INFO: task syz-executor.3:6033 blocked for more than 143 seconds.
      Not tainted 6.5.0-rc7-syzkaller-gfe4469582053 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:0     pid:6033  ppid:1      flags:0x0000000d
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1364/0x23b4 kernel/sched/core.c:6710
 schedule+0xc4/0x170 kernel/sched/core.c:6786
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6845
 rwsem_down_write_slowpath+0xcfc/0x1aa0 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0xb4/0xc0 kernel/locking/rwsem.c:1574
 deactivate_super+0xd8/0x100 fs/super.c:360
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261
 task_work_run+0x230/0x2e0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1305
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
 #0: ffff80008e2718d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
 #0: ffff80008e271c90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
 #0: ffff80008e271700 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:302
2 locks held by getty/5747:
 #0: ffff0000c1925098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff8000959122f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2187
1 lock held by syz-executor.3/6033:
 #0: ffff0000cebae0e0 (&type->s_umount_key#71){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:360
2 locks held by kworker/u4:6/6131:
3 locks held by syz-executor.5/9021:
1 lock held by syz-executor.5/9106:
 #0: ffff0000cebae0e0 (&type->s_umount_key#71){++++}-{3:3}, at: iterate_supers+0xb0/0x1dc fs/super.c:742

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