do_one_initcall+0x120/0x6e0 init/main.c:1269
 do_initcall_level init/main.c:1331 [inline]
 do_initcalls init/main.c:1347 [inline]
 do_basic_setup init/main.c:1366 [inline]
 kernel_init_freeable+0x5c2/0x900 init/main.c:1579
 kernel_init+0x1c/0x2b0 init/main.c:1469
 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
------------[ cut here ]------------
kernel BUG at mm/filemap.c:154!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 6488 Comm: syz.1.129 Not tainted 6.16.0-syzkaller-11129-geacf91b0c78a #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:filemap_unaccount_folio+0xef/0x8c0 mm/filemap.c:154
Code: 27 2b c9 ff 89 ee 31 ff 4c 8d 6b 30 e8 5a 26 c9 ff 85 ed 7e 17 e8 11 2b c9 ff 48 c7 c6 00 1a b9 8b 48 89 df e8 e2 cd 11 00 90 <0f> 0b e8 fa 2a c9 ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc9000c757310 EFLAGS: 00010046
RAX: 0000000000080000 RBX: ffffea00019f8000 RCX: ffffc90010df4000
RDX: 0000000000080000 RSI: ffffffff81f25d7e RDI: ffff88801f7fccc4
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888144adcc40
R13: ffffea00019f8030 R14: 0000000000000360 R15: ffffea00019f8000
FS:  00007fcf6d3b66c0(0000) GS:ffff8881247c8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000015ec40 CR3: 000000006347e000 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+0x5b1/0x10e0 fs/open.c:342
 madvise_remove mm/madvise.c:1048 [inline]
 madvise_vma_behavior+0x2839/0x2c50 mm/madvise.c:1277
 madvise_walk_vmas+0x31f/0x9c0 mm/madvise.c:1600
 madvise_do_behavior+0x1e2/0x530 mm/madvise.c:1816
 do_madvise+0x176/0x240 mm/madvise.c:1909
 __do_sys_madvise mm/madvise.c:1918 [inline]
 __se_sys_madvise mm/madvise.c:1916 [inline]
 __x64_sys_madvise+0xa9/0x110 mm/madvise.c:1916
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcf6c58eb69
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:00007fcf6d3b6038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007fcf6c7b6240 RCX: 00007fcf6c58eb69
RDX: 0000000000000009 RSI: 0000000000600002 RDI: 0000200000000000
RBP: 00007fcf6c611df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcf6c7b6240 R15: 00007ffeafe398a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0xef/0x8c0 mm/filemap.c:154
Code: 27 2b c9 ff 89 ee 31 ff 4c 8d 6b 30 e8 5a 26 c9 ff 85 ed 7e 17 e8 11 2b c9 ff 48 c7 c6 00 1a b9 8b 48 89 df e8 e2 cd 11 00 90 <0f> 0b e8 fa 2a c9 ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc9000c757310 EFLAGS: 00010046
RAX: 0000000000080000 RBX: ffffea00019f8000 RCX: ffffc90010df4000
RDX: 0000000000080000 RSI: ffffffff81f25d7e RDI: ffff88801f7fccc4
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888144adcc40
R13: ffffea00019f8030 R14: 0000000000000360 R15: ffffea00019f8000
FS:  00007fcf6d3b66c0(0000) GS:ffff8881247c8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000015ec40 CR3: 000000006347e000 CR4: 00000000003526f0