ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
INFO: task syz-executor1:10408 blocked for more than 140 seconds.
      Not tainted 4.9.146+ #84
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor1   D28816 10408   2111 0x90000004
 ffff8801a2472f80 ffff8801a0b66880 ffff8801a0d3ee00 ffff8801d98c97c0
 ffff8801db721018 ffff8801a1587840 ffffffff8280a0f2 ffff8801a1587818
 ffffffff81206f07 0000000000000000 00ff8801a2473828 ffff8801db7218f0
Call Trace:
 [<ffffffff8280b61f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff828163bc>] rwsem_down_read_failed+0x26c/0x400 kernel/locking/rwsem-xadd.c:260
 [<ffffffff81b76068>] call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 [<ffffffff82814182>] __down_read arch/x86/include/asm/rwsem.h:65 [inline]
 [<ffffffff82814182>] down_read+0x52/0xb0 kernel/locking/rwsem.c:24
 [<ffffffff810e6916>] exit_mm kernel/exit.c:480 [inline]
 [<ffffffff810e6916>] do_exit+0x3c6/0x2a50 kernel/exit.c:820
 [<ffffffff810ed431>] do_group_exit+0x111/0x300 kernel/exit.c:937
 [<ffffffff8110ebf1>] get_signal+0x4e1/0x1460 kernel/signal.c:2321
 [<ffffffff81052b35>] do_signal+0x95/0x1b00 arch/x86/kernel/signal.c:807
 [<ffffffff81003e2e>] exit_to_usermode_loop+0x10e/0x150 arch/x86/entry/common.c:158
 [<ffffffff81005932>] prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 [<ffffffff81005932>] syscall_return_slowpath arch/x86/entry/common.c:263 [inline]
 [<ffffffff81005932>] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290
 [<ffffffff8281a393>] 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: [<ffffffff8131c22c>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c22c>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813feb1f>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
2 locks held by getty/2023:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82818482>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d38032>] n_tty_read+0x202/0x1830 drivers/tty/n_tty.c:2156
1 lock held by syz-executor1/10408:
 #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff810e6916>] exit_mm kernel/exit.c:480 [inline]
 #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff810e6916>] do_exit+0x3c6/0x2a50 kernel/exit.c:820
1 lock held by syz-executor1/10411:
 #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff810e6916>] exit_mm kernel/exit.c:480 [inline]
 #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff810e6916>] do_exit+0x3c6/0x2a50 kernel/exit.c:820
1 lock held by syz-executor1/10414:
 #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff810e6916>] exit_mm kernel/exit.c:480 [inline]
 #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff810e6916>] do_exit+0x3c6/0x2a50 kernel/exit.c:820
1 lock held by syz-executor1/10418:
 #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff810e6916>] exit_mm kernel/exit.c:480 [inline]
 #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff810e6916>] do_exit+0x3c6/0x2a50 kernel/exit.c:820

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

NMI backtrace for cpu 0
CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.146+ #84
 ffff8801d9907d08 ffffffff81b43aa9 0000000000000000 0000000000000000
 0000000000000000 0000000000000001 ffffffff81098440 ffff8801d9907d40
 ffffffff81b4ebb9 0000000000000000 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81b43aa9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b43aa9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b4ebb9>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b4eb4c>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff81098544>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131c7bd>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131c7bd>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131c7bd>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131c7bd>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff81142ccd>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff8281a55c>] 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: 10431 Comm: syz-executor1 Not tainted 4.9.146+ #84
task: ffff8801a20f97c0 task.stack: ffff8801da5d0000
RIP: 0010:[<ffffffff81b5f943>] 
c [<ffffffff81b5f943>] strlen+0x23/0xa0 lib/string.c:481
RSP: 0000:ffff8801da5d7990  EFLAGS: 00000086
RAX: 0000000000000000 RBX: ffff8801cbedc740 RCX: 0000000000000000
RDX: 1ffffffff05526c0 RSI: ffff8801cbedc740 RDI: ffffffff82a93600
RBP: ffff8801da5d79a8 R08: ffff8801a20fa0b8 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff82a93600
R13: ffffffff830bdb80 R14: ffff8801da5d7a98 R15: ffff8801cbedc740
FS:  00007f9d9e067700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f14bdd93000 CR3: 00000001c691b000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Stack:
 1ffff1003b4baf34
c ffff8801cbedc740
c 1ffff1003b4baf3f
c ffff8801da5d7ac0
c
 ffffffff811ff47d
c 000000008100226a
c 0013001800000000
c ffff8801cbedc758
c
 0000000000000012
c 1ffff1003b4baf3d
c ffff8801cbedc758
c 0000000041b58ab3
c
Call Trace:
 [<ffffffff811ff47d>] trace_event_get_offsets_lock include/trace/events/lock.h:38 [inline]
 [<ffffffff811ff47d>] perf_trace_lock+0xdd/0x520 include/trace/events/lock.h:38
 [<ffffffff8120d615>] trace_lock_release include/trace/events/lock.h:57 [inline]
 [<ffffffff8120d615>] lock_release+0x935/0xc20 kernel/locking/lockdep.c:3774
 [<ffffffff82812cf0>] __mutex_unlock_common_slowpath kernel/locking/mutex.c:740 [inline]
 [<ffffffff82812cf0>] __mutex_unlock_slowpath+0x160/0x3c0 kernel/locking/mutex.c:765
 [<ffffffff82812f59>] mutex_unlock+0x9/0x10 kernel/locking/mutex.c:437
 [<ffffffff813da3ba>] perf_mmap+0x64a/0x1430 kernel/events/core.c:5283
 [<ffffffff814b440c>] mmap_region+0x80c/0xf90 mm/mmap.c:1726
 [<ffffffff814b50cd>] do_mmap+0x53d/0xbb0 mm/mmap.c:1505
 [<ffffffff8146a108>] do_mmap_pgoff include/linux/mm.h:2032 [inline]
 [<ffffffff8146a108>] vm_mmap_pgoff+0x168/0x1b0 mm/util.c:329
 [<ffffffff814af74e>] SYSC_mmap_pgoff mm/mmap.c:1555 [inline]
 [<ffffffff814af74e>] SyS_mmap_pgoff+0xfe/0x1b0 mm/mmap.c:1513
 [<ffffffff8105d476>] SYSC_mmap arch/x86/kernel/sys_x86_64.c:96 [inline]
 [<ffffffff8105d476>] SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:87
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff8281a393>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 
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c<48> 
c89 
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c38 
cd0 
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c04 
c84 
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c75 
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c41 
c80 
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c24 
c00 
c74 
c3b 
c