Warning: Permanently added '10.128.0.90' (ECDSA) to the list of known hosts.
executing program
[ 1001.335771] INFO: task syz-executor208:8019 blocked for more than 140 seconds.
[ 1001.343202]       Not tainted 4.14.300-syzkaller #0
[ 1001.349497] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1001.357864] syz-executor208 D28464  8019   8017 0x00000004
[ 1001.363485] Call Trace:
[ 1001.366620]  __schedule+0x88b/0x1de0
[ 1001.370324]  ? lock_acquire+0x170/0x3f0
[ 1001.374281]  ? io_schedule_timeout+0x140/0x140
[ 1001.379622]  ? _raw_spin_unlock+0x29/0x40
[ 1001.383764]  ? fuse_writepage_locked+0xe80/0xe80
[ 1001.389386]  schedule+0x8d/0x1b0
[ 1001.392741]  fuse_wait_on_page_writeback.isra.0+0xdc/0x120
[ 1001.398996]  ? fuse_do_ioctl+0x1570/0x1570
[ 1001.403220]  ? end_page_writeback+0xe3/0x1c0
[ 1001.408210]  ? wait_woken+0x230/0x230
[ 1001.412002]  fuse_launder_page+0xa2/0xd0
[ 1001.416603]  invalidate_inode_pages2_range+0x547/0xc00
[ 1001.421875]  ? clear_shadow_entry+0x160/0x160
[ 1001.426909]  ? fuse_range_is_writeback+0x1f0/0x1f0
[ 1001.431822]  ? fuse_file_alloc+0x1ca/0x260
[ 1001.436576]  ? _raw_spin_unlock+0x29/0x40
[ 1001.440715]  ? fuse_do_open+0x18e/0x460
[ 1001.444665]  fuse_finish_open+0x262/0x500
[ 1001.449523]  fuse_open_common+0x234/0x290
[ 1001.453662]  do_dentry_open+0x44b/0xec0
[ 1001.458191]  ? fuse_open_common+0x290/0x290
[ 1001.462501]  ? __inode_permission+0xcd/0x2f0
[ 1001.467580]  vfs_open+0x105/0x220
[ 1001.471016]  path_openat+0x628/0x2970
[ 1001.474797]  ? path_lookupat+0x780/0x780
[ 1001.479581]  ? trace_hardirqs_on+0x10/0x10
[ 1001.483807]  do_filp_open+0x179/0x3c0
[ 1001.488864]  ? may_open_dev+0xe0/0xe0
[ 1001.492661]  ? lock_downgrade+0x740/0x740
[ 1001.497367]  ? do_raw_spin_unlock+0x164/0x220
[ 1001.501851]  ? _raw_spin_unlock+0x29/0x40
[ 1001.506562]  ? __alloc_fd+0x1be/0x490
[ 1001.510355]  do_sys_open+0x296/0x410
[ 1001.514045]  ? filp_open+0x60/0x60
[ 1001.518632]  ? do_syscall_64+0x4c/0x640
[ 1001.522593]  ? compat_SyS_openat+0x30/0x30
[ 1001.527409]  do_syscall_64+0x1d5/0x640
[ 1001.531284]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[ 1001.537040] 
[ 1001.537040] Showing all locks held in the system:
[ 1001.543354] 1 lock held by khungtaskd/1531:
[ 1001.547777]  #0:  (tasklist_lock){.+.+}, at: [<ffffffff87029eb9>] debug_show_all_locks+0x7c/0x21a
[ 1001.556898] 1 lock held by in:imklog/7734:
[ 1001.561113]  #0:  (&f->f_pos_lock){+.+.}, at: [<ffffffff818d8b5b>] __fdget_pos+0x1fb/0x2b0
[ 1001.569611] 2 locks held by syz-executor208/8019:
[ 1001.574438]  #0:  (sb_writers#10){.+.+}, at: [<ffffffff818e1bca>] mnt_want_write+0x3a/0xb0
[ 1001.582907]  #1:  (&sb->s_type->i_mutex_key#17){+.+.}, at: [<ffffffff822f7704>] fuse_open_common+0x1a4/0x290
[ 1001.592997] 
[ 1001.594605] =============================================
[ 1001.594605] 
[ 1001.602002] NMI backtrace for cpu 0
[ 1001.605686] CPU: 0 PID: 1531 Comm: khungtaskd Not tainted 4.14.300-syzkaller #0
[ 1001.613119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 1001.622445] Call Trace:
[ 1001.625011]  dump_stack+0x1b2/0x281
[ 1001.628615]  nmi_cpu_backtrace.cold+0x57/0x93
[ 1001.633084]  ? irq_force_complete_move+0x350/0x350
[ 1001.637989]  nmi_trigger_cpumask_backtrace+0x13a/0x180
[ 1001.643262]  watchdog+0x5b9/0xb40
[ 1001.646689]  ? hungtask_pm_notify+0x50/0x50
[ 1001.650987]  kthread+0x30d/0x420
[ 1001.654325]  ? kthread_create_on_node+0xd0/0xd0
[ 1001.658981]  ret_from_fork+0x24/0x30
[ 1001.662754] Sending NMI from CPU 0 to CPUs 1:
[ 1001.667319] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff8724a73e
[ 1001.668796] Kernel panic - not syncing: hung_task: blocked tasks
[ 1001.680651] CPU: 0 PID: 1531 Comm: khungtaskd Not tainted 4.14.300-syzkaller #0
[ 1001.688072] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 1001.697401] Call Trace:
[ 1001.699977]  dump_stack+0x1b2/0x281
[ 1001.703579]  panic+0x1f9/0x42d
[ 1001.706746]  ? add_taint.cold+0x16/0x16
[ 1001.710702]  watchdog+0x5ca/0xb40
[ 1001.714131]  ? hungtask_pm_notify+0x50/0x50
[ 1001.718427]  kthread+0x30d/0x420
[ 1001.721795]  ? kthread_create_on_node+0xd0/0xd0
[ 1001.726474]  ret_from_fork+0x24/0x30
[ 1001.730449] Kernel Offset: disabled
[ 1001.734059] Rebooting in 86400 seconds..