__update_and_free_hugetlb_folio+0x1e3/0x420 mm/hugetlb.c:1649
 update_and_free_hugetlb_folio+0xce/0x210 mm/hugetlb.c:1704
 free_huge_folio+0x85b/0x1050 mm/hugetlb.c:1882
 folios_put_refs+0x4e7/0x740 mm/swap.c:980
 free_pages_and_swap_cache+0x3f0/0x4a0 mm/swap_state.c:267
 __tlb_batch_free_encoded_pages+0xf9/0x290 mm/mmu_gather.c:136
 tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:397 [inline]
 tlb_flush_mmu mm/mmu_gather.c:404 [inline]
 tlb_finish_mmu+0x168/0x7c0 mm/mmu_gather.c:497
 vms_clear_ptes+0x55e/0x770 mm/vma.c:1235
 vms_clean_up_area mm/vma.c:1247 [inline]
 __mmap_prepare mm/vma.c:2396 [inline]
 __mmap_region+0x5e1/0x27b0 mm/vma.c:2651
 mmap_region+0x32b/0x3f0 mm/vma.c:2739
 do_mmap+0xa3e/0x1210 mm/mmap.c:558
 vm_mmap_pgoff+0x29e/0x470 mm/util.c:580
 ksys_mmap_pgoff+0x1c8/0x5c0 mm/mmap.c:604
------------[ cut here ]------------
kernel BUG at mm/filemap.c:154!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 6866 Comm: syz.4.223 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:filemap_unaccount_folio+0xef/0x8c0 mm/filemap.c:154
Code: 07 20 c9 ff 89 ee 31 ff 4c 8d 6b 30 e8 3a 1b c9 ff 85 ed 7e 17 e8 f1 1f c9 ff 48 c7 c6 40 20 b9 8b 48 89 df e8 22 d1 11 00 90 <0f> 0b e8 da 1f c9 ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc9001bba7310 EFLAGS: 00010046
RAX: 0000000000080000 RBX: ffffea0001880000 RCX: ffffc90014901000
RDX: 0000000000080000 RSI: ffffffff81f27d9e RDI: ffff88807caa4cc4
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888023eb8c40
R13: ffffea0001880030 R14: 0000000000000480 R15: ffffea0001880000
FS:  00007f6e707f26c0(0000) GS:ffff8881247b2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e703cef98 CR3: 000000002d40c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __filemap_remove_folio mm/filemap.c:223 [inline]
 filemap_remove_folio+0xf1/0x250 mm/filemap.c:253
 hugetlb_delete_from_page_cache fs/hugetlbfs/inode.c:331 [inline]
 remove_inode_single_folio fs/hugetlbfs/inode.c:536 [inline]
 remove_inode_hugepages+0x74a/0xed0 fs/hugetlbfs/inode.c:593
 hugetlbfs_punch_hole fs/hugetlbfs/inode.c:716 [inline]
 hugetlbfs_fallocate+0xf3f/0x12e0 fs/hugetlbfs/inode.c:742
 vfs_fallocate+0x5b4/0x10e0 fs/open.c:342
 madvise_remove mm/madvise.c:1049 [inline]
 madvise_vma_behavior+0x2ad7/0x2d60 mm/madvise.c:1346
 madvise_walk_vmas+0x31f/0x9c0 mm/madvise.c:1669
 madvise_do_behavior+0x1e2/0x530 mm/madvise.c:1885
 do_madvise+0x176/0x240 mm/madvise.c:1978
 __do_sys_madvise mm/madvise.c:1987 [inline]
 __se_sys_madvise mm/madvise.c:1985 [inline]
 __x64_sys_madvise+0xa9/0x110 mm/madvise.c:1985
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e72d8eec9
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:00007f6e707f2038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f6e72fe6360 RCX: 00007f6e72d8eec9
RDX: 0000000000000009 RSI: 0000000000600002 RDI: 0000200000000000
RBP: 00007f6e72e11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6e72fe63f8 R14: 00007f6e72fe6360 R15: 00007ffec4248668
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0xef/0x8c0 mm/filemap.c:154
Code: 07 20 c9 ff 89 ee 31 ff 4c 8d 6b 30 e8 3a 1b c9 ff 85 ed 7e 17 e8 f1 1f c9 ff 48 c7 c6 40 20 b9 8b 48 89 df e8 22 d1 11 00 90 <0f> 0b e8 da 1f c9 ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc9001bba7310 EFLAGS: 00010046
RAX: 0000000000080000 RBX: ffffea0001880000 RCX: ffffc90014901000
RDX: 0000000000080000 RSI: ffffffff81f27d9e RDI: ffff88807caa4cc4
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888023eb8c40
R13: ffffea0001880030 R14: 0000000000000480 R15: ffffea0001880000
FS:  00007f6e707f26c0(0000) GS:ffff8881247b2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e703cef98 CR3: 000000002d40c000 CR4: 00000000003526f0