[ 2029.940721][T19371] veth0: renamed from veth-hv-1
[ 2030.271092][T19398] br0: port 1(vxlan0) entered blocking state
[ 2030.271277][T19398] br0: port 1(vxlan0) entered disabled state
[ 2030.271446][T19398] vxlan0: entered allmulticast mode
[ 2030.272362][T19398] vxlan0: entered promiscuous mode
[ 2030.303402][T19399] br0: port 1(vxlan0) entered blocking state
[ 2030.303620][T19399] br0: port 1(vxlan0) entered forwarding state
[ 2030.372602][T19401] veth0: renamed from veth-hv-2
[ 2030.604229][T19409] br0: port 1(vxlan0) entered blocking state
[ 2030.604411][T19409] br0: port 1(vxlan0) entered disabled state
[ 2030.604579][T19409] vxlan0: entered allmulticast mode
[ 2030.605416][T19409] vxlan0: entered promiscuous mode
[ 2030.634557][T19410] br0: port 1(vxlan0) entered blocking state
[ 2030.634775][T19410] br0: port 1(vxlan0) entered forwarding state
[ 2030.774935][T19417] br0: port 2(veth-tap) entered blocking state
[ 2030.775182][T19417] br0: port 2(veth-tap) entered disabled state
[ 2030.775436][T19417] veth-tap: entered allmulticast mode
[ 2030.776647][T19417] veth-tap: entered promiscuous mode
[ 2030.978090][ T353] br0: port 2(veth-tap) entered blocking state
[ 2030.978483][ T353] br0: port 2(veth-tap) entered forwarding state
[ 2031.078954][T19429] br0: port 2(veth-tap) entered blocking state
[ 2031.079165][T19429] br0: port 2(veth-tap) entered disabled state
[ 2031.079395][T19429] veth-tap: entered allmulticast mode
[ 2031.080408][T19429] veth-tap: entered promiscuous mode
[ 2031.131221][T19430] br0: port 2(veth-tap) entered blocking state
[ 2031.131457][T19430] br0: port 2(veth-tap) entered forwarding state
[ 2031.372938][ C1]
[ 2031.373367][ C1] =============================
[ 2031.373676][ C1] WARNING: suspicious RCU usage
[ 2031.373844][ C1] 7.2.0-rc2-virtme #1 Not tainted
[ 2031.373989][ C1] -----------------------------
[ 2031.374135][ C1] drivers/net/vxlan/vxlan_core.c:872 suspicious rcu_dereference_protected() usage!
[ 2031.374389][ C1]
[ 2031.374389][ C1] other info that might help us debug this:
[ 2031.374389][ C1]
[ 2031.374680][ C1]
[ 2031.374680][ C1] rcu_scheduler_active = 2, debug_locks = 1
[ 2031.374893][ C1] 8 locks held by kworker/1:1/13190:
[ 2031.375040][ C1] #0: ff11000009010940 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 2031.375348][ C1] #1: ffa0000001987d10 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 2031.375691][ C1] #2: ff11000011f70d30 (&idev->mc_lock){+.+.}-{4:4}, at: mld_ifc_work+0x2e/0x190
[ 2031.375948][ C1] #3: ffffffffba591dc0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x1c9/0xec0
[ 2031.376208][ C1] #4: ffffffffba591dc0 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0
[ 2031.376467][ C1] #5: ffffffffba591dc0 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490
[ 2031.376724][ C1] #6: ffffffffba591dc0 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish+0x2ba/0x610
[ 2031.377014][ C1] #7: ff1100000eba2fa8 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop+0x5dc/0x9a0 [vxlan]
[ 2031.377313][ C1]
[ 2031.377313][ C1] stack backtrace:
[ 2031.377495][ C1] CPU: 1 UID: 0 PID: 13190 Comm: kworker/1:1 Not tainted 7.2.0-rc2-virtme #1 PREEMPT(full)
[ 2031.377498][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2031.377500][ C1] Workqueue: mld mld_ifc_work
[ 2031.377503][ C1] Call Trace:
[ 2031.377505][ C1]
[ 2031.377507][ C1] dump_stack_lvl+0x6f/0xa0
[ 2031.377512][ C1] lockdep_rcu_suspicious.cold+0x37/0x89
[ 2031.377518][ C1] vxlan_fdb_create+0xe1b/0x1a70 [vxlan]
[ 2031.377523][ C1] ? vxlan_find_mac_rcu+0x578/0x6b0 [vxlan]
[ 2031.377529][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 2031.377533][ C1] ? find_held_lock+0x2b/0x80
[ 2031.377535][ C1] ? vxlan_open+0x340/0x340 [vxlan]
[ 2031.377539][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 2031.377544][ C1] vxlan_fdb_update+0x208/0x3e0 [vxlan]
[ 2031.377551][ C1] ? vxlan_fdb_create+0x1a70/0x1a70 [vxlan]
[ 2031.377554][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 2031.377557][ C1] ? do_raw_spin_lock+0x131/0x280
[ 2031.377561][ C1] vxlan_snoop+0x6ba/0x9a0 [vxlan]
[ 2031.377570][ C1] ? __iptunnel_pull_header+0x33b/0x730
[ 2031.377574][ C1] vxlan_rcv+0x172e/0x2c20 [vxlan]
[ 2031.377583][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 2031.377588][ C1] ? udp_lib_lport_inuse2+0x3d0/0x3d0
[ 2031.377593][ C1] ? __udp4_lib_lookup+0x5f1/0x820
[ 2031.377596][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 2031.377600][ C1] ? udp_queue_rcv_one_skb+0x645/0xb00
[ 2031.377602][ C1] udp_queue_rcv_one_skb+0x645/0xb00
[ 2031.377603][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 2031.377605][ C1] ? down_read_killable_nested+0x3c2/0x600
[ 2031.377608][ C1] udp_unicast_rcv_skb+0x366/0x450
[ 2031.377611][ C1] ? udp_rcv+0xce3/0x1e30
[ 2031.377613][ C1] udp_rcv+0xd01/0x1e30
[ 2031.377617][ C1] ? udp_sk_rx_dst_set+0x90/0x90
[ 2031.377621][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 2031.377623][ C1] ? ip_local_deliver_finish+0x2ba/0x610
[ 2031.377626][ C1] ip_protocol_deliver_rcu+0x82/0x350
[ 2031.377630][ C1] ? process_backlog+0x561/0x1490
[ 2031.377631][ C1] ip_local_deliver_finish+0x36f/0x610
[ 2031.377634][ C1] ip_local_deliver+0x184/0x4c0
[ 2031.377637][ C1] ? ip_local_deliver_finish+0x610/0x610
[ 2031.377639][ C1] ? ip_rcv_finish_core+0x553/0x14c0
[ 2031.377641][ C1] ? __asan_memset+0x27/0x50
[ 2031.377647][ C1] ? process_backlog+0x561/0x1490
[ 2031.377649][ C1] ip_rcv+0xdc/0x3d0
[ 2031.377651][ C1] ? ip_local_deliver+0x4c0/0x4c0
[ 2031.377652][ C1] ? validate_chain+0x38b/0xc20
[ 2031.377655][ C1] ? handle_softirqs+0x1d8/0x8f0
[ 2031.377658][ C1] ? __irq_exit_rcu+0x103/0x1c0
[ 2031.377660][ C1] ? irq_exit_rcu+0xe/0x30
[ 2031.377662][ C1] ? mark_usage+0x61/0x170
[ 2031.377664][ C1] ? __lock_acquire+0x518/0xc20
[ 2031.377667][ C1] ? match_smt+0x977/0x9b0
[ 2031.377671][ C1] __netif_receive_skb_one_core+0xfc/0x180
[ 2031.377673][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 2031.377676][ C1] ? __netif_receive_skb_list_core+0x9e0/0x9e0
[ 2031.377678][ C1] ? rcu_is_watching+0x15/0xd0
[ 2031.377684][ C1] process_backlog+0x2bc/0x1490
[ 2031.377688][ C1] __napi_poll+0xa7/0x3b0
[ 2031.377691][ C1] net_rx_action+0x513/0xf50
[ 2031.377695][ C1] ? trace_irq_disable.constprop.0+0x9b/0x160
[ 2031.377699][ C1] ? __napi_poll+0x3b0/0x3b0
[ 2031.377708][ C1] ? rcu_is_watching+0x15/0xd0
[ 2031.377710][ C1] ? mark_held_locks+0x40/0x70
[ 2031.377713][ C1] handle_softirqs+0x1d8/0x8f0
[ 2031.377717][ C1] ? _local_bh_enable+0xd0/0xd0
[ 2031.377720][ C1] ? __dev_queue_xmit+0x974/0x1b90
[ 2031.377723][ C1] do_softirq+0xa9/0xe0
[ 2031.377725][ C1]
[ 2031.377726][ C1]
[ 2031.377726][ C1] __local_bh_enable_ip+0x113/0x140
[ 2031.377729][ C1] __dev_queue_xmit+0x989/0x1b90
[ 2031.377733][ C1] ? __lock_acquire+0x518/0xc20
[ 2031.377736][ C1] ? netdev_core_pick_tx+0x2c0/0x2c0
[ 2031.377738][ C1] ? find_held_lock+0x2b/0x80
[ 2031.377741][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 2031.377743][ C1] ? rcu_is_watching+0x15/0xd0
[ 2031.377745][ C1] ? mark_held_locks+0x40/0x70
[ 2031.377748][ C1] ? __asan_memcpy+0x3c/0x60
[ 2031.377750][ C1] ? neigh_hh_output+0x152/0x4c0
[ 2031.377754][ C1] ip6_finish_output2+0x986/0x1310
[ 2031.377758][ C1] ? ip6_xmit+0x2000/0x2000
[ 2031.377759][ C1] ? find_held_lock+0x2b/0x80
[ 2031.377762][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 2031.377765][ C1] ? ip6_mtu+0x174/0x410
[ 2031.377769][ C1] ip6_finish_output+0x701/0xe80
[ 2031.377773][ C1] ip6_output+0x23f/0x7f0
[ 2031.377775][ C1] ? ip6_finish_output+0xe80/0xe80
[ 2031.377777][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 2031.377779][ C1] ? xfrm_bundle_lookup.constprop.0+0xba0/0xba0
[ 2031.377782][ C1] ? mark_held_locks+0x40/0x70
[ 2031.377785][ C1] ? __local_bh_enable_ip+0xa5/0x140
[ 2031.377787][ C1] ? __local_bh_enable_ip+0xa5/0x140
[ 2031.377789][ C1] ? icmp6_dst_alloc+0x317/0x4d0
[ 2031.377792][ C1] mld_sendpack+0x9d6/0xec0
[ 2031.377796][ C1] ? mld_dad_start_work+0x240/0x240
[ 2031.377802][ C1] ? mld_send_cr+0x50f/0x820
[ 2031.377806][ C1] mld_ifc_work+0x36/0x190
[ 2031.377808][ C1] ? process_one_work+0xdb7/0x1410
[ 2031.377809][ C1] process_one_work+0xdf8/0x1410
[ 2031.377815][ C1] ? pwq_dec_nr_in_flight+0x710/0x710
[ 2031.377816][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 2031.377823][ C1] worker_thread+0x4f1/0xd60
[ 2031.377826][ C1] ? rescuer_thread+0x1320/0x1320
[ 2031.377828][ C1] ? __kthread_parkme+0xbd/0x210
[ 2031.377831][ C1] ? rescuer_thread+0x1320/0x1320
[ 2031.377834][ C1] ? rescuer_thread+0x1320/0x1320
[ 2031.377835][ C1] kthread+0x367/0x460
[ 2031.377837][ C1] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 2031.377839][ C1] ? kthread_affine_node+0x330/0x330
[ 2031.377841][ C1] ret_from_fork+0x474/0x6b0
[ 2031.377845][ C1] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 2031.377849][ C1] ? __switch_to+0x5a3/0xe00
[ 2031.377851][ C1] ? kthread_affine_node+0x330/0x330
[ 2031.377853][ C1] ret_from_fork_asm+0x11/0x20
[ 2031.377860][ C1]
[ 2031.461177][T19445] br0: port 1(vxlan0) entered disabled state
[ 2031.494249][T19446] br0: port 1(vxlan0) entered blocking state
[ 2031.494432][T19446] br0: port 1(vxlan0) entered forwarding state
[ 2031.543551][T19448] br0: port 1(vxlan0) entered disabled state
[ 2031.577499][T19449] br0: port 1(vxlan0) entered blocking state
[ 2031.577715][T19449] br0: port 1(vxlan0) entered forwarding state
[ 2031.823326][ T12] veth-tap: left allmulticast mode
[ 2031.823472][ T12] veth-tap: left promiscuous mode
[ 2031.823760][ T12] br0: port 2(veth-tap) entered disabled state
[ 2031.830894][ T12] vxlan0: left allmulticast mode
[ 2031.831031][ T12] vxlan0: left promiscuous mode
[ 2031.831213][ T12] br0: port 1(vxlan0) entered disabled state
[ 2031.884737][ T12] br0: port 1(vxlan0) entered disabled state
[ 2031.885417][ T12] vxlan0 (unregistering): left allmulticast mode
[ 2031.886184][ T12] vxlan0 (unregistering): left promiscuous mode
[ 2031.886341][ T12] br0: port 1(vxlan0) entered disabled state
[ 2031.978029][ T12] veth-tap: left allmulticast mode
[ 2031.978163][ T12] veth-tap: left promiscuous mode
[ 2031.978360][ T12] br0: port 2(veth-tap) entered disabled state