list_add corruption. prev->next should be next (ffffffff8a1dca60), but was ffff8881cbfe18f0. (prev=ffff8881cc7e3db0). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:28! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 4.20.0-rc6-next-20181210+ #164 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:__list_add_valid.cold.2+0x23/0x2a lib/list_debug.c:26 Code: e8 00 1f d2 fd 0f 0b 48 89 d9 48 c7 c7 20 e6 80 88 e8 ef 1e d2 fd 0f 0b 48 89 f1 48 c7 c7 a0 e6 80 88 48 89 de e8 db 1e d2 fd <0f> 0b 90 90 90 90 90 55 48 89 e5 41 57 41 56 49 be 00 00 00 00 00 RSP: 0018:ffff8881dad06ce0 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffffffff8a1dca60 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff816621c5 RDI: 0000000000000005 RBP: ffff8881dad06cf8 R08: ffff8881d9ada1c0 R09: ffffed103b5a5020 R10: ffffed103b5a5020 R11: ffff8881dad28107 R12: ffff8881b702a6f0 R13: ffff8881b702a480 R14: ffffffff8a1dc820 R15: ffffffff8a1dcab0 FS: 0000000000000000(0000) GS:ffff8881dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fabca1a7000 CR3: 00000001c41b2000 CR4: 00000000001426e0 Call Trace: IPVS: ftp: loaded support on port[0] = 21 __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] neigh_alloc net/core/neighbour.c:395 [inline] ___neigh_create+0x14b7/0x2600 net/core/neighbour.c:553 kobject: 'lo' (000000003813303e): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'lo' (000000003813303e): kobject_uevent_env kobject: 'lo' (000000003813303e): fill_kobj_path: path = '/devices/virtual/net/lo' kobject: 'queues' (000000002eddcff0): kobject_add_internal: parent: 'lo', set: '' kobject: 'queues' (000000002eddcff0): kobject_uevent_env __neigh_create+0x30/0x40 net/core/neighbour.c:640 ip6_finish_output2+0xa64/0x2940 net/ipv6/ip6_output.c:117 kobject: 'queues' (000000002eddcff0): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000a780a8e5): kobject_add_internal: parent: 'queues', set: 'queues' ip6_finish_output+0x58c/0xc60 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x232/0x9d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] ndisc_send_skb+0x1005/0x1560 net/ipv6/ndisc.c:491 ndisc_send_rs+0x134/0x6e0 net/ipv6/ndisc.c:685 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3840 call_timer_fn+0x272/0x920 kernel/time/timer.c:1325 expire_timers kernel/time/timer.c:1362 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1681 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1694 __do_softirq+0x308/0xb7e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:__write_once_size include/linux/compiler.h:209 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4b/0x50 kernel/kcov.c:109 Code: 90 d8 12 00 00 83 fa 02 75 20 48 8b 88 e0 12 00 00 8b 80 dc 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 <5d> c3 0f 1f 00 55 40 0f b6 d6 40 0f b6 f7 31 ff 48 89 e5 48 8b 4d RSP: 0018:ffff8881d9ae7258 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8881d9ada1c0 RBX: 1ffff1103b35ce50 RCX: ffffffff86a74e42 RDX: 0000000000000000 RSI: ffffffff8393ecb9 RDI: 0000000000000001 RBP: ffff8881d9ae7258 R08: ffff8881d9ada1c0 R09: 0000000000000008 R10: 0000000000000078 R11: ffff8881d9ada1c0 R12: 000000000002da40 R13: ffff8881d9ae72e0 R14: dffffc0000000000 R15: ffff8881d9ae74a8 debug_smp_processor_id+0x9/0x20 lib/smp_processor_id.c:56 rcu_dynticks_curr_cpu_in_eqs+0x69/0x170 kernel/rcu/tree.c:303 rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:932 rcu_read_lock include/linux/rcupdate.h:608 [inline] inet_twsk_purge+0x69b/0x870 net/ipv4/inet_timewait_sock.c:267 dccp_v4_exit_batch+0x1a/0x20 net/dccp/ipv4.c:1033 ops_exit_list.isra.5+0x105/0x160 net/core/net_namespace.c:156 cleanup_net+0x555/0xb10 net/core/net_namespace.c:551 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 52f7bfdf5ac46665 ]--- RIP: 0010:__list_add_valid.cold.2+0x23/0x2a lib/list_debug.c:26 kobject: 'rx-0' (00000000a780a8e5): kobject_uevent_env Code: e8 00 1f d2 fd 0f 0b 48 89 d9 48 c7 c7 20 e6 80 88 e8 ef 1e d2 fd 0f 0b 48 89 f1 48 c7 c7 a0 e6 80 88 48 89 de e8 db 1e d2 fd <0f> 0b 90 90 90 90 90 55 48 89 e5 41 57 41 56 49 be 00 00 00 00 00 RSP: 0018:ffff8881dad06ce0 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffffffff8a1dca60 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff816621c5 RDI: 0000000000000005 RBP: ffff8881dad06cf8 R08: ffff8881d9ada1c0 R09: ffffed103b5a5020 R10: ffffed103b5a5020 R11: ffff8881dad28107 R12: ffff8881b702a6f0 R13: ffff8881b702a480 R14: ffffffff8a1dc820 R15: ffffffff8a1dcab0 FS: 0000000000000000(0000) GS:ffff8881dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fabca1a7000 CR3: 00000001c41b2000 CR4: 00000000001426e0