Warning: Permanently added '10.128.0.83' (ECDSA) to the list of known hosts.
executing program
[  499.222128][ T3066] nbd0: detected capacity change from 0 to 14
[  504.191919][ T3066] block nbd0: shutting down sockets
[  529.771333][   T50] block nbd0: Possible stuck request 000000006bb7f4ef: control (read@0,4096B). Runtime 30 seconds
[  559.288195][ T2561] udevd[2561]: worker [3068] /devices/virtual/block/nbd0 is taking a long time
[  559.851294][   T50] block nbd0: Possible stuck request 000000006bb7f4ef: control (read@0,4096B). Runtime 60 seconds
[  589.931297][   T50] block nbd0: Possible stuck request 000000006bb7f4ef: control (read@0,4096B). Runtime 90 seconds
[  620.011326][   T50] block nbd0: Possible stuck request 000000006bb7f4ef: control (read@0,4096B). Runtime 120 seconds
[  650.091351][   T50] block nbd0: Possible stuck request 000000006bb7f4ef: control (read@0,4096B). Runtime 150 seconds
[  679.421790][ T2561] udevd[2561]: worker [3068] /devices/virtual/block/nbd0 timeout; kill it
[  679.424029][ T2561] udevd[2561]: seq 6710 '/devices/virtual/block/nbd0' killed
[  680.171259][   T50] block nbd0: Possible stuck request 000000006bb7f4ef: control (read@0,4096B). Runtime 180 seconds
[  710.251320][   T50] block nbd0: Possible stuck request 000000006bb7f4ef: control (read@0,4096B). Runtime 210 seconds
[  714.731327][   T27] INFO: task syz-executor902:3066 blocked for more than 143 seconds.
[  714.733246][   T27]       Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
[  714.734894][   T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  714.736622][   T27] task:syz-executor902 state:D stack:    0 pid: 3066 ppid:  3065 flags:0x0000000d
[  714.738435][   T27] Call trace:
[  714.739089][   T27]  __switch_to+0x180/0x298
[  714.739979][   T27]  __schedule+0x414/0x5a0
[  714.740972][   T27]  schedule+0x64/0xa4
[  714.742015][   T27]  schedule_preempt_disabled+0x18/0x2c
[  714.743309][   T27]  __mutex_lock_common+0x788/0xca8
[  714.744405][   T27]  mutex_lock_nested+0x38/0x44
[  714.745422][   T27]  blkdev_put+0x78/0x284
[  714.746318][   T27]  blkdev_close+0x24/0x38
[  714.747208][   T27]  __fput+0x198/0x3dc
[  714.748051][   T27]  ____fput+0x20/0x30
[  714.748867][   T27]  task_work_run+0xc4/0x14c
[  714.749854][   T27]  do_exit+0x26c/0xbe0
[  714.750787][   T27]  do_group_exit+0x70/0xe8
[  714.751848][   T27]  get_signal+0xb0c/0xb40
[  714.752800][   T27]  do_signal+0x128/0x438
[  714.753838][   T27]  do_notify_resume+0xc0/0x1f0
[  714.754952][   T27]  el0_svc+0x9c/0x150
[  714.755845][   T27]  el0t_64_sync_handler+0x84/0xf0
[  714.757006][   T27]  el0t_64_sync+0x18c/0x190
[  714.757961][   T27] 
[  714.757961][   T27] Showing all locks held in the system:
[  714.759728][   T27] 1 lock held by rcu_tasks_kthre/11:
[  714.760877][   T27]  #0: ffff80000d433568 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450
[  714.763389][   T27] 1 lock held by rcu_tasks_trace/12:
[  714.764628][   T27]  #0: ffff80000d433bb8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450
[  714.767211][   T27] 1 lock held by khungtaskd/27:
[  714.768283][   T27]  #0: ffff80000d433440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48
[  714.770420][   T27] 2 locks held by getty/2721:
[  714.771496][   T27]  #0: ffff0000c73b6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58
[  714.773728][   T27]  #1: ffff80000f61e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c
[  714.775829][   T27] 1 lock held by syz-executor902/3066:
[  714.777036][   T27]  #0: ffff0000c4b6dcc8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x78/0x284
[  714.779216][   T27] 1 lock held by udevd/3068:
[  714.780251][   T27]  #0: ffff0000c4b6dcc8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc
[  714.782627][   T27] 
[  714.783189][   T27] =============================================
[  714.783189][   T27] 
[  714.785128][   T27] Kernel panic - not syncing: hung_task: blocked tasks
[  714.786588][   T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
[  714.788784][   T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
[  714.791157][   T27] Call trace:
[  714.791942][   T27]  dump_backtrace+0x1c4/0x1f0
[  714.792986][   T27]  show_stack+0x2c/0x54
[  714.793985][   T27]  dump_stack_lvl+0x104/0x16c
[  714.795028][   T27]  dump_stack+0x1c/0x58
[  714.796010][   T27]  panic+0x218/0x50c
[  714.796865][   T27]  hung_task_panic+0x0/0x2c
[  714.797869][   T27]  kthread+0x12c/0x158
[  714.798783][   T27]  ret_from_fork+0x10/0x20
[  714.799878][   T27] SMP: stopping secondary CPUs
[  714.800952][   T27] Kernel Offset: disabled
[  714.801943][   T27] CPU features: 0x00000,02070084,26017203
[  714.803269][   T27] Memory Limit: none
[  714.957382][   T27] Rebooting in 86400 seconds..