ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! INFO: task kworker/u4:8:19258 blocked for more than 140 seconds. Not tainted 4.14.112+ #55 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:8 D26776 19258 2 0x80000000 Workqueue: netns cleanup_net Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x559/0x1430 kernel/locking/mutex.c:893 cleanup_net+0x136/0x860 net/core/net_namespace.c:450 process_one_work+0x7c6/0x1510 kernel/workqueue.c:2134 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2271 kthread+0x310/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [<000000002f089609>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4544 2 locks held by getty/1761: #0: (&tty->ldisc_sem){++++}, at: [<00000000bc647628>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000064d14c46>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 3 locks held by kworker/u4:8/19258: #0: ("%s""netns"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: (net_cleanup_work){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 #2: (net_mutex){+.+.}, at: [<000000002189e3d6>] cleanup_net+0x136/0x860 net/core/net_namespace.c:450 1 lock held by syz-executor.3/18777: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/18841: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/18968: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19050: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19183: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19201: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19327: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19421: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19530: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19571: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19687: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19701: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19791: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/19878: #0: (net_mutex){+.+.}, at: [<00000000631397d4>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 2 locks held by kworker/u4:13/28997: #0: ("events_unbound"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((reaper_work).work){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/1:12/13902: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:12/13928: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/1:15/13930: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:13/13934: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:14/13942: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:15/13946: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:16/13953: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:17/13954: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/1:16/13958: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:18/13960: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:19/13964: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:20/13970: #0: ("events"){+.+.}, at: [<000000004224860c>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&map->work)){+.+.}, at: [<0000000021211c17>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.112+ #55 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x10e lib/dump_stack.c:53 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13980 Comm: modprobe Not tainted 4.14.112+ #55 task: 00000000771d7ed7 task.stack: 00000000d05b8852 RIP: 0010:perf_trace_lock_acquire+0xf8/0x4e0 include/trace/events/lock.h:13 RSP: 0018:ffff88816d1f7b38 EFLAGS: 00000006 RAX: 0000000000220018 RBX: ffff8881d4e38c88 RCX: 0000000000000001 RDX: 0000000000000002 RSI: ffff8881d56e9698 RDI: ffffffff838c4080 RBP: ffff88816d1f7c18 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: ffffffff81bf2340 R12: ffffffff83ebff60 R13: ffff8881d56e9698 R14: ffff88816d1f7bf0 R15: 0000000000000000 FS: 00007f78834a4700(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561a810031d8 CR3: 000000016ffec005 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x279/0x380 kernel/locking/lockdep.c:3993 Code: 48 03 00 00 49 8b 7d 18 48 85 ff 0f 84 d6 02 00 00 e8 cd c7 62 01 89 85 40 ff ff ff 83 c0 01 c1 e0 10 83 c8 18 89 85 34 ff ff ff <49> 8d 7c 24 78 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea