Warning: Permanently added '10.128.0.64' (ECDSA) to the list of known hosts.
executing program
[  302.986499][ T3984] block nbd0: shutting down sockets
[  571.397410][   T27] INFO: task syz-executor155:3984 blocked for more than 143 seconds.
[  571.399128][   T27]       Not tainted 5.15.118-syzkaller #0
[  571.400267][   T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  571.402005][   T27] task:syz-executor155 state:D stack:    0 pid: 3984 ppid:  3983 flags:0x00000009
[  571.404025][   T27] Call trace:
[  571.404758][   T27]  __switch_to+0x308/0x5e8
[  571.405646][   T27]  __schedule+0xf10/0x1e38
[  571.406589][   T27]  schedule+0x11c/0x1c8
[  571.407507][   T27]  schedule_timeout+0xb8/0x344
[  571.408469][   T27]  do_wait_for_common+0x214/0x388
[  571.409482][   T27]  wait_for_completion+0x4c/0x64
[  571.410497][   T27]  flush_workqueue+0x580/0x11c4
[  571.411485][   T27]  nbd_ioctl+0x8c8/0xc2c
[  571.412404][   T27]  blkdev_ioctl+0x3d8/0xbd0
[  571.413336][   T27]  block_ioctl+0xa8/0x114
[  571.414295][   T27]  __arm64_sys_ioctl+0x14c/0x1c8
[  571.415326][   T27]  invoke_syscall+0x98/0x2b8
[  571.416280][   T27]  el0_svc_common+0x138/0x258
[  571.417254][   T27]  do_el0_svc+0x58/0x14c
[  571.418124][   T27]  el0_svc+0x7c/0x1f0
[  571.418934][   T27]  el0t_64_sync_handler+0x84/0xe4
[  571.419936][   T27]  el0t_64_sync+0x1a0/0x1a4
[  571.420852][   T27] 
[  571.420852][   T27] Showing all locks held in the system:
[  571.422435][   T27] 1 lock held by khungtaskd/27:
[  571.423550][   T27]  #0: ffff800014ac19a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44
[  571.425458][   T27] 2 locks held by kworker/u5:0/144:
[  571.426520][   T27]  #0: ffff0000cbac4138 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8
[  571.428761][   T27]  #1: ffff80001a3b7c00 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8
[  571.431153][   T27] 2 locks held by getty/3720:
[  571.432094][   T27]  #0: ffff0000d26ea098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50
[  571.433996][   T27]  #1: ffff80001a29b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1200
[  571.436080][   T27] 
[  571.436530][   T27] =============================================
[  571.436530][   T27] 
[  571.438272][   T27] Kernel panic - not syncing: hung_task: blocked tasks
[  571.439613][   T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.118-syzkaller #0
[  571.441265][   T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
[  571.443285][   T27] Call trace:
[  571.443919][   T27]  dump_backtrace+0x0/0x530
[  571.444786][   T27]  show_stack+0x2c/0x3c
[  571.445641][   T27]  dump_stack_lvl+0x108/0x170
[  571.446549][   T27]  dump_stack+0x1c/0x58
[  571.447411][   T27]  panic+0x304/0x8b4
[  571.448219][   T27]  hung_task_panic+0x0/0x2c
[  571.449141][   T27]  kthread+0x37c/0x45c
[  571.449997][   T27]  ret_from_fork+0x10/0x20
[  571.450896][   T27] SMP: stopping secondary CPUs
[  571.451867][   T27] Kernel Offset: disabled
[  571.452776][   T27] CPU features: 0x000081c1,21302e40
[  571.453824][   T27] Memory Limit: none
[  571.797800][   T27] Rebooting in 86400 seconds..