[ 1350.354815][T17922] br0: port 1(veth1) entered blocking state
[ 1350.355155][T17922] br0: port 1(veth1) entered disabled state
[ 1350.355475][T17922] veth1: entered allmulticast mode
[ 1350.358576][T17922] veth1: entered promiscuous mode
[ 1350.443787][T17924] br0: port 2(veth2) entered blocking state
[ 1350.444107][T17924] br0: port 2(veth2) entered disabled state
[ 1350.444425][T17924] veth2: entered allmulticast mode
[ 1350.447022][T17924] veth2: entered promiscuous mode
[ 1350.608624][ T57] br0: port 1(veth1) entered blocking state
[ 1350.608890][ T57] br0: port 1(veth1) entered forwarding state
[ 1350.611413][ C1]
[ 1350.611673][ C1] =============================
[ 1350.611884][ C1] WARNING: suspicious RCU usage
[ 1350.612100][ C1] 6.14.0-rc6-virtme #1 Not tainted
[ 1350.612309][ C1] -----------------------------
[ 1350.612512][ C1] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 1350.612852][ C1]
[ 1350.612852][ C1] other info that might help us debug this:
[ 1350.612852][ C1]
[ 1350.613260][ C1]
[ 1350.613260][ C1] rcu_scheduler_active = 2, debug_locks = 1
[ 1350.613564][ C1] 6 locks held by kworker/u19:1/57:
[ 1350.613766][ C1] #0: ffff8880010a9d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 1350.614212][ C1] #1: ffffc900003dfd40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 1350.614609][ C1] #2: ffffffffb0bf0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
[ 1350.614959][ C1] #3: ffffc900001f0d60 ((&pmctx->ip4_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 1350.615377][ C1] #4: ffff8880136bb358 (&br->multicast_lock){+.-.}-{3:3}, at: br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 1350.615862][ C1] #5: ffffffffb035b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 1350.616229][ C1]
[ 1350.616229][ C1] stack backtrace:
[ 1350.616476][ C1] CPU: 1 UID: 0 PID: 57 Comm: kworker/u19:1 Not tainted 6.14.0-rc6-virtme #1
[ 1350.616480][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1350.616483][ C1] Workqueue: events_unbound linkwatch_event
[ 1350.616487][ C1] Call Trace:
[ 1350.616489][ C1]
[ 1350.616492][ C1] dump_stack_lvl+0xb0/0xd0
[ 1350.616500][ C1] lockdep_rcu_suspicious+0x1ea/0x280
[ 1350.616510][ C1] dev_hard_start_xmit+0x2fc/0x3f0
[ 1350.616521][ C1] __dev_queue_xmit+0xfaf/0x18d0
[ 1350.616532][ C1] ? __build_skb_around+0x23d/0x350
[ 1350.616542][ C1] ? __pfx___dev_queue_xmit+0x10/0x10
[ 1350.616545][ C1] ? __pfx___alloc_skb+0x10/0x10
[ 1350.616548][ C1] ? __pfx___lock_release+0x10/0x10
[ 1350.616558][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 1350.616564][ C1] ? __pfx___br_multicast_query_handle_vlan+0x10/0x10 [bridge]
[ 1350.616615][ C1] br_dev_queue_push_xmit+0x115/0x250 [bridge]
[ 1350.616645][ C1] ? hlock_class+0x10/0x130
[ 1350.616649][ C1] ? __pfx_br_dev_queue_push_xmit+0x10/0x10 [bridge]
[ 1350.616682][ C1] ? br_multicast_count+0x42/0x130 [bridge]
[ 1350.616721][ C1] __br_multicast_send_query+0x3b7/0x950 [bridge]
[ 1350.616766][ C1] ? __pfx___br_multicast_send_query+0x10/0x10 [bridge]
[ 1350.616806][ C1] ? __lock_acquire+0xb9a/0x1680
[ 1350.616817][ C1] ? br_multicast_send_query+0x228/0x440 [bridge]
[ 1350.616851][ C1] br_multicast_send_query+0x228/0x440 [bridge]
[ 1350.616890][ C1] ? __pfx_br_multicast_send_query+0x10/0x10 [bridge]
[ 1350.616923][ C1] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 1350.616960][ C1] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 1350.616997][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1350.617003][ C1] ? do_raw_spin_lock+0x131/0x270
[ 1350.617008][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 1350.617012][ C1] ? lock_acquire+0x32/0xc0
[ 1350.617015][ C1] ? br_multicast_port_query_expired+0x62/0x2c0 [bridge]
[ 1350.617056][ C1] ? br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 1350.617089][ C1] br_multicast_port_query_expired+0x230/0x2c0 [bridge]
[ 1350.617125][ C1] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 1350.617159][ C1] call_timer_fn+0x13b/0x230
[ 1350.617163][ C1] ? call_timer_fn+0xe8/0x230
[ 1350.617165][ C1] ? call_timer_fn+0xe8/0x230
[ 1350.617170][ C1] ? __pfx_call_timer_fn+0x10/0x10
[ 1350.617173][ C1] ? hlock_class+0x4e/0x130
[ 1350.617182][ C1] ? mark_held_locks+0x9e/0xe0
[ 1350.617194][ C1] __run_timers+0x545/0x810
[ 1350.617198][ C1] ? __pfx_br_ip4_multicast_port_query_expired+0x10/0x10 [bridge]
[ 1350.617240][ C1] ? __pfx___run_timers+0x10/0x10
[ 1350.617243][ C1] ? clockevents_program_event+0xf6/0x300
[ 1350.617253][ C1] ? do_raw_spin_lock+0x131/0x270
[ 1350.617257][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 1350.617261][ C1] ? lock_acquire+0x32/0xc0
[ 1350.617264][ C1] ? run_timer_softirq+0xe6/0x1c0
[ 1350.617275][ C1] run_timer_softirq+0xee/0x1c0
[ 1350.617280][ C1] handle_softirqs+0x1f6/0x5c0
[ 1350.617293][ C1] __irq_exit_rcu+0xc4/0x100
[ 1350.617296][ C1] irq_exit_rcu+0xe/0x20
[ 1350.617299][ C1] sysvec_apic_timer_interrupt+0x78/0x90
[ 1350.617303][ C1]
[ 1350.617304][ C1]
[ 1350.617307][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 1350.617311][ C1] RIP: 0010:__orc_find+0x5/0xf0
[ 1350.617315][ C1] Code: 90 90 90 90 90 48 8b 07 c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 <41> 57 41 56 41 55 49 89 cd 89 d1 41 54 4c 8d 64 8f fc 55 53 48 83
[ 1350.617318][ C1] RSP: 0018:ffffc900003df4a0 EFLAGS: 00000286
[ 1350.617321][ C1] RAX: 0000000000002a78 RBX: 0000000000000001 RCX: ffffffffac6afa79
[ 1350.617323][ C1] RDX: 0000000000000015 RSI: ffffffffb10f9de0 RDI: ffffffffb0de08ac
[ 1350.617324][ C1] RBP: ffffc900003df600 R08: ffffc900003df5e8 R09: 1ffff9200007be9e
[ 1350.617326][ C1] R10: ffffc900003df5a8 R11: ffffc900003df5e9 R12: 1ffff9200007be9e
[ 1350.617328][ C1] R13: ffffc900003df5a8 R14: 0000000000000000 R15: ffff8880019759c0
[ 1350.617338][ C1] ? ret_from_fork_asm+0x19/0x30
[ 1350.617348][ C1] unwind_next_frame+0x1d2/0x1d00
[ 1350.617352][ C1] ? ret_from_fork_asm+0x1a/0x30
[ 1350.617361][ C1] ? __pfx_unwind_next_frame+0x10/0x10
[ 1350.617370][ C1] ? ret_from_fork_asm+0x1a/0x30
[ 1350.617373][ C1] ? kernel_text_address+0x17/0xe0
[ 1350.617377][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 1350.617385][ C1] arch_stack_walk+0x8c/0xf0
[ 1350.617397][ C1] ? ret_from_fork_asm+0x1a/0x30
[ 1350.617405][ C1] stack_trace_save+0x94/0xd0
[ 1350.617410][ C1] ? __pfx_stack_trace_save+0x10/0x10
[ 1350.617423][ C1] kasan_save_stack+0x24/0x50
[ 1350.617428][ C1] ? kasan_save_stack+0x24/0x50
[ 1350.617431][ C1] ? kasan_save_track+0x14/0x30
[ 1350.617434][ C1] ? __kasan_slab_alloc+0x59/0x70
[ 1350.617437][ C1] ? kmem_cache_alloc_node_noprof+0x110/0x360
[ 1350.617442][ C1] ? __alloc_skb+0x215/0x2e0
[ 1350.617444][ C1] ? inet6_ifinfo_notify+0x7b/0x120
[ 1350.617448][ C1] ? addrconf_notify+0x5ab/0xd50
[ 1350.617451][ C1] ? notifier_call_chain+0xcd/0x150
[ 1350.617456][ C1] ? netdev_state_change+0xf5/0x120
[ 1350.617458][ C1] ? linkwatch_do_dev+0xd2/0x100
[ 1350.617461][ C1] ? __linkwatch_run_queue+0x1df/0x650
[ 1350.617463][ C1] ? linkwatch_event+0x40/0x60
[ 1350.617466][ C1] ? process_one_work+0xe55/0x16d0
[ 1350.617468][ C1] ? worker_thread+0x58c/0xce0
[ 1350.617470][ C1] ? kthread+0x359/0x5d0
[ 1350.617472][ C1] ? ret_from_fork+0x31/0x70
[ 1350.617476][ C1] ? ret_from_fork_asm+0x1a/0x30
[ 1350.617484][ C1] ? set_track_prepare+0x40/0x70
[ 1350.617487][ C1] ? __alloc_skb+0x215/0x2e0
[ 1350.617489][ C1] ? inet6_ifinfo_notify+0x7b/0x120
[ 1350.617492][ C1] ? addrconf_notify+0x5ab/0xd50
[ 1350.617495][ C1] ? notifier_call_chain+0xcd/0x150
[ 1350.617498][ C1] ? netdev_state_change+0xf5/0x120
[ 1350.617500][ C1] ? linkwatch_do_dev+0xd2/0x100
[ 1350.617502][ C1] ? __linkwatch_run_queue+0x1df/0x650
[ 1350.617505][ C1] ? linkwatch_event+0x40/0x60
[ 1350.617507][ C1] ? process_one_work+0xe55/0x16d0
[ 1350.617509][ C1] ? worker_thread+0x58c/0xce0
[ 1350.617511][ C1] ? kthread+0x359/0x5d0
[ 1350.617513][ C1] ? ret_from_fork+0x31/0x70
[ 1350.617516][ C1] ? ret_from_fork_asm+0x1a/0x30
[ 1350.617521][ C1] ? ___slab_alloc+0xb05/0xee0
[ 1350.617526][ C1] ? __alloc_skb+0x215/0x2e0
[ 1350.617530][ C1] ? get_any_partial+0x201/0x260
[ 1350.617538][ C1] ? __lock_release+0x103/0x460
[ 1350.617541][ C1] ? __fib6_clean_all+0x14a/0x2a0
[ 1350.617546][ C1] ? __pfx___lock_release+0x10/0x10
[ 1350.617549][ C1] ? hlock_class+0x4e/0x130
[ 1350.617554][ C1] kasan_save_track+0x14/0x30
[ 1350.617558][ C1] __kasan_slab_alloc+0x59/0x70
[ 1350.617564][ C1] kmem_cache_alloc_node_noprof+0x110/0x360
[ 1350.617570][ C1] ? __fib6_clean_all+0x14a/0x2a0
[ 1350.617579][ C1] __alloc_skb+0x215/0x2e0
[ 1350.617583][ C1] ? __pfx___alloc_skb+0x10/0x10
[ 1350.617591][ C1] ? rt6_sync_up+0xc5/0x150
[ 1350.617595][ C1] ? __pfx_rt6_sync_up+0x10/0x10
[ 1350.617603][ C1] inet6_ifinfo_notify+0x7b/0x120
[ 1350.617609][ C1] addrconf_notify+0x5ab/0xd50
[ 1350.617617][ C1] notifier_call_chain+0xcd/0x150
[ 1350.617628][ C1] netdev_state_change+0xf5/0x120
[ 1350.617632][ C1] ? __pfx_netdev_state_change+0x10/0x10
[ 1350.617648][ C1] linkwatch_do_dev+0xd2/0x100
[ 1350.617652][ C1] __linkwatch_run_queue+0x1df/0x650
[ 1350.617659][ C1] ? __pfx___linkwatch_run_queue+0x10/0x10
[ 1350.617665][ C1] ? lock_acquire+0x32/0xc0
[ 1350.617675][ C1] linkwatch_event+0x40/0x60
[ 1350.617678][ C1] process_one_work+0xe55/0x16d0
[ 1350.617691][ C1] ? __pfx___lock_release+0x10/0x10
[ 1350.617697][ C1] ? __pfx_process_one_work+0x10/0x10
[ 1350.617710][ C1] ? assign_work+0x16c/0x240
[ 1350.617719][ C1] worker_thread+0x58c/0xce0
[ 1350.617733][ C1] ? __pfx_worker_thread+0x10/0x10
[ 1350.617739][ C1] kthread+0x359/0x5d0
[ 1350.617744][ C1] ? __pfx_kthread+0x10/0x10
[ 1350.617752][ C1] ? __pfx_kthread+0x10/0x10
[ 1350.617758][ C1] ret_from_fork+0x31/0x70
[ 1350.617761][ C1] ? __pfx_kthread+0x10/0x10
[ 1350.617765][ C1] ret_from_fork_asm+0x1a/0x30
[ 1350.617783][ C1]
[ 1361.031448][ T46] br0: port 2(veth2) entered blocking state
[ 1361.031736][ T46] br0: port 2(veth2) entered forwarding state
[ 1368.148424][T17945] br0: port 2(veth2) entered disabled state
[ 1368.374847][ T137] br0: port 2(veth2) entered blocking state
[ 1368.375191][ T137] br0: port 2(veth2) entered forwarding state
[ 1375.481873][T17968] br0: port 1(veth1) entered disabled state
[ 1375.573630][T17969] br0: port 2(veth2) entered disabled state
[ 1375.661813][T17970] veth2: left allmulticast mode
[ 1375.663112][T17970] veth2: left promiscuous mode
[ 1375.663584][T17970] br0: port 2(veth2) entered disabled state
[ 1375.664943][T17970] veth1: left allmulticast mode
[ 1375.665150][T17970] veth1: left promiscuous mode
[ 1375.665451][T17970] br0: port 1(veth1) entered disabled state