8021q: adding VLAN 0 to HW filter on device bond0 IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready ===================================== WARNING: bad unlock balance detected! 4.16.0-rc2+ #238 Not tainted ------------------------------------- kworker/0:2/1892 is trying to release lock (rcu_read_lock_bh) at: [] rcu_read_unlock_bh include/linux/rcupdate.h:722 [inline] [] hashlimit_mt_common.isra.10+0x1beb/0x2610 net/netfilter/xt_hashlimit.c:777 but there are no more locks to release! other info that might help us debug this: 7 locks held by kworker/0:2/1892: #0: ((wq_completion)"events"){+.+.}, at: [<0000000046444781>] process_one_work+0xaaf/0x1af0 kernel/workqueue.c:2084 #1: ((linkwatch_work).work){+.+.}, at: [<00000000378eb899>] process_one_work+0xb01/0x1af0 kernel/workqueue.c:2088 #2: (rtnl_mutex){+.+.}, at: [<00000000770b76cd>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #3: (console_lock){+.+.}, at: [<00000000228c3cdc>] console_trylock_spinning kernel/printk/printk.c:1643 [inline] #3: (console_lock){+.+.}, at: [<00000000228c3cdc>] vprintk_emit+0x5b5/0xb90 kernel/printk/printk.c:1906 #4: ((&idev->mc_ifc_timer)){+.-.}, at: [<0000000055289d28>] lockdep_copy_map include/linux/lockdep.h:178 [inline] #4: ((&idev->mc_ifc_timer)){+.-.}, at: [<0000000055289d28>] call_timer_fn+0x1c6/0x820 kernel/time/timer.c:1316 #5: (rcu_read_lock){....}, at: [<00000000b8d6ab93>] read_pnet include/net/net_namespace.h:284 [inline] #5: (rcu_read_lock){....}, at: [<00000000b8d6ab93>] dev_net include/linux/netdevice.h:2056 [inline] #5: (rcu_read_lock){....}, at: [<00000000b8d6ab93>] mld_sendpack+0x180/0xe70 net/ipv6/mcast.c:1625 #6: (rcu_read_lock){....}, at: [<0000000006c24dad>] nf_hook.constprop.37+0x0/0x830 net/ipv6/mcast.c:2795 stack backtrace: CPU: 0 PID: 1892 Comm: kworker/0:2 Not tainted 4.16.0-rc2+ #238 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events linkwatch_event Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 print_unlock_imbalance_bug+0x12f/0x140 kernel/locking/lockdep.c:3484 __lock_release kernel/locking/lockdep.c:3691 [inline] lock_release+0x6fe/0xa40 kernel/locking/lockdep.c:3939 rcu_lock_release include/linux/rcupdate.h:249 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:724 [inline] hashlimit_mt_common.isra.10+0x1c08/0x2610 net/netfilter/xt_hashlimit.c:777 hashlimit_mt+0x78/0x90 net/netfilter/xt_hashlimit.c:846 ip6t_do_table+0x98d/0x1a30 net/ipv6/netfilter/ip6_tables.c:319 ip6table_raw_hook+0x65/0x80 net/ipv6/netfilter/ip6table_raw.c:42 nf_hook_entry_hookfn include/linux/netfilter.h:120 [inline] nf_hook_slow+0xba/0x1a0 net/netfilter/core.c:483 nf_hook.constprop.37+0x3f6/0x830 include/linux/netfilter.h:243 NF_HOOK include/linux/netfilter.h:286 [inline] mld_sendpack+0x6c2/0xe70 net/ipv6/mcast.c:1658 mld_send_cr net/ipv6/mcast.c:1954 [inline] mld_ifc_timer_expire+0x3d9/0x770 net/ipv6/mcast.c:2451 call_timer_fn+0x228/0x820 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7ee/0xb70 kernel/time/timer.c:1666 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:541 [inline] smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:796 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:777 [inline] RIP: 0010:console_unlock+0xb18/0xfb0 kernel/printk/printk.c:2403 RSP: 0018:ffff8801d2366a20 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff12 RAX: ffff8801d23040c0 RBX: 0000000000000200 RCX: ffffffff815a7a4f RDX: 0000000000000000 RSI: 1ffff1003a46093a RDI: 0000000000000293 RBP: ffff8801d2366b88 R08: 1ffff1003a46cd12 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff83ba2660 R15: dffffc0000000000 vprintk_emit+0x5c3/0xb90 kernel/printk/printk.c:1907 vprintk_default+0x28/0x30 kernel/printk/printk.c:1947 vprintk_func+0x57/0xc0 kernel/printk/printk_safe.c:379 printk+0xaa/0xca kernel/printk/printk.c:1980 addrconf_notify+0x1f6f/0x2310 net/ipv6/addrconf.c:3460 notifier_call_chain+0x136/0x2c0 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x32/0x70 net/core/dev.c:1707 netdev_state_change+0x11e/0x180 net/core/dev.c:1339 linkwatch_do_dev+0x8d/0xf0 net/core/link_watch.c:164 __linkwatch_run_queue+0x472/0x7b0 net/core/link_watch.c:202 linkwatch_event+0x90/0xc0 net/core/link_watch.c:237 process_one_work+0xbbf/0x1af0 kernel/workqueue.c:2113 worker_thread+0x223/0x1990 kernel/workqueue.c:2247 kthread+0x33c/0x400 kernel/kthread.c:238