[ 996.450351][T22313] br1: port 1(vx1) entered blocking state [ 996.450530][T22313] br1: port 1(vx1) entered disabled state [ 996.450704][T22313] vx1: entered allmulticast mode [ 996.452181][T22313] vx1: entered promiscuous mode [ 996.452801][T22313] br1: port 1(vx1) entered blocking state [ 996.452945][T22313] br1: port 1(vx1) entered forwarding state [ 996.477953][T22314] br1: port 2(veth1) entered blocking state [ 996.478190][T22314] br1: port 2(veth1) entered disabled state [ 996.478435][T22314] veth1: entered allmulticast mode [ 996.479988][T22314] veth1: entered promiscuous mode [ 996.510410][ T199] br1: port 2(veth1) entered blocking state [ 996.510610][ T199] br1: port 2(veth1) entered forwarding state [ 996.567208][T22317] br1: port 3(veth2) entered blocking state [ 996.567428][T22317] br1: port 3(veth2) entered disabled state [ 996.567645][T22317] veth2: entered allmulticast mode [ 996.569565][T22317] veth2: entered promiscuous mode [ 996.593184][ T199] br1: port 3(veth2) entered blocking state [ 996.593416][ T199] br1: port 3(veth2) entered forwarding state [ 997.708247][T22370] br2: port 1(w1) entered blocking state [ 997.708469][T22370] br2: port 1(w1) entered disabled state [ 997.708690][T22370] w1: entered allmulticast mode [ 997.710884][T22370] w1: entered promiscuous mode [ 997.733662][T22371] br2: port 1(w1) entered blocking state [ 997.733843][T22371] br2: port 1(w1) entered forwarding state [ 997.861276][T22376] br2: port 2(vx2) entered blocking state [ 997.861483][T22376] br2: port 2(vx2) entered disabled state [ 997.861717][T22376] vx2: entered allmulticast mode [ 997.863780][T22376] vx2: entered promiscuous mode [ 997.864397][T22376] br2: port 2(vx2) entered blocking state [ 997.864587][T22376] br2: port 2(vx2) entered forwarding state [ 998.708525][T22408] br2: port 1(w1) entered blocking state [ 998.708769][T22408] br2: port 1(w1) entered disabled state [ 998.708986][T22408] w1: entered allmulticast mode [ 998.711289][T22408] w1: entered promiscuous mode [ 998.744517][T22409] br2: port 1(w1) entered blocking state [ 998.744688][T22409] br2: port 1(w1) entered forwarding state [ 998.891864][T22414] br2: port 2(vx2) entered blocking state [ 998.892093][T22414] br2: port 2(vx2) entered disabled state [ 998.892315][T22414] vx2: entered allmulticast mode [ 998.894614][T22414] vx2: entered promiscuous mode [ 998.895436][T22414] br2: port 2(vx2) entered blocking state [ 998.895633][T22414] br2: port 2(vx2) entered forwarding state [ 1000.456140][ C1] [ 1000.456396][ C1] ============================= [ 1000.456545][ C1] WARNING: suspicious RCU usage [ 1000.456682][ C1] 7.2.0-rc1-virtme #1 Not tainted [ 1000.457133][ C1] ----------------------------- [ 1000.457268][ C1] drivers/net/vxlan/vxlan_core.c:872 suspicious rcu_dereference_protected() usage! [ 1000.457500][ C1] [ 1000.457500][ C1] other info that might help us debug this: [ 1000.457500][ C1] [ 1000.457787][ C1] [ 1000.457787][ C1] rcu_scheduler_active = 2, debug_locks = 1 [ 1000.457995][ C1] 3 locks held by ksoftirqd/1/23: [ 1000.458134][ C1] #0: ffffffff8b57de40 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 1000.458389][ C1] #1: ffffffff8b57de40 (rcu_read_lock){....}-{1:3}, at: ip6_input+0xa1/0x570 [ 1000.458649][ C1] #2: ff11000012f0af68 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop+0x5dc/0x9a0 [vxlan] [ 1000.458945][ C1] [ 1000.458945][ C1] stack backtrace: [ 1000.459114][ C1] CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 7.2.0-rc1-virtme #1 PREEMPT(full) [ 1000.459117][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1000.459119][ C1] Call Trace: [ 1000.459121][ C1] [ 1000.459123][ C1] dump_stack_lvl+0x6f/0xa0 [ 1000.459129][ C1] lockdep_rcu_suspicious.cold+0x37/0x89 [ 1000.459134][ C1] vxlan_fdb_create+0xe1b/0x1a70 [vxlan] [ 1000.459140][ C1] ? vxlan_find_mac_rcu+0x578/0x6b0 [vxlan] [ 1000.459146][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 1000.459150][ C1] ? find_held_lock+0x2b/0x80 [ 1000.459153][ C1] ? vxlan_open+0x340/0x340 [vxlan] [ 1000.459158][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 1000.459163][ C1] vxlan_fdb_update+0x208/0x3e0 [vxlan] [ 1000.459169][ C1] ? vxlan_fdb_create+0x1a70/0x1a70 [vxlan] [ 1000.459173][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 1000.459176][ C1] ? do_raw_spin_lock+0x131/0x280 [ 1000.459180][ C1] vxlan_snoop+0x6ba/0x9a0 [vxlan] [ 1000.459188][ C1] vxlan_rcv+0x172e/0x2c20 [vxlan] [ 1000.459196][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan] [ 1000.459203][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 1000.459206][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 1000.459208][ C1] ? ip6_protocol_deliver_rcu+0xa78/0x1480 [ 1000.459211][ C1] ? encap_bypass_if_local+0x290/0x290 [vxlan] [ 1000.459215][ C1] ? udpv6_queue_rcv_one_skb+0x653/0xbf0 [ 1000.459219][ C1] udpv6_queue_rcv_one_skb+0x653/0xbf0 [ 1000.459222][ C1] udp6_unicast_rcv_skb+0x2b3/0x390 [ 1000.459226][ C1] ip6_protocol_deliver_rcu+0x15c/0x1480 [ 1000.459233][ C1] ip6_input_finish+0x196/0x590 [ 1000.459235][ C1] ip6_input+0x130/0x570 [ 1000.459237][ C1] ? ip6_input_finish+0x590/0x590 [ 1000.459241][ C1] ? ip6_rcv_core+0xded/0x1be0 [ 1000.459245][ C1] ipv6_rcv+0x3c1/0x5a0 [ 1000.459247][ C1] ? ip6_rcv_core+0x1be0/0x1be0 [ 1000.459251][ C1] ? mark_usage+0x61/0x170 [ 1000.459253][ C1] ? __lock_acquire+0x518/0xc20 [ 1000.459257][ C1] ? process_backlog+0x561/0x1490 [ 1000.459259][ C1] __netif_receive_skb_one_core+0xfc/0x180 [ 1000.459261][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 1000.459264][ C1] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 1000.459266][ C1] ? rcu_is_watching+0x15/0xd0 [ 1000.459272][ C1] process_backlog+0x2bc/0x1490 [ 1000.459277][ C1] __napi_poll+0xa7/0x3b0 [ 1000.459280][ C1] net_rx_action+0x513/0xf50 [ 1000.459285][ C1] ? __napi_poll+0x3b0/0x3b0 [ 1000.459288][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 1000.459292][ C1] ? trace_irq_enable.constprop.0+0x9b/0x160 [ 1000.459298][ C1] ? __schedule+0xf9e/0x20e0 [ 1000.459302][ C1] ? rcu_is_watching+0x15/0xd0 [ 1000.459306][ C1] handle_softirqs+0x1d8/0x8f0 [ 1000.459311][ C1] ? _local_bh_enable+0xd0/0xd0 [ 1000.459314][ C1] ? rcu_is_watching+0x15/0xd0 [ 1000.459317][ C1] run_ksoftirqd+0x39/0x60 [ 1000.459319][ C1] smpboot_thread_fn+0x2fb/0x9b0 [ 1000.459323][ C1] ? sort_range+0x20/0x20 [ 1000.459325][ C1] kthread+0x367/0x460 [ 1000.459327][ C1] ? trace_irq_enable.constprop.0+0x9b/0x160 [ 1000.459329][ C1] ? kthread_affine_node+0x330/0x330 [ 1000.459331][ C1] ret_from_fork+0x474/0x6b0 [ 1000.459336][ C1] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 1000.459339][ C1] ? __switch_to+0x5a3/0xe00 [ 1000.459343][ C1] ? kthread_affine_node+0x330/0x330 [ 1000.459345][ C1] ret_from_fork_asm+0x11/0x20 [ 1000.459353][ C1] [ 1054.094889][T22768] veth3: entered promiscuous mode [ 1066.773433][T23257] veth3: left promiscuous mode [ 1084.224148][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1084.324653][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1084.425248][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1084.525561][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1084.625887][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1084.726211][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1084.826526][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1084.926869][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1085.027212][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1085.127541][ C3] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.131255][ C0] net_ratelimit: 10 callbacks suppressed [ 1133.131266][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.232721][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.333172][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.433610][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.534088][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.634508][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.734926][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.835343][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1133.935746][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1134.036541][ C0] vxlan: non-ECT from 2001:0db8:0004:0000:0000:0000:0000:0001 [ 1135.294484][T24274] vx1: left allmulticast mode [ 1135.294702][T24274] vx1: left promiscuous mode [ 1135.295000][T24274] br1: port 1(vx1) entered disabled state [ 1140.411001][T24279] br1: port 1(vx1) entered blocking state [ 1140.411231][T24279] br1: port 1(vx1) entered disabled state [ 1140.411456][T24279] vx1: entered allmulticast mode [ 1140.412928][T24279] vx1: entered promiscuous mode [ 1140.413484][T24279] br1: port 1(vx1) entered blocking state [ 1140.413656][T24279] br1: port 1(vx1) entered forwarding state [ 1195.376492][T24574] veth3: entered promiscuous mode [ 1208.007066][T25063] veth3: left promiscuous mode [ 1208.247574][ T12] vx2: left allmulticast mode [ 1208.247889][ T12] vx2: left promiscuous mode [ 1208.248184][ T12] br2: port 2(vx2) entered disabled state [ 1208.250112][ T12] w1: left allmulticast mode [ 1208.250324][ T12] w1: left promiscuous mode [ 1208.250594][ T12] br2: port 1(w1) entered disabled state [ 1208.382758][ T12] vx2: left allmulticast mode [ 1208.382957][ T12] vx2: left promiscuous mode [ 1208.383230][ T12] br2: port 2(vx2) entered disabled state [ 1208.385310][ T12] w1: left allmulticast mode [ 1208.385498][ T12] w1: left promiscuous mode [ 1208.385860][ T12] br2: port 1(w1) entered disabled state [ 1208.943709][T25104] br1: port 3(veth2) entered disabled state [ 1208.967915][T25105] veth2: left allmulticast mode [ 1208.968074][T25105] veth2: left promiscuous mode [ 1208.968289][T25105] br1: port 3(veth2) entered disabled state [ 1209.039978][T25107] br1: port 2(veth1) entered disabled state [ 1209.061294][T25108] veth1: left allmulticast mode [ 1209.061445][T25108] veth1: left promiscuous mode [ 1209.061653][T25108] br1: port 2(veth1) entered disabled state [ 1209.087446][T25109] vx1: left allmulticast mode [ 1209.087636][T25109] vx1: left promiscuous mode [ 1209.087931][T25109] br1: port 1(vx1) entered disabled state