[ 821.590278][T17606] veth0: renamed from veth-hv-1
[ 821.867137][T17632] br0: port 1(vxlan0) entered blocking state
[ 821.867358][T17632] br0: port 1(vxlan0) entered disabled state
[ 821.868121][T17632] vxlan0: entered allmulticast mode
[ 821.869129][T17632] vxlan0: entered promiscuous mode
[ 821.920623][T17633] br0: port 1(vxlan0) entered blocking state
[ 821.920804][T17633] br0: port 1(vxlan0) entered forwarding state
[ 821.991864][T17635] veth0: renamed from veth-hv-2
[ 822.223994][T17643] br0: port 1(vxlan0) entered blocking state
[ 822.224202][T17643] br0: port 1(vxlan0) entered disabled state
[ 822.224414][T17643] vxlan0: entered allmulticast mode
[ 822.225614][T17643] vxlan0: entered promiscuous mode
[ 822.249317][T17644] br0: port 1(vxlan0) entered blocking state
[ 822.249506][T17644] br0: port 1(vxlan0) entered forwarding state
[ 822.455219][T17650] br0: port 2(veth-tap) entered blocking state
[ 822.455436][T17650] br0: port 2(veth-tap) entered disabled state
[ 822.455896][T17650] veth-tap: entered allmulticast mode
[ 822.456857][T17650] veth-tap: entered promiscuous mode
[ 822.604296][ T111] br0: port 2(veth-tap) entered blocking state
[ 822.605048][ T111] br0: port 2(veth-tap) entered forwarding state
[ 822.708433][T17660] br0: port 2(veth-tap) entered blocking state
[ 822.709127][T17660] br0: port 2(veth-tap) entered disabled state
[ 822.709290][T17660] veth-tap: entered allmulticast mode
[ 822.716761][T17660] veth-tap: entered promiscuous mode
[ 822.896454][ T111] br0: port 2(veth-tap) entered blocking state
[ 822.896628][ T111] br0: port 2(veth-tap) entered forwarding state
[ 822.998515][ C0]
[ 822.998875][ C0] =============================
[ 822.999107][ C0] WARNING: suspicious RCU usage
[ 822.999271][ C0] 7.2.0-rc1-virtme #1 Not tainted
[ 822.999418][ C0] -----------------------------
[ 822.999575][ C0] drivers/net/vxlan/vxlan_core.c:872 suspicious rcu_dereference_protected() usage!
[ 822.999830][ C0]
[ 822.999830][ C0] other info that might help us debug this:
[ 822.999830][ C0]
[ 823.000120][ C0]
[ 823.000120][ C0] rcu_scheduler_active = 2, debug_locks = 1
[ 823.000341][ C0] 6 locks held by ping/17668:
[ 823.000501][ C0] #0: ff1100000599aa90 (sk_lock-AF_INET){+.+.}-{0:0}, at: raw_sendmsg+0xc91/0x1b00
[ 823.000773][ C0] #1: ffffffffb0391ec0 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660
[ 823.001035][ C0] #2: ffffffffb0391ec0 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x2c6/0x1c60
[ 823.001295][ C0] #3: ffffffffb0391ec0 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490
[ 823.001569][ C0] #4: ffffffffb0391ec0 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish+0x2ba/0x610
[ 823.001868][ C0] #5: ff11000020ebafa8 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop+0x5dc/0x9a0 [vxlan]
[ 823.002171][ C0]
[ 823.002171][ C0] stack backtrace:
[ 823.002356][ C0] CPU: 0 UID: 0 PID: 17668 Comm: ping Not tainted 7.2.0-rc1-virtme #1 PREEMPT(full)
[ 823.002359][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 823.002360][ C0] Call Trace:
[ 823.002362][ C0]
[ 823.002363][ C0] dump_stack_lvl+0x6f/0xa0
[ 823.002369][ C0] lockdep_rcu_suspicious.cold+0x37/0x89
[ 823.002374][ C0] vxlan_fdb_create+0xe1b/0x1a70 [vxlan]
[ 823.002380][ C0] ? vxlan_find_mac_rcu+0x578/0x6b0 [vxlan]
[ 823.002386][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 823.002389][ C0] ? find_held_lock+0x2b/0x80
[ 823.002392][ C0] ? vxlan_open+0x340/0x340 [vxlan]
[ 823.002396][ C0] ? __lock_release.isra.0+0x6b/0x1a0
[ 823.002401][ C0] vxlan_fdb_update+0x208/0x3e0 [vxlan]
[ 823.002407][ C0] ? vxlan_fdb_create+0x1a70/0x1a70 [vxlan]
[ 823.002410][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 823.002413][ C0] ? do_raw_spin_lock+0x131/0x280
[ 823.002417][ C0] vxlan_snoop+0x6ba/0x9a0 [vxlan]
[ 823.002423][ C0] ? __iptunnel_pull_header+0x33b/0x730
[ 823.002427][ C0] vxlan_rcv+0x172e/0x2c20 [vxlan]
[ 823.002435][ C0] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 823.002440][ C0] ? udp_lib_lport_inuse2+0x3d0/0x3d0
[ 823.002447][ C0] ? __udp4_lib_lookup+0x5f1/0x820
[ 823.002450][ C0] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 823.002454][ C0] ? udp_queue_rcv_one_skb+0x645/0xb00
[ 823.002456][ C0] udp_queue_rcv_one_skb+0x645/0xb00
[ 823.002457][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 823.002459][ C0] ? down_read_killable_nested+0x282/0x600
[ 823.002462][ C0] udp_unicast_rcv_skb+0x366/0x450
[ 823.002465][ C0] ? udp_rcv+0xce3/0x1e30
[ 823.002466][ C0] udp_rcv+0xd01/0x1e30
[ 823.002471][ C0] ? udp_sk_rx_dst_set+0x90/0x90
[ 823.002474][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 823.002476][ C0] ? ip_local_deliver_finish+0x2ba/0x610
[ 823.002480][ C0] ip_protocol_deliver_rcu+0x82/0x350
[ 823.002487][ C0] ? process_backlog+0x561/0x1490
[ 823.002489][ C0] ip_local_deliver_finish+0x36f/0x610
[ 823.002491][ C0] ip_local_deliver+0x184/0x4c0
[ 823.002494][ C0] ? ip_local_deliver_finish+0x610/0x610
[ 823.002496][ C0] ? ip_rcv_finish_core+0x553/0x14c0
[ 823.002498][ C0] ? __asan_memset+0x27/0x50
[ 823.002504][ C0] ? process_backlog+0x561/0x1490
[ 823.002506][ C0] ip_rcv+0xdc/0x3d0
[ 823.002508][ C0] ? ip_local_deliver+0x4c0/0x4c0
[ 823.002509][ C0] ? validate_chain+0x38b/0xc20
[ 823.002512][ C0] ? validate_chain+0x38b/0xc20
[ 823.002515][ C0] ? mark_usage+0x61/0x170
[ 823.002517][ C0] ? __lock_acquire+0x518/0xc20
[ 823.002521][ C0] __netif_receive_skb_one_core+0xfc/0x180
[ 823.002523][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 823.002526][ C0] ? __netif_receive_skb_list_core+0x9e0/0x9e0
[ 823.002528][ C0] ? rcu_is_watching+0x15/0xd0
[ 823.002533][ C0] process_backlog+0x2bc/0x1490
[ 823.002538][ C0] __napi_poll+0xa7/0x3b0
[ 823.002540][ C0] net_rx_action+0x513/0xf50
[ 823.002545][ C0] ? __napi_poll+0x3b0/0x3b0
[ 823.002554][ C0] ? mark_held_locks+0x40/0x70
[ 823.002558][ C0] handle_softirqs+0x1d8/0x8f0
[ 823.002563][ C0] ? _local_bh_enable+0xd0/0xd0
[ 823.002565][ C0] ? do_raw_spin_unlock+0x59/0x250
[ 823.002567][ C0] ? rcu_is_watching+0x15/0xd0
[ 823.002570][ C0] do_softirq+0xa9/0xe0
[ 823.002572][ C0]
[ 823.002573][ C0]
[ 823.002573][ C0] __local_bh_enable_ip+0x113/0x140
[ 823.002576][ C0] __neigh_event_send+0x30a/0x1070
[ 823.002578][ C0] ? warn_bogus_irq_restore+0x1/0x20
[ 823.002584][ C0] ? sync_exp_reset_tree_hotplug+0x3b0/0x3f0
[ 823.002587][ C0] neigh_resolve_output+0xbe/0x140
[ 823.002589][ C0] ip_finish_output2+0x684/0x1c60
[ 823.002592][ C0] ? ip_dst_mtu_maybe_forward+0x2c7/0x720
[ 823.002595][ C0] ? ip4_dst_hoplimit+0x320/0x320
[ 823.002597][ C0] ? rcu_is_watching+0x15/0xd0
[ 823.002601][ C0] ip_output+0x1ca/0x660
[ 823.002604][ C0] ? ip_finish_output+0x460/0x460
[ 823.002606][ C0] ? __ip_make_skb+0x106a/0x2300
[ 823.002612][ C0] ip_push_pending_frames+0xf6/0x250
[ 823.002615][ C0] raw_sendmsg+0x11f3/0x1b00
[ 823.002618][ C0] ? mark_lock+0xa00/0xa00
[ 823.002621][ C0] ? raw_send_hdrinc+0x1740/0x1740
[ 823.002623][ C0] ? folio_add_lru_vma+0x1a1/0x250
[ 823.002627][ C0] ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[ 823.002631][ C0] ? rcu_read_unlock+0x1b/0x70
[ 823.002636][ C0] ? wp_page_copy+0x741/0x10d0
[ 823.002639][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 823.002641][ C0] ? __might_fault+0x97/0x140
[ 823.002646][ C0] ? __might_fault+0x97/0x140
[ 823.002648][ C0] ? __might_fault+0x97/0x140
[ 823.002651][ C0] __sys_sendto+0x2aa/0x400
[ 823.002655][ C0] ? __ia32_sys_getpeername+0xd0/0xd0
[ 823.002656][ C0] ? __lock_release.isra.0+0xb3/0x1a0
[ 823.002665][ C0] ? exc_page_fault+0x87/0x100
[ 823.002670][ C0] __x64_sys_sendto+0xe4/0x1f0
[ 823.002672][ C0] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 823.002675][ C0] ? lockdep_hardirqs_on+0x8c/0x130
[ 823.002677][ C0] ? do_syscall_64+0x82/0x590
[ 823.002679][ C0] do_syscall_64+0x117/0x590
[ 823.002681][ C0] ? trace_hardirqs_off+0xd/0x30
[ 823.002683][ C0] ? exc_page_fault+0xee/0x100
[ 823.002685][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 823.002687][ C0] RIP: 0033:0x7f5dd5a1254e
[ 823.002691][ C0] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
[ 823.002693][ C0] RSP: 002b:00007fffe0895aa0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 823.002695][ C0] RAX: ffffffffffffffda RBX: 0000000000000040 RCX: 00007f5dd5a1254e
[ 823.002697][ C0] RDX: 0000000000000040 RSI: 0000562a0b6070a4 RDI: 0000000000000005
[ 823.002697][ C0] RBP: 00007fffe0895ab0 R08: 0000562a0b619320 R09: 0000000000000010
[ 823.002698][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 431bde82d7b634db
[ 823.002699][ C0] R13: 0000000000000000 R14: 0000562a0b61a3e0 R15: 0000562a0b6070a0
[ 823.002705][ C0]
[ 823.074871][T17670] br0: port 1(vxlan0) entered disabled state
[ 823.104084][T17671] br0: port 1(vxlan0) entered blocking state
[ 823.104258][T17671] br0: port 1(vxlan0) entered forwarding state
[ 823.156227][T17673] br0: port 1(vxlan0) entered disabled state
[ 823.184216][T17674] br0: port 1(vxlan0) entered blocking state
[ 823.184386][T17674] br0: port 1(vxlan0) entered forwarding state
[ 823.442251][ T12] veth-tap: left allmulticast mode
[ 823.442489][ T12] veth-tap: left promiscuous mode
[ 823.442696][ T12] br0: port 2(veth-tap) entered disabled state
[ 823.444801][ T12] vxlan0: left allmulticast mode
[ 823.444940][ T12] vxlan0: left promiscuous mode
[ 823.445313][ T12] br0: port 1(vxlan0) entered disabled state
[ 823.492583][ T12] br0: port 1(vxlan0) entered disabled state
[ 823.493823][ T12] vxlan0 (unregistering): left allmulticast mode
[ 823.493985][ T12] vxlan0 (unregistering): left promiscuous mode
[ 823.494138][ T12] br0: port 1(vxlan0) entered disabled state
[ 823.565777][ T12] veth-tap: left allmulticast mode
[ 823.565916][ T12] veth-tap: left promiscuous mode
[ 823.566106][ T12] br0: port 2(veth-tap) entered disabled state