[ 34.260720][ T495] br0: port 1(veth1) entered blocking state
[ 34.261221][ T495] br0: port 1(veth1) entered disabled state
[ 34.261502][ T495] veth1: entered allmulticast mode
[ 34.263801][ T495] veth1: entered promiscuous mode
[ 34.347560][ T497] br0: port 2(veth2) entered blocking state
[ 34.347867][ T497] br0: port 2(veth2) entered disabled state
[ 34.348489][ T497] veth2: entered allmulticast mode
[ 34.350494][ T497] veth2: entered promiscuous mode
[ 34.548515][ T41] br0: port 1(veth1) entered blocking state
[ 34.548988][ T41] br0: port 1(veth1) entered forwarding state
[ 34.550613][ C3]
[ 34.550822][ C3] =============================
[ 34.551020][ C3] WARNING: suspicious RCU usage
[ 34.551224][ C3] 6.14.0-rc6-virtme #1 Not tainted
[ 34.551424][ C3] -----------------------------
[ 34.551615][ C3] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 34.551939][ C3]
[ 34.551939][ C3] other info that might help us debug this:
[ 34.551939][ C3]
[ 34.552341][ C3]
[ 34.552341][ C3] rcu_scheduler_active = 2, debug_locks = 1
[ 34.552620][ C3] 6 locks held by kworker/u20:0/41:
[ 34.552841][ C3] #0: ffff8880010a9d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 34.553242][ C3] #1: ffffc900002dfd40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 34.553618][ C3] #2: ffffffffb99f0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
[ 34.553972][ C3] #3: ffffc900002a0d60 ((&pmctx->ip4_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 34.554372][ C3] #4: ffff8880102ab358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 34.554831][ C3] #5: ffffffffb915b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 34.555377][ C3]
[ 34.555377][ C3] stack backtrace:
[ 34.555622][ C3] CPU: 3 UID: 0 PID: 41 Comm: kworker/u20:0 Not tainted 6.14.0-rc6-virtme #1
[ 34.555627][ C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 34.555630][ C3] Workqueue: events_unbound linkwatch_event
[ 34.555636][ C3] Call Trace:
[ 34.555638][ C3]
[ 34.555642][ C3] dump_stack_lvl+0xb0/0xd0
[ 34.555652][ C3] lockdep_rcu_suspicious+0x1ea/0x280
[ 34.555664][ C3] dev_hard_start_xmit+0x2fc/0x3f0
[ 34.555676][ C3] __dev_queue_xmit+0xfaf/0x18d0
[ 34.555686][ C3] ? __build_skb_around+0x23d/0x350
[ 34.555698][ C3] ? __pfx___dev_queue_xmit+0x10/0x10
[ 34.555701][ C3] ? __pfx___alloc_skb+0x10/0x10
[ 34.555707][ C3] ? stack_trace_save+0x20/0xd0
[ 34.555714][ C3] ? __pfx_stack_trace_save+0x10/0x10
[ 34.555722][ C3] ? __pfx___br_multicast_query_handle_vlan+0x10/0x10 [bridge]
[ 34.555774][ C3] br_dev_queue_push_xmit+0x115/0x250 [bridge]
[ 34.555807][ C3] ? __pfx_br_dev_queue_push_xmit+0x10/0x10 [bridge]
[ 34.555840][ C3] ? br_multicast_count+0x42/0x130 [bridge]
[ 34.555880][ C3] __br_multicast_send_query+0x3b7/0x950 [bridge]
[ 34.555926][ C3] ? __pfx___br_multicast_send_query+0x10/0x10 [bridge]
[ 34.555966][ C3] ? __lock_acquire+0xb9a/0x1680
[ 34.555977][ C3] ? br_multicast_send_query+0x228/0x440 [bridge]
[ 34.556012][ C3] br_multicast_send_query+0x228/0x440 [bridge]
[ 34.556050][ C3] ? __pfx_br_multicast_send_query+0x10/0x10 [bridge]
[ 34.556083][ C3] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 34.556120][ C3] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 34.556156][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 34.556162][ C3] ? do_raw_spin_lock+0x131/0x270
[ 34.556167][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 34.556171][ C3] ? lock_acquire+0x32/0xc0
[ 34.556174][ C3] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 34.556215][ C3] ? br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 34.556248][ C3] br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 34.556284][ C3] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 34.556318][ C3] call_timer_fn+0x13b/0x230
[ 34.556322][ C3] ? call_timer_fn+0xe8/0x230
[ 34.556325][ C3] ? call_timer_fn+0xe8/0x230
[ 34.556329][ C3] ? __pfx_call_timer_fn+0x10/0x10
[ 34.556333][ C3] ? hlock_class+0x4e/0x130
[ 34.556342][ C3] ? mark_held_locks+0x9e/0xe0
[ 34.556354][ C3] __run_timers+0x545/0x810
[ 34.556358][ C3] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 34.556400][ C3] ? __pfx___run_timers+0x10/0x10
[ 34.556403][ C3] ? clockevents_program_event+0xf6/0x300
[ 34.556413][ C3] ? do_raw_spin_lock+0x131/0x270
[ 34.556417][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 34.556421][ C3] ? lock_acquire+0x32/0xc0
[ 34.556424][ C3] ? run_timer_softirq+0xe6/0x1c0
[ 34.556435][ C3] run_timer_softirq+0xee/0x1c0
[ 34.556440][ C3] handle_softirqs+0x1f6/0x5c0
[ 34.556454][ C3] __irq_exit_rcu+0xc4/0x100
[ 34.556458][ C3] irq_exit_rcu+0xe/0x20
[ 34.556460][ C3] sysvec_apic_timer_interrupt+0x78/0x90
[ 34.556466][ C3]
[ 34.556467][ C3]
[ 34.556469][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 34.556475][ C3] RIP: 0010:addrconf_init_auto_addrs+0x0/0x120
[ 34.556480][ C3] Code: 0f ff ff ff e8 81 39 1d fe e9 a5 fe ff ff e8 47 39 1d fe e9 48 ff ff ff 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fd 48 81 c7
[ 34.556483][ C3] RSP: 0018:ffffc900002dfa70 EFLAGS: 00000286
[ 34.556486][ C3] RAX: 0000000080000000 RBX: ffff88800adb2010 RCX: ffff88800adb2610
[ 34.556488][ C3] RDX: 0000000000000000 RSI: ffffffffb99f0a08 RDI: ffff8880084c9000
[ 34.556490][ C3] RBP: ffff8880084c9000 R08: 0000000000000000 R09: fffffbfff7372c32
[ 34.556492][ C3] R10: ffffffffb9b96197 R11: ffffed100130b4ac R12: ffffc900002dfb30
[ 34.556494][ C3] R13: ffff8880085e0800 R14: ffff88800adb2000 R15: ffffffffbbb3c5c0
[ 34.556512][ C3] addrconf_notify+0x96d/0xd50
[ 34.556521][ C3] notifier_call_chain+0xcd/0x150
[ 34.556535][ C3] netdev_state_change+0xf5/0x120
[ 34.556539][ C3] ? __pfx_netdev_state_change+0x10/0x10
[ 34.556555][ C3] linkwatch_do_dev+0xd2/0x100
[ 34.556559][ C3] __linkwatch_run_queue+0x1df/0x650
[ 34.556567][ C3] ? __pfx___linkwatch_run_queue+0x10/0x10
[ 34.556574][ C3] ? lock_acquire+0x32/0xc0
[ 34.556584][ C3] linkwatch_event+0x40/0x60
[ 34.556586][ C3] process_one_work+0xe55/0x16d0
[ 34.556600][ C3] ? __pfx___lock_release+0x10/0x10
[ 34.556606][ C3] ? __pfx_process_one_work+0x10/0x10
[ 34.556619][ C3] ? assign_work+0x16c/0x240
[ 34.556630][ C3] worker_thread+0x58c/0xce0
[ 34.556644][ C3] ? __pfx_worker_thread+0x10/0x10
[ 34.556651][ C3] kthread+0x359/0x5d0
[ 34.556655][ C3] ? __pfx_kthread+0x10/0x10
[ 34.556664][ C3] ? __pfx_kthread+0x10/0x10
[ 34.556670][ C3] ret_from_fork+0x31/0x70
[ 34.556676][ C3] ? __pfx_kthread+0x10/0x10
[ 34.556679][ C3] ret_from_fork_asm+0x1a/0x30
[ 34.556701][ C3]
[ 34.648011][ T38] br0: port 2(veth2) entered blocking state
[ 34.648323][ T38] br0: port 2(veth2) entered forwarding state
[ 45.883423][ T523] GACT probability NOT on
[ 220.285479][ T1820] br0: port 2(veth2) entered disabled state
[ 220.364502][ T1821] br0: port 1(veth1) entered disabled state
[ 220.450412][ T1822] veth2: left allmulticast mode
[ 220.450666][ T1822] veth2: left promiscuous mode
[ 220.450995][ T1822] br0: port 2(veth2) entered disabled state
[ 220.452983][ T1822] veth1: left allmulticast mode
[ 220.453422][ T1822] veth1: left promiscuous mode
[ 220.453735][ T1822] br0: port 1(veth1) entered disabled state