Warning: Permanently added '10.128.0.64' (ECDSA) to the list of known hosts.
executing program
[  325.247787][ T5994] block nbd0: shutting down sockets
[  571.375968][   T29] INFO: task syz-executor384:5994 blocked for more than 143 seconds.
[  571.377751][   T29]       Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0
[  571.379187][   T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  571.380998][   T29] task:syz-executor384 state:D stack:0     pid:5994  ppid:5993   flags:0x00000009
[  571.382955][   T29] Call trace:
[  571.383697][   T29]  __switch_to+0x320/0x754
[  571.384641][   T29]  __schedule+0x1368/0x23b8
[  571.385610][   T29]  schedule+0xc4/0x170
[  571.386651][   T29]  schedule_timeout+0xb8/0x348
[  571.387687][   T29]  do_wait_for_common+0x30c/0x468
[  571.388751][   T29]  wait_for_completion+0x48/0x60
[  571.389810][   T29]  __flush_workqueue+0x580/0x11c4
[  571.390905][   T29]  nbd_ioctl+0x8dc/0xc40
[  571.391807][   T29]  blkdev_ioctl+0x408/0xb40
[  571.392725][   T29]  __arm64_sys_ioctl+0x14c/0x1c8
[  571.393728][   T29]  invoke_syscall+0x98/0x2c0
[  571.394696][   T29]  el0_svc_common+0x138/0x244
[  571.395785][   T29]  do_el0_svc+0x64/0x198
[  571.396676][   T29]  el0_svc+0x4c/0x160
[  571.397515][   T29]  el0t_64_sync_handler+0x84/0xfc
[  571.398549][   T29]  el0t_64_sync+0x190/0x194
[  571.399471][   T29] 
[  571.399471][   T29] Showing all locks held in the system:
[  571.401087][   T29] 1 lock held by rcu_tasks_kthre/13:
[  571.402180][   T29]  #0: ffff80008e0916d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4
[  571.404398][   T29] 1 lock held by rcu_tasks_trace/14:
[  571.405511][   T29]  #0: ffff80008e091a90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4
[  571.407945][   T29] 1 lock held by khungtaskd/29:
[  571.408937][   T29]  #0: ffff80008e091500 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44
[  571.410931][   T29] 2 locks held by kworker/u5:1/5548:
[  571.412043][   T29]  #0: ffff0000ccce0938 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4
[  571.414253][   T29]  #1: ffff800098687c20 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4
[  571.416673][   T29] 2 locks held by getty/5729:
[  571.417652][   T29]  #0: ffff0000cf3fb098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c
[  571.419647][   T29]  #1: ffff800092e002f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210
[  571.421741][   T29] 
[  571.422263][   T29] =============================================
[  571.422263][   T29] 
[  571.423990][   T29] Kernel panic - not syncing: hung_task: blocked tasks
[  571.425424][   T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0
[  571.427389][   T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
[  571.429566][   T29] Call trace:
[  571.430249][   T29]  dump_backtrace+0x1b8/0x1e4
[  571.431210][   T29]  show_stack+0x2c/0x44
[  571.432086][   T29]  dump_stack_lvl+0xd0/0x124
[  571.433073][   T29]  dump_stack+0x1c/0x28
[  571.433991][   T29]  panic+0x2d0/0x7b4
[  571.434872][   T29]  hung_task_panic+0x0/0x2c
[  571.435865][   T29]  kthread+0x288/0x310
[  571.436766][   T29]  ret_from_fork+0x10/0x20
[  571.437761][   T29] SMP: stopping secondary CPUs
[  571.438803][   T29] Kernel Offset: disabled
[  571.439777][   T29] CPU features: 0x0000004,0e008010,c4017203
[  571.441093][   T29] Memory Limit: none
[  571.763490][   T29] Rebooting in 86400 seconds..