[ 2027.798611][T17756] IPv6: Can't replace route, no match found [ 2028.731224][T17826] IPv6: Can't replace route, no match found [ 2117.948971][T19419] veth2: entered promiscuous mode [ 2119.962220][T19419] veth2: left promiscuous mode [ 2120.067049][T19422] veth2: entered promiscuous mode [ 2120.079682][T19422] veth2: left promiscuous mode [ 2120.174074][T19425] veth2: entered promiscuous mode [ 2120.189865][T19425] veth2: left promiscuous mode [ 2120.291531][T19428] veth2: entered promiscuous mode [ 2120.302895][T19428] veth2: left promiscuous mode [ 2120.410479][T19431] veth2: entered promiscuous mode [ 2120.421985][T19431] veth2: left promiscuous mode [ 2120.505901][T19439] [ 2120.506159][T19439] ============================= [ 2120.506368][T19439] WARNING: suspicious RCU usage [ 2120.506572][T19439] 7.0.0-rc3-virtme #1 Not tainted [ 2120.506759][T19439] ----------------------------- [ 2120.506941][T19439] ./include/net/neighbour.h:312 suspicious rcu_dereference_check() usage! [ 2120.507187][T19439] [ 2120.507187][T19439] other info that might help us debug this: [ 2120.507187][T19439] [ 2120.507518][T19439] [ 2120.507518][T19439] rcu_scheduler_active = 2, debug_locks = 1 [ 2120.507765][T19439] 3 locks held by ip/19439: [ 2120.507950][T19439] #0: ff110000217c8830 (&tb->tb6_lock){+.-.}-{3:3}, at: ip6_route_add+0x95/0x160 [ 2120.508244][T19439] #1: ffffffff91f8c900 (rcu_read_lock_bh){....}-{1:3}, at: fib6_nh_age_exceptions.part.0+0x24/0x200 [ 2120.508581][T19439] #2: ffffffff927afbd8 (rt6_exception_lock){+.-.}-{3:3}, at: fib6_nh_age_exceptions.part.0+0x66/0x200 [ 2120.508899][T19439] [ 2120.508899][T19439] stack backtrace: [ 2120.509114][T19439] CPU: 2 UID: 0 PID: 19439 Comm: ip Not tainted 7.0.0-rc3-virtme #1 PREEMPT(full) [ 2120.509118][T19439] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2120.509119][T19439] Call Trace: [ 2120.509121][T19439] [ 2120.509124][T19439] dump_stack_lvl+0x6f/0xa0 [ 2120.509130][T19439] lockdep_rcu_suspicious.cold+0x4f/0xad [ 2120.509136][T19439] ___neigh_lookup_noref.constprop.0+0x4d0/0x8e0 [ 2120.509141][T19439] rt6_age_examine_exception+0x209/0x510 [ 2120.509145][T19439] ? __ip6_del_rt+0x160/0x160 [ 2120.509148][T19439] ? fib6_nh_get_excptn_bucket+0x6e/0x150 [ 2120.509150][T19439] fib6_nh_age_exceptions.part.0+0xce/0x200 [ 2120.509154][T19439] rt6_age_exceptions+0xff/0x150 [ 2120.509157][T19439] ? rt6_flush_exceptions+0x1a0/0x1a0 [ 2120.509159][T19439] ? rcu_is_watching+0x15/0xd0 [ 2120.509163][T19439] ? rcu_is_watching+0x15/0xd0 [ 2120.509165][T19439] fib6_age_exceptions+0xc5/0x250 [ 2120.509168][T19439] fib6_add_rt2node+0x25c6/0x3f90 [ 2120.509170][T19439] ? pcpu_alloc_noprof+0x635/0xa60 [ 2120.509178][T19439] ? fib6_age_exceptions+0x250/0x250 [ 2120.509181][T19439] ? fib6_add_1.constprop.0+0x512/0x1620 [ 2120.509187][T19439] ? fib6_add+0x36a/0xe40 [ 2120.509188][T19439] fib6_add+0x36a/0xe40 [ 2120.509191][T19439] ? lock_acquire.part.0+0xbc/0x260 [ 2120.509195][T19439] ? fib6_add_rt2node+0x3f90/0x3f90 [ 2120.509200][T19439] ip6_route_add+0xa7/0x160 [ 2120.509202][T19439] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 2120.509204][T19439] inet6_rtm_newroute+0x10a/0x120 [ 2120.509206][T19439] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 2120.509208][T19439] ? lock_acquire.part.0+0xbc/0x260 [ 2120.509209][T19439] ? find_held_lock+0x2b/0x80 [ 2120.509217][T19439] ? __lock_release.isra.0+0x59/0x170 [ 2120.509219][T19439] ? rtnetlink_rcv_msg+0x6dc/0xb90 [ 2120.509224][T19439] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 2120.509226][T19439] rtnetlink_rcv_msg+0x6fe/0xb90 [ 2120.509229][T19439] ? rtnl_fdb_dump+0x620/0x620 [ 2120.509231][T19439] ? __lock_acquire+0x577/0xc10 [ 2120.509235][T19439] ? lock_acquire.part.0+0xbc/0x260 [ 2120.509236][T19439] ? find_held_lock+0x2b/0x80 [ 2120.509240][T19439] netlink_rcv_skb+0x123/0x380 [ 2120.509243][T19439] ? rtnl_fdb_dump+0x620/0x620 [ 2120.509246][T19439] ? netlink_ack+0xce0/0xce0 [ 2120.509251][T19439] ? netlink_deliver_tap+0xc5/0x330 [ 2120.509253][T19439] ? netlink_deliver_tap+0x13f/0x330 [ 2120.509256][T19439] netlink_unicast+0x4a3/0x770 [ 2120.509260][T19439] ? netlink_attachskb+0x810/0x810 [ 2120.509261][T19439] ? __alloc_skb+0x4c4/0x5f0 [ 2120.509264][T19439] ? napi_skb_cache_get+0x7a0/0x7a0 [ 2120.509266][T19439] ? lock_acquire.part.0+0xbc/0x260 [ 2120.509268][T19439] ? __lock_acquire+0x577/0xc10 [ 2120.509271][T19439] netlink_sendmsg+0x735/0xc60 [ 2120.509275][T19439] ? netlink_unicast+0x770/0x770 [ 2120.509278][T19439] ? __might_fault+0x97/0x140 [ 2120.509283][T19439] ____sys_sendmsg+0x419/0x850 [ 2120.509285][T19439] ? copy_msghdr_from_user+0x270/0x430 [ 2120.509287][T19439] ? get_timestamp.constprop.0+0x390/0x390 [ 2120.509289][T19439] ? move_addr_to_kernel+0x40/0x40 [ 2120.509292][T19439] ? stack_depot_save_flags+0x30d/0x6e0 [ 2120.509296][T19439] ? rcu_read_lock_any_held+0x3c/0x90 [ 2120.509301][T19439] ___sys_sendmsg+0xfd/0x180 [ 2120.509302][T19439] ? __call_rcu_common.constprop.0+0xa6/0xa00 [ 2120.509306][T19439] ? copy_msghdr_from_user+0x430/0x430 [ 2120.509320][T19439] __sys_sendmsg+0x124/0x1c0 [ 2120.509323][T19439] ? __sys_sendmsg_sock+0x20/0x20 [ 2120.509324][T19439] ? lockdep_hardirqs_on+0x84/0x130 [ 2120.509329][T19439] ? __call_rcu_common.constprop.0+0x3bd/0xa00 [ 2120.509334][T19439] ? do_raw_spin_unlock+0x59/0x250 [ 2120.509336][T19439] ? rcu_is_watching+0x15/0xd0 [ 2120.509340][T19439] do_syscall_64+0x117/0xfc0 [ 2120.509342][T19439] ? exc_page_fault+0xaf/0xd0 [ 2120.509344][T19439] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2120.509347][T19439] RIP: 0033:0x7fdbd466bc5e [ 2120.509350][T19439] 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 [ 2120.509352][T19439] RSP: 002b:00007ffd0e535220 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 2120.509355][T19439] RAX: ffffffffffffffda RBX: 00007ffd0e537830 RCX: 00007fdbd466bc5e [ 2120.509357][T19439] RDX: 0000000000000000 RSI: 00007ffd0e5352e0 RDI: 0000000000000005 [ 2120.509358][T19439] RBP: 00007ffd0e535230 R08: 0000000000000000 R09: 0000000000000000 [ 2120.509358][T19439] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 2120.509359][T19439] R13: 0000000069bbc562 R14: 00007ffd0e537840 R15: 000000000049c620 [ 2120.509366][T19439] [ 2121.052517][T19467] veth2: entered promiscuous mode [ 2121.063436][T19467] veth2: left promiscuous mode [ 2192.724905][T23405] veth2: entered promiscuous mode [ 2192.739632][T23405] veth2: left promiscuous mode [ 2193.916972][T23417] veth2: entered promiscuous mode [ 2193.934367][T23417] veth2: left promiscuous mode [ 2195.169024][T23431] veth2: entered promiscuous mode [ 2195.181066][T23431] veth2: left promiscuous mode