do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
page last free pid 9 tgid 9 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1395 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895
 __folio_put+0x21b/0x2c0 mm/swap.c:112
 unpin_user_pages_dirty_lock+0x395/0x510 mm/gup.c:329
 xdp_umem_unpin_pages net/xdp/xdp_umem.c:26 [inline]
 xdp_umem_release+0xdc/0x220 net/xdp/xdp_umem.c:61
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x439/0x7d0 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: 18950 Comm: syz.2.4597 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+0x715/0x790 mm/filemap.c:154
Code: a3 c9 ff 48 89 df 48 c7 c6 60 3e 94 8b e8 93 f0 31 ff 90 0f 0b e8 3b a3 c9 ff 48 89 df 48 c7 c6 40 3d 94 8b e8 7c f0 31 ff 90 <0f> 0b e8 24 a3 c9 ff 48 89 df 48 c7 c6 60 3e 94 8b e8 65 f0 31 ff
RSP: 0018:ffffc90000bb6e20 EFLAGS: 00010046
RAX: e9e89586c45c9400 RBX: ffffea0000e20000 RCX: e9e89586c45c9400
RDX: 0000000000000005 RSI: ffffffff8dba9b22 RDI: ffff888068141e00
RBP: 0000000000000001 R08: ffff8880b8724253 R09: 1ffff110170e484a
R10: dffffc0000000000 R11: ffffed10170e484b R12: 0000000000000040
R13: 1ffffd40001c4000 R14: 1ffffd40001c4001 R15: ffffea0000e20008
FS:  00007f5e1c49b6c0(0000) GS:ffff888125d12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31f6642f98 CR3: 000000005bf81000 CR4: 0000000000350ef0
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:331 [inline]
 remove_inode_single_folio fs/hugetlbfs/inode.c:536 [inline]
 remove_inode_hugepages+0x594/0x1100 fs/hugetlbfs/inode.c:593
 hugetlbfs_punch_hole fs/hugetlbfs/inode.c:716 [inline]
 hugetlbfs_fallocate+0xbc7/0x1100 fs/hugetlbfs/inode.c:742
 vfs_fallocate+0x669/0x7e0 fs/open.c:342
 madvise_remove mm/madvise.c:1049 [inline]
 madvise_vma_behavior+0x3254/0x3af0 mm/madvise.c:1346
 madvise_walk_vmas+0x51c/0xa30 mm/madvise.c:1669
 madvise_do_behavior+0x38e/0x550 mm/madvise.c:1885
 do_madvise+0x1bc/0x270 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: 0033:0x7f5e1b58eec9
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:00007f5e1c49b038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f5e1b7e6270 RCX: 00007f5e1b58eec9
RDX: 0000000000000009 RSI: 0000000000600002 RDI: 0000200000000000
RBP: 00007f5e1b611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5e1b7e6308 R14: 00007f5e1b7e6270 R15: 00007ffd42521cc8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0x715/0x790 mm/filemap.c:154
Code: a3 c9 ff 48 89 df 48 c7 c6 60 3e 94 8b e8 93 f0 31 ff 90 0f 0b e8 3b a3 c9 ff 48 89 df 48 c7 c6 40 3d 94 8b e8 7c f0 31 ff 90 <0f> 0b e8 24 a3 c9 ff 48 89 df 48 c7 c6 60 3e 94 8b e8 65 f0 31 ff
RSP: 0018:ffffc90000bb6e20 EFLAGS: 00010046
RAX: e9e89586c45c9400 RBX: ffffea0000e20000 RCX: e9e89586c45c9400
RDX: 0000000000000005 RSI: ffffffff8dba9b22 RDI: ffff888068141e00
RBP: 0000000000000001 R08: ffff8880b8724253 R09: 1ffff110170e484a
R10: dffffc0000000000 R11: ffffed10170e484b R12: 0000000000000040
R13: 1ffffd40001c4000 R14: 1ffffd40001c4001 R15: ffffea0000e20008
FS:  00007f5e1c49b6c0(0000) GS:ffff888125d12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31f6642f98 CR3: 000000005bf81000 CR4: 0000000000350ef0