ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! INFO: task kworker/u4:2:360 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:2 D25896 360 2 0x80000000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_timeout+0x736/0xe80 kernel/time/timer.c:1721 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:123 __synchronize_srcu+0x12a/0x210 kernel/rcu/srcutree.c:898 fsnotify_mark_destroy_workfn+0xfd/0x310 fs/notify/mark.c:757 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 INFO: task kworker/u4:3:1845 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:3 D26376 1845 2 0x80000000 Workqueue: netns cleanup_net Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 _synchronize_rcu_expedited+0x5ab/0x850 kernel/rcu/tree_exp.h:615 synchronize_net+0x2b/0x40 net/core/dev.c:8217 dev_deactivate_many+0x3cf/0x980 net/sched/sch_generic.c:931 __dev_close_many+0x10a/0x260 net/core/dev.c:1441 INFO: task kworker/u4:7:6350 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:7 D25952 6350 2 0x80000000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_timeout+0x736/0xe80 kernel/time/timer.c:1721 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:123 __synchronize_srcu+0x12a/0x210 kernel/rcu/srcutree.c:898 fsnotify_connector_destroy_workfn+0x49/0xa0 fs/notify/mark.c:156 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 INFO: task syz-executor.2:12957 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28344 12957 1855 0x80000002 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_timeout+0x736/0xe80 kernel/time/timer.c:1721 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:123 flush_work+0x3d2/0x710 kernel/workqueue.c:2908 fsnotify_destroy_group+0x124/0x2d0 fs/notify/group.c:85 inotify_release+0x33/0x40 fs/notify/inotify/inotify_user.c:280 __fput+0x25e/0x700 fs/file_table.c:210 task_work_run+0x118/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x903/0x2960 kernel/exit.c:874 INFO: task syz-executor.3:13176 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28344 13176 1857 0x80000002 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 exp_funnel_lock kernel/rcu/tree_exp.h:295 [inline] _synchronize_rcu_expedited+0x690/0x850 kernel/rcu/tree_exp.h:596 synchronize_net+0x2b/0x40 net/core/dev.c:8217 packet_release+0x7a1/0xb80 net/packet/af_packet.c:3050 __sock_release+0xd2/0x2c0 net/socket.c:602 INFO: task syz-executor.5:23743 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27896 23743 1841 0x00000004 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 dev_ioctl+0x285/0xca0 net/core/dev_ioctl.c:421 sock_do_ioctl+0x92/0xb0 net/socket.c:981 sock_ioctl+0x253/0x440 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 INFO: task syz-executor.3:23769 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29352 23769 1857 0x00000004 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 exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] _synchronize_rcu_expedited+0x375/0x850 kernel/rcu/tree_exp.h:596 synchronize_net+0x2b/0x40 net/core/dev.c:8217 packet_release+0x7a1/0xb80 net/packet/af_packet.c:3050 __sock_release+0xd2/0x2c0 net/socket.c:602 INFO: task syz-executor.3:23772 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28648 23772 1857 0x00000004 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 dev_ioctl+0x285/0xca0 net/core/dev_ioctl.c:421 sock_do_ioctl+0x92/0xb0 net/socket.c:981 sock_ioctl+0x253/0x440 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 INFO: task syz-executor.2:23777 blocked for more than 140 seconds. Not tainted 4.14.111+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29984 23777 1855 0x00000004 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 dev_ioctl+0x285/0xca0 net/core/dev_ioctl.c:421 sock_do_ioctl+0x92/0xb0 net/socket.c:981 sock_ioctl+0x253/0x440 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [<00000000a467e849>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4544 2 locks held by kworker/u4:2/360: #0: ("events_unbound"){+.+.}, at: [<00000000ca0982e2>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((reaper_work).work){+.+.}, at: [<00000000a564853f>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by getty/1752: #0: (&tty->ldisc_sem){++++}, at: [<00000000bbb4ca21>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:275 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000005cd6e182>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 5 locks held by kworker/u4:3/1845: #0: ("%s""netns"){+.+.}, at: [<00000000ca0982e2>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: (net_cleanup_work){+.+.}, at: [<00000000a564853f>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 #2: (net_mutex){+.+.}, at: [<00000000db7e1ebb>] cleanup_net+0x136/0x860 net/core/net_namespace.c:449 #3: (rtnl_mutex){+.+.}, at: [<0000000004ba5a5b>] ip6_tnl_exit_net+0x71/0x550 net/ipv6/ip6_tunnel.c:2265 #4: (rcu_preempt_state.exp_mutex){+.+.}, at: [<0000000055b65e80>] exp_funnel_lock kernel/rcu/tree_exp.h:272 [inline] #4: (rcu_preempt_state.exp_mutex){+.+.}, at: [<0000000055b65e80>] _synchronize_rcu_expedited+0x307/0x850 kernel/rcu/tree_exp.h:596 2 locks held by kworker/u4:7/6350: #0: ("events_unbound"){+.+.}, at: [<00000000ca0982e2>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: (connector_reaper_work){+.+.}, at: [<00000000a564853f>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by syz-executor.3/13176: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<000000009b19fab4>] inode_lock include/linux/fs.h:715 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<000000009b19fab4>] __sock_release+0x86/0x2c0 net/socket.c:601 1 lock held by syz-executor.5/23743: #0: (rtnl_mutex){+.+.}, at: [<00000000a98026e2>] dev_ioctl+0x285/0xca0 net/core/dev_ioctl.c:421 2 locks held by syz-executor.3/23769: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<000000009b19fab4>] inode_lock include/linux/fs.h:715 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<000000009b19fab4>] __sock_release+0x86/0x2c0 net/socket.c:601 #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [<000000009543680f>] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [<000000009543680f>] _synchronize_rcu_expedited+0x375/0x850 kernel/rcu/tree_exp.h:596 1 lock held by syz-executor.3/23772: #0: (rtnl_mutex){+.+.}, at: [<00000000a98026e2>] dev_ioctl+0x285/0xca0 net/core/dev_ioctl.c:421 1 lock held by syz-executor.2/23777: #0: (rtnl_mutex){+.+.}, at: [<00000000a98026e2>] dev_ioctl+0x285/0xca0 net/core/dev_ioctl.c:421 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.111+ #53 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 71 Comm: kworker/1:2 Not tainted 4.14.111+ #53 Workqueue: events rtc_timer_do_work task: 0000000064748ba0 task.stack: 00000000138a340c RIP: 0010:rtc_timer_do_work+0x20d/0x610 drivers/rtc/interface.c:881 RSP: 0018:ffff8881d5f17b90 EFLAGS: 00000246 RAX: ffff8881d5f08000 RBX: dffffc0000000000 RCX: 1ffff1103ab82722 RDX: 1ffff1103ab8272c RSI: ffff8881d5c13908 RDI: ffff8881d5c13960 RBP: ffff8881d5f17d20 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d5c13968 R13: ffff8881d5c13980 R14: ffff8881d5c13990 R15: ffffffffb4084260 FS: 0000000000000000(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e921000 CR3: 00000000a5426003 CR4: 00000000001606a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: 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 Code: e8 03 80 3c 18 00 0f 85 79 03 00 00 4d 8b 7c 24 f0 4d 85 ff 74 25 e8 13 66 28 ff 49 8d 7c 24 f8 48 89 fa 48 c1 ea 03 80 3c 1a 00 <0f> 85 78 03 00 00 49 8b 7c 24 f8 e8 43 ec b7 00 e8 ee 65 28 ff