [bridge]
[ 105.432725][ C2] __br_multicast_send_query+0x3b7/0x950 [bridge]
[ 105.432811][ C2] ? __pfx___br_multicast_send_query+0x10/0x10 [bridge]
[ 105.432888][ C2] ? __lock_acquire+0xb9a/0x1680
[ 105.432909][ C2] ? br_multicast_send_query+0x228/0x440 [bridge]
[ 105.432972][ C2] br_multicast_send_query+0x228/0x440 [bridge]
[ 105.433042][ C2] ? __pfx_br_multicast_send_query+0x10/0x10 [bridge]
[ 105.433105][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 105.433175][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 105.433235][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 105.433247][ C2] ? do_raw_spin_lock+0x131/0x270
[ 105.433257][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 105.433264][ C2] ? lock_acquire+0x32/0xc0
[ 105.433269][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 105.433344][ C2] ? br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 105.433404][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 105.433443][ C2] br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 105.433480][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 105.433514][ C2] call_timer_fn+0x13b/0x230
[ 105.433518][ C2] ? call_timer_fn+0xe8/0x230
[ 105.433521][ C2] ? call_timer_fn+0xe8/0x230
[ 105.433525][ C2] ? __pfx_call_timer_fn+0x10/0x10
[ 105.433529][ C2] ? hlock_class+0x4e/0x130
[ 105.433538][ C2] ? mark_held_locks+0x9e/0xe0
[ 105.433550][ C2] __run_timers+0x545/0x810
[ 105.433554][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 105.433597][ C2] ? __pfx___run_timers+0x10/0x10
[ 105.433606][ C2] ? do_raw_spin_lock+0x131/0x270
[ 105.433611][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 105.433614][ C2] ? lock_acquire+0x32/0xc0
[ 105.433617][ C2] ? run_timer_softirq+0xe6/0x1c0
[ 105.433628][ C2] run_timer_softirq+0xee/0x1c0
[ 105.433633][ C2] handle_softirqs+0x1f6/0x5c0
[ 105.433644][ C2] ? br_device_event+0x627/0x800 [bridge]
[ 105.433675][ C2] do_softirq+0x4d/0xa0
[ 105.433678][ C2]
[ 105.433679][ C2]
[ 105.433681][ C2] __local_bh_enable_ip+0xf6/0x120
[ 105.433686][ C2] br_device_event+0x627/0x800 [bridge]
[ 105.433717][ C2] ? __pfx_br_device_event+0x10/0x10 [bridge]
[ 105.433748][ C2] ? packet_notifier+0x3b0/0x810
[ 105.433759][ C2] notifier_call_chain+0xcd/0x150
[ 105.433771][ C2] netdev_state_change+0xf5/0x120
[ 105.433776][ C2] ? __pfx_netdev_state_change+0x10/0x10
[ 105.433791][ C2] linkwatch_do_dev+0xd2/0x100
[ 105.433795][ C2] __linkwatch_run_queue+0x1df/0x650
[ 105.433803][ C2] ? __pfx___linkwatch_run_queue+0x10/0x10
[ 105.433809][ C2] ? lock_acquire+0x32/0xc0
[ 105.433819][ C2] linkwatch_event+0x40/0x60
[ 105.433822][ C2] process_one_work+0xe55/0x16d0
[ 105.433836][ C2] ? __pfx___lock_release+0x10/0x10
[ 105.433842][ C2] ? __pfx_process_one_work+0x10/0x10
[ 105.433855][ C2] ? assign_work+0x16c/0x240
[ 105.433866][ C2] worker_thread+0x58c/0xce0
[ 105.433880][ C2] ? __pfx_worker_thread+0x10/0x10
[ 105.433886][ C2] kthread+0x359/0x5d0
[ 105.433891][ C2] ? __pfx_kthread+0x10/0x10
[ 105.433900][ C2] ? __pfx_kthread+0x10/0x10
[ 105.433906][ C2] ret_from_fork+0x31/0x70
[ 105.433911][ C2] ? __pfx_kthread+0x10/0x10
[ 105.433914][ C2] ret_from_fork_asm+0x1a/0x30
[ 105.433935][ C2]
[ 105.514169][ T41] br0: port 2(veth2) entered blocking state
[ 105.514508][ T41] br0: port 2(veth2) entered forwarding state
[ 289.126911][ T2112] br0: port 2(veth2) entered disabled state
[ 289.217611][ T2113] br0: port 1(veth1) entered disabled state
[ 289.312729][ T2114] veth2: left allmulticast mode
[ 289.312997][ T2114] veth2: left promiscuous mode
[ 289.313343][ T2114] br0: port 2(veth2) entered disabled state
[ 289.315240][ T2114] veth1: left allmulticast mode
[ 289.316272][ T2114] veth1: left promiscuous mode
[ 289.316630][ T2114] br0: port 1(veth1) entered disabled state