Warning: Permanently added '10.128.1.73' (ECDSA) to the list of known hosts.
executing program
[ 1001.350375] INFO: task syz-executor394:7962 blocked for more than 140 seconds.
[ 1001.357823]       Not tainted 4.14.300-syzkaller #0
[ 1001.364190] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1001.372509] syz-executor394 D28696  7962   7960 0x00000004
[ 1001.378137] Call Trace:
[ 1001.381334]  __schedule+0x88b/0x1de0
[ 1001.385032]  ? lock_acquire+0x170/0x3f0
[ 1001.388980]  ? io_schedule_timeout+0x140/0x140
[ 1001.394318]  ? _raw_spin_unlock+0x29/0x40
[ 1001.398475]  ? fuse_writepage_locked+0xe80/0xe80
[ 1001.403801]  schedule+0x8d/0x1b0
[ 1001.407154]  fuse_wait_on_page_writeback.isra.0+0xdc/0x120
[ 1001.413710]  ? fuse_do_ioctl+0x1570/0x1570
[ 1001.417930]  ? end_page_writeback+0xe3/0x1c0
[ 1001.423161]  ? wait_woken+0x230/0x230
[ 1001.426954]  fuse_launder_page+0xa2/0xd0
[ 1001.431582]  invalidate_inode_pages2_range+0x547/0xc00
[ 1001.436850]  ? clear_shadow_entry+0x160/0x160
[ 1001.441870]  ? fuse_range_is_writeback+0x1f0/0x1f0
[ 1001.446799]  ? fuse_file_alloc+0x1ca/0x260
[ 1001.451541]  ? _raw_spin_unlock+0x29/0x40
[ 1001.455670]  ? fuse_do_open+0x18e/0x460
[ 1001.459619]  fuse_finish_open+0x262/0x500
[ 1001.464522]  fuse_open_common+0x234/0x290
[ 1001.468655]  do_dentry_open+0x44b/0xec0
[ 1001.473146]  ? fuse_open_common+0x290/0x290
[ 1001.477456]  ? __inode_permission+0xcd/0x2f0
[ 1001.482601]  vfs_open+0x105/0x220
[ 1001.486052]  path_openat+0x628/0x2970
[ 1001.489829]  ? path_lookupat+0x780/0x780
[ 1001.494605]  ? trace_hardirqs_on+0x10/0x10
[ 1001.498827]  do_filp_open+0x179/0x3c0
[ 1001.503245]  ? may_open_dev+0xe0/0xe0
[ 1001.507034]  ? lock_downgrade+0x740/0x740
[ 1001.511883]  ? do_raw_spin_unlock+0x164/0x220
[ 1001.516365]  ? _raw_spin_unlock+0x29/0x40
[ 1001.521234]  ? __alloc_fd+0x1be/0x490
[ 1001.525046]  do_sys_open+0x296/0x410
[ 1001.528736]  ? filp_open+0x60/0x60
[ 1001.533089]  ? do_syscall_64+0x4c/0x640
[ 1001.537043]  ? do_sys_open+0x410/0x410
[ 1001.541723]  do_syscall_64+0x1d5/0x640
[ 1001.545596]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[ 1001.551311] 
[ 1001.551311] Showing all locks held in the system:
[ 1001.557619] 1 lock held by khungtaskd/1533:
[ 1001.562020]  #0:  (tasklist_lock){.+.+}, at: [<ffffffff87029eb9>] debug_show_all_locks+0x7c/0x21a
[ 1001.571115] 1 lock held by in:imklog/7681:
[ 1001.575326]  #0:  (&f->f_pos_lock){+.+.}, at: [<ffffffff818d8b5b>] __fdget_pos+0x1fb/0x2b0
[ 1001.583822] 2 locks held by syz-executor394/7962:
[ 1001.588644]  #0:  (sb_writers#10){.+.+}, at: [<ffffffff818e1bca>] mnt_want_write+0x3a/0xb0
[ 1001.597102]  #1:  (&sb->s_type->i_mutex_key#17){+.+.}, at: [<ffffffff822f7704>] fuse_open_common+0x1a4/0x290
[ 1001.607172] 
[ 1001.608776] =============================================
[ 1001.608776] 
[ 1001.616175] NMI backtrace for cpu 1
[ 1001.619791] CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.300-syzkaller #0
[ 1001.627207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 1001.636534] Call Trace:
[ 1001.639115]  dump_stack+0x1b2/0x281
[ 1001.642719]  nmi_cpu_backtrace.cold+0x57/0x93
[ 1001.647188]  ? irq_force_complete_move+0x350/0x350
[ 1001.652093]  nmi_trigger_cpumask_backtrace+0x13a/0x180
[ 1001.657351]  watchdog+0x5b9/0xb40
[ 1001.660784]  ? hungtask_pm_notify+0x50/0x50
[ 1001.665082]  kthread+0x30d/0x420
[ 1001.668427]  ? kthread_create_on_node+0xd0/0xd0
[ 1001.673176]  ret_from_fork+0x24/0x30
[ 1001.677008] Sending NMI from CPU 1 to CPUs 0:
[ 1001.681579] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8724a73e
[ 1001.683112] Kernel panic - not syncing: hung_task: blocked tasks
[ 1001.694892] CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.300-syzkaller #0
[ 1001.702308] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 1001.711633] Call Trace:
[ 1001.714197]  dump_stack+0x1b2/0x281
[ 1001.717798]  panic+0x1f9/0x42d
[ 1001.720962]  ? add_taint.cold+0x16/0x16
[ 1001.724914]  watchdog+0x5ca/0xb40
[ 1001.728339]  ? hungtask_pm_notify+0x50/0x50
[ 1001.732634]  kthread+0x30d/0x420
[ 1001.735970]  ? kthread_create_on_node+0xd0/0xd0
[ 1001.740609]  ret_from_fork+0x24/0x30
[ 1001.744552] Kernel Offset: disabled
[ 1001.748160] Rebooting in 86400 seconds..