ip6_tunnel: K xmit: Local address not yet configured!
ip6_tunnel: K xmit: Local address not yet configured!
ip6_tunnel: – xmit: Local address not yet configured!
ip6_tunnel: K xmit: Local address not yet configured!
INFO: task syz-executor.2:6357 blocked for more than 140 seconds.
      Not tainted 4.9.194+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D29224  6357   6151 0x00000004
 0000000000000087 ffff8801d6a3c740 ffff8801d413dd80 ffff8801db721000
 ffff8801ca2797c0 ffff8801db721018 ffff8801d399fb68 ffffffff8281af8e
 0000000000000000 0000000000000000 000000000000004c ffff8801db7218f0
Call Trace:
 [<0000000001dce7fa>] schedule+0x92/0x1c0 kernel/sched/core.c:3546
 [<00000000e0771324>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579
 [<00000000f09ed33a>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<00000000f09ed33a>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621
 [<00000000be1f548f>] loop_control_ioctl+0x17f/0x320 drivers/block/loop.c:1987
 [<00000000846e0053>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<00000000846e0053>] file_ioctl fs/ioctl.c:493 [inline]
 [<00000000846e0053>] do_vfs_ioctl+0xb87/0x11d0 fs/ioctl.c:677
 [<0000000084620262>] SYSC_ioctl fs/ioctl.c:694 [inline]
 [<0000000084620262>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 [<00000000312d0dc8>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<00000000940f6875>] 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: [<00000000f9205330>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline]
 #0:  (rcu_read_lock){......}, at: [<00000000f9205330>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263
 #1:  (tasklist_lock){.+.+..}, at: [<00000000e9f4903a>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336
2 locks held by getty/2024:
 #0:  (&tty->ldisc_sem){++++++}, at: [<00000000e5ff74bb>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<00000000de4425bc>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156
2 locks held by syz-executor.2/6357:
 #0:  (loop_index_mutex){+.+.+.}, at: [<00000000a2216c74>] loop_control_ioctl+0x7a/0x320 drivers/block/loop.c:1973
 #1:  (&lo->lo_ctl_mutex#2){+.+.+.}, at: [<00000000be1f548f>] loop_control_ioctl+0x17f/0x320 drivers/block/loop.c:1987
2 locks held by syz-executor.0/6348:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<0000000042d574e6>] lo_ioctl+0x8e/0x1b10 drivers/block/loop.c:1404
 #1:  (&bdev->bd_mutex){+.+.+.}, at: [<000000001145f98f>] blkdev_reread_part+0x1f/0x40 block/ioctl.c:189
2 locks held by blkid/6359:
 #0:  (&bdev->bd_mutex){+.+.+.}, at: [<000000008b4d4908>] __blkdev_get+0x10e/0xeb0 fs/block_dev.c:1273
 #1:  (loop_index_mutex){+.+.+.}, at: [<00000000ad375b8f>] lo_open+0x1d/0xb0 drivers/block/loop.c:1621
1 lock held by syz-executor.5/6388:
 #0:  (loop_index_mutex){+.+.+.}, at: [<00000000a2216c74>] loop_control_ioctl+0x7a/0x320 drivers/block/loop.c:1973
1 lock held by syz-executor.5/6391:
 #0:  (loop_index_mutex){+.+.+.}, at: [<00000000a2216c74>] loop_control_ioctl+0x7a/0x320 drivers/block/loop.c:1973

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

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.194+ #0
 ffff8801d98d7cc8 ffffffff81b67001 0000000000000001 0000000000000000
 0000000000000001 ffffffff81099d01 dffffc0000000000 ffff8801d98d7d00
 ffffffff81b7229c 0000000000000001 0000000000000000 0000000000000001
Call Trace:
 [<000000007d70ef67>] __dump_stack lib/dump_stack.c:15 [inline]
 [<000000007d70ef67>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<000000000e7a114a>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99
 [<00000000300ac9c8>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60
 [<0000000002cff46d>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<000000004175e39e>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<000000004175e39e>] check_hung_task kernel/hung_task.c:126 [inline]
 [<000000004175e39e>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline]
 [<000000004175e39e>] watchdog+0x670/0xaf0 kernel/hung_task.c:263
 [<00000000670929bc>] kthread+0x278/0x310 kernel/kthread.c:211
 [<0000000088f96944>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8282a0e1