[ 11.498800][ T249] ip (249) used greatest stack depth: 24256 bytes left
[ 14.727707][ T301] br0: port 1(veth1) entered blocking state
[ 14.728205][ T301] br0: port 1(veth1) entered disabled state
[ 14.728610][ T301] veth1: entered allmulticast mode
[ 14.730589][ T301] veth1: entered promiscuous mode
[ 14.821034][ T303] br0: port 2(veth2) entered blocking state
[ 14.821370][ T303] br0: port 2(veth2) entered disabled state
[ 14.821651][ T303] veth2: entered allmulticast mode
[ 14.824165][ T303] veth2: entered promiscuous mode
[ 15.039397][ T45] br0: port 1(veth1) entered blocking state
[ 15.039923][ T45] br0: port 1(veth1) entered forwarding state
[ 15.041541][ C2]
[ 15.041984][ C2] =============================
[ 15.042406][ C2] WARNING: suspicious RCU usage
[ 15.042735][ C2] 6.14.0-rc6-virtme #1 Not tainted
[ 15.042962][ C2] -----------------------------
[ 15.043203][ C2] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 15.043625][ C2]
[ 15.043625][ C2] other info that might help us debug this:
[ 15.043625][ C2]
[ 15.044059][ C2]
[ 15.044059][ C2] rcu_scheduler_active = 2, debug_locks = 1
[ 15.044441][ C2] 6 locks held by kworker/u17:1/45:
[ 15.044683][ C2] #0: ffff8880010a9d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 15.045197][ C2] #1: ffffc9000031fd40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 15.045650][ C2] #2: ffffffff8e1f0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
[ 15.046071][ C2] #3: ffffc90000248d60 ((&pmctx->ip4_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 15.046550][ C2] #4: ffff88800a0bb358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 15.047096][ C2] #5: ffffffff8d95b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 15.047717][ C2]
[ 15.047717][ C2] stack backtrace:
[ 15.048001][ C2] CPU: 2 UID: 0 PID: 45 Comm: kworker/u17:1 Not tainted 6.14.0-rc6-virtme #1
[ 15.048007][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.048010][ C2] Workqueue: events_unbound linkwatch_event
[ 15.048019][ C2] Call Trace:
[ 15.048022][ C2]
[ 15.048025][ C2] dump_stack_lvl+0xb0/0xd0
[ 15.048035][ C2] lockdep_rcu_suspicious+0x1ea/0x280
[ 15.048050][ C2] dev_hard_start_xmit+0x2fc/0x3f0
[ 15.048063][ C2] __dev_queue_xmit+0xfaf/0x18d0
[ 15.048073][ C2] ? __build_skb_around+0x23d/0x350
[ 15.048085][ C2] ? __pfx___dev_queue_xmit+0x10/0x10
[ 15.048088][ C2] ? __pfx___alloc_skb+0x10/0x10
[ 15.048094][ C2] ? stack_trace_save+0x20/0xd0
[ 15.048101][ C2] ? __pfx_stack_trace_save+0x10/0x10
[ 15.048109][ C2] ? __pfx___br_multicast_query_handle_vlan+0x10/0x10 [bridge]
[ 15.048166][ C2] br_dev_queue_push_xmit+0x115/0x250 [bridge]
[ 15.048199][ C2] ? __pfx_br_dev_queue_push_xmit+0x10/0x10 [bridge]
[ 15.048231][ C2] ? br_multicast_count+0x42/0x130 [bridge]
[ 15.048286][ C2] __br_multicast_send_query+0x3b7/0x950 [bridge]
[ 15.048332][ C2] ? __pfx___br_multicast_send_query+0x10/0x10 [bridge]
[ 15.048373][ C2] ? __lock_acquire+0xb9a/0x1680
[ 15.048384][ C2] ? br_multicast_send_query+0x228/0x440 [bridge]
[ 15.048419][ C2] br_multicast_send_query+0x228/0x440 [bridge]
[ 15.048458][ C2] ? __pfx_br_multicast_send_query+0x10/0x10 [bridge]
[ 15.048491][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 15.048529][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 15.048564][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 15.048570][ C2] ? do_raw_spin_lock+0x131/0x270
[ 15.048575][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 15.048579][ C2] ? lock_acquire+0x32/0xc0
[ 15.048582][ C2] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 15.048623][ C2] ? br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 15.048657][ C2] br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 15.048694][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 15.048727][ C2] call_timer_fn+0x13b/0x230
[ 15.048732][ C2] ? call_timer_fn+0xe8/0x230
[ 15.048735][ C2] ? call_timer_fn+0xe8/0x230
[ 15.048739][ C2] ? __pfx_call_timer_fn+0x10/0x10
[ 15.048743][ C2] ? hlock_class+0x4e/0x130
[ 15.048752][ C2] ? mark_held_locks+0x9e/0xe0
[ 15.048764][ C2] __run_timers+0x545/0x810
[ 15.048768][ C2] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 15.048810][ C2] ? __pfx___run_timers+0x10/0x10
[ 15.048813][ C2] ? clockevents_program_event+0xf6/0x300
[ 15.048823][ C2] ? do_raw_spin_lock+0x131/0x270
[ 15.048827][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 15.048831][ C2] ? lock_acquire+0x32/0xc0
[ 15.048834][ C2] ? run_timer_softirq+0xe6/0x1c0
[ 15.048845][ C2] run_timer_softirq+0xee/0x1c0
[ 15.048850][ C2] handle_softirqs+0x1f6/0x5c0
[ 15.048858][ C2] ? do_raw_spin_unlock+0x58/0x220
[ 15.048866][ C2] __irq_exit_rcu+0xc4/0x100
[ 15.048870][ C2] irq_exit_rcu+0xe/0x20
[ 15.048873][ C2] sysvec_apic_timer_interrupt+0x78/0x90
[ 15.048878][ C2]
[ 15.048879][ C2]
[ 15.048881][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 15.048886][ C2] RIP: 0010:unwind_get_return_address+0x77/0xa0
[ 15.048891][ C2] Code: ea 03 80 3c 02 00 75 36 48 8b 7b 58 e8 d2 dc 0d 00 85 c0 74 cf 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 <75> 1c 48 8b 43 58 5b 5d c3 cc cc cc cc e8 67 e1 8c 00 eb a0 48 89
[ 15.048893][ C2] RSP: 0018:ffffc9000031f1d0 EFLAGS: 00000246
[ 15.048897][ C2] RAX: dffffc0000000000 RBX: ffffc9000031f1e8 RCX: 1ffffffff1cf4801
[ 15.048899][ C2] RDX: 1ffff92000063e48 RSI: 0000000000000004 RDI: ffffffff8a8c76c4
[ 15.048900][ C2] RBP: ffffc9000031f240 R08: ffffc9000031f228 R09: fffff52000063e26
[ 15.048902][ C2] R10: ffffc9000031f1e8 R11: ffffc9000031f229 R12: ffffc9000031f2b0
[ 15.048903][ C2] R13: 0000000000000000 R14: ffff8880021645c0 R15: 0000000000092cc0
[ 15.048916][ C2] ? kasan_save_stack+0x24/0x50
[ 15.048926][ C2] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 15.048930][ C2] arch_stack_walk+0xa2/0xf0
[ 15.048944][ C2] ? kasan_save_stack+0x24/0x50
[ 15.048953][ C2] stack_trace_save+0x94/0xd0
[ 15.048957][ C2] ? __pfx_stack_trace_save+0x10/0x10
[ 15.048965][ C2] ? find_held_lock+0x2c/0x110
[ 15.048973][ C2] kasan_save_stack+0x24/0x50
[ 15.048976][ C2] ? get_partial_node.part.0+0x1c2/0x3b0
[ 15.048984][ C2] ? __pfx___lock_release+0x10/0x10
[ 15.048989][ C2] ? hlock_class+0x4e/0x130
[ 15.048992][ C2] ? mark_lock+0x38/0x3e0
[ 15.049000][ C2] ? mark_held_locks+0x9e/0xe0
[ 15.049007][ C2] ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 15.049015][ C2] ? get_partial_node.part.0+0x1c2/0x3b0
[ 15.049027][ C2] ? __alloc_object+0x2f/0x270
[ 15.049033][ C2] ? ___slab_alloc+0x4b8/0xee0
[ 15.049037][ C2] ? __lock_release+0x103/0x460
[ 15.049039][ C2] ? __alloc_object+0x2f/0x270
[ 15.049044][ C2] ? get_any_partial+0x201/0x260
[ 15.049059][ C2] kasan_save_track+0x14/0x30
[ 15.049063][ C2] __kasan_slab_alloc+0x59/0x70
[ 15.049070][ C2] kmem_cache_alloc_noprof+0x10b/0x350
[ 15.049075][ C2] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 15.049086][ C2] __alloc_object+0x2f/0x270
[ 15.049091][ C2] __create_object+0x22/0xb0
[ 15.049098][ C2] pcpu_alloc_noprof+0x4ad/0xab0
[ 15.049118][ C2] fib6_nh_init+0x2b6/0x16f0
[ 15.049130][ C2] ? __pfx_fib6_nh_init+0x10/0x10
[ 15.049136][ C2] ? trace_kmalloc+0x2d/0xe0
[ 15.049140][ C2] ? __kmalloc_noprof+0x1f2/0x490
[ 15.049153][ C2] ip6_route_info_create+0xf2c/0x17d0
[ 15.049165][ C2] ? __pfx_ip6_route_info_create+0x10/0x10
[ 15.049180][ C2] ip6_route_add+0x1c/0x140
[ 15.049187][ C2] addrconf_add_mroute+0x1ac/0x2c0
[ 15.049193][ C2] ? __pfx_addrconf_add_mroute+0x10/0x10
[ 15.049229][ C2] addrconf_add_dev+0xe1/0x170
[ 15.049234][ C2] addrconf_dev_config+0x12f/0x2c0
[ 15.049240][ C2] addrconf_notify+0x96d/0xd50
[ 15.049255][ C2] notifier_call_chain+0xcd/0x150
[ 15.049273][ C2] netdev_state_change+0xf5/0x120
[ 15.049280][ C2] ? __pfx_netdev_state_change+0x10/0x10
[ 15.049295][ C2] linkwatch_do_dev+0xd2/0x100
[ 15.049300][ C2] __linkwatch_run_queue+0x1df/0x650
[ 15.049308][ C2] ? __pfx___linkwatch_run_queue+0x10/0x10
[ 15.049314][ C2] ? lock_acquire+0x32/0xc0
[ 15.049325][ C2] linkwatch_event+0x40/0x60
[ 15.049327][ C2] process_one_work+0xe55/0x16d0
[ 15.049343][ C2] ? __pfx___lock_release+0x10/0x10
[ 15.049349][ C2] ? __pfx_process_one_work+0x10/0x10
[ 15.049362][ C2] ? assign_work+0x16c/0x240
[ 15.049373][ C2] worker_thread+0x58c/0xce0
[ 15.049387][ C2] ? __pfx_worker_thread+0x10/0x10
[ 15.049393][ C2] kthread+0x359/0x5d0
[ 15.049399][ C2] ? __pfx_kthread+0x10/0x10
[ 15.049408][ C2] ? __pfx_kthread+0x10/0x10
[ 15.049414][ C2] ret_from_fork+0x31/0x70
[ 15.049420][ C2] ? __pfx_kthread+0x10/0x10
[ 15.049424][ C2] ret_from_fork_asm+0x1a/0x30
[ 15.049445][ C2]
[ 15.156036][ T45] br0: port 2(veth2) entered blocking state
[ 15.156501][ T45] br0: port 2(veth2) entered forwarding state
[ 26.703113][ T331] GACT probability NOT on
[ 206.862780][ T1629] br0: port 2(veth2) entered disabled state
[ 206.976964][ T1630] br0: port 1(veth1) entered disabled state
[ 207.057683][ T1631] veth2: left allmulticast mode
[ 207.057933][ T1631] veth2: left promiscuous mode
[ 207.059553][ T1631] br0: port 2(veth2) entered disabled state
[ 207.061269][ T1631] veth1: left allmulticast mode
[ 207.061527][ T1631] veth1: left promiscuous mode
[ 207.061835][ T1631] br0: port 1(veth1) entered disabled state
[ 207.159716][ T1631] ip (1631) used greatest stack depth: 23144 bytes left