Warning: Permanently added '10.128.1.70' (ED25519) to the list of known hosts.
executing program
[  300.706028][ T3989] block nbd0: shutting down sockets
[  571.407000][   T27] INFO: task syz-executor981:3989 blocked for more than 143 seconds.
[  571.409190][   T27]       Not tainted 5.15.156-syzkaller #0
[  571.410610][   T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  571.412751][   T27] task:syz-executor981 state:D stack:    0 pid: 3989 ppid:  3988 flags:0x0000000d
[  571.415169][   T27] Call trace:
[  571.415987][   T27]  __switch_to+0x308/0x5e8
[  571.417216][   T27]  __schedule+0xf10/0x1e48
[  571.418344][   T27]  schedule+0x11c/0x1c8
[  571.419445][   T27]  schedule_timeout+0xb8/0x344
[  571.420648][   T27]  do_wait_for_common+0x214/0x388
[  571.421950][   T27]  wait_for_completion+0x4c/0x64
[  571.423164][   T27]  flush_workqueue+0x580/0x11c4
[  571.424403][   T27]  nbd_ioctl+0x8c8/0xc2c
[  571.425471][   T27]  blkdev_ioctl+0x3d8/0xbd0
[  571.426589][   T27]  block_ioctl+0xa8/0x114
[  571.427773][   T27]  __arm64_sys_ioctl+0x14c/0x1c8
[  571.428997][   T27]  invoke_syscall+0x98/0x2b8
[  571.430133][   T27]  el0_svc_common+0x138/0x258
[  571.431332][   T27]  do_el0_svc+0x58/0x14c
[  571.432404][   T27]  el0_svc+0x7c/0x1f0
[  571.433377][   T27]  el0t_64_sync_handler+0x84/0xe4
[  571.434664][   T27]  el0t_64_sync+0x1a0/0x1a4
[  571.435807][   T27] 
[  571.435807][   T27] Showing all locks held in the system:
[  571.437833][   T27] 1 lock held by khungtaskd/27:
[  571.439073][   T27]  #0: ffff800014b114e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44
[  571.441551][   T27] 2 locks held by kworker/u5:0/144:
[  571.442893][   T27]  #0: ffff0000cc1da938 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8
[  571.445677][   T27]  #1: ffff80001a437c00 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8
[  571.448651][   T27] 2 locks held by getty/3724:
[  571.449890][   T27]  #0: ffff0000d3d09098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50
[  571.452335][   T27]  #1: ffff800018e132e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204
[  571.454945][   T27] 
[  571.455599][   T27] =============================================
[  571.455599][   T27] 
[  571.457798][   T27] Kernel panic - not syncing: hung_task: blocked tasks
[  571.459472][   T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.156-syzkaller #0
[  571.461473][   T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[  571.463968][   T27] Call trace:
[  571.464794][   T27]  dump_backtrace+0x0/0x530
[  571.465899][   T27]  show_stack+0x2c/0x3c
[  571.466917][   T27]  dump_stack_lvl+0x108/0x170
[  571.468134][   T27]  dump_stack+0x1c/0x58
[  571.469203][   T27]  panic+0x304/0x8bc
[  571.470151][   T27]  hung_task_panic+0x0/0x2c
[  571.471339][   T27]  kthread+0x37c/0x45c
[  571.472374][   T27]  ret_from_fork+0x10/0x20
[  571.473566][   T27] SMP: stopping secondary CPUs
[  571.474880][   T27] Kernel Offset: disabled
[  571.476003][   T27] CPU features: 0x0,000081c1,21302e40
[  571.477420][   T27] Memory Limit: none
[  571.837071][   T27] Rebooting in 86400 seconds..