[ 1151.248594][ T5443] br1: port 1(vx100) entered blocking state
[ 1151.248822][ T5443] br1: port 1(vx100) entered disabled state
[ 1151.249012][ T5443] vx100: entered allmulticast mode
[ 1151.250538][ T5443] vx100: entered promiscuous mode
[ 1151.250891][ T5443] br1: port 1(vx100) entered blocking state
[ 1151.251066][ T5443] br1: port 1(vx100) entered forwarding state
[ 1151.315873][ T5445] br1: port 2(veth1) entered blocking state
[ 1151.316197][ T5445] br1: port 2(veth1) entered disabled state
[ 1151.316529][ T5445] veth1: entered allmulticast mode
[ 1151.319212][ T5445] veth1: entered promiscuous mode
[ 1151.344261][ T4032] br1: port 2(veth1) entered blocking state
[ 1151.345016][ T4032] br1: port 2(veth1) entered forwarding state
[ 1151.417505][ T5448] br1: port 3(veth2) entered blocking state
[ 1151.417713][ T5448] br1: port 3(veth2) entered disabled state
[ 1151.417914][ T5448] veth2: entered allmulticast mode
[ 1151.420177][ T5448] veth2: entered promiscuous mode
[ 1151.453645][ T4032] br1: port 3(veth2) entered blocking state
[ 1151.453965][ T4032] br1: port 3(veth2) entered forwarding state
[ 1152.670623][ T5502] br2: port 1(w1) entered blocking state
[ 1152.670799][ T5502] br2: port 1(w1) entered disabled state
[ 1152.670952][ T5502] w1: entered allmulticast mode
[ 1152.672388][ T5502] w1: entered promiscuous mode
[ 1152.694459][ T5503] br2: port 1(w1) entered blocking state
[ 1152.694623][ T5503] br2: port 1(w1) entered forwarding state
[ 1152.855912][ T5509] br2: port 2(vx100) entered blocking state
[ 1152.856110][ T5509] br2: port 2(vx100) entered disabled state
[ 1152.856443][ T5509] vx100: entered allmulticast mode
[ 1152.857885][ T5509] vx100: entered promiscuous mode
[ 1152.858237][ T5509] br2: port 2(vx100) entered blocking state
[ 1152.858414][ T5509] br2: port 2(vx100) entered forwarding state
[ 1153.789624][ T5549] br2: port 1(w1) entered blocking state
[ 1153.789798][ T5549] br2: port 1(w1) entered disabled state
[ 1153.789946][ T5549] w1: entered allmulticast mode
[ 1153.792051][ T5549] w1: entered promiscuous mode
[ 1153.819639][ T5550] br2: port 1(w1) entered blocking state
[ 1153.819801][ T5550] br2: port 1(w1) entered forwarding state
[ 1153.968435][ T5556] br2: port 2(vx100) entered blocking state
[ 1153.968636][ T5556] br2: port 2(vx100) entered disabled state
[ 1153.968829][ T5556] vx100: entered allmulticast mode
[ 1153.970281][ T5556] vx100: entered promiscuous mode
[ 1153.970629][ T5556] br2: port 2(vx100) entered blocking state
[ 1153.970808][ T5556] br2: port 2(vx100) entered forwarding state
[ 1154.510208][ C1]
[ 1154.510779][ C1] =============================
[ 1154.510945][ C1] WARNING: suspicious RCU usage
[ 1154.511099][ C1] 7.2.0-rc2-virtme #1 Not tainted
[ 1154.511262][ C1] -----------------------------
[ 1154.511424][ C1] drivers/net/vxlan/vxlan_core.c:872 suspicious rcu_dereference_protected() usage!
[ 1154.511699][ C1]
[ 1154.511699][ C1] other info that might help us debug this:
[ 1154.511699][ C1]
[ 1154.512011][ C1]
[ 1154.512011][ C1] rcu_scheduler_active = 2, debug_locks = 1
[ 1154.512238][ C1] 8 locks held by kworker/1:2/4029:
[ 1154.512400][ C1] #0: ff11000008c11b40 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 1154.512726][ C1] #1: ffa0000006817d10 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 1154.513079][ C1] #2: ff1100000fe53d30 (&idev->mc_lock){+.+.}-{4:4}, at: mld_ifc_work+0x2e/0x190
[ 1154.513358][ C1] #3: ffffffffab97dd40 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x1c9/0xec0
[ 1154.513633][ C1] #4: ffffffffab97dd40 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0
[ 1154.513910][ C1] #5: ffffffffab97dd40 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490
[ 1154.514349][ C1] #6: ffffffffab97dd40 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish+0x2ba/0x610
[ 1154.514666][ C1] #7: ff110000103aaf68 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop+0x5dc/0x9a0 [vxlan]
[ 1154.514990][ C1]
[ 1154.514990][ C1] stack backtrace:
[ 1154.515184][ C1] CPU: 1 UID: 0 PID: 4029 Comm: kworker/1:2 Not tainted 7.2.0-rc2-virtme #1 PREEMPT(full)
[ 1154.515186][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1154.515188][ C1] Workqueue: mld mld_ifc_work
[ 1154.515192][ C1] Call Trace:
[ 1154.515194][ C1]
[ 1154.515196][ C1] dump_stack_lvl+0x6f/0xa0
[ 1154.515202][ C1] lockdep_rcu_suspicious.cold+0x37/0x89
[ 1154.515207][ C1] vxlan_fdb_create+0xe1b/0x1a70 [vxlan]
[ 1154.515213][ C1] ? vxlan_find_mac_rcu+0x578/0x6b0 [vxlan]
[ 1154.515220][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 1154.515223][ C1] ? find_held_lock+0x2b/0x80
[ 1154.515227][ C1] ? vxlan_open+0x340/0x340 [vxlan]
[ 1154.515231][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 1154.515233][ C1] ? rcu_read_lock_any_held+0x3c/0x90
[ 1154.515240][ C1] vxlan_fdb_update+0x208/0x3e0 [vxlan]
[ 1154.515247][ C1] ? vxlan_fdb_create+0x1a70/0x1a70 [vxlan]
[ 1154.515250][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 1154.515253][ C1] ? do_raw_spin_lock+0x131/0x280
[ 1154.515257][ C1] vxlan_snoop+0x6ba/0x9a0 [vxlan]
[ 1154.515263][ C1] ? __iptunnel_pull_header+0x33b/0x730
[ 1154.515271][ C1] vxlan_rcv+0x172e/0x2c20 [vxlan]
[ 1154.515275][ C1] ? ip_rcv_finish_core+0x553/0x14c0
[ 1154.515277][ C1] ? ip_rcv_finish+0xee/0x250
[ 1154.515278][ C1] ? ip_rcv+0xdc/0x3d0
[ 1154.515280][ C1] ? __netif_receive_skb_one_core+0xfc/0x180
[ 1154.515282][ C1] ? process_backlog+0x2bc/0x1490
[ 1154.515288][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 1154.515293][ C1] ? udp4_lib_lookup2+0xd4/0x740
[ 1154.515299][ C1] ? __udp4_lib_lookup+0x5f1/0x820
[ 1154.515302][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 1154.515306][ C1] ? udp_queue_rcv_one_skb+0x645/0xb00
[ 1154.515308][ C1] udp_queue_rcv_one_skb+0x645/0xb00
[ 1154.515309][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 1154.515311][ C1] ? trace_contention_begin+0x192/0x1b0
[ 1154.515314][ C1] udp_unicast_rcv_skb+0x366/0x450
[ 1154.515317][ C1] ? udp_rcv+0xce3/0x1e30
[ 1154.515319][ C1] udp_rcv+0xd01/0x1e30
[ 1154.515324][ C1] ? udp_sk_rx_dst_set+0x90/0x90
[ 1154.515327][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 1154.515330][ C1] ? ip_local_deliver_finish+0x2ba/0x610
[ 1154.515333][ C1] ip_protocol_deliver_rcu+0x82/0x350
[ 1154.515337][ C1] ? process_backlog+0x561/0x1490
[ 1154.515339][ C1] ip_local_deliver_finish+0x36f/0x610
[ 1154.515342][ C1] ip_local_deliver+0x184/0x4c0
[ 1154.515344][ C1] ? ip_local_deliver_finish+0x610/0x610
[ 1154.515347][ C1] ? ip_rcv_finish_core+0x553/0x14c0
[ 1154.515349][ C1] ? __asan_memset+0x27/0x50
[ 1154.515356][ C1] ? process_backlog+0x561/0x1490
[ 1154.515358][ C1] ip_rcv+0xdc/0x3d0
[ 1154.515360][ C1] ? ip_local_deliver+0x4c0/0x4c0
[ 1154.515364][ C1] ? mark_usage+0x61/0x170
[ 1154.515366][ C1] ? __lock_acquire+0x518/0xc20
[ 1154.515368][ C1] ? netdev_upper_dev_unlink+0x97/0xa0
[ 1154.515372][ C1] __netif_receive_skb_one_core+0xfc/0x180
[ 1154.515374][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 1154.515377][ C1] ? __netif_receive_skb_list_core+0x9e0/0x9e0
[ 1154.515379][ C1] ? rcu_is_watching+0x15/0xd0
[ 1154.515384][ C1] process_backlog+0x2bc/0x1490
[ 1154.515389][ C1] __napi_poll+0xa7/0x3b0
[ 1154.515392][ C1] net_rx_action+0x513/0xf50
[ 1154.515398][ C1] ? __napi_poll+0x3b0/0x3b0
[ 1154.515399][ C1] ? validate_chain+0x38b/0xc20
[ 1154.515409][ C1] ? __rwlock_init+0x150/0x150
[ 1154.515411][ C1] ? mark_held_locks+0x40/0x70
[ 1154.515414][ C1] handle_softirqs+0x1d8/0x8f0
[ 1154.515420][ C1] ? _local_bh_enable+0xd0/0xd0
[ 1154.515422][ C1] ? do_raw_spin_unlock+0x59/0x250
[ 1154.515424][ C1] ? _raw_spin_unlock+0x2d/0x50
[ 1154.515427][ C1] ? __dev_queue_xmit+0x964/0x1b80
[ 1154.515430][ C1] do_softirq+0xa9/0xe0
[ 1154.515432][ C1]
[ 1154.515433][ C1]
[ 1154.515433][ C1] __local_bh_enable_ip+0x113/0x140
[ 1154.515436][ C1] __dev_queue_xmit+0x979/0x1b80
[ 1154.515439][ C1] ? __lock_acquire+0x518/0xc20
[ 1154.515444][ C1] ? netdev_core_pick_tx+0x2c0/0x2c0
[ 1154.515454][ C1] ip6_finish_output2+0x423/0x1300
[ 1154.515459][ C1] ? ip6_xmit+0x2000/0x2000
[ 1154.515460][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 1154.515462][ C1] ? find_held_lock+0x2b/0x80
[ 1154.515465][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 1154.515468][ C1] ? ip6_mtu+0x15d/0x310
[ 1154.515473][ C1] ip6_finish_output+0x646/0xda0
[ 1154.515476][ C1] ip6_output+0x23f/0x7f0
[ 1154.515479][ C1] ? ip6_finish_output+0xda0/0xda0
[ 1154.515480][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 1154.515482][ C1] ? xfrm_bundle_lookup.constprop.0+0xba0/0xba0
[ 1154.515485][ C1] ? mark_held_locks+0x40/0x70
[ 1154.515488][ C1] ? __local_bh_enable_ip+0xa5/0x140
[ 1154.515490][ C1] ? __local_bh_enable_ip+0xa5/0x140
[ 1154.515493][ C1] ? icmp6_dst_alloc+0x317/0x4d0
[ 1154.515496][ C1] mld_sendpack+0x9d6/0xec0
[ 1154.515501][ C1] ? mld_dad_start_work+0x240/0x240
[ 1154.515506][ C1] ? mld_send_cr+0x50f/0x820
[ 1154.515510][ C1] mld_ifc_work+0x36/0x190
[ 1154.515512][ C1] ? process_one_work+0xdb7/0x1410
[ 1154.515514][ C1] process_one_work+0xdf8/0x1410
[ 1154.515520][ C1] ? pwq_dec_nr_in_flight+0x710/0x710
[ 1154.515522][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 1154.515529][ C1] worker_thread+0x4f1/0xd60
[ 1154.515532][ C1] ? rescuer_thread+0x1320/0x1320
[ 1154.515534][ C1] ? __kthread_parkme+0xbd/0x210
[ 1154.515537][ C1] ? rescuer_thread+0x1320/0x1320
[ 1154.515539][ C1] ? rescuer_thread+0x1320/0x1320
[ 1154.515545][ C1] kthread+0x367/0x460
[ 1154.515547][ C1] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 1154.515551][ C1] ? kthread_affine_node+0x330/0x330
[ 1154.515553][ C1] ret_from_fork+0x474/0x6b0
[ 1154.515557][ C1] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 1154.515561][ C1] ? __switch_to+0x5a3/0xe00
[ 1154.515564][ C1] ? kthread_affine_node+0x330/0x330
[ 1154.515566][ C1] ret_from_fork_asm+0x11/0x20
[ 1154.515575][ C1]
[ 1163.443129][ T12] vx100: left allmulticast mode
[ 1163.444082][ T12] vx100: left promiscuous mode
[ 1163.444391][ T12] br2: port 2(vx100) entered disabled state
[ 1163.447220][ T12] w1: left allmulticast mode
[ 1163.448916][ T12] w1: left promiscuous mode
[ 1163.449287][ T12] br2: port 1(w1) entered disabled state
[ 1163.564817][ T12] vx100: left allmulticast mode
[ 1163.564987][ T12] vx100: left promiscuous mode
[ 1163.565205][ T12] br2: port 2(vx100) entered disabled state
[ 1163.567618][ T12] w1: left allmulticast mode
[ 1163.567774][ T12] w1: left promiscuous mode
[ 1163.567987][ T12] br2: port 1(w1) entered disabled state
[ 1164.162841][ T5686] br1: port 3(veth2) entered disabled state
[ 1164.186191][ T5687] veth2: left allmulticast mode
[ 1164.186364][ T5687] veth2: left promiscuous mode
[ 1164.186583][ T5687] br1: port 3(veth2) entered disabled state
[ 1164.250304][ T5689] br1: port 2(veth1) entered disabled state
[ 1164.280686][ T5690] veth1: left allmulticast mode
[ 1164.280867][ T5690] veth1: left promiscuous mode
[ 1164.281116][ T5690] br1: port 2(veth1) entered disabled state
[ 1164.303688][ T5691] vx100: left allmulticast mode
[ 1164.303901][ T5691] vx100: left promiscuous mode
[ 1164.304192][ T5691] br1: port 1(vx100) entered disabled state