[ 14.525348][ T299] br0: port 1(veth1) entered blocking state
[ 14.526391][ T299] br0: port 1(veth1) entered disabled state
[ 14.526879][ T299] veth1: entered allmulticast mode
[ 14.529219][ T299] veth1: entered promiscuous mode
[ 14.539435][ T299] ip (299) used greatest stack depth: 24048 bytes left
[ 14.611927][ T301] br0: port 2(veth2) entered blocking state
[ 14.612257][ T301] br0: port 2(veth2) entered disabled state
[ 14.612617][ T301] veth2: entered allmulticast mode
[ 14.615254][ T301] veth2: entered promiscuous mode
[ 14.810502][ T57] br0: port 1(veth1) entered blocking state
[ 14.811021][ T57] br0: port 1(veth1) entered forwarding state
[ 14.812127][ C2]
[ 14.812396][ C2] =============================
[ 14.812614][ C2] WARNING: suspicious RCU usage
[ 14.812852][ C2] 6.14.0-rc6-virtme #1 Not tainted
[ 14.813083][ C2] -----------------------------
[ 14.813298][ C2] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 14.813659][ C2]
[ 14.813659][ C2] other info that might help us debug this:
[ 14.813659][ C2]
[ 14.814140][ C2]
[ 14.814140][ C2] rcu_scheduler_active = 2, debug_locks = 1
[ 14.814495][ C2] 8 locks held by kworker/u19:1/57:
[ 14.814741][ C2] #0: ffff8880010a9d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 14.815267][ C2] #1: ffffc900003dfd40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 14.815736][ C2] #2: ffffffffa9bf0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
[ 14.816163][ C2] #3: ffffffffa951dd60 (fs_reclaim){+.+.}-{0:0}, at: __kmalloc_node_track_caller_noprof+0xb9/0x4a0
[ 14.816643][ C2] #4: ffffffffa95432e0 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fs_reclaim_acquire+0xb3/0x150
[ 14.817241][ C2] #5: ffffc90000248d60 ((&pmctx->ip4_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 14.817896][ C2] #6: ffff88800badb358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 14.818479][ C2] #7: ffffffffa935b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 14.818920][ C2]
[ 14.818920][ C2] stack backtrace:
[ 14.819226][ C2] CPU: 2 UID: 0 PID: 57 Comm: kworker/u19:1 Not tainted 6.14.0-rc6-virtme #1
[ 14.819232][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 14.819234][ C2] Workqueue: events_unbound linkwatch_event
[ 14.819241][ C2] Call Trace:
[ 14.819243][ C2]
[ 14.819246][ C2] dump_stack_lvl+0xb0/0xd0
[ 14.819253][ C2] lockdep_rcu_suspicious+0x1ea/0x280
[ 14.819264][ C2] dev_hard_start_xmit+0x2fc/0x3f0
[ 14.819276][ C2] __dev_queue_xmit+0xfaf/0x18d0
[ 14.819290][ C2] ? __build_skb_around+0x23d/0x350
[ 14.819304][ C2] ? __pfx___dev_queue_xmit+0x10/0x10
[ 14.819310][ C2] ? __pfx___alloc_skb+0x10/0x10
[ 14.819320][ C2] ? stack_trace_save+0x20/0xd0
[ 14.819326][ C2] ? __pfx_stack_trace_save+0x10/0x10
[ 14.819334][ C2] ? __pfx___br_multicast_query_handle_vlan+0x10/0x10 [bridge]
[ 14.819395][ C2] br_dev_queue_push_xmit+0x115/0x250 [bridge]
[ 14.819433][ C2] ? __pfx_br_dev_queue_push_xmit+0x10/0x10 [bridge]
[ 14.819489][ C2] ? br_multicast_count+0x42/0x130 [bridge]
[ 14.819534][ C2] __br_multicast_send_query+0x3b7/0x950 [bridge]
[ 14.819586][ C2] ? __pfx___br_multicast_send_query+0x10/0x10 [bridge]
[ 14.819637][ C2] ? __lock_acquire+0xb9a/0x1680
[ 14.819654][ C2] ? br_multicast_send_query+0x228/0x440 [bridge]
[ 14.819700][ C2] br_multicast_send_query+0x228/0x440 [bridge]
[ 14.819754][ C2] ? __pfx_br_multicast_send_query+0x10/0x10 [bridge]
[ 14.819790][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 14.819828][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 14.819862][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 14.819869][ C2] ? do_raw_spin_lock+0x131/0x270
[ 14.819874][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 14.819878][ C2] ? lock_acquire+0x32/0xc0
[ 14.819881][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 14.819921][ C2] ? br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 14.819954][ C2] br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 14.819991][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 14.820024][ C2] call_timer_fn+0x13b/0x230
[ 14.820029][ C2] ? call_timer_fn+0xe8/0x230
[ 14.820031][ C2] ? call_timer_fn+0xe8/0x230
[ 14.820036][ C2] ? __pfx_call_timer_fn+0x10/0x10
[ 14.820039][ C2] ? hlock_class+0x4e/0x130
[ 14.820049][ C2] ? mark_held_locks+0x9e/0xe0
[ 14.820061][ C2] __run_timers+0x545/0x810
[ 14.820065][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 14.820110][ C2] ? __pfx___run_timers+0x10/0x10
[ 14.820114][ C2] ? clockevents_program_event+0xf6/0x300
[ 14.820129][ C2] ? do_raw_spin_lock+0x131/0x270
[ 14.820137][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 14.820143][ C2] ? lock_acquire+0x32/0xc0
[ 14.820146][ C2] ? run_timer_softirq+0xe6/0x1c0
[ 14.820162][ C2] run_timer_softirq+0xee/0x1c0
[ 14.820170][ C2] handle_softirqs+0x1f6/0x5c0
[ 14.820191][ C2] __irq_exit_rcu+0xc4/0x100
[ 14.820198][ C2] irq_exit_rcu+0xe/0x20
[ 14.820201][ C2] sysvec_apic_timer_interrupt+0x78/0x90
[ 14.820210][ C2]
[ 14.820211][ C2]
[ 14.820215][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 14.820223][ C2] RIP: 0010:lock_acquire.part.0+0x119/0x330
[ 14.820229][ C2] Code: ff 48 83 c4 28 65 0f c1 05 f4 91 46 5a 83 f8 01 0f 85 b5 01 00 00 9c 58 f6 c4 02 0f 85 be 01 00 00 48 85 ed 0f 85 9b 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7
[ 14.820233][ C2] RSP: 0018:ffffc900003df7d8 EFLAGS: 00000206
[ 14.820237][ C2] RAX: 0000000000000046 RBX: 1ffff9200007befe RCX: 0000000000000001
[ 14.820239][ C2] RDX: 1ffff11000994a00 RSI: 00000000ffffffff RDI: ffff888004ca50ca
[ 14.820240][ C2] RBP: 0000000000000200 R08: 0000000000000001 R09: fffffbfff5685be2
[ 14.820242][ C2] R10: ffffffffab42df17 R11: ffff888004ca45c0 R12: ffffffffa95432e0
[ 14.820244][ C2] R13: ffff8880010433c0 R14: 00000000ffffffff R15: 0000000000001000
[ 14.820263][ C2] ? __lock_release+0x103/0x460
[ 14.820266][ C2] ? __create_object+0x5e/0xb0
[ 14.820272][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 14.820277][ C2] ? trace_lock_acquire+0x14c/0x1f0
[ 14.820280][ C2] ? mark_lock+0x38/0x3e0
[ 14.820288][ C2] ? lock_acquire+0x32/0xc0
[ 14.820291][ C2] ? fs_reclaim_acquire+0xb3/0x150
[ 14.820296][ C2] ? fs_reclaim_acquire+0xb3/0x150
[ 14.820300][ C2] ? fs_reclaim_acquire+0xb3/0x150
[ 14.820304][ C2] fs_reclaim_acquire+0xcf/0x150
[ 14.820306][ C2] ? fs_reclaim_acquire+0xb3/0x150
[ 14.820310][ C2] __kmalloc_node_track_caller_noprof+0xb9/0x4a0
[ 14.820315][ C2] ? __create_object+0x5e/0xb0
[ 14.820320][ C2] ? __alloc_skb+0x111/0x2e0
[ 14.820328][ C2] kmalloc_reserve+0xbc/0x240
[ 14.820337][ C2] __alloc_skb+0x111/0x2e0
[ 14.820342][ C2] ? __pfx___alloc_skb+0x10/0x10
[ 14.820349][ C2] ? rtnl_prop_list_size+0x245/0x290
[ 14.820357][ C2] ? if_nlmsg_size+0x350/0x8c0
[ 14.820366][ C2] rtmsg_ifinfo_build_skb+0x79/0x230
[ 14.820376][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120
[ 14.820385][ C2] rtmsg_ifinfo+0x5b/0xa0
[ 14.820394][ C2] netdev_state_change+0x10f/0x120
[ 14.820399][ C2] ? __pfx_netdev_state_change+0x10/0x10
[ 14.820414][ C2] linkwatch_do_dev+0xd2/0x100
[ 14.820419][ C2] __linkwatch_run_queue+0x1df/0x650
[ 14.820426][ C2] ? __pfx___linkwatch_run_queue+0x10/0x10
[ 14.820433][ C2] ? lock_acquire+0x32/0xc0
[ 14.820443][ C2] linkwatch_event+0x40/0x60
[ 14.820446][ C2] process_one_work+0xe55/0x16d0
[ 14.820460][ C2] ? __pfx___lock_release+0x10/0x10
[ 14.820465][ C2] ? __pfx_process_one_work+0x10/0x10
[ 14.820479][ C2] ? assign_work+0x16c/0x240
[ 14.820489][ C2] worker_thread+0x58c/0xce0
[ 14.820503][ C2] ? __pfx_worker_thread+0x10/0x10
[ 14.820510][ C2] kthread+0x359/0x5d0
[ 14.820515][ C2] ? __pfx_kthread+0x10/0x10
[ 14.820524][ C2] ? __pfx_kthread+0x10/0x10
[ 14.820530][ C2] ret_from_fork+0x31/0x70
[ 14.820535][ C2] ? __pfx_kthread+0x10/0x10
[ 14.820538][ C2] ret_from_fork_asm+0x1a/0x30
[ 14.820559][ C2]
[ 14.889441][ T57] br0: port 2(veth2) entered blocking state
[ 14.889754][ T57] br0: port 2(veth2) entered forwarding state
[ 28.752507][ T353] GACT probability NOT on
[ 198.102860][ T1590] br0: port 2(veth2) entered disabled state
[ 198.192506][ T1591] br0: port 1(veth1) entered disabled state
[ 198.285126][ T1592] veth2: left allmulticast mode
[ 198.285481][ T1592] veth2: left promiscuous mode
[ 198.285850][ T1592] br0: port 2(veth2) entered disabled state
[ 198.287527][ T1592] veth1: left allmulticast mode
[ 198.287756][ T1592] veth1: left promiscuous mode
[ 198.288346][ T1592] br0: port 1(veth1) entered disabled state