ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
INFO: task syz-executor.3:15705 blocked for more than 140 seconds.
      Not tainted 4.14.129+ #11
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D29328 15705   1853 0x80000000
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline]
 rwsem_down_read_failed+0x21f/0x3c0 kernel/locking/rwsem-xadd.c:309
 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:66 [inline]
 down_read+0x45/0xa0 kernel/locking/rwsem.c:26
 exit_mm kernel/exit.c:511 [inline]
 do_exit+0x503/0x2960 kernel/exit.c:861
INFO: task syz-executor.3:15717 blocked for more than 140 seconds.
      Not tainted 4.14.129+ #11
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D29344 15717   1853 0x80000000
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline]
 rwsem_down_read_failed+0x21f/0x3c0 kernel/locking/rwsem-xadd.c:309
 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:66 [inline]
 down_read+0x45/0xa0 kernel/locking/rwsem.c:26
 exit_mm kernel/exit.c:511 [inline]
 do_exit+0x503/0x2960 kernel/exit.c:861

Showing all locks held in the system:
1 lock held by khungtaskd/23:
 #0:  (tasklist_lock){.+.?}, at: [<00000000cdbe2983>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541
2 locks held by getty/1759:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000f100c767>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000066d28fb>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156
1 lock held by syz-executor.3/15705:
 #0:  (&mm->mmap_sem){++++}, at: [<000000001f670be5>] exit_mm kernel/exit.c:511 [inline]
 #0:  (&mm->mmap_sem){++++}, at: [<000000001f670be5>] do_exit+0x503/0x2960 kernel/exit.c:861
1 lock held by syz-executor.3/15717:
 #0:  (&mm->mmap_sem){++++}, at: [<000000001f670be5>] exit_mm kernel/exit.c:511 [inline]
 #0:  (&mm->mmap_sem){++++}, at: [<000000001f670be5>] do_exit+0x503/0x2960 kernel/exit.c:861

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

NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.129+ #11
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15707 Comm: syz-executor.3 Not tainted 4.14.129+ #11
task: 000000004fae8ca0 task.stack: 0000000020f81883
RIP: 0010:___might_sleep+0xd0/0x280 kernel/sched/core.c:6121
RSP: 0018:ffff8881cdaffaa8 EFLAGS: 00000246
RAX: 0000000000000007 RBX: dffffc0000000000 RCX: 1ffffffff4a027c4
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff88819ed75e24
RBP: ffff8881cdaffac0 R08: ffffffffa2e053cc R09: dffffc0000000000
R10: ffff8881cdaffc68 R11: 0000000000000001 R12: 0000000000000000
R13: 00000000000002eb R14: ffff88819ed75e00 R15: ffff88819ed75e00
FS:  00007f509c67d700(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77f1f9d000 CR3: 00000001c79d0005 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __mutex_lock_common kernel/locking/mutex.c:747 [inline]
 __mutex_lock+0xc8/0x1430 kernel/locking/mutex.c:893
 perf_mmap+0x50c/0x1390 kernel/events/core.c:5416
 call_mmap include/linux/fs.h:1793 [inline]
 mmap_region+0x7c9/0xf00 mm/mmap.c:1732
 do_mmap+0x548/0xb80 mm/mmap.c:1510
 do_mmap_pgoff include/linux/mm.h:2180 [inline]
 vm_mmap_pgoff+0x177/0x1c0 mm/util.c:333
 SYSC_mmap_pgoff mm/mmap.c:1560 [inline]
 SyS_mmap_pgoff+0xf4/0x1b0 mm/mmap.c:1518
 do_syscall_64+0x19b/0x510 arch/x86/entry/common.c:292
Code: 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 70 01 00 00 8b 05 8f 17 6d 02 83 e8 01 83 f8 01 76 0b 5b 41 5c <41> 5d 41 5e 41 5f 5d c3 48 c7 c0 a0 06 42 a6 48 ba 00 00 00 00