migrate_pages_sync mm/migrate.c:2053 [inline]
 migrate_pages+0x20e0/0x2a10 mm/migrate.c:2135
 do_mbind mm/mempolicy.c:1614 [inline]
 kernel_mbind mm/mempolicy.c:1757 [inline]
 __do_sys_mbind mm/mempolicy.c:1831 [inline]
 __se_sys_mbind+0xe89/0x10f0 mm/mempolicy.c:1827
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
1
WARNING: mm/huge_memory.c:4371 at deferred_split_folio+0x974/0xaa0 mm/huge_memory.c:4371, CPU#0: syz.3.471/7933
Modules linked in:
CPU: 0 UID: 0 PID: 7933 Comm: syz.3.471 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:deferred_split_folio+0x974/0xaa0 mm/huge_memory.c:4371
Code: 31 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c2 97 82 09 cc e8 8c 73 93 ff 48 89 df 48 c7 c6 60 5a dc 8b e8 cd 77 f5 fe 90 <0f> 0b 90 e9 d4 fe ff ff e8 9f aa 7f 09 e8 6a 73 93 ff 48 89 df 48
RSP: 0018:ffffc90004117540 EFLAGS: 00010046
RAX: 3abf98cdc7747e00 RBX: ffffea0001480000 RCX: 0000000080000001
RDX: 0000000000000002 RSI: ffffffff8e1ba007 RDI: ffff888027da8000
RBP: ffffc90004117610 R08: ffff8880b86247d3 R09: 1ffff110170c48fa
R10: dffffc0000000000 R11: ffffed10170c48fb R12: ffffea0001480040
R13: 0000000000000000 R14: 0000000000010000 R15: 1ffff92000822eb0
FS:  00007f098d5dd6c0(0000) GS:ffff88812543f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae0e74da08 CR3: 000000007444e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 migrate_folio_move mm/migrate.c:1411 [inline]
 migrate_folios_move mm/migrate.c:1740 [inline]
 migrate_pages_batch+0x319f/0x4c40 mm/migrate.c:1996
 migrate_pages_sync mm/migrate.c:2026 [inline]
 migrate_pages+0x1c74/0x2a10 mm/migrate.c:2135
 do_mbind mm/mempolicy.c:1614 [inline]
 kernel_mbind mm/mempolicy.c:1757 [inline]
 __do_sys_mbind mm/mempolicy.c:1831 [inline]
 __se_sys_mbind+0xe89/0x10f0 mm/mempolicy.c:1827
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f098df9c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f098d5dd028 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f098e216090 RCX: 00007f098df9c819
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000200000001000
RBP: 00007f098e032c91 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f098e216128 R14: 00007f098e216090 R15: 00007ffe4230d748
 </TASK>