INFO: task syz-executor316:4471 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor316 state:D stack:0     pid:4471  ppid:4469   flags:0x00000000
Call trace:
 __switch_to+0x210/0x424 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0x6a4/0xb34 kernel/sched/core.c:6606
 schedule+0x64/0xa4 kernel/sched/core.c:6682
 wb_wait_for_completion+0x9c/0x12c fs/fs-writeback.c:192
 sync_inodes_sb+0xc4/0x4c4 fs/fs-writeback.c:2725
 sync_filesystem+0xc8/0x134 fs/sync.c:64
 generic_shutdown_super+0x38/0x198 fs/super.c:474
 kill_block_super+0x30/0x78 fs/super.c:1386
 deactivate_locked_super+0x70/0xe8 fs/super.c:332
 deactivate_super+0xd0/0xd4 fs/super.c:363
 cleanup_mnt+0x180/0x1bc fs/namespace.c:1291
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1298
 task_work_run+0x100/0x148 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x165c/0x2628 arch/arm64/kernel/signal.c:1302
 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/0x14c arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 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/11:
 #0: ffff80000d4955c8 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x448 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
 #0: ffff80000d495c18 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x448 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
 #0: ffff80000d4954a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:324
2 locks held by getty/4094:
 #0: ffff0000c6685098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
 #1: ffff80000f6a62f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x28c/0xbc4 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:0/4439:
 #0: ffff0000c0d40138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x274/0x9d0 kernel/workqueue.c:2262
 #1: ffff800012f33d80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x2a0/0x9d0 kernel/workqueue.c:2264
2 locks held by syz-executor316/4471:
 #0: ffff0000c9f9c0e0 (&type->s_umount_key#41){+.+.}-{3:3}, at: deactivate_super+0xc8/0xd4 fs/super.c:362
 #1: ffff0000c49667d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
 #1: ffff0000c49667d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0xac/0x4c4 fs/fs-writeback.c:2723
2 locks held by segctord/4473:

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