INFO: task syz-executor.1:4354 blocked for more than 143 seconds.
      Not tainted 6.1.24-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:0     pid:4354  ppid:1      flags:0x00000009
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0xee4/0x1c98 kernel/sched/core.c:6554
 schedule+0xc4/0x170 kernel/sched/core.c:6630
 io_schedule+0x8c/0x188 kernel/sched/core.c:8774
 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1296
 folio_wait_bit+0x30/0x40 mm/filemap.c:1440
 folio_wait_writeback+0x9c/0x100 mm/page-writeback.c:3036
 wait_on_page_writeback+0x58/0x74 mm/folio-compat.c:32
 __filemap_fdatawait_range+0x1a4/0x404 mm/filemap.c:524
 filemap_fdatawait_keep_errors+0x34/0xb0 mm/filemap.c:619
 wait_sb_inodes fs/fs-writeback.c:2595 [inline]
 sync_inodes_sb+0x70c/0x944 fs/fs-writeback.c:2717
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x328 fs/super.c:474
 kill_block_super+0x70/0xdc fs/super.c:1450
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2144/0x3470 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffff800015764930 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffff800015765130 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffff800015764760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:305
2 locks held by getty/3989:
 #0: ffff0000d44fa098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80001ca102f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.1/4354:
 #0: ffff00012d82e0e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xe8/0x110 fs/super.c:362
 #1: ffff00012d82e990 (&s->s_sync_lock){+.+.}-{3:3}, at: wait_sb_inodes fs/fs-writeback.c:2534 [inline]
 #1: ffff00012d82e990 (&s->s_sync_lock){+.+.}-{3:3}, at: sync_inodes_sb+0x2a8/0x944 fs/fs-writeback.c:2717
2 locks held by kworker/u4:10/4751:

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