Warning: Permanently added '10.128.1.166' (ED25519) to the list of known hosts.
executing program
[  301.274089][ T3989] block nbd0: shutting down sockets
[  571.399039][   T27] INFO: task syz-executor107:3989 blocked for more than 143 seconds.
[  571.400973][   T27]       Not tainted 5.15.156-syzkaller #0
[  571.402252][   T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  571.404183][   T27] task:syz-executor107 state:D stack:    0 pid: 3989 ppid:  3988 flags:0x0000000d
[  571.406320][   T27] Call trace:
[  571.407026][   T27]  __switch_to+0x308/0x5e8
[  571.408044][   T27]  __schedule+0xf10/0x1e48
[  571.409097][   T27]  schedule+0x11c/0x1c8
[  571.410049][   T27]  schedule_timeout+0xb8/0x344
[  571.411112][   T27]  do_wait_for_common+0x214/0x388
[  571.412218][   T27]  wait_for_completion+0x4c/0x64
[  571.413336][   T27]  flush_workqueue+0x580/0x11c4
[  571.414465][   T27]  nbd_ioctl+0x8c8/0xc2c
[  571.415456][   T27]  blkdev_ioctl+0x3d8/0xbd0
[  571.416509][   T27]  block_ioctl+0xa8/0x114
[  571.417524][   T27]  __arm64_sys_ioctl+0x14c/0x1c8
[  571.418673][   T27]  invoke_syscall+0x98/0x2b8
[  571.419791][   T27]  el0_svc_common+0x138/0x258
[  571.420806][   T27]  do_el0_svc+0x58/0x14c
[  571.421708][   T27]  el0_svc+0x7c/0x1f0
[  571.422641][   T27]  el0t_64_sync_handler+0x84/0xe4
[  571.423801][   T27]  el0t_64_sync+0x1a0/0x1a4
[  571.424884][   T27] 
[  571.424884][   T27] Showing all locks held in the system:
[  571.426628][   T27] 1 lock held by khungtaskd/27:
[  571.427705][   T27]  #0: ffff800014b114e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44
[  571.429981][   T27] 2 locks held by kworker/u5:0/145:
[  571.431139][   T27]  #0: ffff0000cbea4138 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8
[  571.433534][   T27]  #1: ffff80001a437c00 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8
[  571.436258][   T27] 2 locks held by getty/3718:
[  571.437352][   T27]  #0: ffff0000d2def098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50
[  571.439582][   T27]  #1: ffff800018e132e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204
[  571.441929][   T27] 
[  571.442457][   T27] =============================================
[  571.442457][   T27] 
[  571.444412][   T27] Kernel panic - not syncing: hung_task: blocked tasks
[  571.445958][   T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.156-syzkaller #0
[  571.447704][   T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[  571.450043][   T27] Call trace:
[  571.450763][   T27]  dump_backtrace+0x0/0x530
[  571.451805][   T27]  show_stack+0x2c/0x3c
[  571.452788][   T27]  dump_stack_lvl+0x108/0x170
[  571.453958][   T27]  dump_stack+0x1c/0x58
[  571.454958][   T27]  panic+0x304/0x8bc
[  571.455862][   T27]  hung_task_panic+0x0/0x2c
[  571.456898][   T27]  kthread+0x37c/0x45c
[  571.457833][   T27]  ret_from_fork+0x10/0x20
[  571.458825][   T27] SMP: stopping secondary CPUs
[  571.459934][   T27] Kernel Offset: disabled
[  571.460950][   T27] CPU features: 0x0,000081c1,21302e40
[  571.462136][   T27] Memory Limit: none
[  571.800013][   T27] Rebooting in 86400 seconds..