dput+0x19f/0x2b0 fs/dcache.c:911
 __fput+0x69d/0xa80 fs/file_table.c:476
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6b5/0x2300 kernel/exit.c:961
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
 get_signal+0x125e/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 irqentry_exit_to_user_mode+0x81/0x120 kernel/entry/common.c:73
 exc_page_fault+0x9f/0xf0 arch/x86/mm/fault.c:1535
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
------------[ cut here ]------------
kernel BUG at mm/filemap.c:154!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 10144 Comm: syz.3.1432 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:filemap_unaccount_folio+0x44f/0x4a0 mm/filemap.c:154
Code: 9d c9 ff 48 89 df 48 c7 c6 e0 4a 14 8b e8 09 ee 32 ff 90 0f 0b e8 b1 9d c9 ff 48 89 df 48 c7 c6 20 4a 14 8b e8 f2 ed 32 ff 90 <0f> 0b e8 9a 9d c9 ff 48 89 df 48 c7 c6 e0 4a 14 8b e8 db ed 32 ff
RSP: 0018:ffffc9001c04ee60 EFLAGS: 00010246
RAX: 1db990fdb5a59d00 RBX: ffffea0001950000 RCX: 1db990fdb5a59d00
RDX: 0000000000000007 RSI: ffffffff8d218bdd RDI: ffff88801c763b80
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017104863 R12: 0000000000000040
R13: 1ffffd400032a000 R14: 1ffffd400032a001 R15: ffffea0001950008
FS:  00007fadff9996c0(0000) GS:ffff8881268c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3191dff8 CR3: 000000003110c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000006800 DR2: 0000000000009951
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __filemap_remove_folio+0xc3/0x500 mm/filemap.c:223
 filemap_remove_folio+0xe6/0x200 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+0x593/0x1100 fs/hugetlbfs/inode.c:593
 hugetlbfs_punch_hole fs/hugetlbfs/inode.c:716 [inline]
 hugetlbfs_fallocate+0xbd4/0x1110 fs/hugetlbfs/inode.c:742
 vfs_fallocate+0x672/0x7f0 fs/open.c:342
 madvise_remove mm/madvise.c:1049 [inline]
 madvise_vma_behavior+0x3156/0x3a00 mm/madvise.c:1346
 madvise_walk_vmas+0x51c/0xa30 mm/madvise.c:1669
 madvise_do_behavior+0x38e/0x550 mm/madvise.c:1885
 do_madvise+0x183/0x230 mm/madvise.c:1978
 __do_sys_madvise mm/madvise.c:1987 [inline]
 __se_sys_madvise mm/madvise.c:1985 [inline]
 __x64_sys_madvise+0xa7/0xc0 mm/madvise.c:1985
 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: 0033:0x7fae01b9ebe9
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:00007fadff999038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007fae01dc6270 RCX: 00007fae01b9ebe9
RDX: 0000000000000009 RSI: 0000000000600002 RDI: 0000200000000000
RBP: 00007fae01c21e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fae01dc6308 R14: 00007fae01dc6270 R15: 00007fffdab1d498
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0x44f/0x4a0 mm/filemap.c:154
Code: 9d c9 ff 48 89 df 48 c7 c6 e0 4a 14 8b e8 09 ee 32 ff 90 0f 0b e8 b1 9d c9 ff 48 89 df 48 c7 c6 20 4a 14 8b e8 f2 ed 32 ff 90 <0f> 0b e8 9a 9d c9 ff 48 89 df 48 c7 c6 e0 4a 14 8b e8 db ed 32 ff
RSP: 0018:ffffc9001c04ee60 EFLAGS: 00010246
RAX: 1db990fdb5a59d00 RBX: ffffea0001950000 RCX: 1db990fdb5a59d00
RDX: 0000000000000007 RSI: ffffffff8d218bdd RDI: ffff88801c763b80
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017104863 R12: 0000000000000040
R13: 1ffffd400032a000 R14: 1ffffd400032a001 R15: ffffea0001950008
FS:  00007fadff9996c0(0000) GS:ffff8881268c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3191dff8 CR3: 000000003110c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000006800 DR2: 0000000000009951
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400