[ 1150.640576][T25277] IPv6: Can't replace route, no match found [ 1151.645203][T25347] IPv6: Can't replace route, no match found [ 1171.673022][T26290] Mirror/redirect action on [ 1241.155322][T26949] veth2: entered promiscuous mode [ 1243.172732][T26949] veth2: left promiscuous mode [ 1243.277486][T26952] veth2: entered promiscuous mode [ 1243.291355][T26952] veth2: left promiscuous mode [ 1243.412626][T26955] veth2: entered promiscuous mode [ 1243.424153][T26955] veth2: left promiscuous mode [ 1243.528333][T26958] veth2: entered promiscuous mode [ 1243.541196][T26958] veth2: left promiscuous mode [ 1243.648090][T26961] veth2: entered promiscuous mode [ 1243.662624][T26961] veth2: left promiscuous mode [ 1243.739032][T26969] [ 1243.739255][T26969] ============================= [ 1243.739397][T26969] WARNING: suspicious RCU usage [ 1243.739538][T26969] 7.0.0-rc3-virtme #1 Not tainted [ 1243.739675][T26969] ----------------------------- [ 1243.739819][T26969] ./include/net/neighbour.h:312 suspicious rcu_dereference_check() usage! [ 1243.740024][T26969] [ 1243.740024][T26969] other info that might help us debug this: [ 1243.740024][T26969] [ 1243.740309][T26969] [ 1243.740309][T26969] rcu_scheduler_active = 2, debug_locks = 1 [ 1243.740504][T26969] 3 locks held by ip/26969: [ 1243.740639][T26969] #0: ff11000015a7e830 (&tb->tb6_lock){+.-.}-{3:3}, at: ip6_route_add+0x95/0x160 [ 1243.740886][T26969] #1: ffffffff9bd8c900 (rcu_read_lock_bh){....}-{1:3}, at: fib6_nh_age_exceptions.part.0+0x24/0x200 [ 1243.741157][T26969] #2: ffffffff9c5afcd8 (rt6_exception_lock){+.-.}-{3:3}, at: fib6_nh_age_exceptions.part.0+0x66/0x200 [ 1243.741429][T26969] [ 1243.741429][T26969] stack backtrace: [ 1243.741594][T26969] CPU: 0 UID: 0 PID: 26969 Comm: ip Not tainted 7.0.0-rc3-virtme #1 PREEMPT(full) [ 1243.741597][T26969] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1243.741599][T26969] Call Trace: [ 1243.741600][T26969] [ 1243.741602][T26969] dump_stack_lvl+0x6f/0xa0 [ 1243.741608][T26969] lockdep_rcu_suspicious.cold+0x4f/0xad [ 1243.741613][T26969] ___neigh_lookup_noref.constprop.0+0x4d0/0x8e0 [ 1243.741618][T26969] rt6_age_examine_exception+0x209/0x510 [ 1243.741623][T26969] ? __ip6_del_rt+0x160/0x160 [ 1243.741625][T26969] ? fib6_nh_get_excptn_bucket+0x6e/0x150 [ 1243.741628][T26969] fib6_nh_age_exceptions.part.0+0xce/0x200 [ 1243.741632][T26969] rt6_age_exceptions+0xff/0x150 [ 1243.741635][T26969] ? rt6_flush_exceptions+0x1a0/0x1a0 [ 1243.741637][T26969] ? rcu_is_watching+0x15/0xd0 [ 1243.741641][T26969] ? rcu_is_watching+0x15/0xd0 [ 1243.741643][T26969] fib6_age_exceptions+0xc5/0x250 [ 1243.741646][T26969] fib6_add_rt2node+0x25c6/0x3f90 [ 1243.741648][T26969] ? pcpu_alloc_noprof+0x635/0xa60 [ 1243.741656][T26969] ? fib6_age_exceptions+0x250/0x250 [ 1243.741659][T26969] ? fib6_add_1.constprop.0+0x512/0x1620 [ 1243.741665][T26969] ? fib6_add+0x36a/0xe40 [ 1243.741666][T26969] fib6_add+0x36a/0xe40 [ 1243.741669][T26969] ? lock_acquire.part.0+0xbc/0x260 [ 1243.741673][T26969] ? fib6_add_rt2node+0x3f90/0x3f90 [ 1243.741678][T26969] ip6_route_add+0xa7/0x160 [ 1243.741680][T26969] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 1243.741682][T26969] inet6_rtm_newroute+0x10a/0x120 [ 1243.741684][T26969] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 1243.741686][T26969] ? lock_acquire.part.0+0xbc/0x260 [ 1243.741687][T26969] ? find_held_lock+0x2b/0x80 [ 1243.741695][T26969] ? __lock_release.isra.0+0x59/0x170 [ 1243.741698][T26969] ? rtnetlink_rcv_msg+0x6dc/0xb90 [ 1243.741703][T26969] ? ip6_route_multipath_add+0x13a0/0x13a0 [ 1243.741704][T26969] rtnetlink_rcv_msg+0x6fe/0xb90 [ 1243.741707][T26969] ? rtnl_fdb_dump+0x620/0x620 [ 1243.741710][T26969] ? __lock_acquire+0x577/0xc10 [ 1243.741713][T26969] ? lock_acquire.part.0+0xbc/0x260 [ 1243.741715][T26969] ? find_held_lock+0x2b/0x80 [ 1243.741718][T26969] netlink_rcv_skb+0x123/0x380 [ 1243.741722][T26969] ? rtnl_fdb_dump+0x620/0x620 [ 1243.741725][T26969] ? netlink_ack+0xce0/0xce0 [ 1243.741730][T26969] ? netlink_deliver_tap+0xc5/0x330 [ 1243.741732][T26969] ? netlink_deliver_tap+0x13f/0x330 [ 1243.741736][T26969] netlink_unicast+0x4a3/0x770 [ 1243.741739][T26969] ? netlink_attachskb+0x810/0x810 [ 1243.741740][T26969] ? __alloc_skb+0x4c4/0x5f0 [ 1243.741744][T26969] ? napi_skb_cache_get+0x7a0/0x7a0 [ 1243.741745][T26969] ? lock_acquire.part.0+0xbc/0x260 [ 1243.741748][T26969] ? __lock_acquire+0x577/0xc10 [ 1243.741751][T26969] netlink_sendmsg+0x735/0xc60 [ 1243.741754][T26969] ? netlink_unicast+0x770/0x770 [ 1243.741758][T26969] ? __might_fault+0x97/0x140 [ 1243.741762][T26969] ____sys_sendmsg+0x419/0x850 [ 1243.741765][T26969] ? copy_msghdr_from_user+0x270/0x430 [ 1243.741767][T26969] ? get_timestamp.constprop.0+0x390/0x390 [ 1243.741768][T26969] ? move_addr_to_kernel+0x40/0x40 [ 1243.741774][T26969] ? stack_depot_save_flags+0x30d/0x6e0 [ 1243.741778][T26969] ? rcu_read_lock_any_held+0x3c/0x90 [ 1243.741783][T26969] ___sys_sendmsg+0xfd/0x180 [ 1243.741785][T26969] ? __call_rcu_common.constprop.0+0xa6/0xa00 [ 1243.741788][T26969] ? copy_msghdr_from_user+0x430/0x430 [ 1243.741803][T26969] __sys_sendmsg+0x124/0x1c0 [ 1243.741805][T26969] ? __sys_sendmsg_sock+0x20/0x20 [ 1243.741807][T26969] ? lockdep_hardirqs_on+0x84/0x130 [ 1243.741811][T26969] ? __call_rcu_common.constprop.0+0x3bd/0xa00 [ 1243.741817][T26969] ? do_raw_spin_unlock+0x59/0x250 [ 1243.741819][T26969] ? rcu_is_watching+0x15/0xd0 [ 1243.741822][T26969] do_syscall_64+0x117/0xfc0 [ 1243.741824][T26969] ? exc_page_fault+0xaf/0xd0 [ 1243.741827][T26969] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 1243.741829][T26969] RIP: 0033:0x7f9bb14f0c5e [ 1243.741833][T26969] 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 [ 1243.741835][T26969] RSP: 002b:00007fff95eb3af0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 1243.741838][T26969] RAX: ffffffffffffffda RBX: 00007fff95eb6100 RCX: 00007f9bb14f0c5e [ 1243.741839][T26969] RDX: 0000000000000000 RSI: 00007fff95eb3bb0 RDI: 0000000000000005 [ 1243.741840][T26969] RBP: 00007fff95eb3b00 R08: 0000000000000000 R09: 0000000000000000 [ 1243.741841][T26969] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 1243.741842][T26969] R13: 0000000069bbed8b R14: 00007fff95eb6110 R15: 000000000049c620 [ 1243.741848][T26969] [ 1244.307498][T26997] veth2: entered promiscuous mode [ 1244.321148][T26997] veth2: left promiscuous mode [ 1315.409094][T30933] veth2: entered promiscuous mode [ 1315.424083][T30933] veth2: left promiscuous mode [ 1316.608234][T30945] veth2: entered promiscuous mode [ 1316.622002][T30945] veth2: left promiscuous mode [ 1317.858928][T30959] veth2: entered promiscuous mode [ 1317.875289][T30959] veth2: left promiscuous mode