ip6_tunnel: @ xmit: Local address not yet configured!
INFO: task syz-executor5:25883 blocked for more than 140 seconds.
      Not tainted 4.9.135+ #58
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D28488 25883   2114 0x00000004
 ffff8801c63a5f00 0000000000000000 ffff8801d3cba100 ffff8801da6b2f80
 ffff8801db721018 ffff8801d3be76e8 ffffffff827f3192 ffff8801c97579c0
 ffff8801d3be7698 ffffffff81206eab 0000000000000282 ffff8801db7218f0
Call Trace:
 [<ffffffff827f46bf>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff8155c729>] d_wait_lookup fs/dcache.c:2455 [inline]
 [<ffffffff8155c729>] d_alloc_parallel+0x10a9/0x1710 fs/dcache.c:2537
 [<ffffffff815378e1>] lookup_open+0x4b1/0x18b0 fs/namei.c:3134
 [<ffffffff8153d320>] do_last fs/namei.c:3315 [inline]
 [<ffffffff8153d320>] path_openat+0x1330/0x2790 fs/namei.c:3534
 [<ffffffff81541607>] do_filp_open+0x197/0x270 fs/namei.c:3568
 [<ffffffff8150616d>] do_sys_open+0x30d/0x5c0 fs/open.c:1072
 [<ffffffff8150644d>] SYSC_open fs/open.c:1090 [inline]
 [<ffffffff8150644d>] SyS_open+0x2d/0x40 fs/open.c:1085
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82803413>] 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: [<ffffffff8131bb4c>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131bb4c>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fe314>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
2 locks held by getty/2025:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff828014e2>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<ffffffff81d2b032>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by syz-executor3/12580:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d63>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
1 lock held by syz-executor5/25883:
 #0:  (&type->i_mutex_dir_key#7){++++++}, at: [<ffffffff8153d2f9>] inode_lock_shared include/linux/fs.h:776 [inline]
 #0:  (&type->i_mutex_dir_key#7){++++++}, at: [<ffffffff8153d2f9>] do_last fs/namei.c:3314 [inline]
 #0:  (&type->i_mutex_dir_key#7){++++++}, at: [<ffffffff8153d2f9>] path_openat+0x1309/0x2790 fs/namei.c:3534
1 lock held by syz-executor5/25885:
 #0:  (&type->i_mutex_dir_key#7){++++++}, at: [<ffffffff8157650c>] inode_lock include/linux/fs.h:766 [inline]
 #0:  (&type->i_mutex_dir_key#7){++++++}, at: [<ffffffff8157650c>] lock_mount+0x8c/0x2c0 fs/namespace.c:2101
1 lock held by syz-executor5/25886:
 #0:  (&type->i_mutex_dir_key#7){++++++}, at: [<ffffffff8153d2f9>] inode_lock_shared include/linux/fs.h:776 [inline]
 #0:  (&type->i_mutex_dir_key#7){++++++}, at: [<ffffffff8153d2f9>] do_last fs/namei.c:3314 [inline]
 #0:  (&type->i_mutex_dir_key#7){++++++}, at: [<ffffffff8153d2f9>] path_openat+0x1309/0x2790 fs/namei.c:3534

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

NMI backtrace for cpu 0
CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.135+ #58
 ffff8801d9907d08 ffffffff81b36bf9 0000000000000000 0000000000000000
 0000000000000000 0000000000000001 ffffffff81098330 ffff8801d9907d40
 ffffffff81b41d09 0000000000000000 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81b36bf9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b36bf9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b41d09>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b41c9c>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff81098434>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131c0dd>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131c0dd>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131c0dd>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131c0dd>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff811428dd>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff828035dc>] 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
CPU: 1 PID: 25864 Comm: syz-executor5 Not tainted 4.9.135+ #58
task: ffff8801ab0daf80 task.stack: ffff8801c9750000
RIP: 0010:[<ffffffff81206b5b>] 
c [<ffffffff81206b5b>] trace_hardirqs_on_caller+0x3b/0x590 kernel/locking/lockdep.c:2701
RSP: 0018:ffff8801c9757388  EFLAGS: 00000097
RAX: 0000000000000003 RBX: 0000000000000282 RCX: 0000000000000002
RDX: 0000000000000004 RSI: 0000000000000002 RDI: ffffffff831f2a20
RBP: ffff8801c9757398 R08: 1ffff100392eaea0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff82802b4a
R13: ffff8801c97574e0 R14: ffff8801c97574f8 R15: ffff8801d4b207a8
FS:  00007efd2f6cd700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8b4c1a5000 CR3: 00000001d2a61000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000282
c ffff8801d4b207a8
c ffff8801c97573a8
c ffffffff812070bd
c
 ffff8801c97573c8
c ffffffff82802b4a
c 1ffff100392eae80
c fffffffffffffe00
c
 ffff8801c9757488
c ffffffff811ee35c
c 00000000000001d7
c ffff8801d4b20708
c
Call Trace:
 [<ffffffff812070bd>] trace_hardirqs_on+0xd/0x10 kernel/locking/lockdep.c:2743
 [<ffffffff82802b4a>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:162 [inline]
 [<ffffffff82802b4a>] _raw_spin_unlock_irqrestore+0x5a/0x70 kernel/locking/spinlock.c:191
 [<ffffffff811ee35c>] spin_unlock_irqrestore include/linux/spinlock.h:362 [inline]
 [<ffffffff811ee35c>] prepare_to_wait_event+0x26c/0x8c0 kernel/sched/wait.c:238
 [<ffffffff8185a1de>] request_wait_answer+0x22e/0x820 fs/fuse/dev.c:470
 [<ffffffff8185ebe9>] __fuse_request_send+0x109/0x1b0 fs/fuse/dev.c:491
 [<ffffffff8185eced>] fuse_request_send+0x5d/0x70 fs/fuse/dev.c:504
 [<ffffffff81866814>] fuse_simple_request+0x2f4/0x660 fs/fuse/dev.c:562
 [<ffffffff8186ee53>] fuse_lookup_name+0x253/0x5d0 fs/fuse/dir.c:369
 [<ffffffff8186f2c3>] fuse_lookup+0xf3/0x3b0 fs/fuse/dir.c:407
 [<ffffffff8186f73f>] fuse_atomic_open+0x1bf/0x2d0 fs/fuse/dir.c:546
 [<ffffffff8153826c>] atomic_open fs/namei.c:3055 [inline]
 [<ffffffff8153826c>] lookup_open+0xe3c/0x18b0 fs/namei.c:3194
 [<ffffffff8153d320>] do_last fs/namei.c:3315 [inline]
 [<ffffffff8153d320>] path_openat+0x1330/0x2790 fs/namei.c:3534
 [<ffffffff81541607>] do_filp_open+0x197/0x270 fs/namei.c:3568
 [<ffffffff8150616d>] do_sys_open+0x30d/0x5c0 fs/open.c:1072
 [<ffffffff8150644d>] SYSC_open fs/open.c:1090 [inline]
 [<ffffffff8150644d>] SyS_open+0x2d/0x40 fs/open.c:1085
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82803413>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 
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c<8b> 
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c