INFO: task segctord:14846 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord        state:D stack:    0 pid:14846 ppid:     2 flags:0x00000008
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0x414/0x5a0 kernel/sched/core.c:6494
 schedule+0x64/0xa4 kernel/sched/core.c:6570
 rwsem_down_write_slowpath+0x258/0x468 kernel/locking/rwsem.c:1182
 __down_write_common kernel/locking/rwsem.c:1297 [inline]
 __down_write kernel/locking/rwsem.c:1306 [inline]
 down_write+0x88/0xcc kernel/locking/rwsem.c:1553
 nilfs_transaction_lock+0x8c/0x124 fs/nilfs2/segment.c:357
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2482 [inline]
 nilfs_segctor_thread+0x174/0x660 fs/nilfs2/segment.c:2566
 kthread+0x12c/0x158 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
 #0: ffff80000d433568 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
 #0: ffff80000d433bb8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
 #0: ffff80000d433440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279
2 locks held by udevd/2561:
2 locks held by getty/2714:
 #0: ffff0000c7a96098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
 #1: ffff80000f6162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177
4 locks held by kworker/0:9/3404:
 #0: ffff0000c0c12138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262
 #1: ffff800014b03d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264
 #2: ffff0000c3e0d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #2: ffff0000c3e0d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x8c/0x658 drivers/usb/core/hub.c:5681
 #3: ffff0000c3e0ed08 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3103 [inline]
 #3: ffff0000c3e0ed08 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2e4/0x658 drivers/usb/core/hub.c:5734
6 locks held by syz-executor.5/14845:
1 lock held by segctord/14846:
 #0: ffff00011a0a5aa0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x8c/0x124 fs/nilfs2/segment.c:357
2 locks held by kworker/u4:3/19775:
3 locks held by syz-executor.0/25826:
 #0: ffff80000d6ca840 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x2c/0xe4 drivers/usb/core/file.c:39
 #1: ffff80000d6dc3f0 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x3c/0x29c drivers/usb/class/cdc-wdm.c:715
 #2: ffff0000c3e0ed08 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3103 [inline]
 #2: ffff0000c3e0ed08 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_port_resume+0x114/0x7b8 drivers/usb/core/hub.c:3661

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