INFO: task syz-executor.3:8223 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:0     pid:8223  tgid:8223  ppid:1      flags:0x0000000d
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x1498/0x24b4 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xb8/0x19c kernel/sched/core.c:6817
 schedule_timeout+0xb8/0x348 kernel/time/timer.c:2159
 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x48/0x60 kernel/sched/completion.c:148
 __flush_work+0x12c/0x1c0 kernel/workqueue.c:3410
 flush_work+0x24/0x38 kernel/workqueue.c:3431
 nilfs_segctor_destroy fs/nilfs2/segment.c:2769 [inline]
 nilfs_detach_log_writer+0x3dc/0xa48 fs/nilfs2/segment.c:2853
 nilfs_put_super+0x4c/0x130 fs/nilfs2/super.c:499
 generic_shutdown_super+0x128/0x2b8 fs/super.c:641
 kill_block_super+0x44/0x90 fs/super.c:1675
 deactivate_locked_super+0xc4/0x12c fs/super.c:472
 deactivate_super+0xe0/0x100 fs/super.c:505
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffff80008ee74ac0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:297
3 locks held by kworker/0:2/1689:
 #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2606
 #1: ffff80009b667c20 ((work_completion)(&sci->sc_iput_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2608
 #2: ffff0000d1bac610 (sb_internal#3){.+.+}-{0:0}, at: nilfs_evict_inode+0x134/0x430 fs/nilfs2/inode.c:930
1 lock held by klogd/5774:
2 locks held by getty/5929:
 #0: ffff0000d27590a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800094f722f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.3/8223:
 #0: ffff0000d1bac0e0 (&type->s_umount_key#73){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff0000d1bac0e0 (&type->s_umount_key#73){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff0000d1bac0e0 (&type->s_umount_key#73){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:504

=============================================