INFO: task segctord:11382 blocked for more than 143 seconds.
      Not tainted 6.3.0-syzkaller-12423-g865fdb08197e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord        state:D stack:28696 pid:11382 ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0x187b/0x4900 kernel/sched/core.c:6669
 schedule+0xc3/0x180 kernel/sched/core.c:6745
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
 rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
 __down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
 nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2508 [inline]
 nilfs_segctor_thread+0x52f/0x1140 fs/nilfs2/segment.c:2592
 kthread+0x2b8/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
 #0: ffffffff8cf277b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
 #0: ffffffff8cf27b70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
 #0: ffffffff8cf275e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4746:
 #0: ffff88802d1a2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
4 locks held by kworker/1:15/5792:
2 locks held by kworker/u4:12/9646:
4 locks held by syz-executor.2/11364:
1 lock held by segctord/11382:
 #0: ffff888023af32a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
5 locks held by syz-executor.3/11601:
1 lock held by syz-executor.2/12541:
2 locks held by syz-executor.5/12481:
2 locks held by syz-executor.4/12508:
2 locks held by syz-executor.3/12524:

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-12423-g865fdb08197e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xec2/0xf00 kernel/hung_task.c:379
 kthread+0x2b8/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2854 Comm: kworker/u4:6 Not tainted 6.3.0-syzkaller-12423-g865fdb08197e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue:  0x0 (events_unbound)
RIP: 0010:psi_flags_change kernel/sched/psi.c:892 [inline]
RIP: 0010:psi_task_switch+0xa2/0x770 kernel/sched/psi.c:932
Code: 45 85 f6 4c 89 7c 24 38 48 89 6c 24 08 0f 84 8a 01 00 00 44 89 6c 24 10 49 8d af d0 12 00 00 48 89 eb 48 c1 eb 03 0f b6 04 3b <84> c0 0f 85 0b 05 00 00 44 8b 6d 00 41 f6 c5 10 74 0d 80 3d f5 60
RSP: 0018:ffffc9000c637b08 EFLAGS: 00000806
RAX: 0000000000000000 RBX: 1ffff11004e1d25a RCX: 000000963c1b3029
RDX: 0000000000000001 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff8880270e92d0 R08: dffffc0000000000 R09: ffffed100541eb29
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: 0000000000000001 R14: 00000000000013b7 R15: ffff8880270e8000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f920324f000 CR3: 00000000248bf000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 psi_sched_switch kernel/sched/stats.h:185 [inline]
 __schedule+0x2528/0x4900 kernel/sched/core.c:6664
 schedule+0xc3/0x180 kernel/sched/core.c:6745
 worker_thread+0xec1/0x1210 kernel/workqueue.c:2573
 kthread+0x2b8/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>