Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [  616.335808][ T1170] INFO: task syz-executor082:6836 blocked for more than 143 seconds.
[  616.344141][ T1170]       Not tainted 5.8.0-syzkaller #0
[  616.349937][ T1170] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  616.358675][ T1170] syz-executor082 D28096  6836   6830 0x80004002
[  616.365054][ T1170] Call Trace:
[  616.368495][ T1170]  __schedule+0x8e5/0x21e0
[  616.372917][ T1170]  ? io_schedule_timeout+0x140/0x140
[  616.378316][ T1170]  ? io_wq_cancel_all+0x5a0/0x5a0
[  616.383392][ T1170]  ? _raw_spin_unlock_irq+0x1f/0x80
[  616.388810][ T1170]  schedule+0xd0/0x2a0
[  616.392919][ T1170]  io_uring_flush+0x740/0xa90
[  616.397646][ T1170]  ? io_req_task_cancel+0x20/0x20
[  616.402748][ T1170]  ? add_wait_queue_exclusive+0x180/0x180
[  616.408548][ T1170]  ? find_held_lock+0x2d/0x110
[  616.413327][ T1170]  ? lock_is_held_type+0xbb/0xf0
[  616.418301][ T1170]  ? io_req_task_cancel+0x20/0x20
[  616.423361][ T1170]  filp_close+0xb4/0x170
[  616.427667][ T1170]  put_files_struct+0x1cc/0x350
[  616.432545][ T1170]  exit_files+0x7e/0xa0
[  616.436846][ T1170]  do_exit+0xb43/0x29f0
[  616.441007][ T1170]  ? mm_update_next_owner+0x7a0/0x7a0
[  616.446435][ T1170]  ? io_submit_sqes+0x2380/0x2380
[  616.451537][ T1170]  ? __sys_socket+0x16d/0x200
[  616.456251][ T1170]  ? lock_is_held_type+0xbb/0xf0
[  616.461196][ T1170]  do_group_exit+0x125/0x310
[  616.465840][ T1170]  __x64_sys_exit_group+0x3a/0x50
[  616.470861][ T1170]  do_syscall_64+0x2d/0x70
[  616.475273][ T1170]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  616.481224][ T1170] RIP: 0033:0x43f388
[  616.485110][ T1170] Code: Bad RIP value.
[  616.489276][ T1170] RSP: 002b:00007fff10962308 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[  616.497782][ T1170] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f388
[  616.505949][ T1170] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
[  616.514486][ T1170] RBP: 00000000004beb88 R08: 00000000000000e7 R09: ffffffffffffffd0
[  616.522509][ T1170] R10: 0000000000400b1b R11: 0000000000000246 R12: 0000000000000001
[  616.530548][ T1170] R13: 00000000006d01a0 R14: 0000000000000000 R15: 0000000000000000
[  616.538684][ T1170] 
[  616.538684][ T1170] Showing all locks held in the system:
[  616.546480][ T1170] 1 lock held by khungtaskd/1170:
[  616.551638][ T1170]  #0: ffffffff89bd62c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[  616.561519][ T1170] 1 lock held by in:imklog/6520:
[  616.566515][ T1170]  #0: ffff8880a2048af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[  616.575758][ T1170] 
[  616.578078][ T1170] =============================================
[  616.578078][ T1170] 
[  616.586540][ T1170] NMI backtrace for cpu 0
[  616.590926][ T1170] CPU: 0 PID: 1170 Comm: khungtaskd Not tainted 5.8.0-syzkaller #0
[  616.598788][ T1170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  616.608821][ T1170] Call Trace:
[  616.612168][ T1170]  dump_stack+0x18f/0x20d
[  616.616822][ T1170]  nmi_cpu_backtrace.cold+0x70/0xb1
[  616.622028][ T1170]  ? lapic_can_unplug_cpu.cold+0x38/0x38
[  616.627636][ T1170]  nmi_trigger_cpumask_backtrace+0x1b3/0x223
[  616.633630][ T1170]  watchdog+0xd7d/0x1000
[  616.637853][ T1170]  ? reset_hung_task_detector+0x30/0x30
[  616.643403][ T1170]  kthread+0x3b5/0x4a0
[  616.647447][ T1170]  ? __kthread_bind_mask+0xc0/0xc0
[  616.652552][ T1170]  ? __kthread_bind_mask+0xc0/0xc0
[  616.657665][ T1170]  ret_from_fork+0x1f/0x30
[  616.662220][ T1170] Sending NMI from CPU 0 to CPUs 1:
[  616.667517][    C1] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10
[  616.668479][ T1170] Kernel panic - not syncing: hung_task: blocked tasks
[  616.682606][ T1170] CPU: 0 PID: 1170 Comm: khungtaskd Not tainted 5.8.0-syzkaller #0
[  616.690490][ T1170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  616.700516][ T1170] Call Trace:
[  616.703784][ T1170]  dump_stack+0x18f/0x20d
[  616.708116][ T1170]  panic+0x2e3/0x75c
[  616.711985][ T1170]  ? __warn_printk+0xf3/0xf3
[  616.717052][ T1170]  ? lapic_can_unplug_cpu.cold+0x38/0x38
[  616.722766][ T1170]  ? preempt_schedule_thunk+0x16/0x18
[  616.728113][ T1170]  ? watchdog.cold+0x5/0x16b
[  616.732673][ T1170]  ? watchdog+0xa82/0x1000
[  616.737086][ T1170]  watchdog.cold+0x16/0x16b
[  616.741564][ T1170]  ? reset_hung_task_detector+0x30/0x30
[  616.747083][ T1170]  kthread+0x3b5/0x4a0
[  616.751123][ T1170]  ? __kthread_bind_mask+0xc0/0xc0
[  616.756206][ T1170]  ? __kthread_bind_mask+0xc0/0xc0
[  616.761306][ T1170]  ret_from_fork+0x1f/0x30
[  616.767304][ T1170] Kernel Offset: disabled
[  616.771627][ T1170] Rebooting in 86400 seconds..