ip6_tunnel:  xmit: Local address not yet configured! ip6_tunnel:  xmit: Local address not yet configured! ip6_tunnel:  xmit: Local address not yet configured! ip6_tunnel:  xmit: Local address not yet configured! ip6_tunnel:  xmit: Local address not yet configured! INFO: task init:22238 blocked for more than 140 seconds. Not tainted 4.9.189+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D28440 22238 1 0x00000000 0000000000000087 ffff8801cfc10000 ffff8801a0273c80 ffff8801db721000 ffff8801a35ec740 ffff8801db721018 ffff8801cfccf758 ffffffff82818d1e ffff88010000000d 1ffff10039f99ed4 00ffe8ffffd17e48 ffff8801db7218f0 Call Trace: [<000000001e72e259>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<00000000cb73737e>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579 [<000000002983b45a>] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [<000000002983b45a>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621 [<0000000064c17531>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] [<0000000064c17531>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 [<00000000bea4356b>] chrdev_open+0x230/0x630 fs/char_dev.c:398 [<00000000057e6d7e>] do_dentry_open+0x422/0xd20 fs/open.c:791 [<0000000081010936>] vfs_open+0x105/0x230 fs/open.c:904 [<00000000a17c1c8a>] do_last fs/namei.c:3457 [inline] [<00000000a17c1c8a>] path_openat+0xbf5/0x2f60 fs/namei.c:3581 [<00000000f8d24663>] do_filp_open+0x1a1/0x280 fs/namei.c:3615 [<000000006dd88caf>] do_sys_open+0x2f0/0x610 fs/open.c:1097 [<00000000f460673e>] SYSC_open fs/open.c:1115 [inline] [<00000000f460673e>] SyS_open+0x2d/0x40 fs/open.c:1110 [<000000003986735f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<000000003c9b467d>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Showing all locks held in the system: 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [<0000000085009b01>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<0000000085009b01>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<000000001c30c89a>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1911: #0: (&f->f_pos_lock){+.+.+.}, at: [<0000000056d73ffe>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2039: #0: (&tty->ldisc_sem){++++++}, at: [<00000000555a76a6>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.+.}, at: [<000000004e2e4027>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 1 lock held by init/22238: #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/22239: #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/22240: #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/22241: #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/22592: #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000064c17531>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by syz-executor.0/27200: #0: (rtnl_mutex){+.+.+.}, at: [<00000000dba5f906>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 1 lock held by syz-executor.0/27201: #0: (rtnl_mutex){+.+.+.}, at: [<00000000dba5f906>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 1 lock held by syz-executor.0/27205: #0: (rtnl_mutex){+.+.+.}, at: [<00000000dba5f906>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.189+ #2 ffff8801d98d7cc8 ffffffff81b65c01 0000000000000000 0000000000000000 0000000000000000 ffffffff81099a01 dffffc0000000000 ffff8801d98d7d00 ffffffff81b70e9c 0000000000000000 0000000000000000 0000000000000000 Call Trace: [<00000000c577277b>] __dump_stack lib/dump_stack.c:15 [inline] [<00000000c577277b>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<00000000af1e2c17>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<00000000e7a01dcc>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<000000009fca2808>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<0000000078167232>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<0000000078167232>] check_hung_task kernel/hung_task.c:126 [inline] [<0000000078167232>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<0000000078167232>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<00000000a4f36b4e>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000502d6005>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 27192 Comm: syz-executor.3 Not tainted 4.9.189+ #2 task: 000000001ed7c940 task.stack: 000000000924a0c9 RIP: 0010:[] c [<000000004b1c1073>] mark_held_locks+0x21/0x100 kernel/locking/lockdep.c:2648 RSP: 0018:ffff8801af9278b8 EFLAGS: 00000082 RAX: dffffc0000000000 RBX: ffff8801d50e0000 RCX: 1ffff1003aa1c11a RDX: ffff8801d50e08a8 RSI: 0000000000000001 RDI: ffff8801d50e08a8 RBP: ffff8801af9278d0 R08: 0000000000000001 R09: ffff8801d50e08d0 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff810f1e3a R13: ffff8801908ab080 R14: ffff8801d50e0000 R15: dffffc0000000000 FS: 00007f48d63ad700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcf80dddc0 CR3: 000000017edfd000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Stack: ffff8801908ab080c 0000000000007ca9c dffffc0000000000c ffff8801af9278f0c ffffffff8120cb55c 0000000000000200c ffffffff8241eca1c ffff8801af927900c ffffffff8120cd7dc ffff8801af927920c ffffffff810f1e3ac 000000000000f951c Call Trace: [<000000009fe297cb>] __trace_hardirqs_on_caller kernel/locking/lockdep.c:2689 [inline] [<000000009fe297cb>] trace_hardirqs_on_caller+0x385/0x5a0 kernel/locking/lockdep.c:2736 [<000000005945933b>] trace_hardirqs_on+0xd/0x10 kernel/locking/lockdep.c:2743 [<00000000c732f8c7>] __local_bh_enable_ip+0x6a/0xe0 kernel/softirq.c:190 [<000000008afd5103>] local_bh_enable include/linux/bottom_half.h:31 [inline] [<000000008afd5103>] get_next_corpse net/netfilter/nf_conntrack_core.c:1581 [inline] [<000000008afd5103>] nf_ct_iterate_cleanup+0x258/0x480 net/netfilter/nf_conntrack_core.c:1637 [<00000000a9abb4be>] masq_device_event+0xa8/0xd0 net/ipv4/netfilter/nf_nat_masquerade_ipv4.c:100 [<0000000066e8c83b>] notifier_call_chain+0xb4/0x1d0 kernel/notifier.c:93 [<00000000136204e8>] __raw_notifier_call_chain kernel/notifier.c:394 [inline] [<00000000136204e8>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 [<0000000046dacd08>] call_netdevice_notifiers_info+0x56/0x70 net/core/dev.c:1647 [<00000000512c7cd7>] call_netdevice_notifiers net/core/dev.c:1663 [inline] [<00000000512c7cd7>] __dev_notify_flags+0x1a8/0x270 net/core/dev.c:6544 [<00000000c23e24e5>] dev_change_flags+0xf7/0x140 net/core/dev.c:6575 [<00000000785dfb46>] devinet_ioctl+0xf59/0x1610 net/ipv4/devinet.c:1060 [<000000001ab90b11>] inet_ioctl+0x10b/0x1a0 net/ipv4/af_inet.c:904 [<000000004f2525b3>] sock_do_ioctl+0x6a/0xb0 net/socket.c:906 [<000000005a764f62>] sock_ioctl+0x24c/0x3d0 net/socket.c:992 [<00000000d88b70bc>] vfs_ioctl fs/ioctl.c:43 [inline] [<00000000d88b70bc>] file_ioctl fs/ioctl.c:493 [inline] [<00000000d88b70bc>] do_vfs_ioctl+0xb87/0x11d0 fs/ioctl.c:677 [<00000000b479bd29>] SYSC_ioctl fs/ioctl.c:694 [inline] [<00000000b479bd29>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 [<000000003986735f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<000000003c9b467d>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: cc0 ce9 c44 cf9 cff cff c0f c1f c40 c00 c48 cb8 c00 c00 c00 c00 c00 cfc cff cdf c55 c48 c89 ce5 c41 c57 c41 c56 c49 c89 cfe c48 c81 cc7 ca8 c08 c00 c00 c48 c89 cfa c41 c55 c<48> cc1 cea c03 c41 c54 c53 c48 c83 cec c10 c0f cb6 c04 c02 c84 cc0 c74 c08 c3c c03 c