[ 2221.136267][ T2246] IPv6: Can't replace route, no match found [ 2222.088577][ T2316] IPv6: Can't replace route, no match found [ 2311.023764][ T4003] veth2: entered promiscuous mode [ 2313.036718][ T4003] veth2: left promiscuous mode [ 2313.151646][ T4006] veth2: entered promiscuous mode [ 2313.166095][ T4006] veth2: left promiscuous mode [ 2313.271264][ T4009] veth2: entered promiscuous mode [ 2313.284697][ T4009] veth2: left promiscuous mode [ 2313.386816][ T4012] veth2: entered promiscuous mode [ 2313.399314][ T4012] veth2: left promiscuous mode [ 2313.512770][ T4015] veth2: entered promiscuous mode [ 2313.524280][ T4015] veth2: left promiscuous mode [ 2313.602262][ T4023] [ 2313.602471][ T4023] ============================= [ 2313.602610][ T4023] WARNING: suspicious RCU usage [ 2313.602746][ T4023] 7.0.0-rc3-virtme #1 Not tainted [ 2313.603136][ T4023] ----------------------------- [ 2313.603277][ T4023] ./include/net/neighbour.h:312 suspicious rcu_dereference_check() usage! [ 2313.603482][ T4023] [ 2313.603482][ T4023] other info that might help us debug this: [ 2313.603482][ T4023] [ 2313.603767][ T4023] [ 2313.603767][ T4023] rcu_scheduler_active = 2, debug_locks = 1 [ 2313.603972][ T4023] 3 locks held by ip/4023: [ 2313.604108][ T4023] #0: ff11000014029a30 (&tb->tb6_lock){+.-.}-{3:3}, at: ip6_route_add+0x95/0x160 [ 2313.604354][ T4023] #1: ffffffff9718c900 (rcu_read_lock_bh){....}-{1:3}, at: fib6_nh_age_exceptions.part.0+0x24/0x200 [ 2313.604623][ T4023] #2: ffffffff979afcd8 (rt6_exception_lock){+.-.}-{3:3}, at: fib6_nh_age_exceptions.part.0+0x66/0x200 [ 2313.604900][ T4023] [ 2313.604900][ T4023] stack backtrace: [ 2313.605068][ T4023] CPU: 0 UID: 0 PID: 4023 Comm: ip Not tainted 7.0.0-rc3-virtme #1 PREEMPT(full) [ 2313.605071][ T4023] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2313.605073][ T4023] Call Trace: [ 2313.605074][ T4023] [ 2313.605076][ T4023] dump_stack_lvl+0x6f/0xa0 [ 2313.605081][ T4023] lockdep_rcu_suspicious.cold+0x4f/0xad [ 2313.605087][ T4023] ___neigh_lookup_noref.constprop.0+0x4d0/0x8e0 [ 2313.605092][ T4023] rt6_age_examine_exception+0x209/0x510 [ 2313.605096][ T4023] ? __ip6_del_rt+0x160/0x160 [ 2313.605099][ T4023] ? fib6_nh_get_excptn_bucket+0x6e/0x150 [ 2313.605102][ T4023] fib6_nh_age_exceptions.part.0+0xce/0x200 [ 2313.605105][ T4023] rt6_age_exceptions+0xff/0x150 [ 2313.605108][ T4023] ? rt6_flush_exceptions+0x1a0/0x1a0 [ 2313.605110][ T4023] ? rcu_is_watching+0x15/0xd0 [ 2313.605114][ T4023] ? rcu_is_watching+0x15/0xd0 [ 2313.605116][ T4023] fib6_age_exceptions+0xc5/0x250 [ 2313.605119][ T4023] fib6_add_rt2node+0x25c6/0x3f90 [ 2313.605121][ T4023] ? pcpu_alloc_noprof+0x635/0xa60 [ 2313.605129][ T4023] ? fib6_age_exceptions+0x250/0x250 [ 2313.605132][ T4023] ? fib6_add_1.constprop.0+0x512/0x1620 [ 2313.605137][ T4023] ? fib6_add+0x36a/0xe40 [ 2313.605139][ T4023] fib6_add+0x36a/0xe40 [ 2313.605142][ T4023] ? lock_acquire.part.0+0xbc/0x260 [ 2313.605145][ T4023] ? fib6_add_rt2node+0x3f90/0x3f90 [ 2313.605150][ T4023] ip6_route_add+0xa7/0x160 [ 2313.605152][ T4023] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 2313.605154][ T4023] inet6_rtm_newroute+0x10a/0x120 [ 2313.605156][ T4023] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 2313.605158][ T4023] ? lock_acquire.part.0+0xbc/0x260 [ 2313.605159][ T4023] ? find_held_lock+0x2b/0x80 [ 2313.605167][ T4023] ? __lock_release.isra.0+0x59/0x170 [ 2313.605170][ T4023] ? rtnetlink_rcv_msg+0x6dc/0xb90 [ 2313.605175][ T4023] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 2313.605176][ T4023] rtnetlink_rcv_msg+0x6fe/0xb90 [ 2313.605179][ T4023] ? rtnl_fdb_dump+0x620/0x620 [ 2313.605182][ T4023] ? __lock_acquire+0x577/0xc10 [ 2313.605185][ T4023] ? lock_acquire.part.0+0xbc/0x260 [ 2313.605186][ T4023] ? find_held_lock+0x2b/0x80 [ 2313.605190][ T4023] netlink_rcv_skb+0x123/0x380 [ 2313.605193][ T4023] ? rtnl_fdb_dump+0x620/0x620 [ 2313.605196][ T4023] ? netlink_ack+0xce0/0xce0 [ 2313.605201][ T4023] ? netlink_deliver_tap+0xc5/0x330 [ 2313.605203][ T4023] ? netlink_deliver_tap+0x13f/0x330 [ 2313.605207][ T4023] netlink_unicast+0x4a3/0x770 [ 2313.605210][ T4023] ? netlink_attachskb+0x810/0x810 [ 2313.605212][ T4023] ? __alloc_skb+0x4c4/0x5f0 [ 2313.605215][ T4023] ? napi_skb_cache_get+0x7a0/0x7a0 [ 2313.605216][ T4023] ? lock_acquire.part.0+0xbc/0x260 [ 2313.605219][ T4023] ? __lock_acquire+0x577/0xc10 [ 2313.605222][ T4023] netlink_sendmsg+0x735/0xc60 [ 2313.605225][ T4023] ? netlink_unicast+0x770/0x770 [ 2313.605229][ T4023] ? __might_fault+0x97/0x140 [ 2313.605233][ T4023] ____sys_sendmsg+0x419/0x850 [ 2313.605236][ T4023] ? copy_msghdr_from_user+0x270/0x430 [ 2313.605238][ T4023] ? get_timestamp.constprop.0+0x390/0x390 [ 2313.605239][ T4023] ? move_addr_to_kernel+0x40/0x40 [ 2313.605243][ T4023] ? stack_depot_save_flags+0x30d/0x6e0 [ 2313.605246][ T4023] ? rcu_read_lock_any_held+0x3c/0x90 [ 2313.605252][ T4023] ___sys_sendmsg+0xfd/0x180 [ 2313.605253][ T4023] ? __call_rcu_common.constprop.0+0xa6/0xa00 [ 2313.605257][ T4023] ? copy_msghdr_from_user+0x430/0x430 [ 2313.605271][ T4023] __sys_sendmsg+0x124/0x1c0 [ 2313.605274][ T4023] ? __sys_sendmsg_sock+0x20/0x20 [ 2313.605275][ T4023] ? lockdep_hardirqs_on+0x84/0x130 [ 2313.605280][ T4023] ? __call_rcu_common.constprop.0+0x3bd/0xa00 [ 2313.605285][ T4023] ? do_raw_spin_unlock+0x59/0x250 [ 2313.605287][ T4023] ? rcu_is_watching+0x15/0xd0 [ 2313.605290][ T4023] do_syscall_64+0x117/0xfc0 [ 2313.605292][ T4023] ? exc_page_fault+0xaf/0xd0 [ 2313.605295][ T4023] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2313.605297][ T4023] RIP: 0033:0x7f0fa0f23c5e [ 2313.605301][ T4023] 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 [ 2313.605303][ T4023] RSP: 002b:00007ffecab171a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 2313.605305][ T4023] RAX: ffffffffffffffda RBX: 00007ffecab197b0 RCX: 00007f0fa0f23c5e [ 2313.605306][ T4023] RDX: 0000000000000000 RSI: 00007ffecab17260 RDI: 0000000000000005 [ 2313.605307][ T4023] RBP: 00007ffecab171b0 R08: 0000000000000000 R09: 0000000000000000 [ 2313.605308][ T4023] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 2313.605309][ T4023] R13: 0000000069bbf18a R14: 00007ffecab197c0 R15: 000000000049c620 [ 2313.605315][ T4023] [ 2314.144179][ T4051] veth2: entered promiscuous mode [ 2314.155018][ T4051] veth2: left promiscuous mode [ 2384.819014][ T8045] veth2: entered promiscuous mode [ 2384.839665][ T8045] veth2: left promiscuous mode [ 2386.028247][ T8057] veth2: entered promiscuous mode [ 2386.039418][ T8057] veth2: left promiscuous mode [ 2387.270022][ T8071] veth2: entered promiscuous mode [ 2387.280818][ T8071] veth2: left promiscuous mode