TITLE: INFO: rcu detected stall in __cleanup_mnt

[  396.319024] INFO: rcu_sched detected stalls on CPUs/tasks:
[  396.324708] 	(detected by 0, t=105007 jiffies, g=54385, c=54384, q=120)
[  396.331479] All QSes seen, last rcu_sched kthread activity 105014 (4295063628-4294958614), jiffies_till_next_fqs=3, root ->qsmask 0x0
[  396.343605] syz-executor5   R  running task    25224 22239   4482 0x00000008
[  396.350812] Call Trace:
[  396.353393]  <IRQ>
[  396.355560]  sched_show_task.cold.84+0x27a/0x301
[  396.386938]  print_other_cpu_stall.cold.77+0x92f/0x9d2
[  396.425896]  check_cpu_stall.isra.60+0x721/0xf70
[  396.497958]  rcu_check_callbacks+0x23f/0xcd0
[  396.575053]  update_process_times+0x2d/0x70
[  396.579598]  tick_sched_handle+0x9f/0x180
[  396.583746]  tick_sched_timer+0x45/0x130
[  396.587826]  __hrtimer_run_queues+0x3eb/0x10c0
[  396.636316]  hrtimer_interrupt+0x2f3/0x750
[  396.640571]  smp_apic_timer_interrupt+0x165/0x730
[  396.668106]  apic_timer_interrupt+0xf/0x20
[  396.672346]  </IRQ>
[  396.674589] RIP: 0010:fuse_abort_conn+0xb1f/0x1580
[  396.698893] RSP: 0018:ffff880198357618 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[  396.706602] RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc9000d4c7000
[  396.713886] RDX: 0000000000040000 RSI: ffffffff8267f418 RDI: ffff8801d7f27270
[  396.721154] RBP: ffff8801983579e0 R08: ffffed003afe4e50 R09: ffffed003afe4e4f
[  396.728422] R10: ffffed003afe4e4f R11: ffff8801d7f2727b R12: ffff8801ae944108
[  396.735689] R13: ffff880198357738 R14: ffff8801983579b8 R15: dffffc0000000000
[  396.815744]  fuse_put_super+0x123/0x440
[  396.841988]  generic_shutdown_super+0x1bf/0x530
[  396.861913]  kill_anon_super+0x3c/0x50
[  396.865801]  fuse_kill_sb_anon+0x90/0xb0
[  396.869866]  deactivate_locked_super+0x97/0x100
[  396.874546]  deactivate_super+0x193/0x1c0
[  396.882779]  cleanup_mnt+0xbf/0x160
[  396.886406]  __cleanup_mnt+0x16/0x20
[  396.890123]  task_work_run+0x1ec/0x2a0
[  396.907192]  exit_to_usermode_loop+0x313/0x370
[  396.920274]  do_syscall_64+0x6be/0x820
[  396.948792]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  396.953981] RIP: 0033:0x456cb9
[  396.976544] RSP: 002b:00007fc8f9ed9c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  396.984286] RAX: 0000000000000000 RBX: 00007fc8f9eda6d4 RCX: 0000000000456cb9
[  396.991568] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
[  396.998834] RBP: 0000000000930280 R08: 0000000000000000 R09: 0000000000000000
[  397.006100] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
[  397.013366] R13: 00000000004d6360 R14: 00000000004c9ab8 R15: 0000000000000003