[ 632.322333][ T5334] veth7: left promiscuous mode [ 662.870487][ T5644] [ 662.870640][ T5644] ============================= [ 662.870830][ T5644] WARNING: suspicious RCU usage [ 662.871010][ T5644] 7.0.0-rc1-virtme #1 Not tainted [ 662.871201][ T5644] ----------------------------- [ 662.871375][ T5644] net/ipv6/ip6_fib.c:111 suspicious rcu_dereference_protected() usage! [ 662.871608][ T5644] [ 662.871608][ T5644] other info that might help us debug this: [ 662.871608][ T5644] [ 662.871902][ T5644] [ 662.871902][ T5644] rcu_scheduler_active = 2, debug_locks = 1 [ 662.872154][ T5644] 1 lock held by ip/5644: [ 662.872300][ T5644] #0: fffffffface7e6e8 (rtnl_mutex){+.+.}-{4:4}, at: rtm_new_nexthop+0x1a6/0x8c0 [ 662.872589][ T5644] [ 662.872589][ T5644] stack backtrace: [ 662.872808][ T5644] CPU: 2 UID: 0 PID: 5644 Comm: ip Not tainted 7.0.0-rc1-virtme #1 PREEMPT(full) [ 662.872812][ T5644] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 662.872814][ T5644] Call Trace: [ 662.872816][ T5644] [ 662.872818][ T5644] dump_stack_lvl+0x6f/0xa0 [ 662.872825][ T5644] lockdep_rcu_suspicious.cold+0x4f/0xad [ 662.872831][ T5644] fib6_update_sernum+0xfb/0x130 [ 662.872835][ T5644] nh_rt_cache_flush+0x8d/0x380 [ 662.872840][ T5644] replace_nexthop+0x347/0x6e0 [ 662.872844][ T5644] insert_nexthop+0x41e/0x7a0 [ 662.872848][ T5644] rtm_new_nexthop+0x3a0/0x8c0 [ 662.872851][ T5644] ? insert_nexthop+0x7a0/0x7a0 [ 662.872852][ T5644] ? lock_acquire.part.0+0xbc/0x260 [ 662.872856][ T5644] ? find_held_lock+0x2b/0x80 [ 662.872861][ T5644] ? lock_acquire.part.0+0xbc/0x260 [ 662.872863][ T5644] ? find_held_lock+0x2b/0x80 [ 662.872868][ T5644] ? find_held_lock+0x2b/0x80 [ 662.872869][ T5644] ? insert_nexthop+0x7a0/0x7a0 [ 662.872871][ T5644] ? __lock_release.isra.0+0x59/0x170 [ 662.872875][ T5644] ? insert_nexthop+0x7a0/0x7a0 [ 662.872877][ T5644] rtnetlink_rcv_msg+0x6fe/0xb90 [ 662.872882][ T5644] ? rtnl_fdb_dump+0x620/0x620 [ 662.872884][ T5644] ? __lock_acquire+0x577/0xc10 [ 662.872888][ T5644] ? lock_acquire.part.0+0xbc/0x260 [ 662.872889][ T5644] ? find_held_lock+0x2b/0x80 [ 662.872892][ T5644] netlink_rcv_skb+0x123/0x380 [ 662.872895][ T5644] ? rtnl_fdb_dump+0x620/0x620 [ 662.872898][ T5644] ? netlink_ack+0xcc0/0xcc0 [ 662.872904][ T5644] ? netlink_deliver_tap+0xc5/0x330 [ 662.872906][ T5644] ? netlink_deliver_tap+0x13f/0x330 [ 662.872910][ T5644] netlink_unicast+0x4a3/0x770 [ 662.872914][ T5644] ? netlink_attachskb+0x810/0x810 [ 662.872916][ T5644] ? __alloc_skb+0x4cd/0x600 [ 662.872919][ T5644] ? napi_skb_cache_get+0x7a0/0x7a0 [ 662.872922][ T5644] ? __lock_acquire+0x577/0xc10 [ 662.872925][ T5644] netlink_sendmsg+0x735/0xc60 [ 662.872929][ T5644] ? netlink_unicast+0x770/0x770 [ 662.872932][ T5644] ? __might_fault+0x97/0x140 [ 662.872938][ T5644] ____sys_sendmsg+0x419/0x850 [ 662.872940][ T5644] ? copy_msghdr_from_user+0x270/0x430 [ 662.872942][ T5644] ? get_timestamp.constprop.0+0x3a0/0x3a0 [ 662.872943][ T5644] ? move_addr_to_kernel+0x40/0x40 [ 662.872947][ T5644] ? lock_acquire.part.0+0xbc/0x260 [ 662.872949][ T5644] ? find_held_lock+0x2b/0x80 [ 662.872952][ T5644] ___sys_sendmsg+0xfd/0x180 [ 662.872954][ T5644] ? copy_msghdr_from_user+0x430/0x430 [ 662.872955][ T5644] ? __lock_release.isra.0+0x59/0x170 [ 662.872966][ T5644] ? lock_vma_under_rcu+0x128/0x3e0 [ 662.872970][ T5644] __sys_sendmsg+0x124/0x1c0 [ 662.872973][ T5644] ? __sys_sendmsg_sock+0x20/0x20 [ 662.872978][ T5644] ? do_user_addr_fault+0x799/0xdb0 [ 662.872982][ T5644] ? rcu_is_watching+0x15/0xd0 [ 662.872986][ T5644] ? rcu_is_watching+0x15/0xd0 [ 662.872989][ T5644] do_syscall_64+0x117/0xfc0 [ 662.872993][ T5644] ? exc_page_fault+0xaf/0xd0 [ 662.872996][ T5644] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 662.872998][ T5644] RIP: 0033:0x7fe572d4bc5e [ 662.873002][ T5644] 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 [ 662.873004][ T5644] RSP: 002b:00007fff8c787e40 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 662.873007][ T5644] RAX: ffffffffffffffda RBX: 000000000048a910 RCX: 00007fe572d4bc5e [ 662.873009][ T5644] RDX: 0000000000000000 RSI: 00007fff8c787f00 RDI: 0000000000000005 [ 662.873010][ T5644] RBP: 00007fff8c787e50 R08: 0000000000000000 R09: 0000000000000000 [ 662.873010][ T5644] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 662.873011][ T5644] R13: 0000000069a4852d R14: 000000002921f310 R15: 000000000049b620 [ 662.873017][ T5644]