INIT: Id "3" respawning too fast: disabled for 5 minutes

INIT: Id "1" respawning too fast: disabled for 5 minutes

INIT: Id "2" respawning too fast: disabled for 5 minutes

INIT: Id "4" respawning too fast: disabled for 5 minutes

INIT: Id "6" respawning too fast: disabled for 5 minutes
Warning: Permanently added '10.128.10.54' (ECDSA) to the list of known hosts.
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[  859.287022] INFO: task syz-executor688:2175 blocked for more than 140 seconds.
[  859.294631]       Not tainted 4.9.135+ #117
[  859.299023] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  859.306996] syz-executor688 D29976  2175      1 0x00000000
[  859.312746]  ffff8801cb57df00 ffff8801cb4e5d80 ffff8801cb4e5d80 ffff8801cb5797c0
[  859.320867]  ffff8801db721018 ffff8801cacf7840 ffffffff82806912 0000000000000000
[  859.329135]  ffffffff83cc4350 0000000000000000 00000000000044ad ffff8801db7218f0
[  859.337313] Call Trace:
[  859.340061]  [<ffffffff82806912>] ? __schedule+0x662/0x1b10
[  859.345897]  [<ffffffff82807e3f>] schedule+0x7f/0x1b0
[  859.351145]  [<ffffffff828135e5>] schedule_timeout+0x735/0xe20
[  859.357124]  [<ffffffff82812eb0>] ? usleep_range+0x140/0x140
[  859.363151]  [<ffffffff812436d7>] ? debug_lockdep_rcu_enabled+0x77/0x90
[  859.370251]  [<ffffffff81206ab7>] ? mark_held_locks+0xc7/0x130
[  859.376340]  [<ffffffff82816307>] ? _raw_spin_unlock_irq+0x27/0x50
[  859.382698]  [<ffffffff81206eab>] ? trace_hardirqs_on_caller+0x38b/0x590
[  859.389613]  [<ffffffff81d42f5c>] __ldsem_down_read_nested+0x33c/0x610
[  859.396399]  [<ffffffff82814c62>] ? ldsem_down_read+0x32/0x40
[  859.402306]  [<ffffffff81d42c20>] ? __ldsem_wake+0x330/0x330
[  859.408279]  [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.413977]  [<ffffffff81d3c8b5>] tty_ldisc_ref_wait+0x25/0x80
[  859.419962]  [<ffffffff81d28286>] tty_ioctl+0x3b6/0x2190
[  859.425402]  [<ffffffff81d27ed0>] ? no_tty+0xa0/0xa0
[  859.430566]  [<ffffffff819ec650>] ? avc_ss_reset+0x110/0x110
[  859.436358]  [<ffffffff81207714>] ? __lock_acquire+0x654/0x4a10
[  859.442475]  [<ffffffff81167805>] ? __might_sleep+0x95/0x1a0
[  859.448283]  [<ffffffff81d27ed0>] ? no_tty+0xa0/0xa0
[  859.453396]  [<ffffffff81546ddc>] do_vfs_ioctl+0x1ac/0x11a0
[  859.459127]  [<ffffffff81546c30>] ? ioctl_preallocate+0x220/0x220
[  859.465505]  [<ffffffff81a0aaa0>] ? selinux_parse_skb.constprop.42+0x1a90/0x1a90
[  859.473162]  [<ffffffff81ba7a0b>] ? check_preemption_disabled+0x3b/0x170
[  859.480042]  [<ffffffff81569e74>] ? __fget+0x214/0x3d0
[  859.485305]  [<ffffffff81569e9b>] ? __fget+0x23b/0x3d0
[  859.490585]  [<ffffffff81569ca7>] ? __fget+0x47/0x3d0
[  859.495769]  [<ffffffff819e548f>] ? security_file_ioctl+0x8f/0xc0
[  859.502347]  [<ffffffff81547e5f>] SyS_ioctl+0x8f/0xc0
[  859.507561]  [<ffffffff81547dd0>] ? do_vfs_ioctl+0x11a0/0x11a0
[  859.513826]  [<ffffffff810056ef>] do_syscall_64+0x19f/0x550
[  859.519556]  [<ffffffff82816b93>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[  859.526466] 
[  859.526466] Showing all locks held in the system:
[  859.532794] 2 locks held by khungtaskd/24:
[  859.537020]  #0:  (rcu_read_lock){......}, at: [<ffffffff8131bb4c>] watchdog+0x11c/0xa20
[  859.545779]  #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fe314>] debug_show_all_locks+0x79/0x218
[  859.555566] 1 lock held by rsyslogd/1893:
[  859.559726]  #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff8156cc6c>] __fdget_pos+0xac/0xd0
[  859.568634] 2 locks held by getty/2021:
[  859.572602]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.582108]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.592241] 2 locks held by syz-executor688/2172:
[  859.597098]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.606460]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.616478] 1 lock held by syz-executor688/2175:
[  859.621255]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.630699] 2 locks held by syz-executor688/2208:
[  859.635524]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.644897]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.654987] 1 lock held by syz-executor688/2211:
[  859.659760]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.669145] 2 locks held by syz-executor688/2233:
[  859.673978]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.683494]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.693486] 1 lock held by syz-executor688/2235:
[  859.698256]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.707614] 2 locks held by syz-executor688/2238:
[  859.712559]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.722078]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.732140] 2 locks held by syz-executor688/2257:
[  859.736989]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.746423]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.756424] 1 lock held by syz-executor688/2259:
[  859.761189]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.770558] 2 locks held by syz-executor688/2287:
[  859.775381]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.784868]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.794857] 1 lock held by syz-executor688/2289:
[  859.799616]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.809017] 2 locks held by syz-executor688/2372:
[  859.813839]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.823289]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.833395] 1 lock held by syz-executor688/2375:
[  859.838159]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.847536] 2 locks held by syz-executor688/2397:
[  859.852362]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.861730]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.872094] 1 lock held by syz-executor688/2399:
[  859.876826]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.886305] 2 locks held by syz-executor688/2427:
[  859.891155]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.900519]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.910606] 1 lock held by syz-executor688/2429:
[  859.915349]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.924721] 2 locks held by syz-executor688/2444:
[  859.929577]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.939249]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.949534] 1 lock held by syz-executor688/2447:
[  859.954277]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.963815] 2 locks held by syz-executor688/2463:
[  859.968675]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  859.978035]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  859.988043] 1 lock held by syz-executor688/2465:
[  859.993160]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.002676] 2 locks held by syz-executor688/2480:
[  860.007617]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.017017]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.027001] 1 lock held by syz-executor688/2483:
[  860.031742]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.041116] 2 locks held by syz-executor688/2523:
[  860.045942]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.055316]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.065298] 1 lock held by syz-executor688/2525:
[  860.070061]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.079521] 2 locks held by syz-executor688/2567:
[  860.084351]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.093832]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.103822] 1 lock held by syz-executor688/2569:
[  860.108718]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.118161] 2 locks held by syz-executor688/2591:
[  860.122985]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.132455]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.142460] 1 lock held by syz-executor688/2593:
[  860.147217]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.156673] 2 locks held by syz-executor688/2608:
[  860.161602]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.171037]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.181010] 1 lock held by syz-executor688/2611:
[  860.185748]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.195115] 2 locks held by syz-executor688/2621:
[  860.199964]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.209313]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.219702] 1 lock held by syz-executor688/2623:
[  860.224440]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.234205] 2 locks held by syz-executor688/2651:
[  860.239064]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.248588]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.258560] 1 lock held by syz-executor688/2653:
[  860.263298]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.272675] 2 locks held by syz-executor688/2682:
[  860.277518]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.286884]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.296826] 1 lock held by syz-executor688/2684:
[  860.301583]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.311054] 2 locks held by syz-executor688/2712:
[  860.315880]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.325244]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.335410] 1 lock held by syz-executor688/2714:
[  860.340175]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.349703] 2 locks held by syz-executor688/2736:
[  860.354526]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.363881]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.373966] 1 lock held by syz-executor688/2738:
[  860.378730]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.388206] 2 locks held by syz-executor688/2760:
[  860.393034]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.402617]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.412757] 1 lock held by syz-executor688/2762:
[  860.417621]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.426999] 2 locks held by syz-executor688/2790:
[  860.431994]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.441362]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.451543] 1 lock held by syz-executor688/2792:
[  860.456288]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.465739] 2 locks held by syz-executor688/2814:
[  860.470589]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.480128]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.490174] 1 lock held by syz-executor688/2816:
[  860.494912]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.504279] 2 locks held by syz-executor688/2838:
[  860.509123]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.518700]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.528820] 1 lock held by syz-executor688/2840:
[  860.533668]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.543051] 2 locks held by syz-executor688/2873:
[  860.547894]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.557523]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.567789] 1 lock held by syz-executor688/2876:
[  860.572690]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.582083] 2 locks held by syz-executor688/2897:
[  860.586933]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.596388]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.606722] 1 lock held by syz-executor688/2900:
[  860.611487]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.621077] 2 locks held by syz-executor688/2924:
[  860.626018]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.635401]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.645393] 1 lock held by syz-executor688/2926:
[  860.650149]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.659639] 2 locks held by syz-executor688/2978:
[  860.664488]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.673873]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.684126] 1 lock held by syz-executor688/2980:
[  860.688900]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.698338] 2 locks held by syz-executor688/3002:
[  860.703162]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.712639]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.722660] 1 lock held by syz-executor688/3004:
[  860.727424]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.736764] 2 locks held by syz-executor688/3020:
[  860.741608]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.751096]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.761175] 1 lock held by syz-executor688/3022:
[  860.765912]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.775282] 2 locks held by syz-executor688/3062:
[  860.780341]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.789707]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.799692] 1 lock held by syz-executor688/3064:
[  860.804537]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.814003] 2 locks held by syz-executor688/3098:
[  860.818851]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.828215]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.838189] 2 locks held by syz-executor688/3121:
[  860.843012]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.852381]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.862358] 1 lock held by syz-executor688/3124:
[  860.867112]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.876468] 2 locks held by syz-executor688/3151:
[  860.881319]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.890897]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.901059] 1 lock held by syz-executor688/3154:
[  860.905796]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.915169] 2 locks held by syz-executor688/3176:
[  860.920014]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.929367]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  860.939342] 1 lock held by syz-executor688/3178:
[  860.944079]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.953535] 1 lock held by syz-executor688/3210:
[  860.958287]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  860.967679] 2 locks held by syz-executor688/3211:
[  860.972596]  #0:  (&tty->legacy_mutex){+.+.+.}, at: [<ffffffff81d4205a>] tty_lock+0x6a/0xd0
[  860.981634]  #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814ca2>] ldsem_down_write+0x32/0x37
[  860.991177] 2 locks held by syz-executor688/3212:
[  860.996006]  #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40
[  861.005553]  #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0
[  861.015610] 
[  861.017251] =============================================
[  861.017251] 
[  861.024404] NMI backtrace for cpu 0
[  861.028093] CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.135+ #117
[  861.034669]  ffff8801d9907d08 ffffffff81b42b89 0000000000000000 0000000000000000
[  861.042771]  0000000000000000 0000000000000001 ffffffff81098330 ffff8801d9907d40
[  861.050800]  ffffffff81b4dc99 0000000000000000 0000000000000000 0000000000000004
[  861.058826] Call Trace:
[  861.061429]  [<ffffffff81b42b89>] dump_stack+0xc1/0x128
[  861.066835]  [<ffffffff81098330>] ? irq_force_complete_move+0x330/0x330
[  861.073586]  [<ffffffff81b4dc99>] nmi_cpu_backtrace.cold.0+0x48/0x87
[  861.080060]  [<ffffffff81098330>] ? irq_force_complete_move+0x330/0x330
[  861.086802]  [<ffffffff81b4dc2c>] nmi_trigger_cpumask_backtrace+0x12c/0x151
[  861.093891]  [<ffffffff81098434>] arch_trigger_cpumask_backtrace+0x14/0x20
[  861.100886]  [<ffffffff8131c0dd>] watchdog+0x6ad/0xa20
[  861.106143]  [<ffffffff8131bb4c>] ? watchdog+0x11c/0xa20
[  861.111620]  [<ffffffff811428dd>] kthread+0x26d/0x300
[  861.116811]  [<ffffffff8131ba30>] ? reset_hung_task_detector+0x20/0x20
[  861.123462]  [<ffffffff81142670>] ? kthread_park+0xa0/0xa0
[  861.129069]  [<ffffffff82816cc4>] ? __switch_to_asm+0x34/0x70
[  861.135079]  [<ffffffff81142670>] ? kthread_park+0xa0/0xa0
[  861.140689]  [<ffffffff81142670>] ? kthread_park+0xa0/0xa0
[  861.147827]  [<ffffffff82816d5c>] ret_from_fork+0x5c/0x70
[  861.154146] Sending NMI from CPU 0 to CPUs 1:
[  861.158715] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff828157a6
[  861.165939] Kernel panic - not syncing: hung_task: blocked tasks
[  861.172075] CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.135+ #117
[  861.178634]  ffff8801d9907cc8 ffffffff81b42b89 ffffffff82a78340 00000000ffffffff
[  861.186791]  0000000000000000 0000000000000000 dffffc0000000000 ffff8801d9907d88
[  861.194896]  ffffffff813f6aa5 0000000041b58ab3 ffffffff82e2b1c3 ffffffff813f68e6
[  861.203057] Call Trace:
[  861.206214]  [<ffffffff81b42b89>] dump_stack+0xc1/0x128
[  861.211685]  [<ffffffff813f6aa5>] panic+0x1bf/0x39f
[  861.216749]  [<ffffffff813f68e6>] ? add_taint.cold.6+0x16/0x16
[  861.222711]  [<ffffffff810022b6>] ? ___preempt_schedule+0x16/0x18
[  861.228990]  [<ffffffff81b4dc02>] ? nmi_trigger_cpumask_backtrace+0x102/0x151
[  861.236252]  [<ffffffff8131c0ee>] watchdog+0x6be/0xa20
[  861.241622]  [<ffffffff8131bb4c>] ? watchdog+0x11c/0xa20
[  861.247070]  [<ffffffff811428dd>] kthread+0x26d/0x300
[  861.252240]  [<ffffffff8131ba30>] ? reset_hung_task_detector+0x20/0x20
[  861.258886]  [<ffffffff81142670>] ? kthread_park+0xa0/0xa0
[  861.264493]  [<ffffffff82816cc4>] ? __switch_to_asm+0x34/0x70
[  861.270359]  [<ffffffff81142670>] ? kthread_park+0xa0/0xa0
[  861.276057]  [<ffffffff81142670>] ? kthread_park+0xa0/0xa0
[  861.281679]  [<ffffffff82816d5c>] ret_from_fork+0x5c/0x70
[  861.287564] Kernel Offset: disabled
[  861.291184] Rebooting in 86400 seconds..