INFO: task kcompactd0:32 blocked for more than 143 seconds.
      Not tainted 6.6.0-rc3-syzkaller-00055-g9ed22ae6be81 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0      state:D stack:23544 pid:32    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x196c/0x4af0 kernel/sched/core.c:6695
 schedule+0xc3/0x180 kernel/sched/core.c:6771
 io_schedule+0x8c/0x100 kernel/sched/core.c:9026
 folio_wait_bit_common+0x881/0x12a0 mm/filemap.c:1301
 migrate_folio_unmap mm/migrate.c:1155 [inline]
 migrate_pages_batch+0xd8a/0x3620 mm/migrate.c:1657
 migrate_pages_sync mm/migrate.c:1844 [inline]
 migrate_pages+0x2481/0x31f0 mm/migrate.c:1926
 compact_zone+0x30dc/0x47f0 mm/compaction.c:2515
 proactive_compact_node mm/compaction.c:2780 [inline]
 kcompactd+0x1082/0x1b90 mm/compaction.c:3100
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
 #0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
 #0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4795:
 #0: ffff88814aa7d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
3 locks held by kworker/u4:9/8906:
1 lock held by syz-executor.4/11822:
1 lock held by syz-executor.3/13517:
 #0: ffff888098a1c410 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:447

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc3-syzkaller-00055-g9ed22ae6be81 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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+0x198/0x310 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfa9/0xff0 kernel/hung_task.c:379
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11822 Comm: syz-executor.4 Not tainted 6.6.0-rc3-syzkaller-00055-g9ed22ae6be81 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:__sanitizer_cov_trace_const_cmp2+0x80/0x90 kernel/kcov.c:299
Code: 8d 42 28 4c 39 c8 77 22 89 f8 89 f6 49 ff c2 4c 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
RSP: 0018:ffffc90004edf710 EFLAGS: 00000297
RAX: 0000000000000002 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffff88801ff98000 RSI: 0000000000000068 RDI: 0000000000000040
RBP: 0000000000000068 R08: ffffffff82cee760 R09: 0000000000000001
R10: dffffc0000000000 R11: ffffed10051a1103 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffff8b3bdaa0 R15: 000000000000000c
FS:  00007f28474fd6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000646000 CR3: 00000000292ce000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 ntfs_collate_names+0x320/0x3a0 fs/ntfs/unistr.c:116
 ntfs_lookup_inode_by_name+0x16c8/0x2ca0 fs/ntfs/dir.c:496
 check_windows_hibernation_status+0xf0/0x4c0 fs/ntfs/super.c:1282
 load_system_files+0x35db/0x4840 fs/ntfs/super.c:1997
 ntfs_fill_super+0x19b3/0x2bd0 fs/ntfs/super.c:2900
 mount_bdev+0x237/0x300 fs/super.c:1629
 legacy_get_tree+0xef/0x190 fs/fs_context.c:638
 vfs_get_tree+0x8c/0x280 fs/super.c:1750
 do_new_mount+0x28f/0xae0 fs/namespace.c:3335
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
 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: 0033:0x7f284687e1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f28474fcee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f28474fcf80 RCX: 00007f284687e1ea
RDX: 0000000020000100 RSI: 000000002001ecc0 RDI: 00007f28474fcf40
RBP: 0000000020000100 R08: 00007f28474fcf80 R09: 00000000000000d9
R10: 00000000000000d9 R11: 0000000000000202 R12: 000000002001ecc0
R13: 00007f28474fcf40 R14: 000000000001ec92 R15: 00000000200003c0
 </TASK>