update_and_free_hugetlb_folio+0x169/0x280 mm/hugetlb.c:1708
 free_huge_folio+0xd72/0x1100 mm/hugetlb.c:-1
 __folio_put+0xfd/0x2c0 mm/swap.c:105
 unmap_and_move_huge_page mm/migrate.c:1478 [inline]
 migrate_hugetlbs mm/migrate.c:1581 [inline]
 migrate_pages+0xd90/0x2930 mm/migrate.c:2011
 do_mbind mm/mempolicy.c:1542 [inline]
 kernel_mbind mm/mempolicy.c:1685 [inline]
 __do_sys_mbind mm/mempolicy.c:1759 [inline]
 __se_sys_mbind+0xa3e/0xc30 mm/mempolicy.c:1755
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page has been migrated, last migrate reason: mempolicy_mbind
------------[ cut here ]------------
kernel BUG at mm/filemap.c:154!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12904 Comm: syz.5.1777 Not tainted 6.16.0-rc7-syzkaller-00138-g513fc69f8fc7 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:filemap_unaccount_folio+0x715/0x790 mm/filemap.c:154
Code: c2 ca ff 48 89 df 48 c7 c6 80 2e 94 8b e8 93 f9 10 00 90 0f 0b e8 2b c2 ca ff 48 89 df 48 c7 c6 60 2d 94 8b e8 7c f9 10 00 90 <0f> 0b e8 14 c2 ca ff 48 89 df 48 c7 c6 80 2e 94 8b e8 65 f9 10 00
RSP: 0018:ffffc9001bc870e0 EFLAGS: 00010046
RAX: 6cf9f2ce82d97d00 RBX: ffffea0001db0000 RCX: 6cf9f2ce82d97d00
RDX: 0000000000000005 RSI: ffffffff8db845d7 RDI: ffff88801c739e00
RBP: 0000000000000001 R08: ffff8880b8624293 R09: 1ffff110170c4852
R10: dffffc0000000000 R11: ffffed10170c4853 R12: 0000000000000040
R13: 1ffffd40003b6000 R14: 1ffffd40003b6001 R15: ffffea0001db0008
FS:  00007f2c098426c0(0000) GS:ffff888125c23000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c09841f98 CR3: 000000002967e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __filemap_remove_folio+0xc3/0x500 mm/filemap.c:223
 filemap_remove_folio+0xe6/0x1f0 mm/filemap.c:253
 hugetlb_delete_from_page_cache fs/hugetlbfs/inode.c:334 [inline]
 remove_inode_single_folio fs/hugetlbfs/inode.c:539 [inline]
 remove_inode_hugepages+0x594/0x1100 fs/hugetlbfs/inode.c:596
 hugetlbfs_punch_hole fs/hugetlbfs/inode.c:719 [inline]
 hugetlbfs_fallocate+0xbc7/0x1100 fs/hugetlbfs/inode.c:745
 vfs_fallocate+0x6a3/0x830 fs/open.c:341
 madvise_remove mm/madvise.c:1043 [inline]
 madvise_vma_behavior mm/madvise.c:1274 [inline]
 madvise_walk_vmas mm/madvise.c:1541 [inline]
 madvise_do_behavior+0x169d/0x2e70 mm/madvise.c:1733
 do_madvise+0x174/0x220 mm/madvise.c:1826
 __do_sys_madvise mm/madvise.c:1835 [inline]
 __se_sys_madvise mm/madvise.c:1833 [inline]
 __x64_sys_madvise+0xa7/0xc0 mm/madvise.c:1833
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2c0898e9a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2c09842038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f2c08bb6320 RCX: 00007f2c0898e9a9
RDX: 0000000000000009 RSI: 0000000000600002 RDI: 0000200000000000
RBP: 00007f2c08a10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2c08bb6320 R15: 00007f2c08cdfa28
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0x715/0x790 mm/filemap.c:154
Code: c2 ca ff 48 89 df 48 c7 c6 80 2e 94 8b e8 93 f9 10 00 90 0f 0b e8 2b c2 ca ff 48 89 df 48 c7 c6 60 2d 94 8b e8 7c f9 10 00 90 <0f> 0b e8 14 c2 ca ff 48 89 df 48 c7 c6 80 2e 94 8b e8 65 f9 10 00
RSP: 0018:ffffc9001bc870e0 EFLAGS: 00010046
RAX: 6cf9f2ce82d97d00 RBX: ffffea0001db0000 RCX: 6cf9f2ce82d97d00
RDX: 0000000000000005 RSI: ffffffff8db845d7 RDI: ffff88801c739e00
RBP: 0000000000000001 R08: ffff8880b8624293 R09: 1ffff110170c4852
R10: dffffc0000000000 R11: ffffed10170c4853 R12: 0000000000000040
R13: 1ffffd40003b6000 R14: 1ffffd40003b6001 R15: ffffea0001db0008
FS:  00007f2c098426c0(0000) GS:ffff888125c23000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c09841f98 CR3: 000000002967e000 CR4: 00000000003526f0