ip6_tunnel: › xmit: Local address not yet configured!
INFO: task syz-executor.5:12974 blocked for more than 140 seconds.
      Not tainted 4.9.170+ #48
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D28280 12974   2112 0x80000002
 ffff8801c681c740 ffff8801d4b6f380 ffff8801db621000 ffff8801a318df00
 ffff8801db621018 ffff8801d7db76b8 ffffffff82801a4e 0000000000000046
 ffffffff82e28708 00ff8801d7db7638 ffff8801db6218f0 1ffff1003afb6ec6
Call Trace:
 [<0000000060f2c557>] schedule+0x92/0x1c0 kernel/sched/core.c:3546
 [<00000000f1077aba>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579
 [<00000000459ba88c>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<00000000459ba88c>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621
 [<00000000d80bdf56>] lo_release+0x1e/0x1b0 drivers/block/loop.c:1664
 [<000000006dfc1fd2>] __blkdev_put+0x461/0x840 fs/block_dev.c:1606
 [<000000000125eaa6>] blkdev_put+0x88/0x560 fs/block_dev.c:1671
 [<0000000052c7bd0f>] blkdev_close+0x8b/0xb0 fs/block_dev.c:1678
 [<00000000f7b102b8>] __fput+0x274/0x720 fs/file_table.c:208
 [<0000000052bdae12>] ____fput+0x16/0x20 fs/file_table.c:244
 [<0000000072cbc2ad>] task_work_run+0x108/0x180 kernel/task_work.c:116
 [<00000000022e55a7>] exit_task_work include/linux/task_work.h:21 [inline]
 [<00000000022e55a7>] do_exit+0x78b/0x2aa0 kernel/exit.c:841
 [<0000000022e33cdd>] do_group_exit+0x111/0x300 kernel/exit.c:945
 [<0000000041face39>] get_signal+0x348/0x1aa0 kernel/signal.c:2380
 [<00000000e7568136>] do_signal+0x9c/0x1920 arch/x86/kernel/signal.c:807
 [<00000000cfa6aca3>] exit_to_usermode_loop+0x11c/0x160 arch/x86/entry/common.c:158
 [<00000000b9e6a0b5>] prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 [<00000000b9e6a0b5>] syscall_return_slowpath arch/x86/entry/common.c:263 [inline]
 [<00000000b9e6a0b5>] do_syscall_64+0x3f7/0x570 arch/x86/entry/common.c:290
 [<000000009e0e1ddc>] 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: [<00000000aecaf00b>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline]
 #0:  (rcu_read_lock){......}, at: [<00000000aecaf00b>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263
 #1:  (tasklist_lock){.+.+..}, at: [<000000008c43abf6>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4339
1 lock held by rsyslogd/1888:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<000000001e4b7f4b>] __fdget_pos+0xa8/0xd0 fs/file.c:782
2 locks held by getty/2016:
 #0:  (&tty->ldisc_sem){++++++}, at: [<00000000b0598dea>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<000000009bea5221>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156
2 locks held by syz-executor.5/12974:
 #0:  (&bdev->bd_mutex){+.+.+.}, at: [<00000000a8b229aa>] __blkdev_put+0xbb/0x840 fs/block_dev.c:1587
 #1:  (loop_index_mutex){+.+.+.}, at: [<00000000d80bdf56>] lo_release+0x1e/0x1b0 drivers/block/loop.c:1664
2 locks held by syz-executor.1/15048:
 #0:  (loop_ctl_mutex/1){+.+.+.}, at: [<00000000c8e7ba4f>] lo_ioctl+0x85/0x1a10 drivers/block/loop.c:1405
 #1:  (&bdev->bd_mutex){+.+.+.}, at: [<000000000d9737a6>] blkdev_reread_part+0x1f/0x40 block/ioctl.c:189
2 locks held by blkid/15040:
 #0:  (&bdev->bd_mutex){+.+.+.}, at: [<00000000567fe636>] __blkdev_get+0x10e/0xeb0 fs/block_dev.c:1273
 #1:  (loop_index_mutex){+.+.+.}, at: [<00000000f60f6b06>] lo_open+0x1d/0xb0 drivers/block/loop.c:1622
3 locks held by syz-executor.5/15047:
 #0:  (&bdev->bd_mutex){+.+.+.}, at: [<00000000a8b229aa>] __blkdev_put+0xbb/0x840 fs/block_dev.c:1587
 #1:  (loop_index_mutex){+.+.+.}, at: [<00000000d80bdf56>] lo_release+0x1e/0x1b0 drivers/block/loop.c:1664
 #2:  (loop_ctl_mutex#2){+.+.+.}, at: [<00000000439a81b2>] __lo_release drivers/block/loop.c:1642 [inline]
 #2:  (loop_ctl_mutex#2){+.+.+.}, at: [<00000000439a81b2>] lo_release+0x84/0x1b0 drivers/block/loop.c:1665

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.170+ #48
 ffff8801d98d7cc8 ffffffff81b4fb21 0000000000000000 0000000000000000
 0000000000000000 ffffffff81097401 dffffc0000000000 ffff8801d98d7d00
 ffffffff81b5adbc 0000000000000000 0000000000000000 0000000000000000
Call Trace:
 [<00000000d76efd12>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000d76efd12>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<0000000098494a0a>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99
 [<00000000b6dfd2e6>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60
 [<000000005eae5b42>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<0000000098ba0251>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<0000000098ba0251>] check_hung_task kernel/hung_task.c:126 [inline]
 [<0000000098ba0251>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline]
 [<0000000098ba0251>] watchdog+0x670/0xaf0 kernel/hung_task.c:263
 [<00000000b6b58aa0>] kthread+0x278/0x310 kernel/kthread.c:211
 [<00000000dda95cc3>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff82810ac2