Warning: Permanently added '10.128.1.66' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 1001.326855] INFO: task syz-executor820:8020 blocked for more than 140 seconds.
[ 1001.334264]       Not tainted 4.14.298-syzkaller #0
[ 1001.340229] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1001.348231] syz-executor820 D28648  8020   8018 0x00000004
[ 1001.353836] Call Trace:
[ 1001.356402]  __schedule+0x88b/0x1de0
[ 1001.360133]  ? lock_acquire+0x170/0x3f0
[ 1001.364098]  ? io_schedule_timeout+0x140/0x140
[ 1001.368709]  ? _raw_spin_unlock+0x29/0x40
[ 1001.372844]  ? fuse_writepage_locked+0xe80/0xe80
[ 1001.377621]  schedule+0x8d/0x1b0
[ 1001.380973]  fuse_wait_on_page_writeback.isra.0+0xdc/0x120
[ 1001.386569]  ? fuse_do_ioctl+0x1570/0x1570
[ 1001.390833]  ? end_page_writeback+0xe3/0x1c0
[ 1001.395228]  ? wait_woken+0x230/0x230
[ 1001.399062]  fuse_launder_page+0xa2/0xd0
[ 1001.403111]  invalidate_inode_pages2_range+0x547/0xc00
[ 1001.408420]  ? clear_shadow_entry+0x160/0x160
[ 1001.412902]  ? fuse_range_is_writeback+0x1f0/0x1f0
[ 1001.417847]  ? fuse_file_alloc+0x1ca/0x260
[ 1001.422073]  ? _raw_spin_unlock+0x29/0x40
[ 1001.426195]  ? fuse_do_open+0x18e/0x460
[ 1001.430199]  fuse_finish_open+0x262/0x500
[ 1001.434330]  fuse_open_common+0x234/0x290
[ 1001.438502]  do_dentry_open+0x44b/0xec0
[ 1001.442459]  ? fuse_open_common+0x290/0x290
[ 1001.446811]  ? __inode_permission+0xcd/0x2f0
[ 1001.451208]  vfs_open+0x105/0x220
[ 1001.454636]  path_openat+0x628/0x2970
[ 1001.458458]  ? path_lookupat+0x780/0x780
[ 1001.462507]  ? trace_hardirqs_on+0x10/0x10
[ 1001.466773]  do_filp_open+0x179/0x3c0
[ 1001.470563]  ? may_open_dev+0xe0/0xe0
[ 1001.474340]  ? lock_downgrade+0x740/0x740
[ 1001.478515]  ? do_raw_spin_unlock+0x164/0x220
[ 1001.483000]  ? _raw_spin_unlock+0x29/0x40
[ 1001.487165]  ? __alloc_fd+0x1be/0x490
[ 1001.490957]  do_sys_open+0x296/0x410
[ 1001.494643]  ? filp_open+0x60/0x60
[ 1001.498215]  ? do_syscall_64+0x4c/0x640
[ 1001.502174]  ? do_sys_open+0x410/0x410
[ 1001.506036]  do_syscall_64+0x1d5/0x640
[ 1001.509944]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[ 1001.515136] 
[ 1001.515136] Showing all locks held in the system:
[ 1001.521503] 1 lock held by khungtaskd/1531:
[ 1001.525893]  #0:  (tasklist_lock){.+.+}, at: [<ffffffff8702a559>] debug_show_all_locks+0x7c/0x21a
[ 1001.534973] 2 locks held by syz-executor820/8020:
[ 1001.539846]  #0:  (sb_writers#10){.+.+}, at: [<ffffffff818e1bca>] mnt_want_write+0x3a/0xb0
[ 1001.548289]  #1:  (&sb->s_type->i_mutex_key#17){+.+.}, at: [<ffffffff822f7664>] fuse_open_common+0x1a4/0x290
[ 1001.558308] 
[ 1001.559914] =============================================
[ 1001.559914] 
[ 1001.566947] NMI backtrace for cpu 1
[ 1001.570557] CPU: 1 PID: 1531 Comm: khungtaskd Not tainted 4.14.298-syzkaller #0
[ 1001.577978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 1001.587311] Call Trace:
[ 1001.589878]  dump_stack+0x1b2/0x281
[ 1001.593482]  nmi_cpu_backtrace.cold+0x57/0x93
[ 1001.597953]  ? irq_force_complete_move+0x350/0x350
[ 1001.602855]  nmi_trigger_cpumask_backtrace+0x13a/0x180
[ 1001.608107]  watchdog+0x5b9/0xb40
[ 1001.611534]  ? hungtask_pm_notify+0x50/0x50
[ 1001.615828]  kthread+0x30d/0x420
[ 1001.619166]  ? kthread_create_on_node+0xd0/0xd0
[ 1001.623806]  ret_from_fork+0x24/0x30
[ 1001.627562] Sending NMI from CPU 1 to CPUs 0:
[ 1001.632091] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8724adce
[ 1001.633058] Kernel panic - not syncing: hung_task: blocked tasks
[ 1001.645416] CPU: 1 PID: 1531 Comm: khungtaskd Not tainted 4.14.298-syzkaller #0
[ 1001.652834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 1001.662160] Call Trace:
[ 1001.664726]  dump_stack+0x1b2/0x281
[ 1001.668328]  panic+0x1f9/0x42d
[ 1001.671496]  ? add_taint.cold+0x16/0x16
[ 1001.675446]  watchdog+0x5ca/0xb40
[ 1001.678873]  ? hungtask_pm_notify+0x50/0x50
[ 1001.683168]  kthread+0x30d/0x420
[ 1001.686510]  ? kthread_create_on_node+0xd0/0xd0
[ 1001.691153]  ret_from_fork+0x24/0x30
[ 1001.695100] Kernel Offset: disabled
[ 1001.698708] Rebooting in 86400 seconds..