[ 702.622113][ T6678] br1: port 1(vx100) entered blocking state
[ 702.622373][ T6678] br1: port 1(vx100) entered disabled state
[ 702.622602][ T6678] vx100: entered allmulticast mode
[ 702.624137][ T6678] vx100: entered promiscuous mode
[ 702.627091][ T6678] br1: port 1(vx100) entered blocking state
[ 702.627311][ T6678] br1: port 1(vx100) entered forwarding state
[ 702.687676][ T6680] br1: port 2(veth1) entered blocking state
[ 702.687906][ T6680] br1: port 2(veth1) entered disabled state
[ 702.688132][ T6680] veth1: entered allmulticast mode
[ 702.690261][ T6680] veth1: entered promiscuous mode
[ 702.723650][ T39] br1: port 2(veth1) entered blocking state
[ 702.723851][ T39] br1: port 2(veth1) entered forwarding state
[ 702.766379][ T6683] br1: port 3(veth2) entered blocking state
[ 702.766596][ T6683] br1: port 3(veth2) entered disabled state
[ 702.766798][ T6683] veth2: entered allmulticast mode
[ 702.768213][ T6683] veth2: entered promiscuous mode
[ 702.789785][ T92] br1: port 3(veth2) entered blocking state
[ 702.789986][ T92] br1: port 3(veth2) entered forwarding state
[ 703.892063][ T6737] br2: port 1(w1) entered blocking state
[ 703.893804][ T6737] br2: port 1(w1) entered disabled state
[ 703.900633][ T6737] w1: entered allmulticast mode
[ 703.902760][ T6737] w1: entered promiscuous mode
[ 704.085890][ T6744] br2: port 2(vx100) entered blocking state
[ 704.086140][ T6744] br2: port 2(vx100) entered disabled state
[ 704.086345][ T6744] vx100: entered allmulticast mode
[ 704.087789][ T6744] vx100: entered promiscuous mode
[ 704.088143][ T6744] br2: port 2(vx100) entered blocking state
[ 704.088326][ T6744] br2: port 2(vx100) entered forwarding state
[ 704.300623][ T6181] br2: port 1(w1) entered blocking state
[ 704.300848][ T6181] br2: port 1(w1) entered forwarding state
[ 705.035280][ T6783] br2: port 1(w1) entered blocking state
[ 705.035453][ T6783] br2: port 1(w1) entered disabled state
[ 705.035646][ T6783] w1: entered allmulticast mode
[ 705.037164][ T6783] w1: entered promiscuous mode
[ 705.060236][ T6784] br2: port 1(w1) entered blocking state
[ 705.060426][ T6784] br2: port 1(w1) entered forwarding state
[ 705.185683][ C0]
[ 705.185971][ C0] =============================
[ 705.186130][ C0] WARNING: suspicious RCU usage
[ 705.186635][ C0] 7.2.0-rc2-virtme #1 Not tainted
[ 705.186827][ C0] -----------------------------
[ 705.186981][ C0] drivers/net/vxlan/vxlan_core.c:872 suspicious rcu_dereference_protected() usage!
[ 705.187383][ C0]
[ 705.187383][ C0] other info that might help us debug this:
[ 705.187383][ C0]
[ 705.187686][ C0]
[ 705.187686][ C0] rcu_scheduler_active = 2, debug_locks = 1
[ 705.187924][ C0] 8 locks held by kworker/0:1/10:
[ 705.188077][ C0] #0: ff11000008bf9540 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 705.188401][ C0] #1: ffa00000000a7d10 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 705.188748][ C0] #2: ff1100000c742530 (&idev->mc_lock){+.+.}-{4:4}, at: mld_dad_work+0x2e/0x190
[ 705.189015][ C0] #3: ffffffffb097dd40 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x1c9/0xec0
[ 705.189289][ C0] #4: ffffffffb097dd40 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0
[ 705.189555][ C0] #5: ffffffffb097dd40 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490
[ 705.189829][ C0] #6: ffffffffb097dd40 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish+0x2ba/0x610
[ 705.190137][ C0] #7: ff110000101b2f68 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop+0x5dc/0x9a0 [vxlan]
[ 705.190452][ C0]
[ 705.190452][ C0] stack backtrace:
[ 705.190639][ C0] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 7.2.0-rc2-virtme #1 PREEMPT(full)
[ 705.190642][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 705.190644][ C0] Workqueue: mld mld_dad_work
[ 705.190648][ C0] Call Trace:
[ 705.190650][ C0]
[ 705.190652][ C0] dump_stack_lvl+0x6f/0xa0
[ 705.190657][ C0] lockdep_rcu_suspicious.cold+0x37/0x89
[ 705.190662][ C0] vxlan_fdb_create+0xe1b/0x1a70 [vxlan]
[ 705.190668][ C0] ? vxlan_find_mac_rcu+0x578/0x6b0 [vxlan]
[ 705.190674][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 705.190677][ C0] ? find_held_lock+0x2b/0x80
[ 705.190681][ C0] ? vxlan_open+0x340/0x340 [vxlan]
[ 705.190685][ C0] ? __lock_release.isra.0+0x6b/0x1a0
[ 705.190687][ C0] ? rcu_read_lock_any_held+0x3c/0x90
[ 705.190693][ C0] vxlan_fdb_update+0x208/0x3e0 [vxlan]
[ 705.190704][ C0] ? vxlan_fdb_create+0x1a70/0x1a70 [vxlan]
[ 705.190712][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 705.190715][ C0] ? do_raw_spin_lock+0x131/0x280
[ 705.190719][ C0] vxlan_snoop+0x6ba/0x9a0 [vxlan]
[ 705.190725][ C0] ? __iptunnel_pull_header+0x33b/0x730
[ 705.190730][ C0] vxlan_rcv+0x172e/0x2c20 [vxlan]
[ 705.190735][ C0] ? fib_table_lookup+0xe88/0x18f0
[ 705.190742][ C0] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 705.190747][ C0] ? udp_lib_lport_inuse2+0x3d0/0x3d0
[ 705.190753][ C0] ? __udp4_lib_lookup+0x5f1/0x820
[ 705.190756][ C0] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 705.190760][ C0] ? udp_queue_rcv_one_skb+0x645/0xb00
[ 705.190762][ C0] udp_queue_rcv_one_skb+0x645/0xb00
[ 705.190764][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 705.190766][ C0] ? trace_contention_begin+0x192/0x1b0
[ 705.190769][ C0] udp_unicast_rcv_skb+0x366/0x450
[ 705.190772][ C0] ? udp_rcv+0xce3/0x1e30
[ 705.190774][ C0] udp_rcv+0xd01/0x1e30
[ 705.190779][ C0] ? udp_sk_rx_dst_set+0x90/0x90
[ 705.190782][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 705.190784][ C0] ? ip_local_deliver_finish+0x2ba/0x610
[ 705.190788][ C0] ip_protocol_deliver_rcu+0x82/0x350
[ 705.190792][ C0] ? process_backlog+0x561/0x1490
[ 705.190794][ C0] ip_local_deliver_finish+0x36f/0x610
[ 705.190797][ C0] ip_local_deliver+0x184/0x4c0
[ 705.190800][ C0] ? ip_local_deliver_finish+0x610/0x610
[ 705.190802][ C0] ? ip_rcv_finish_core+0x6ed/0x14c0
[ 705.190804][ C0] ? __asan_memset+0x27/0x50
[ 705.190811][ C0] ? process_backlog+0x561/0x1490
[ 705.190813][ C0] ip_rcv+0xdc/0x3d0
[ 705.190815][ C0] ? ip_local_deliver+0x4c0/0x4c0
[ 705.190819][ C0] ? mark_usage+0x61/0x170
[ 705.190822][ C0] ? __lock_acquire+0x518/0xc20
[ 705.190826][ C0] __netif_receive_skb_one_core+0xfc/0x180
[ 705.190828][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 705.190832][ C0] ? __netif_receive_skb_list_core+0x9e0/0x9e0
[ 705.190836][ C0] ? rcu_is_watching+0x15/0xd0
[ 705.190842][ C0] process_backlog+0x2bc/0x1490
[ 705.190847][ C0] __napi_poll+0xa7/0x3b0
[ 705.190851][ C0] net_rx_action+0x513/0xf50
[ 705.190857][ C0] ? __napi_poll+0x3b0/0x3b0
[ 705.190862][ C0] ? __lock_release.isra.0+0x6b/0x1a0
[ 705.190863][ C0] ? __rwlock_init+0x150/0x150
[ 705.190868][ C0] ? clockevents_program_event+0x307/0x7e0
[ 705.190872][ C0] ? __run_timers+0xaa0/0xaa0
[ 705.190874][ C0] ? rcu_is_watching+0x15/0xd0
[ 705.190876][ C0] ? mark_held_locks+0x40/0x70
[ 705.190880][ C0] handle_softirqs+0x1d8/0x8f0
[ 705.190885][ C0] ? _local_bh_enable+0xd0/0xd0
[ 705.190890][ C0] do_softirq+0xa9/0xe0
[ 705.190892][ C0]
[ 705.190893][ C0]
[ 705.190894][ C0] ? __dev_queue_xmit+0x946/0x1b60
[ 705.190895][ C0] __local_bh_enable_ip+0x113/0x140
[ 705.190898][ C0] __dev_queue_xmit+0x95b/0x1b60
[ 705.190901][ C0] ? __lock_acquire+0x518/0xc20
[ 705.190906][ C0] ? netdev_core_pick_tx+0x2c0/0x2c0
[ 705.190917][ C0] ip6_finish_output2+0x423/0x1300
[ 705.190921][ C0] ? ip6_xmit+0x2000/0x2000
[ 705.190922][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 705.190924][ C0] ? find_held_lock+0x2b/0x80
[ 705.190927][ C0] ? __lock_release.isra.0+0x6b/0x1a0
[ 705.190930][ C0] ? ip6_mtu+0x15d/0x310
[ 705.190935][ C0] ip6_finish_output+0x646/0xda0
[ 705.190938][ C0] ip6_output+0x23f/0x7f0
[ 705.190941][ C0] ? ip6_finish_output+0xda0/0xda0
[ 705.190942][ C0] ? __lock_release.isra.0+0x6b/0x1a0
[ 705.190944][ C0] ? xfrm_bundle_lookup.constprop.0+0xba0/0xba0
[ 705.190947][ C0] ? mark_held_locks+0x40/0x70
[ 705.190950][ C0] ? __local_bh_enable_ip+0xa5/0x140
[ 705.190952][ C0] ? __local_bh_enable_ip+0xa5/0x140
[ 705.190955][ C0] ? icmp6_dst_alloc+0x317/0x4d0
[ 705.190958][ C0] mld_sendpack+0x9d6/0xec0
[ 705.190963][ C0] ? mld_dad_start_work+0x240/0x240
[ 705.190971][ C0] mld_dad_work+0x36/0x190
[ 705.190973][ C0] ? process_one_work+0xdb7/0x1410
[ 705.190975][ C0] process_one_work+0xdf8/0x1410
[ 705.190980][ C0] ? pwq_dec_nr_in_flight+0x710/0x710
[ 705.190982][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 705.190989][ C0] worker_thread+0x4f1/0xd60
[ 705.190992][ C0] ? rescuer_thread+0x1320/0x1320
[ 705.190994][ C0] ? __kthread_parkme+0xbd/0x210
[ 705.190997][ C0] ? rescuer_thread+0x1320/0x1320
[ 705.190999][ C0] ? rescuer_thread+0x1320/0x1320
[ 705.191001][ C0] kthread+0x367/0x460
[ 705.191003][ C0] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 705.191006][ C0] ? kthread_affine_node+0x330/0x330
[ 705.191009][ C0] ret_from_fork+0x474/0x6b0
[ 705.191015][ C0] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 705.191019][ C0] ? __switch_to+0x5a3/0xe00
[ 705.191022][ C0] ? kthread_affine_node+0x330/0x330
[ 705.191025][ C0] ret_from_fork_asm+0x11/0x20
[ 705.191033][ C0]
[ 705.228599][ T6790] br2: port 2(vx100) entered blocking state
[ 705.228780][ T6790] br2: port 2(vx100) entered disabled state
[ 705.228953][ T6790] vx100: entered allmulticast mode
[ 705.231136][ T6790] vx100: entered promiscuous mode
[ 705.231492][ T6790] br2: port 2(vx100) entered blocking state
[ 705.231650][ T6790] br2: port 2(vx100) entered forwarding state
[ 714.621928][ T68] vx100: left allmulticast mode
[ 714.622123][ T68] vx100: left promiscuous mode
[ 714.622359][ T68] br2: port 2(vx100) entered disabled state
[ 714.624430][ T68] w1: left allmulticast mode
[ 714.624790][ T68] w1: left promiscuous mode
[ 714.625006][ T68] br2: port 1(w1) entered disabled state
[ 714.730677][ T68] vx100: left allmulticast mode
[ 714.730869][ T68] vx100: left promiscuous mode
[ 714.731095][ T68] br2: port 2(vx100) entered disabled state
[ 714.733261][ T68] w1: left allmulticast mode
[ 714.733414][ T68] w1: left promiscuous mode
[ 714.733626][ T68] br2: port 1(w1) entered disabled state
[ 715.296449][ T6921] br1: port 3(veth2) entered disabled state
[ 715.327869][ T6922] veth2: left allmulticast mode
[ 715.328025][ T6922] veth2: left promiscuous mode
[ 715.328249][ T6922] br1: port 3(veth2) entered disabled state
[ 715.380105][ T6924] br1: port 2(veth1) entered disabled state
[ 715.401650][ T6925] veth1: left allmulticast mode
[ 715.401867][ T6925] veth1: left promiscuous mode
[ 715.402140][ T6925] br1: port 2(veth1) entered disabled state
[ 715.424175][ T6926] vx100: left allmulticast mode
[ 715.424857][ T6926] vx100: left promiscuous mode
[ 715.425104][ T6926] br1: port 1(vx100) entered disabled state