INFO: task kcompactd0:30 blocked for more than 143 seconds.
      Not tainted 6.4.0-rc5-syzkaller-00313-g4c605260bc60 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0      state:D stack:27936 pid:30    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 io_schedule+0xbe/0x130 kernel/sched/core.c:8979
 folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1301
 folio_lock include/linux/pagemap.h:955 [inline]
 migrate_folio_unmap mm/migrate.c:1159 [inline]
 migrate_pages_batch+0x1456/0x3020 mm/migrate.c:1674
 migrate_pages_sync mm/migrate.c:1889 [inline]
 migrate_pages+0x1e74/0x27d0 mm/migrate.c:1970
 compact_zone+0x1c98/0x39a0 mm/compaction.c:2439
 proactive_compact_node+0x103/0x1b0 mm/compaction.c:2702
 kcompactd+0x837/0xcc0 mm/compaction.c:3003
 kthread+0x344/0x440 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/12:
 #0: ffffffff8c7954f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8c7951f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/27:
 #0: ffffffff8c796100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6559
2 locks held by getty/4748:
 #0: ffff88802119c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900020182f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
2 locks held by kworker/u4:8/5237:
2 locks held by syz-executor.4/30016:
1 lock held by syz-executor.5/30059:
2 locks held by syz-executor.4/30105:
1 lock held by syz-executor.4/30182:
1 lock held by syz-executor.5/30197:
1 lock held by syz-executor.4/30238:
1 lock held by syz-executor.4/30315:
1 lock held by syz-executor.4/30380:
2 locks held by syz-executor.5/30414:
1 lock held by syz-executor.4/30517:

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

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.4.0-rc5-syzkaller-00313-g4c605260bc60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x2a4/0x300 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+0xe16/0x1090 kernel/hung_task.c:379
 kthread+0x344/0x440 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: 30105 Comm: syz-executor.4 Not tainted 6.4.0-rc5-syzkaller-00313-g4c605260bc60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:84 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [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+0xd1/0x190 mm/kasan/generic.c:187
Code: 8d 50 08 eb 09 48 83 c0 01 48 39 d0 74 7a 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e <48> 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 80 38 00 74 f2 eb d4 41
RSP: 0018:ffffc9001587f130 EFLAGS: 00000002
RAX: fffffbfff22a3da0 RBX: fffffbfff22a3da1 RCX: ffffffff816480ee
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff9151ed00
RBP: fffffbfff22a3da0 R08: 0000000000000000 R09: ffffffff9151ed07
R10: fffffbfff22a3da0 R11: 0000000000094001 R12: ffff888039a5cbd8
R13: 0000000000000009 R14: 0000000000000020 R15: ffff888039a5cbf8
FS:  00007f38f15ff700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c001069000 CR3: 000000009d660000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 mark_lock.part.0+0xee/0x1970 kernel/locking/lockdep.c:4634
 mark_lock kernel/locking/lockdep.c:4620 [inline]
 mark_usage kernel/locking/lockdep.c:4577 [inline]
 __lock_acquire+0x907/0x5f30 kernel/locking/lockdep.c:5042
 lock_acquire kernel/locking/lockdep.c:5705 [inline]
 lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670
 rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
 rcu_read_lock include/linux/rcupdate.h:773 [inline]
 __mod_lruvec_page_state+0xa0/0x3f0 mm/memcontrol.c:873
 __lruvec_stat_mod_folio include/linux/vmstat.h:615 [inline]
 __filemap_add_folio+0x774/0xe60 mm/filemap.c:908
 filemap_add_folio+0xaf/0x1e0 mm/filemap.c:939
 page_cache_ra_unbounded+0x1d2/0x5e0 mm/readahead.c:251
 do_page_cache_ra mm/readahead.c:300 [inline]
 page_cache_ra_order+0x6ec/0xa00 mm/readahead.c:560
 do_sync_mmap_readahead mm/filemap.c:3187 [inline]
 filemap_fault+0x1572/0x24c0 mm/filemap.c:3279
 __do_fault+0x107/0x600 mm/memory.c:4176
 do_read_fault mm/memory.c:4530 [inline]
 do_fault mm/memory.c:4659 [inline]
 do_pte_missing mm/memory.c:3647 [inline]
 handle_pte_fault mm/memory.c:4947 [inline]
 __handle_mm_fault+0x28bc/0x41c0 mm/memory.c:5089
 handle_mm_fault+0x2af/0x9f0 mm/memory.c:5243
 faultin_page mm/gup.c:925 [inline]
 __get_user_pages+0x60a/0x10e0 mm/gup.c:1147
 populate_vma_page_range+0x2df/0x420 mm/gup.c:1543
 __mm_populate+0x105/0x3b0 mm/gup.c:1652
 mm_populate include/linux/mm.h:3153 [inline]
 vm_mmap_pgoff+0x2c2/0x3b0 mm/util.c:548
 ksys_mmap_pgoff+0x41f/0x5a0 mm/mmap.c:1440
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f38f088c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f38f15ff168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f38f09abf80 RCX: 00007f38f088c169
RDX: 0000000001000003 RSI: 0000000000b37b00 RDI: 0000000020000000
RBP: 00007f38f08e7ca1 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff8618444f R14: 00007f38f15ff300 R15: 0000000000022000
 </TASK>