[ 788.244208][T21870] br1: port 1(vx1) entered blocking state [ 788.245400][T21870] br1: port 1(vx1) entered disabled state [ 788.245573][T21870] vx1: entered allmulticast mode [ 788.247047][T21870] vx1: entered promiscuous mode [ 788.247631][T21870] br1: port 1(vx1) entered blocking state [ 788.247779][T21870] br1: port 1(vx1) entered forwarding state [ 788.273980][T21871] br1: port 2(veth1) entered blocking state [ 788.274171][T21871] br1: port 2(veth1) entered disabled state [ 788.274365][T21871] veth1: entered allmulticast mode [ 788.275832][T21871] veth1: entered promiscuous mode [ 788.308833][ T3324] br1: port 2(veth1) entered blocking state [ 788.309066][ T3324] br1: port 2(veth1) entered forwarding state [ 788.368499][T21874] br1: port 3(veth2) entered blocking state [ 788.368747][T21874] br1: port 3(veth2) entered disabled state [ 788.368996][T21874] veth2: entered allmulticast mode [ 788.370550][T21874] veth2: entered promiscuous mode [ 788.394945][ T3578] br1: port 3(veth2) entered blocking state [ 788.395140][ T3578] br1: port 3(veth2) entered forwarding state [ 789.506567][T21927] br2: port 1(w1) entered blocking state [ 789.506791][T21927] br2: port 1(w1) entered disabled state [ 789.507006][T21927] w1: entered allmulticast mode [ 789.509351][T21927] w1: entered promiscuous mode [ 789.539176][T21928] br2: port 1(w1) entered blocking state [ 789.539357][T21928] br2: port 1(w1) entered forwarding state [ 789.674957][T21933] br2: port 2(vx2) entered blocking state [ 789.675168][T21933] br2: port 2(vx2) entered disabled state [ 789.676002][T21933] vx2: entered allmulticast mode [ 789.677551][T21933] vx2: entered promiscuous mode [ 789.678147][T21933] br2: port 2(vx2) entered blocking state [ 789.678340][T21933] br2: port 2(vx2) entered forwarding state [ 790.451538][T21965] br2: port 1(w1) entered blocking state [ 790.451757][T21965] br2: port 1(w1) entered disabled state [ 790.451974][T21965] w1: entered allmulticast mode [ 790.454052][T21965] w1: entered promiscuous mode [ 790.484128][T21966] br2: port 1(w1) entered blocking state [ 790.484304][T21966] br2: port 1(w1) entered forwarding state [ 790.630724][T21971] br2: port 2(vx2) entered blocking state [ 790.630895][T21971] br2: port 2(vx2) entered disabled state [ 790.631060][T21971] vx2: entered allmulticast mode [ 790.632551][T21971] vx2: entered promiscuous mode [ 790.633123][T21971] br2: port 2(vx2) entered blocking state [ 790.633264][T21971] br2: port 2(vx2) entered forwarding state [ 791.065832][ C1] [ 791.066080][ C1] ============================= [ 791.066224][ C1] WARNING: suspicious RCU usage [ 791.066709][ C1] 7.2.0-rc2-virtme #1 Not tainted [ 791.066864][ C1] ----------------------------- [ 791.066999][ C1] drivers/net/vxlan/vxlan_core.c:872 suspicious rcu_dereference_protected() usage! [ 791.067229][ C1] [ 791.067229][ C1] other info that might help us debug this: [ 791.067229][ C1] [ 791.067504][ C1] [ 791.067504][ C1] rcu_scheduler_active = 2, debug_locks = 1 [ 791.067716][ C1] 3 locks held by ksoftirqd/1/23: [ 791.067856][ C1] #0: ffffffff9017dd40 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 791.068105][ C1] #1: ffffffff9017dd40 (rcu_read_lock){....}-{1:3}, at: ip6_input+0xa1/0x570 [ 791.068356][ C1] #2: ff1100000c7d2f68 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop+0x5dc/0x9a0 [vxlan] [ 791.068641][ C1] [ 791.068641][ C1] stack backtrace: [ 791.068816][ C1] CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 7.2.0-rc2-virtme #1 PREEMPT(full) [ 791.068819][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 791.068821][ C1] Call Trace: [ 791.068822][ C1] [ 791.068825][ C1] dump_stack_lvl+0x6f/0xa0 [ 791.068830][ C1] lockdep_rcu_suspicious.cold+0x37/0x89 [ 791.068836][ C1] vxlan_fdb_create+0xe1b/0x1a70 [vxlan] [ 791.068841][ C1] ? vxlan_find_mac_rcu+0x578/0x6b0 [vxlan] [ 791.068847][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 791.068851][ C1] ? find_held_lock+0x2b/0x80 [ 791.068854][ C1] ? vxlan_open+0x340/0x340 [vxlan] [ 791.068858][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 791.068863][ C1] vxlan_fdb_update+0x208/0x3e0 [vxlan] [ 791.068870][ C1] ? vxlan_fdb_create+0x1a70/0x1a70 [vxlan] [ 791.068873][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 791.068876][ C1] ? do_raw_spin_lock+0x131/0x280 [ 791.068880][ C1] vxlan_snoop+0x6ba/0x9a0 [vxlan] [ 791.068889][ C1] vxlan_rcv+0x172e/0x2c20 [vxlan] [ 791.068898][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan] [ 791.068905][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 791.068908][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 791.068910][ C1] ? ip6_protocol_deliver_rcu+0xa78/0x1480 [ 791.068914][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan] [ 791.068918][ C1] ? udpv6_queue_rcv_one_skb+0x653/0xbf0 [ 791.068920][ C1] udpv6_queue_rcv_one_skb+0x653/0xbf0 [ 791.068924][ C1] udp6_unicast_rcv_skb+0x2b3/0x390 [ 791.068926][ C1] ip6_protocol_deliver_rcu+0x15c/0x1480 [ 791.068933][ C1] ip6_input_finish+0x196/0x590 [ 791.068936][ C1] ip6_input+0x130/0x570 [ 791.068938][ C1] ? ip6_input_finish+0x590/0x590 [ 791.068941][ C1] ? ip6_rcv_core+0xded/0x1be0 [ 791.068946][ C1] ipv6_rcv+0x3c1/0x5a0 [ 791.068948][ C1] ? ip6_rcv_core+0x1be0/0x1be0 [ 791.068952][ C1] ? mark_usage+0x61/0x170 [ 791.068954][ C1] ? __lock_acquire+0x518/0xc20 [ 791.068958][ C1] ? process_backlog+0x561/0x1490 [ 791.068960][ C1] __netif_receive_skb_one_core+0xfc/0x180 [ 791.068963][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 791.068965][ C1] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 791.068968][ C1] ? rcu_is_watching+0x15/0xd0 [ 791.068974][ C1] process_backlog+0x2bc/0x1490 [ 791.068979][ C1] __napi_poll+0xa7/0x3b0 [ 791.068982][ C1] net_rx_action+0x513/0xf50 [ 791.068988][ C1] ? __napi_poll+0x3b0/0x3b0 [ 791.068990][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 791.068995][ C1] ? trace_irq_enable.constprop.0+0x9b/0x160 [ 791.069001][ C1] ? __schedule+0xf9e/0x20e0 [ 791.069006][ C1] ? rcu_is_watching+0x15/0xd0 [ 791.069009][ C1] handle_softirqs+0x1d8/0x8f0 [ 791.069015][ C1] ? _local_bh_enable+0xd0/0xd0 [ 791.069018][ C1] ? rcu_is_watching+0x15/0xd0 [ 791.069021][ C1] run_ksoftirqd+0x39/0x60 [ 791.069023][ C1] smpboot_thread_fn+0x2fb/0x9b0 [ 791.069028][ C1] ? sort_range+0x20/0x20 [ 791.069029][ C1] kthread+0x367/0x460 [ 791.069031][ C1] ? trace_irq_enable.constprop.0+0x9b/0x160 [ 791.069033][ C1] ? kthread_affine_node+0x330/0x330 [ 791.069035][ C1] ret_from_fork+0x474/0x6b0 [ 791.069040][ C1] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 791.069043][ C1] ? __switch_to+0x5a3/0xe00 [ 791.069047][ C1] ? kthread_affine_node+0x330/0x330 [ 791.069049][ C1] ret_from_fork_asm+0x11/0x20 [ 791.069058][ C1] [ 845.591530][T22325] veth3: entered promiscuous mode [ 858.181578][T22814] veth3: left promiscuous mode [ 875.672860][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 875.773854][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 875.874318][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 875.974715][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 876.075109][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 876.175512][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 876.275918][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 876.376319][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 876.476728][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 876.577155][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 924.672696][ C0] net_ratelimit: 10 callbacks suppressed [ 924.672707][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 924.773297][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 924.873730][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 924.974118][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 925.074506][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 925.174889][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 925.275298][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 925.375709][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 925.476084][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 925.576465][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 926.868481][T23831] vx1: left allmulticast mode [ 926.868705][T23831] vx1: left promiscuous mode [ 926.869006][T23831] br1: port 1(vx1) entered disabled state [ 931.985081][T23836] br1: port 1(vx1) entered blocking state [ 931.985264][T23836] br1: port 1(vx1) entered disabled state [ 931.985458][T23836] vx1: entered allmulticast mode [ 931.986942][T23836] vx1: entered promiscuous mode [ 931.987531][T23836] br1: port 1(vx1) entered blocking state [ 931.987676][T23836] br1: port 1(vx1) entered forwarding state [ 986.836582][T24131] veth3: entered promiscuous mode [ 998.873185][T24620] veth3: left promiscuous mode [ 999.109805][ T12] vx2: left allmulticast mode [ 999.109997][ T12] vx2: left promiscuous mode [ 999.110261][ T12] br2: port 2(vx2) entered disabled state [ 999.115544][ T12] w1: left allmulticast mode [ 999.115725][ T12] w1: left promiscuous mode [ 999.115987][ T12] br2: port 1(w1) entered disabled state [ 999.233401][ T12] vx2: left allmulticast mode [ 999.233687][ T12] vx2: left promiscuous mode [ 999.234064][ T12] br2: port 2(vx2) entered disabled state [ 999.236720][ T12] w1: left allmulticast mode [ 999.236848][ T12] w1: left promiscuous mode [ 999.237042][ T12] br2: port 1(w1) entered disabled state [ 999.763124][T24661] br1: port 3(veth2) entered disabled state [ 999.787953][T24662] veth2: left allmulticast mode [ 999.788108][T24662] veth2: left promiscuous mode [ 999.788329][T24662] br1: port 3(veth2) entered disabled state [ 999.832001][T24664] br1: port 2(veth1) entered disabled state [ 999.858992][T24665] veth1: left allmulticast mode [ 999.859140][T24665] veth1: left promiscuous mode [ 999.860074][T24665] br1: port 2(veth1) entered disabled state [ 999.888095][T24666] vx1: left allmulticast mode [ 999.888240][T24666] vx1: left promiscuous mode [ 999.888467][T24666] br1: port 1(vx1) entered disabled state