[ 9.691748][ T223] veth0: renamed from veth-hv-1
[ 10.049757][ T251] br0: port 1(vxlan0) entered blocking state
[ 10.049937][ T251] br0: port 1(vxlan0) entered disabled state
[ 10.050163][ T251] vxlan0: entered allmulticast mode
[ 10.051112][ T251] vxlan0: entered promiscuous mode
[ 10.075209][ T252] br0: port 1(vxlan0) entered blocking state
[ 10.075516][ T252] br0: port 1(vxlan0) entered forwarding state
[ 10.142557][ T254] veth0: renamed from veth-hv-2
[ 10.361250][ T262] br0: port 1(vxlan0) entered blocking state
[ 10.361988][ T262] br0: port 1(vxlan0) entered disabled state
[ 10.362196][ T262] vxlan0: entered allmulticast mode
[ 10.363136][ T262] vxlan0: entered promiscuous mode
[ 10.392608][ T263] br0: port 1(vxlan0) entered blocking state
[ 10.392783][ T263] br0: port 1(vxlan0) entered forwarding state
[ 10.566736][ T269] br0: port 2(veth-tap) entered blocking state
[ 10.566907][ T269] br0: port 2(veth-tap) entered disabled state
[ 10.567075][ T269] veth-tap: entered allmulticast mode
[ 10.573737][ T269] veth-tap: entered promiscuous mode
[ 10.746251][ T39] br0: port 2(veth-tap) entered blocking state
[ 10.746541][ T39] br0: port 2(veth-tap) entered forwarding state
[ 10.786989][ T275] ip (275) used greatest stack depth: 23496 bytes left
[ 10.845436][ T280] br0: port 2(veth-tap) entered blocking state
[ 10.845647][ T280] br0: port 2(veth-tap) entered disabled state
[ 10.845864][ T280] veth-tap: entered allmulticast mode
[ 10.847148][ T280] veth-tap: entered promiscuous mode
[ 11.017163][ T46] br0: port 2(veth-tap) entered blocking state
[ 11.017403][ T46] br0: port 2(veth-tap) entered forwarding state
[ 11.117901][ C1]
[ 11.118084][ C1] =============================
[ 11.118238][ C1] WARNING: suspicious RCU usage
[ 11.118458][ C1] 7.2.0-rc1-virtme #1 Not tainted
[ 11.118643][ C1] -----------------------------
[ 11.118795][ C1] drivers/net/vxlan/vxlan_core.c:872 suspicious rcu_dereference_protected() usage!
[ 11.119051][ C1]
[ 11.119051][ C1] other info that might help us debug this:
[ 11.119051][ C1]
[ 11.119346][ C1]
[ 11.119346][ C1] rcu_scheduler_active = 2, debug_locks = 1
[ 11.119573][ C1] 6 locks held by ping/289:
[ 11.119726][ C1] #0: ff110000059fea90 (sk_lock-AF_INET){+.+.}-{0:0}, at: raw_sendmsg+0xc91/0x1b00
[ 11.119995][ C1] #1: ffffffff90591ec0 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660
[ 11.120256][ C1] #2: ffffffff90591ec0 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x2c6/0x1c60
[ 11.120529][ C1] #3: ffffffff90591ec0 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490
[ 11.120795][ C1] #4: ffffffff90591ec0 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish+0x2ba/0x610
[ 11.121086][ C1] #5: ff1100000ec42fa8 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop+0x5dc/0x9a0 [vxlan]
[ 11.121397][ C1]
[ 11.121397][ C1] stack backtrace:
[ 11.121584][ C1] CPU: 1 UID: 0 PID: 289 Comm: ping Not tainted 7.2.0-rc1-virtme #1 PREEMPT(full)
[ 11.121587][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.121589][ C1] Call Trace:
[ 11.121590][ C1]
[ 11.121592][ C1] dump_stack_lvl+0x6f/0xa0
[ 11.121597][ C1] lockdep_rcu_suspicious.cold+0x37/0x89
[ 11.121602][ C1] vxlan_fdb_create+0xe1b/0x1a70 [vxlan]
[ 11.121608][ C1] ? vxlan_find_mac_rcu+0x578/0x6b0 [vxlan]
[ 11.121614][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 11.121618][ C1] ? find_held_lock+0x2b/0x80
[ 11.121621][ C1] ? vxlan_open+0x340/0x340 [vxlan]
[ 11.121624][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 11.121629][ C1] vxlan_fdb_update+0x208/0x3e0 [vxlan]
[ 11.121636][ C1] ? vxlan_fdb_create+0x1a70/0x1a70 [vxlan]
[ 11.121639][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 11.121642][ C1] ? do_raw_spin_lock+0x131/0x280
[ 11.121646][ C1] vxlan_snoop+0x6ba/0x9a0 [vxlan]
[ 11.121651][ C1] ? __iptunnel_pull_header+0x33b/0x730
[ 11.121656][ C1] vxlan_rcv+0x172e/0x2c20 [vxlan]
[ 11.121664][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 11.121669][ C1] ? udp_lib_lport_inuse2+0x3d0/0x3d0
[ 11.121673][ C1] ? __udp4_lib_lookup+0x5f1/0x820
[ 11.121681][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 11.121685][ C1] ? udp_queue_rcv_one_skb+0x645/0xb00
[ 11.121687][ C1] udp_queue_rcv_one_skb+0x645/0xb00
[ 11.121688][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 11.121690][ C1] ? down_read_killable_nested+0x282/0x600
[ 11.121693][ C1] udp_unicast_rcv_skb+0x366/0x450
[ 11.121696][ C1] ? udp_rcv+0xce3/0x1e30
[ 11.121698][ C1] udp_rcv+0xd01/0x1e30
[ 11.121702][ C1] ? udp_sk_rx_dst_set+0x90/0x90
[ 11.121706][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 11.121708][ C1] ? ip_local_deliver_finish+0x2ba/0x610
[ 11.121711][ C1] ip_protocol_deliver_rcu+0x82/0x350
[ 11.121714][ C1] ? process_backlog+0x561/0x1490
[ 11.121716][ C1] ip_local_deliver_finish+0x36f/0x610
[ 11.121719][ C1] ip_local_deliver+0x184/0x4c0
[ 11.121721][ C1] ? ip_local_deliver_finish+0x610/0x610
[ 11.121724][ C1] ? ip_rcv_finish_core+0x553/0x14c0
[ 11.121726][ C1] ? __asan_memset+0x27/0x50
[ 11.121732][ C1] ? process_backlog+0x561/0x1490
[ 11.121733][ C1] ip_rcv+0xdc/0x3d0
[ 11.121736][ C1] ? ip_local_deliver+0x4c0/0x4c0
[ 11.121737][ C1] ? validate_chain+0x38b/0xc20
[ 11.121741][ C1] ? mark_usage+0x61/0x170
[ 11.121743][ C1] ? __lock_acquire+0x518/0xc20
[ 11.121747][ C1] __netif_receive_skb_one_core+0xfc/0x180
[ 11.121749][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 11.121752][ C1] ? __netif_receive_skb_list_core+0x9e0/0x9e0
[ 11.121754][ C1] ? rcu_is_watching+0x15/0xd0
[ 11.121760][ C1] process_backlog+0x2bc/0x1490
[ 11.121764][ C1] __napi_poll+0xa7/0x3b0
[ 11.121767][ C1] net_rx_action+0x513/0xf50
[ 11.121772][ C1] ? __napi_poll+0x3b0/0x3b0
[ 11.121776][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 11.121778][ C1] ? __rwlock_init+0x150/0x150
[ 11.121783][ C1] ? clockevents_program_event+0x307/0x7e0
[ 11.121787][ C1] ? __run_timers+0xaa0/0xaa0
[ 11.121789][ C1] ? rcu_is_watching+0x15/0xd0
[ 11.121791][ C1] ? mark_held_locks+0x40/0x70
[ 11.121794][ C1] handle_softirqs+0x1d8/0x8f0
[ 11.121799][ C1] ? _local_bh_enable+0xd0/0xd0
[ 11.121804][ C1] do_softirq+0xa9/0xe0
[ 11.121806][ C1]
[ 11.121807][ C1]
[ 11.121807][ C1] __local_bh_enable_ip+0x113/0x140
[ 11.121810][ C1] __neigh_event_send+0x30a/0x1070
[ 11.121812][ C1] ? warn_bogus_irq_restore+0x1/0x20
[ 11.121817][ C1] ? sync_exp_reset_tree_hotplug+0x3b0/0x3f0
[ 11.121821][ C1] neigh_resolve_output+0xbe/0x140
[ 11.121823][ C1] ip_finish_output2+0x684/0x1c60
[ 11.121826][ C1] ? ip_dst_mtu_maybe_forward+0x2c7/0x720
[ 11.121829][ C1] ? ip4_dst_hoplimit+0x320/0x320
[ 11.121831][ C1] ? rcu_is_watching+0x15/0xd0
[ 11.121835][ C1] ip_output+0x1ca/0x660
[ 11.121838][ C1] ? ip_finish_output+0x460/0x460
[ 11.121840][ C1] ? __ip_make_skb+0x106a/0x2300
[ 11.121846][ C1] ip_push_pending_frames+0xf6/0x250
[ 11.121849][ C1] raw_sendmsg+0x11f3/0x1b00
[ 11.121853][ C1] ? raw_send_hdrinc+0x1740/0x1740
[ 11.121855][ C1] ? folio_add_lru_vma+0x1a1/0x250
[ 11.121859][ C1] ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[ 11.121863][ C1] ? rcu_read_unlock+0x1b/0x70
[ 11.121868][ C1] ? wp_page_copy+0x741/0x10d0
[ 11.121871][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 11.121873][ C1] ? __might_fault+0x97/0x140
[ 11.121878][ C1] ? __might_fault+0x97/0x140
[ 11.121880][ C1] ? __might_fault+0x97/0x140
[ 11.121884][ C1] __sys_sendto+0x2aa/0x400
[ 11.121887][ C1] ? __ia32_sys_getpeername+0xd0/0xd0
[ 11.121888][ C1] ? __lock_release.isra.0+0xb3/0x1a0
[ 11.121898][ C1] ? exc_page_fault+0x87/0x100
[ 11.121902][ C1] __x64_sys_sendto+0xe4/0x1f0
[ 11.121904][ C1] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 11.121907][ C1] ? lockdep_hardirqs_on+0x8c/0x130
[ 11.121909][ C1] ? do_syscall_64+0x82/0x590
[ 11.121912][ C1] do_syscall_64+0x117/0x590
[ 11.121913][ C1] ? trace_hardirqs_off+0xd/0x30
[ 11.121915][ C1] ? exc_page_fault+0xee/0x100
[ 11.121918][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 11.121920][ C1] RIP: 0033:0x7f9066f8654e
[ 11.121923][ C1] 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
[ 11.121925][ C1] RSP: 002b:00007ffec60b9840 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 11.121927][ C1] RAX: ffffffffffffffda RBX: 0000000000000040 RCX: 00007f9066f8654e
[ 11.121929][ C1] RDX: 0000000000000040 RSI: 000055613ea030a4 RDI: 0000000000000005
[ 11.121929][ C1] RBP: 00007ffec60b9850 R08: 000055613ea15320 R09: 0000000000000010
[ 11.121930][ C1] R10: 0000000000000000 R11: 0000000000000202 R12: 431bde82d7b634db
[ 11.121931][ C1] R13: 0000000000000000 R14: 000055613ea163e0 R15: 000055613ea030a0
[ 11.121937][ C1]
[ 11.198999][ T291] br0: port 1(vxlan0) entered disabled state
[ 11.222695][ T292] br0: port 1(vxlan0) entered blocking state
[ 11.222871][ T292] br0: port 1(vxlan0) entered forwarding state
[ 11.288228][ T294] br0: port 1(vxlan0) entered disabled state
[ 11.317280][ T295] br0: port 1(vxlan0) entered blocking state
[ 11.317495][ T295] br0: port 1(vxlan0) entered forwarding state
[ 11.563030][ T69] veth-tap: left allmulticast mode
[ 11.563249][ T69] veth-tap: left promiscuous mode
[ 11.563597][ T69] br0: port 2(veth-tap) entered disabled state
[ 11.565133][ T69] vxlan0: left allmulticast mode
[ 11.565250][ T69] vxlan0: left promiscuous mode
[ 11.565430][ T69] br0: port 1(vxlan0) entered disabled state
[ 11.608888][ T69] br0: port 1(vxlan0) entered disabled state
[ 11.611593][ T69] vxlan0 (unregistering): left allmulticast mode
[ 11.611766][ T69] vxlan0 (unregistering): left promiscuous mode
[ 11.611921][ T69] br0: port 1(vxlan0) entered disabled state
[ 11.698485][ T69] veth-tap: left allmulticast mode
[ 11.698675][ T69] veth-tap: left promiscuous mode
[ 11.698928][ T69] br0: port 2(veth-tap) entered disabled state