[ 1797.832094][ T4117] eth0: renamed from r1h1 [ 1797.910493][ T4119] eth0: renamed from r2h1 [ 1798.017292][ T4122] eth2: renamed from r2h2 [ 1798.118257][ T4125] eth1: renamed from r2r1 [ 1798.255292][ T4130] br0: port 1(eth0) entered blocking state [ 1798.255507][ T4130] br0: port 1(eth0) entered disabled state [ 1798.255716][ T4130] eth0: entered allmulticast mode [ 1798.262623][ T4130] eth0: entered promiscuous mode [ 1798.264436][ T36] br0: port 1(eth0) entered blocking state [ 1798.264672][ T36] br0: port 1(eth0) entered forwarding state [ 1798.284430][ T4131] br0: port 2(eth1) entered blocking state [ 1798.284591][ T4131] br0: port 2(eth1) entered disabled state [ 1798.284746][ T4131] eth1: entered allmulticast mode [ 1798.285641][ T4131] eth1: entered promiscuous mode [ 1798.286853][T27890] br0: port 2(eth1) entered blocking state [ 1798.287018][T27890] br0: port 2(eth1) entered forwarding state [ 1810.617819][ T12] eth1: left allmulticast mode [ 1810.618199][ T12] eth1: left promiscuous mode [ 1810.618422][ T12] br0: port 2(eth1) entered disabled state [ 1810.621827][ T12] eth0: left allmulticast mode [ 1810.621968][ T12] eth0: left promiscuous mode [ 1810.622157][ T12] br0: port 1(eth0) entered disabled state [ 1812.868580][ T4336] eth0: renamed from r1h1 [ 1812.950323][ T4338] eth0: renamed from r2h1 [ 1813.053537][ T4341] eth2: renamed from r2h2 [ 1813.154836][ T4344] eth1: renamed from r2r1 [ 1813.535520][ T4359] br0: port 1(eth0) entered blocking state [ 1813.535705][ T4359] br0: port 1(eth0) entered disabled state [ 1813.535864][ T4359] eth0: entered allmulticast mode [ 1813.536772][ T4359] eth0: entered promiscuous mode [ 1813.538161][T27890] br0: port 1(eth0) entered blocking state [ 1813.538311][T27890] br0: port 1(eth0) entered forwarding state [ 1813.559191][ T4360] br0: port 2(eth1) entered blocking state [ 1813.559386][ T4360] br0: port 2(eth1) entered disabled state [ 1813.559603][ T4360] eth1: entered allmulticast mode [ 1813.560561][ T4360] eth1: entered promiscuous mode [ 1813.561865][T19933] br0: port 2(eth1) entered blocking state [ 1813.562060][T19933] br0: port 2(eth1) entered forwarding state [ 1825.895355][ T12] eth1: left allmulticast mode [ 1825.895519][ T12] eth1: left promiscuous mode [ 1825.895722][ T12] br0: port 2(eth1) entered disabled state [ 1825.897503][ T12] eth0: left allmulticast mode [ 1825.897636][ T12] eth0: left promiscuous mode [ 1825.897825][ T12] br0: port 1(eth0) entered disabled state [ 1828.190599][ T4566] eth0: renamed from r1h1 [ 1828.260510][ T4568] eth0: renamed from r2h1 [ 1828.360646][ T4571] eth2: renamed from r2h2 [ 1828.458418][ T4574] eth1: renamed from r2r1 [ 1828.588563][ T4579] br0: port 1(eth0) entered blocking state [ 1828.588728][ T4579] br0: port 1(eth0) entered disabled state [ 1828.588884][ T4579] eth0: entered allmulticast mode [ 1828.589784][ T4579] eth0: entered promiscuous mode [ 1828.591093][T27890] br0: port 1(eth0) entered blocking state [ 1828.591241][T27890] br0: port 1(eth0) entered forwarding state [ 1828.619316][ T4580] br0: port 2(eth1) entered blocking state [ 1828.619479][ T4580] br0: port 2(eth1) entered disabled state [ 1828.619641][ T4580] eth1: entered allmulticast mode [ 1828.620530][ T4580] eth1: entered promiscuous mode [ 1828.621760][ T36] br0: port 2(eth1) entered blocking state [ 1828.621903][ T36] br0: port 2(eth1) entered forwarding state [ 1831.476292][ T4627] [ 1831.476440][ T4627] ============================= [ 1831.476614][ T4627] WARNING: suspicious RCU usage [ 1831.476776][ T4627] 7.0.0-rc1-virtme #1 Not tainted [ 1831.476955][ T4627] ----------------------------- [ 1831.477119][ T4627] net/ipv6/ip6_fib.c:111 suspicious rcu_dereference_protected() usage! [ 1831.477338][ T4627] [ 1831.477338][ T4627] other info that might help us debug this: [ 1831.477338][ T4627] [ 1831.477613][ T4627] [ 1831.477613][ T4627] rcu_scheduler_active = 2, debug_locks = 1 [ 1831.477831][ T4627] 1 lock held by ip/4627: [ 1831.477975][ T4627] #0: ffffffff950a1d28 (rtnl_mutex){+.+.}-{4:4}, at: rtm_new_nexthop+0x1a6/0x8c0 [ 1831.478234][ T4627] [ 1831.478234][ T4627] stack backtrace: [ 1831.478423][ T4627] CPU: 2 UID: 0 PID: 4627 Comm: ip Not tainted 7.0.0-rc1-virtme #1 PREEMPT(full) [ 1831.478427][ T4627] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1831.478429][ T4627] Call Trace: [ 1831.478431][ T4627] [ 1831.478433][ T4627] dump_stack_lvl+0x6f/0xa0 [ 1831.478440][ T4627] lockdep_rcu_suspicious.cold+0x4f/0xad [ 1831.478445][ T4627] fib6_update_sernum+0xfb/0x130 [ 1831.478450][ T4627] nh_rt_cache_flush+0x8d/0x380 [ 1831.478454][ T4627] replace_nexthop+0x347/0x6e0 [ 1831.478458][ T4627] insert_nexthop+0x41e/0x7a0 [ 1831.478460][ T4627] ? nexthop_create+0x307/0x770 [ 1831.478463][ T4627] rtm_new_nexthop+0x3a0/0x8c0 [ 1831.478467][ T4627] ? insert_nexthop+0x7a0/0x7a0 [ 1831.478468][ T4627] ? lock_acquire.part.0+0xbc/0x260 [ 1831.478471][ T4627] ? find_held_lock+0x2b/0x80 [ 1831.478478][ T4627] ? lock_acquire.part.0+0xbc/0x260 [ 1831.478479][ T4627] ? find_held_lock+0x2b/0x80 [ 1831.478485][ T4627] ? find_held_lock+0x2b/0x80 [ 1831.478487][ T4627] ? insert_nexthop+0x7a0/0x7a0 [ 1831.478489][ T4627] ? __lock_release.isra.0+0x59/0x170 [ 1831.478492][ T4627] ? insert_nexthop+0x7a0/0x7a0 [ 1831.478494][ T4627] rtnetlink_rcv_msg+0x6fe/0xb90 [ 1831.478499][ T4627] ? rtnl_fdb_dump+0x620/0x620 [ 1831.478501][ T4627] ? __lock_acquire+0x577/0xc10 [ 1831.478511][ T4627] ? lock_acquire.part.0+0xbc/0x260 [ 1831.478513][ T4627] ? find_held_lock+0x2b/0x80 [ 1831.478516][ T4627] netlink_rcv_skb+0x123/0x380 [ 1831.478519][ T4627] ? rtnl_fdb_dump+0x620/0x620 [ 1831.478522][ T4627] ? netlink_ack+0xce0/0xce0 [ 1831.478527][ T4627] ? netlink_deliver_tap+0xc5/0x330 [ 1831.478529][ T4627] ? netlink_deliver_tap+0x13f/0x330 [ 1831.478533][ T4627] netlink_unicast+0x4a3/0x770 [ 1831.478536][ T4627] ? netlink_attachskb+0x810/0x810 [ 1831.478537][ T4627] ? __alloc_skb+0x4c4/0x5f0 [ 1831.478540][ T4627] ? napi_skb_cache_get+0x7a0/0x7a0 [ 1831.478542][ T4627] ? lock_acquire.part.0+0xbc/0x260 [ 1831.478544][ T4627] ? __lock_acquire+0x577/0xc10 [ 1831.478547][ T4627] netlink_sendmsg+0x735/0xc60 [ 1831.478550][ T4627] ? netlink_unicast+0x770/0x770 [ 1831.478553][ T4627] ? __might_fault+0x97/0x140 [ 1831.478559][ T4627] ____sys_sendmsg+0x419/0x850 [ 1831.478561][ T4627] ? copy_msghdr_from_user+0x270/0x430 [ 1831.478563][ T4627] ? get_timestamp.constprop.0+0x390/0x390 [ 1831.478564][ T4627] ? move_addr_to_kernel+0x40/0x40 [ 1831.478567][ T4627] ? stack_depot_save_flags+0x30d/0x6e0 [ 1831.478571][ T4627] ? rcu_read_lock_any_held+0x3c/0x90 [ 1831.478576][ T4627] ___sys_sendmsg+0xfd/0x180 [ 1831.478578][ T4627] ? __call_rcu_common.constprop.0+0xa6/0xa00 [ 1831.478581][ T4627] ? copy_msghdr_from_user+0x430/0x430 [ 1831.478595][ T4627] __sys_sendmsg+0x124/0x1c0 [ 1831.478597][ T4627] ? __sys_sendmsg_sock+0x20/0x20 [ 1831.478599][ T4627] ? lockdep_hardirqs_on+0x84/0x130 [ 1831.478603][ T4627] ? __call_rcu_common.constprop.0+0x3bd/0xa00 [ 1831.478608][ T4627] ? do_raw_spin_unlock+0x59/0x250 [ 1831.478610][ T4627] ? rcu_is_watching+0x15/0xd0 [ 1831.478613][ T4627] do_syscall_64+0x117/0xfc0 [ 1831.478615][ T4627] ? exc_page_fault+0xaf/0xd0 [ 1831.478617][ T4627] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 1831.478620][ T4627] RIP: 0033:0x7f2b90fd0c5e [ 1831.478624][ T4627] 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 [ 1831.478626][ T4627] RSP: 002b:00007ffdf301d4f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 1831.478629][ T4627] RAX: ffffffffffffffda RBX: 000000000048a910 RCX: 00007f2b90fd0c5e [ 1831.478630][ T4627] RDX: 0000000000000000 RSI: 00007ffdf301d5b0 RDI: 0000000000000005 [ 1831.478631][ T4627] RBP: 00007ffdf301d500 R08: 0000000000000000 R09: 0000000000000000 [ 1831.478632][ T4627] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffdf301e726 [ 1831.478633][ T4627] R13: 0000000069a4874c R14: 0000000000000008 R15: 000000000049b620 [ 1831.478639][ T4627] [ 1841.150944][ T12] eth1: left allmulticast mode [ 1841.151123][ T12] eth1: left promiscuous mode [ 1841.151334][ T12] br0: port 2(eth1) entered disabled state [ 1841.152873][ T12] eth0: left allmulticast mode [ 1841.153022][ T12] eth0: left promiscuous mode [ 1841.153215][ T12] br0: port 1(eth0) entered disabled state [ 1843.471419][ T4797] eth0: renamed from r1h1 [ 1843.544426][ T4799] eth0: renamed from r2h1 [ 1843.647553][ T4802] eth2: renamed from r2h2 [ 1843.745053][ T4805] eth1: renamed from r2r1 [ 1844.118637][ T4820] br0: port 1(eth0) entered blocking state [ 1844.118813][ T4820] br0: port 1(eth0) entered disabled state [ 1844.119375][ T4820] eth0: entered allmulticast mode [ 1844.120261][ T4820] eth0: entered promiscuous mode [ 1844.121693][T27890] br0: port 1(eth0) entered blocking state [ 1844.121892][T27890] br0: port 1(eth0) entered forwarding state [ 1844.146259][ T4821] br0: port 2(eth1) entered blocking state [ 1844.146428][ T4821] br0: port 2(eth1) entered disabled state [ 1844.146587][ T4821] eth1: entered allmulticast mode [ 1844.153825][ T4821] eth1: entered promiscuous mode [ 1844.155282][ T37] br0: port 2(eth1) entered blocking state [ 1844.155440][ T37] br0: port 2(eth1) entered forwarding state [ 1856.746172][ T12] eth1: left allmulticast mode [ 1856.746327][ T12] eth1: left promiscuous mode [ 1856.746531][ T12] br0: port 2(eth1) entered disabled state [ 1856.747898][ T12] eth0: left allmulticast mode [ 1856.748053][ T12] eth0: left promiscuous mode [ 1856.748240][ T12] br0: port 1(eth0) entered disabled state