[ 424.291412][T10475] gre: GRE over IPv4 demultiplexer driver
[ 424.736435][T10498] ip_gre: GRE over IPv4 tunneling driver
[ 440.191038][T11076] ip6_gre: GRE over IPv6 tunneling driver
[ 450.254953][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 452.237922][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 454.030913][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 455.671129][ C1]
[ 455.671310][ C1] =============================
[ 455.671458][ C1] WARNING: suspicious RCU usage
[ 455.671600][ C1] 7.2.0-rc1-virtme #1 Not tainted
[ 455.671741][ C1] -----------------------------
[ 455.672012][ C1] drivers/net/vxlan/vxlan_core.c:872 suspicious rcu_dereference_protected() usage!
[ 455.672260][ C1]
[ 455.672260][ C1] other info that might help us debug this:
[ 455.672260][ C1]
[ 455.672536][ C1]
[ 455.672536][ C1] rcu_scheduler_active = 2, debug_locks = 1
[ 455.672745][ C1] 8 locks held by kworker/1:1/68:
[ 455.672897][ C1] #0: ff11000008ebfb40 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 455.673193][ C1] #1: ffa0000000497d10 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 455.673513][ C1] #2: ff1100001a47ed30 (&idev->mc_lock){+.+.}-{4:4}, at: mld_ifc_work+0x2e/0x190
[ 455.673767][ C1] #3: ffffffffb4791ec0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x1c9/0xec0
[ 455.674030][ C1] #4: ffffffffb4791ec0 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0
[ 455.674366][ C1] #5: ffffffffb4791ec0 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490
[ 455.674618][ C1] #6: ffffffffb4791ec0 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish+0x2ba/0x610
[ 455.674907][ C1] #7: ff1100001a282fa8 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop+0x5dc/0x9a0 [vxlan]
[ 455.675203][ C1]
[ 455.675203][ C1] stack backtrace:
[ 455.675379][ C1] CPU: 1 UID: 0 PID: 68 Comm: kworker/1:1 Not tainted 7.2.0-rc1-virtme #1 PREEMPT(full)
[ 455.675382][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 455.675384][ C1] Workqueue: mld mld_ifc_work
[ 455.675387][ C1] Call Trace:
[ 455.675389][ C1]
[ 455.675391][ C1] dump_stack_lvl+0x6f/0xa0
[ 455.675396][ C1] lockdep_rcu_suspicious.cold+0x37/0x89
[ 455.675401][ C1] vxlan_fdb_create+0xe1b/0x1a70 [vxlan]
[ 455.675407][ C1] ? vxlan_find_mac_rcu+0x578/0x6b0 [vxlan]
[ 455.675413][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 455.675416][ C1] ? find_held_lock+0x2b/0x80
[ 455.675419][ C1] ? vxlan_open+0x340/0x340 [vxlan]
[ 455.675423][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 455.675428][ C1] vxlan_fdb_update+0x208/0x3e0 [vxlan]
[ 455.675435][ C1] ? vxlan_fdb_create+0x1a70/0x1a70 [vxlan]
[ 455.675438][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 455.675441][ C1] ? do_raw_spin_lock+0x131/0x280
[ 455.675445][ C1] vxlan_snoop+0x6ba/0x9a0 [vxlan]
[ 455.675451][ C1] ? __iptunnel_pull_header+0x33b/0x730
[ 455.675455][ C1] vxlan_rcv+0x172e/0x2c20 [vxlan]
[ 455.675459][ C1] ? fib_table_lookup+0xe88/0x18f0
[ 455.675465][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 455.675471][ C1] ? udp_lib_lport_inuse2+0x3d0/0x3d0
[ 455.675476][ C1] ? __udp4_lib_lookup+0x5f1/0x820
[ 455.675479][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan]
[ 455.675483][ C1] ? udp_queue_rcv_one_skb+0x645/0xb00
[ 455.675485][ C1] udp_queue_rcv_one_skb+0x645/0xb00
[ 455.675486][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 455.675488][ C1] ? down_read_killable_nested+0x282/0x600
[ 455.675491][ C1] udp_unicast_rcv_skb+0x366/0x450
[ 455.675494][ C1] ? udp_rcv+0xce3/0x1e30
[ 455.675496][ C1] udp_rcv+0xd01/0x1e30
[ 455.675500][ C1] ? udp_sk_rx_dst_set+0x90/0x90
[ 455.675504][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 455.675506][ C1] ? ip_local_deliver_finish+0x2ba/0x610
[ 455.675509][ C1] ip_protocol_deliver_rcu+0x82/0x350
[ 455.675513][ C1] ? process_backlog+0x561/0x1490
[ 455.675514][ C1] ip_local_deliver_finish+0x36f/0x610
[ 455.675516][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 455.675519][ C1] ip_local_deliver+0x184/0x4c0
[ 455.675521][ C1] ? ip_local_deliver_finish+0x610/0x610
[ 455.675524][ C1] ? ip_rcv_finish_core+0x6ed/0x14c0
[ 455.675529][ C1] ? process_backlog+0x561/0x1490
[ 455.675531][ C1] ip_rcv+0xdc/0x3d0
[ 455.675533][ C1] ? ip_local_deliver+0x4c0/0x4c0
[ 455.675535][ C1] ? validate_chain+0x38b/0xc20
[ 455.675538][ C1] ? mark_usage+0x61/0x170
[ 455.675541][ C1] ? __lock_acquire+0x518/0xc20
[ 455.675543][ C1] ? nbcon_context_try_acquire+0x2b7/0x600
[ 455.675547][ C1] __netif_receive_skb_one_core+0xfc/0x180
[ 455.675549][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 455.675551][ C1] ? __netif_receive_skb_list_core+0x9e0/0x9e0
[ 455.675553][ C1] ? rcu_is_watching+0x15/0xd0
[ 455.675559][ C1] process_backlog+0x2bc/0x1490
[ 455.675564][ C1] __napi_poll+0xa7/0x3b0
[ 455.675567][ C1] net_rx_action+0x513/0xf50
[ 455.675571][ C1] ? __napi_poll+0x3b0/0x3b0
[ 455.675573][ C1] ? validate_chain+0x38b/0xc20
[ 455.675582][ C1] ? __rwlock_init+0x150/0x150
[ 455.675584][ C1] ? mark_held_locks+0x40/0x70
[ 455.675587][ C1] handle_softirqs+0x1d8/0x8f0
[ 455.675592][ C1] ? _local_bh_enable+0xd0/0xd0
[ 455.675594][ C1] ? do_raw_spin_unlock+0x59/0x250
[ 455.675596][ C1] ? _raw_spin_unlock+0x2d/0x50
[ 455.675601][ C1] do_softirq+0xa9/0xe0
[ 455.675603][ C1]
[ 455.675604][ C1]
[ 455.675604][ C1] ? __dev_queue_xmit+0x956/0x1b70
[ 455.675606][ C1] __local_bh_enable_ip+0x113/0x140
[ 455.675608][ C1] __dev_queue_xmit+0x96b/0x1b70
[ 455.675611][ C1] ? __lock_acquire+0x518/0xc20
[ 455.675615][ C1] ? find_held_lock+0x2b/0x80
[ 455.675617][ C1] ? netdev_core_pick_tx+0x2c0/0x2c0
[ 455.675620][ C1] ? __asan_memcpy+0x3c/0x60
[ 455.675623][ C1] ? eth_header+0x14c/0x180
[ 455.675627][ C1] ? neigh_resolve_output.part.0+0x344/0x740
[ 455.675634][ C1] ip6_finish_output2+0x488/0x1310
[ 455.675638][ C1] ? ip6_xmit+0x2000/0x2000
[ 455.675639][ C1] ? find_held_lock+0x2b/0x80
[ 455.675642][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 455.675645][ C1] ? ip6_mtu+0x174/0x410
[ 455.675649][ C1] ip6_finish_output+0x701/0xe80
[ 455.675653][ C1] ip6_output+0x23f/0x7f0
[ 455.675655][ C1] ? ip6_finish_output+0xe80/0xe80
[ 455.675656][ C1] ? __lock_release.isra.0+0x6b/0x1a0
[ 455.675659][ C1] ? xfrm_bundle_lookup.constprop.0+0xba0/0xba0
[ 455.675661][ C1] ? mark_held_locks+0x40/0x70
[ 455.675665][ C1] ? __local_bh_enable_ip+0xa5/0x140
[ 455.675667][ C1] ? __local_bh_enable_ip+0xa5/0x140
[ 455.675669][ C1] ? icmp6_dst_alloc+0x317/0x4d0
[ 455.675672][ C1] mld_sendpack+0x9d6/0xec0
[ 455.675676][ C1] ? nf_hook.constprop.0+0x340/0x340
[ 455.675682][ C1] ? mld_send_cr+0x50f/0x820
[ 455.675685][ C1] mld_ifc_work+0x36/0x190
[ 455.675688][ C1] ? process_one_work+0xdb7/0x1410
[ 455.675689][ C1] process_one_work+0xdf8/0x1410
[ 455.675695][ C1] ? pwq_dec_nr_in_flight+0x710/0x710
[ 455.675696][ C1] ? lock_acquire.part.0+0xbc/0x260
[ 455.675703][ C1] worker_thread+0x4f1/0xd60
[ 455.675706][ C1] ? rescuer_thread+0x1320/0x1320
[ 455.675708][ C1] ? __kthread_parkme+0xbd/0x210
[ 455.675711][ C1] ? rescuer_thread+0x1320/0x1320
[ 455.675714][ C1] ? rescuer_thread+0x1320/0x1320
[ 455.675715][ C1] kthread+0x367/0x460
[ 455.675717][ C1] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 455.675720][ C1] ? kthread_affine_node+0x330/0x330
[ 455.675722][ C1] ret_from_fork+0x474/0x6b0
[ 455.675726][ C1] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 455.675730][ C1] ? __switch_to+0x5a3/0xe00
[ 455.675732][ C1] ? kthread_affine_node+0x330/0x330
[ 455.675734][ C1] ret_from_fork_asm+0x11/0x20
[ 455.675742][ C1]
[ 456.014923][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured!