INFO: task kcompactd0:32 blocked for more than 143 seconds.
      Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0      state:D stack:23736 pid:32    tgid:32    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1960/0x4a80 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 io_schedule+0x8c/0x100 kernel/sched/core.c:8998
 folio_wait_bit_common+0x881/0x12a0 mm/filemap.c:1273
 migrate_folio_unmap mm/migrate.c:1163 [inline]
 migrate_pages_batch+0xcd0/0x3600 mm/migrate.c:1673
 migrate_pages_sync mm/migrate.c:1866 [inline]
 migrate_pages+0x2513/0x3300 mm/migrate.c:1948
 compact_zone+0x311f/0x47c0 mm/compaction.c:2532
 proactive_compact_node mm/compaction.c:2797 [inline]
 kcompactd+0x1047/0x1b50 mm/compaction.c:3113
 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:242
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/u4:0/11:
1 lock held by khungtaskd/29:
 #0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
 #0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
 #0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4818:
 #0: ffff88802adfa0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
4 locks held by syz-executor.2/5092:
1 lock held by syz-executor.4/5101:
 #0: ffffffff8d932a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
 #0: ffffffff8d932a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:996
2 locks held by kworker/0:3/5125:
 #0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
 #1: ffffc90004307d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #1: ffffc90004307d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
1 lock held by syz-executor.5/29570:
1 lock held by syz-executor.3/2469:
1 lock held by syz-executor.1/19595:
1 lock held by syz-executor.0/20939:
1 lock held by syz-executor.2/20942:
2 locks held by syz-executor.1/20947:

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
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:242
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 29570 Comm: syz-executor.5 Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:div_u64_rem include/linux/math64.h:29 [inline]
RIP: 0010:div_u64 include/linux/math64.h:130 [inline]
RIP: 0010:___update_load_avg kernel/sched/pelt.c:265 [inline]
RIP: 0010:__update_load_avg_cfs_rq+0x5f3/0xb50 kernel/sched/pelt.c:327
Code: 90 00 00 00 48 89 f8 48 c1 e8 03 80 3c 30 00 74 0f e8 51 87 82 00 48 be 00 00 00 00 00 fc ff df 49 8b 84 24 90 00 00 00 31 d2 <48> f7 f5 48 89 c3 49 8d bc 24 a8 00 00 00 48 89 f8 48 c1 e8 03 80
RSP: 0000:ffffc900001f0948 EFLAGS: 00000046
RAX: 000000001d4e4ce3 RBX: 000000000000165f RCX: 0000000000000fff
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff8880b993c490
RBP: 000000000000b86b R08: 00000000000005ed R09: 0000000000000001
R10: 000000001daaeb36 R11: fffffbfff1e019a6 R12: ffff8880b993c400
R13: 000000000008c400 R14: 000000000000b86b R15: 0000000000000fff
FS:  00007f6dc1a776c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdb6834f88 CR3: 00000000208f5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 update_cfs_rq_load_avg kernel/sched/fair.c:4470 [inline]
 update_load_avg+0x594/0x1810 kernel/sched/fair.c:4583
 enqueue_task_fair+0x415/0xbc0 kernel/sched/fair.c:6600
 enqueue_task+0x19d/0x2e0 kernel/sched/core.c:2095
 activate_task kernel/sched/core.c:2125 [inline]
 ttwu_do_activate+0x1d7/0x760 kernel/sched/core.c:3770
 ttwu_queue kernel/sched/core.c:4021 [inline]
 try_to_wake_up+0x86d/0x1440 kernel/sched/core.c:4342
 hrtimer_wakeup+0x62/0x80 kernel/time/hrtimer.c:1942
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x59f/0xd10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x104/0x390 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:127 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:178 [inline]
RIP: 0010:kasan_check_range+0x86/0x290 mm/kasan/generic.c:187
Code: 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 <0f> 85 c5 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc
RSP: 0000:ffffc90004c3f760 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff11006a80202 RCX: ffffffff82cdb95a
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888035401010
RBP: ffffffffffffffff R08: ffff888035401017 R09: 1ffff11006a80202
R10: dffffc0000000000 R11: ffffed1006a80202 R12: ffff8880917ba092
R13: 1ffff110122f7412 R14: dffffc0000000001 R15: ffffed1006a80203
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 NVolCaseSensitive fs/ntfs/volume.h:158 [inline]
 ntfs_lookup_inode_by_name+0x133a/0x2ca0 fs/ntfs/dir.c:451
 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:1650
 legacy_get_tree+0xef/0x190 fs/fs_context.c:662
 vfs_get_tree+0x8c/0x280 fs/super.c:1771
 do_new_mount+0x28f/0xae0 fs/namespace.c:3337
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f6dc0c7e1ea
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:00007f6dc1a76ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6dc1a76f80 RCX: 00007f6dc0c7e1ea
RDX: 0000000020000000 RSI: 000000002001ee80 RDI: 00007f6dc1a76f40
RBP: 0000000020000000 R08: 00007f6dc1a76f80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000002001ee80
R13: 00007f6dc1a76f40 R14: 000000000001ee23 R15: 0000000020000080
 </TASK>