[ 13.630363][ T302] br0: port 1(veth1) entered blocking state
[ 13.630864][ T302] br0: port 1(veth1) entered disabled state
[ 13.631291][ T302] veth1: entered allmulticast mode
[ 13.633805][ T302] veth1: entered promiscuous mode
[ 13.708389][ T304] br0: port 2(veth2) entered blocking state
[ 13.708954][ T304] br0: port 2(veth2) entered disabled state
[ 13.710254][ T304] veth2: entered allmulticast mode
[ 13.713734][ T304] veth2: entered promiscuous mode
[ 13.906903][ T40] br0: port 1(veth1) entered blocking state
[ 13.907356][ T40] br0: port 1(veth1) entered forwarding state
[ 13.908573][ C2]
[ 13.908823][ C2] =============================
[ 13.909065][ C2] WARNING: suspicious RCU usage
[ 13.909298][ C2] 6.14.0-rc6-virtme #1 Not tainted
[ 13.909521][ C2] -----------------------------
[ 13.909732][ C2] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 13.910082][ C2]
[ 13.910082][ C2] other info that might help us debug this:
[ 13.910082][ C2]
[ 13.910491][ C2]
[ 13.910491][ C2] rcu_scheduler_active = 2, debug_locks = 1
[ 13.910789][ C2] 6 locks held by kworker/u19:0/40:
[ 13.911184][ C2] #0: ffff8880010a9d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 13.911601][ C2] #1: ffffc900002cfd40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 13.912003][ C2] #2: ffffffff9adf0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
[ 13.912364][ C2] #3: ffffc90000248d78 ((&pmctx->ip4_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 13.912766][ C2] #4: ffff88800be2b358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 13.913263][ C2] #5: ffffffff9a55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 13.913618][ C2]
[ 13.913618][ C2] stack backtrace:
[ 13.913873][ C2] CPU: 2 UID: 0 PID: 40 Comm: kworker/u19:0 Not tainted 6.14.0-rc6-virtme #1
[ 13.913878][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 13.913880][ C2] Workqueue: events_unbound linkwatch_event
[ 13.913885][ C2] Call Trace:
[ 13.913888][ C2]
[ 13.913891][ C2] dump_stack_lvl+0xb0/0xd0
[ 13.913900][ C2] lockdep_rcu_suspicious+0x1ea/0x280
[ 13.913912][ C2] dev_hard_start_xmit+0x2fc/0x3f0
[ 13.913923][ C2] __dev_queue_xmit+0xfaf/0x18d0
[ 13.913934][ C2] ? __build_skb_around+0x23d/0x350
[ 13.913946][ C2] ? __pfx___dev_queue_xmit+0x10/0x10
[ 13.913949][ C2] ? __pfx___alloc_skb+0x10/0x10
[ 13.913956][ C2] ? stack_trace_save+0x94/0xd0
[ 13.913962][ C2] ? __pfx_stack_trace_save+0x10/0x10
[ 13.913969][ C2] ? __pfx___br_multicast_query_handle_vlan+0x10/0x10 [bridge]
[ 13.914021][ C2] br_dev_queue_push_xmit+0x115/0x250 [bridge]
[ 13.914055][ C2] ? __pfx_br_dev_queue_push_xmit+0x10/0x10 [bridge]
[ 13.914088][ C2] ? br_multicast_count+0x42/0x130 [bridge]
[ 13.914128][ C2] __br_multicast_send_query+0x3b7/0x950 [bridge]
[ 13.914173][ C2] ? __pfx___br_multicast_send_query+0x10/0x10 [bridge]
[ 13.914216][ C2] ? __lock_acquire+0xb9a/0x1680
[ 13.914226][ C2] ? br_multicast_send_query+0x228/0x440 [bridge]
[ 13.914261][ C2] br_multicast_send_query+0x228/0x440 [bridge]
[ 13.914300][ C2] ? __pfx_br_multicast_send_query+0x10/0x10 [bridge]
[ 13.914334][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 13.914372][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 13.914407][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 13.914413][ C2] ? do_raw_spin_lock+0x131/0x270
[ 13.914418][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 13.914422][ C2] ? lock_acquire+0x32/0xc0
[ 13.914425][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 13.914466][ C2] ? br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 13.914499][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 13.914533][ C2] br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 13.914570][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 13.914605][ C2] call_timer_fn+0x13b/0x230
[ 13.914608][ C2] ? call_timer_fn+0xe8/0x230
[ 13.914611][ C2] ? call_timer_fn+0xe8/0x230
[ 13.914615][ C2] ? __pfx_call_timer_fn+0x10/0x10
[ 13.914619][ C2] ? hlock_class+0x4e/0x130
[ 13.914628][ C2] ? mark_held_locks+0x9e/0xe0
[ 13.914641][ C2] __run_timers+0x545/0x810
[ 13.914645][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 13.914688][ C2] ? __pfx___run_timers+0x10/0x10
[ 13.914697][ C2] ? do_raw_spin_lock+0x131/0x270
[ 13.914702][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 13.914706][ C2] ? lock_acquire+0x32/0xc0
[ 13.914709][ C2] ? run_timer_softirq+0xe6/0x1c0
[ 13.914720][ C2] run_timer_softirq+0xee/0x1c0
[ 13.914725][ C2] handle_softirqs+0x1f6/0x5c0
[ 13.914735][ C2] ? br_device_event+0x627/0x800 [bridge]
[ 13.914766][ C2] do_softirq+0x4d/0xa0
[ 13.914770][ C2]
[ 13.914771][ C2]
[ 13.914774][ C2] __local_bh_enable_ip+0xf6/0x120
[ 13.914778][ C2] br_device_event+0x627/0x800 [bridge]
[ 13.914809][ C2] ? __pfx_br_device_event+0x10/0x10 [bridge]
[ 13.914841][ C2] ? packet_notifier+0x3b0/0x810
[ 13.914852][ C2] notifier_call_chain+0xcd/0x150
[ 13.914865][ C2] netdev_state_change+0xf5/0x120
[ 13.914869][ C2] ? __pfx_netdev_state_change+0x10/0x10
[ 13.914884][ C2] linkwatch_do_dev+0xd2/0x100
[ 13.914889][ C2] __linkwatch_run_queue+0x1df/0x650
[ 13.914896][ C2] ? __pfx___linkwatch_run_queue+0x10/0x10
[ 13.914903][ C2] ? lock_acquire+0x32/0xc0
[ 13.914913][ C2] linkwatch_event+0x40/0x60
[ 13.914916][ C2] process_one_work+0xe55/0x16d0
[ 13.914929][ C2] ? __pfx___lock_release+0x10/0x10
[ 13.914935][ C2] ? __pfx_process_one_work+0x10/0x10
[ 13.914948][ C2] ? assign_work+0x16c/0x240
[ 13.914958][ C2] worker_thread+0x58c/0xce0
[ 13.914973][ C2] ? __pfx_worker_thread+0x10/0x10
[ 13.914979][ C2] kthread+0x359/0x5d0
[ 13.914984][ C2] ? __pfx_kthread+0x10/0x10
[ 13.914993][ C2] ? __pfx_kthread+0x10/0x10
[ 13.914999][ C2] ret_from_fork+0x31/0x70
[ 13.915004][ C2] ? __pfx_kthread+0x10/0x10
[ 13.915007][ C2] ret_from_fork_asm+0x1a/0x30
[ 13.915028][ C2]
[ 24.304099][ T56] br0: port 2(veth2) entered blocking state
[ 24.304428][ T56] br0: port 2(veth2) entered forwarding state
[ 29.907930][ T322] GACT probability NOT on
[ 31.555952][ T329] br0: port 2(veth2) entered disabled state
[ 31.808712][ T46] br0: port 2(veth2) entered blocking state
[ 31.809005][ T46] br0: port 2(veth2) entered forwarding state
[ 38.883429][ T352] br0: port 1(veth1) entered disabled state
[ 38.975050][ T353] br0: port 2(veth2) entered disabled state
[ 39.051502][ T354] veth2: left allmulticast mode
[ 39.051790][ T354] veth2: left promiscuous mode
[ 39.052512][ T354] br0: port 2(veth2) entered disabled state
[ 39.054338][ T354] veth1: left allmulticast mode
[ 39.054855][ T354] veth1: left promiscuous mode
[ 39.055207][ T354] br0: port 1(veth1) entered disabled state