[ 1552.927658][ T8475] eth0: renamed from r1h1 [ 1553.002754][ T8477] eth0: renamed from r2h1 [ 1553.101594][ T8480] eth2: renamed from r2h2 [ 1553.196851][ T8483] eth1: renamed from r2r1 [ 1553.326644][ T8488] br0: port 1(eth0) entered blocking state [ 1553.326861][ T8488] br0: port 1(eth0) entered disabled state [ 1553.327107][ T8488] eth0: entered allmulticast mode [ 1553.328229][ T8488] eth0: entered promiscuous mode [ 1553.329652][ T723] br0: port 1(eth0) entered blocking state [ 1553.329854][ T723] br0: port 1(eth0) entered forwarding state [ 1553.349062][ T8489] br0: port 2(eth1) entered blocking state [ 1553.349237][ T8489] br0: port 2(eth1) entered disabled state [ 1553.349418][ T8489] eth1: entered allmulticast mode [ 1553.350449][ T8489] eth1: entered promiscuous mode [ 1553.351319][ T9402] br0: port 2(eth1) entered blocking state [ 1553.351478][ T9402] br0: port 2(eth1) entered forwarding state [ 1565.340244][ T12] eth1: left allmulticast mode [ 1565.340421][ T12] eth1: left promiscuous mode [ 1565.340637][ T12] br0: port 2(eth1) entered disabled state [ 1565.342704][ T12] eth0: left allmulticast mode [ 1565.342839][ T12] eth0: left promiscuous mode [ 1565.343035][ T12] br0: port 1(eth0) entered disabled state [ 1567.131451][ T8694] eth0: renamed from r1h1 [ 1567.196420][ T8696] eth0: renamed from r2h1 [ 1567.293432][ T8699] eth2: renamed from r2h2 [ 1567.387659][ T8702] eth1: renamed from r2r1 [ 1567.743061][ T8717] br0: port 1(eth0) entered blocking state [ 1567.743285][ T8717] br0: port 1(eth0) entered disabled state [ 1567.743514][ T8717] eth0: entered allmulticast mode [ 1567.744634][ T8717] eth0: entered promiscuous mode [ 1567.745918][ T38] br0: port 1(eth0) entered blocking state [ 1567.746095][ T38] br0: port 1(eth0) entered forwarding state [ 1567.766488][ T8718] br0: port 2(eth1) entered blocking state [ 1567.766665][ T8718] br0: port 2(eth1) entered disabled state [ 1567.766827][ T8718] eth1: entered allmulticast mode [ 1567.767900][ T8718] eth1: entered promiscuous mode [ 1567.768753][ T9402] br0: port 2(eth1) entered blocking state [ 1567.768922][ T9402] br0: port 2(eth1) entered forwarding state [ 1579.766084][ T12] eth1: left allmulticast mode [ 1579.766263][ T12] eth1: left promiscuous mode [ 1579.766474][ T12] br0: port 2(eth1) entered disabled state [ 1579.769974][ T12] eth0: left allmulticast mode [ 1579.770132][ T12] eth0: left promiscuous mode [ 1579.770334][ T12] br0: port 1(eth0) entered disabled state [ 1581.569769][ T8925] eth0: renamed from r1h1 [ 1581.642707][ T8927] eth0: renamed from r2h1 [ 1581.741398][ T8930] eth2: renamed from r2h2 [ 1581.835413][ T8933] eth1: renamed from r2r1 [ 1581.957624][ T8938] br0: port 1(eth0) entered blocking state [ 1581.957812][ T8938] br0: port 1(eth0) entered disabled state [ 1581.957983][ T8938] eth0: entered allmulticast mode [ 1581.959072][ T8938] eth0: entered promiscuous mode [ 1581.960262][ T9402] br0: port 1(eth0) entered blocking state [ 1581.960425][ T9402] br0: port 1(eth0) entered forwarding state [ 1581.988558][ T8939] br0: port 2(eth1) entered blocking state [ 1581.988732][ T8939] br0: port 2(eth1) entered disabled state [ 1581.988898][ T8939] eth1: entered allmulticast mode [ 1581.989934][ T8939] eth1: entered promiscuous mode [ 1581.991017][ T9402] br0: port 2(eth1) entered blocking state [ 1581.991193][ T9402] br0: port 2(eth1) entered forwarding state [ 1584.745606][ T8986] [ 1584.745748][ T8986] ============================= [ 1584.745928][ T8986] WARNING: suspicious RCU usage [ 1584.746122][ T8986] 7.0.0-rc3-virtme #1 Not tainted [ 1584.746297][ T8986] ----------------------------- [ 1584.746469][ T8986] net/ipv6/ip6_fib.c:111 suspicious rcu_dereference_protected() usage! [ 1584.746712][ T8986] [ 1584.746712][ T8986] other info that might help us debug this: [ 1584.746712][ T8986] [ 1584.747001][ T8986] [ 1584.747001][ T8986] rcu_scheduler_active = 2, debug_locks = 1 [ 1584.747245][ T8986] 1 lock held by ip/8986: [ 1584.747389][ T8986] #0: ffffffff998a2728 (rtnl_mutex){+.+.}-{4:4}, at: rtm_new_nexthop+0x1a6/0x8c0 [ 1584.747680][ T8986] [ 1584.747680][ T8986] stack backtrace: [ 1584.747888][ T8986] CPU: 2 UID: 0 PID: 8986 Comm: ip Not tainted 7.0.0-rc3-virtme #1 PREEMPT(full) [ 1584.747892][ T8986] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1584.747894][ T8986] Call Trace: [ 1584.747896][ T8986] [ 1584.747898][ T8986] dump_stack_lvl+0x6f/0xa0 [ 1584.747905][ T8986] lockdep_rcu_suspicious.cold+0x4f/0xad [ 1584.747910][ T8986] fib6_update_sernum+0xfb/0x130 [ 1584.747915][ T8986] nh_rt_cache_flush+0x8d/0x380 [ 1584.747919][ T8986] replace_nexthop+0x347/0x6e0 [ 1584.747923][ T8986] insert_nexthop+0x41e/0x7a0 [ 1584.747926][ T8986] ? nexthop_create+0x307/0x770 [ 1584.747929][ T8986] rtm_new_nexthop+0x3a0/0x8c0 [ 1584.747933][ T8986] ? insert_nexthop+0x7a0/0x7a0 [ 1584.747934][ T8986] ? lock_acquire.part.0+0xbc/0x260 [ 1584.747937][ T8986] ? find_held_lock+0x2b/0x80 [ 1584.747944][ T8986] ? lock_acquire.part.0+0xbc/0x260 [ 1584.747945][ T8986] ? find_held_lock+0x2b/0x80 [ 1584.747951][ T8986] ? find_held_lock+0x2b/0x80 [ 1584.747953][ T8986] ? insert_nexthop+0x7a0/0x7a0 [ 1584.747955][ T8986] ? __lock_release.isra.0+0x59/0x170 [ 1584.747958][ T8986] ? insert_nexthop+0x7a0/0x7a0 [ 1584.747960][ T8986] rtnetlink_rcv_msg+0x6fe/0xb90 [ 1584.747965][ T8986] ? rtnl_fdb_dump+0x620/0x620 [ 1584.747967][ T8986] ? __lock_acquire+0x577/0xc10 [ 1584.747971][ T8986] ? lock_acquire.part.0+0xbc/0x260 [ 1584.747972][ T8986] ? find_held_lock+0x2b/0x80 [ 1584.747976][ T8986] netlink_rcv_skb+0x123/0x380 [ 1584.747978][ T8986] ? rtnl_fdb_dump+0x620/0x620 [ 1584.747982][ T8986] ? netlink_ack+0xce0/0xce0 [ 1584.747987][ T8986] ? netlink_deliver_tap+0xc5/0x330 [ 1584.747988][ T8986] ? netlink_deliver_tap+0x13f/0x330 [ 1584.747992][ T8986] netlink_unicast+0x4a3/0x770 [ 1584.747995][ T8986] ? netlink_attachskb+0x810/0x810 [ 1584.747996][ T8986] ? __alloc_skb+0x4c4/0x5f0 [ 1584.747999][ T8986] ? napi_skb_cache_get+0x7a0/0x7a0 [ 1584.748001][ T8986] ? lock_acquire.part.0+0xbc/0x260 [ 1584.748003][ T8986] ? __lock_acquire+0x577/0xc10 [ 1584.748006][ T8986] netlink_sendmsg+0x735/0xc60 [ 1584.748009][ T8986] ? netlink_unicast+0x770/0x770 [ 1584.748013][ T8986] ? __might_fault+0x97/0x140 [ 1584.748018][ T8986] ____sys_sendmsg+0x419/0x850 [ 1584.748021][ T8986] ? copy_msghdr_from_user+0x270/0x430 [ 1584.748022][ T8986] ? get_timestamp.constprop.0+0x390/0x390 [ 1584.748024][ T8986] ? move_addr_to_kernel+0x40/0x40 [ 1584.748027][ T8986] ? stack_depot_save_flags+0x30d/0x6e0 [ 1584.748031][ T8986] ? rcu_read_lock_any_held+0x3c/0x90 [ 1584.748036][ T8986] ___sys_sendmsg+0xfd/0x180 [ 1584.748038][ T8986] ? __call_rcu_common.constprop.0+0xa6/0xa00 [ 1584.748041][ T8986] ? copy_msghdr_from_user+0x430/0x430 [ 1584.748058][ T8986] __sys_sendmsg+0x124/0x1c0 [ 1584.748061][ T8986] ? __sys_sendmsg_sock+0x20/0x20 [ 1584.748063][ T8986] ? lockdep_hardirqs_on+0x84/0x130 [ 1584.748067][ T8986] ? __call_rcu_common.constprop.0+0x3bd/0xa00 [ 1584.748072][ T8986] ? do_raw_spin_unlock+0x59/0x250 [ 1584.748074][ T8986] ? rcu_is_watching+0x15/0xd0 [ 1584.748078][ T8986] do_syscall_64+0x117/0xfc0 [ 1584.748080][ T8986] ? exc_page_fault+0xaf/0xd0 [ 1584.748082][ T8986] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 1584.748085][ T8986] RIP: 0033:0x7f0fab2c0c5e [ 1584.748089][ T8986] Code: 4d 89 d8 e8 34 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 13 ff ff ff 0f 1f 00 f3 0f 1e fa [ 1584.748090][ T8986] RSP: 002b:00007ffe9e6d40b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 1584.748094][ T8986] RAX: ffffffffffffffda RBX: 000000000048a950 RCX: 00007f0fab2c0c5e [ 1584.748095][ T8986] RDX: 0000000000000000 RSI: 00007ffe9e6d4170 RDI: 0000000000000005 [ 1584.748096][ T8986] RBP: 00007ffe9e6d40c0 R08: 0000000000000000 R09: 0000000000000000 [ 1584.748097][ T8986] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe9e6d6895 [ 1584.748098][ T8986] R13: 0000000069b9a046 R14: 0000000000000008 R15: 000000000049c620 [ 1584.748104][ T8986] [ 1594.151300][ T12] eth1: left allmulticast mode [ 1594.151461][ T12] eth1: left promiscuous mode [ 1594.151681][ T12] br0: port 2(eth1) entered disabled state [ 1594.153004][ T12] eth0: left allmulticast mode [ 1594.153164][ T12] eth0: left promiscuous mode [ 1594.153359][ T12] br0: port 1(eth0) entered disabled state [ 1595.947543][ T9156] eth0: renamed from r1h1 [ 1596.025442][ T9158] eth0: renamed from r2h1 [ 1596.120604][ T9161] eth2: renamed from r2h2 [ 1596.215638][ T9164] eth1: renamed from r2r1 [ 1596.579118][ T9179] br0: port 1(eth0) entered blocking state [ 1596.579350][ T9179] br0: port 1(eth0) entered disabled state [ 1596.579573][ T9179] eth0: entered allmulticast mode [ 1596.580721][ T9179] eth0: entered promiscuous mode [ 1596.582004][ T38] br0: port 1(eth0) entered blocking state [ 1596.582215][ T38] br0: port 1(eth0) entered forwarding state [ 1596.602505][ T9180] br0: port 2(eth1) entered blocking state [ 1596.602688][ T9180] br0: port 2(eth1) entered disabled state [ 1596.602854][ T9180] eth1: entered allmulticast mode [ 1596.604117][ T9180] eth1: entered promiscuous mode [ 1596.605112][ T94] br0: port 2(eth1) entered blocking state [ 1596.605271][ T94] br0: port 2(eth1) entered forwarding state [ 1608.807364][ T12] eth1: left allmulticast mode [ 1608.807531][ T12] eth1: left promiscuous mode [ 1608.807741][ T12] br0: port 2(eth1) entered disabled state [ 1608.808882][ T12] eth0: left allmulticast mode [ 1608.809011][ T12] eth0: left promiscuous mode [ 1608.809360][ T12] br0: port 1(eth0) entered disabled state