INFO: task segctord:7332 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc8-syzkaller-00015-gf6feea56f66d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord        state:D stack:23456 pid:7332  ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0x1409/0x43f0 kernel/sched/core.c:6606
 schedule+0xc3/0x190 kernel/sched/core.c:6682
 rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
 nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2486 [inline]
 nilfs_segctor_thread+0x52f/0x1140 fs/nilfs2/segment.c:2570
 kthread+0x270/0x300 kernel/kthread.c:376
 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/12:
 #0: ffffffff8cf258d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8cf260d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8cf25700 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4743:
 #0: ffff88814a7d2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
5 locks held by syz-executor.0/7304:
1 lock held by segctord/7332:
 #0: ffff88802cea72a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
3 locks held by syz-executor.3/7433:
4 locks held by syz-executor.4/7436:
1 lock held by segctord/7443:
 #0: ffff88802b9862a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
1 lock held by segctord/7444:
 #0: ffff88802be6d2a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
4 locks held by syz-executor.2/7743:
1 lock held by segctord/7744:
 #0: ffff8880226042a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc8-syzkaller-00015-gf6feea56f66d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x4e5/0x560 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b4/0x3f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xf70/0xfb0 kernel/hung_task.c:377
 kthread+0x270/0x300 kernel/kthread.c:376
 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: 7436 Comm: syz-executor.4 Not tainted 6.2.0-rc8-syzkaller-00015-gf6feea56f66d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x90 kernel/kcov.c:305
Code: 89 11 48 c7 44 0a 08 03 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <f3> 0f 1e fa 4c 8b 04 24 65 48 8b 15 30 d2 77 7e 65 8b 05 31 d2 77
RSP: 0018:ffffc900059bf1f8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff92000b37e2c
RDX: ffffc9000c7ba000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900059bf308 R08: ffffffff81be464a R09: fffffbfff1ca4ece
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000033135
R13: 0000000000000007 R14: ffffea000281b380 R15: ffff888032df36c0
FS:  00007f0d4a41c700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fea93a19a49 CR3: 000000003e4da000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __filemap_get_folio+0x7aa/0xe10 mm/filemap.c:1978
 pagecache_get_page+0x2c/0x240 mm/folio-compat.c:98
 find_or_create_page include/linux/pagemap.h:612 [inline]
 grab_cache_page include/linux/pagemap.h:742 [inline]
 nilfs_grab_buffer+0xb1/0x540 fs/nilfs2/page.c:57
 nilfs_mdt_submit_block+0xd7/0x8f0 fs/nilfs2/mdt.c:121
 nilfs_mdt_read_block+0xeb/0x430 fs/nilfs2/mdt.c:176
 nilfs_mdt_get_block+0x12d/0xbb0 fs/nilfs2/mdt.c:251
 nilfs_sufile_get_segment_usage_block fs/nilfs2/sufile.c:92 [inline]
 nilfs_sufile_truncate_range fs/nilfs2/sufile.c:679 [inline]
 nilfs_sufile_resize+0x7a3/0x12b0 fs/nilfs2/sufile.c:777
 nilfs_resize_fs+0x20c/0xed0 fs/nilfs2/super.c:422
 nilfs_ioctl_resize fs/nilfs2/ioctl.c:1033 [inline]
 nilfs_ioctl+0x137c/0x2440 fs/nilfs2/ioctl.c:1301
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0d4968c0f9
Code: Unable to access opcode bytes at 0x7f0d4968c0cf.
RSP: 002b:00007f0d4a41c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0d497abf80 RCX: 00007f0d4968c0f9
RDX: 0000000020000040 RSI: 0000000040086e8b RDI: 000000000000000a
RBP: 00007f0d496e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe171619bf R14: 00007f0d4a41c300 R15: 0000000000022000
 </TASK>